P8 FAQs
(GRA-L09 /GAR-UL00)
Author
LMT Team
Date
March 2015
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2015. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or part of the products, services and features described in this document may not be
within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees or
representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address:
Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website:
http://www.huawei.com
Email:
Version
Changed By
Change Description
Date
V1.0
Fu Jing (employee ID:
wx00276575)
Liu Qiang (employee
ID: 00163818)
Zhang Ning
(employee ID:
00256055)
Completed the first draft.
2015-04-16
V1.1
Fu Jing (employee ID:
wx00276575)
Liu Qiang (employee
ID: 00163818)
Updated the general FAQs.
2015-07-07
Contents
1 Wi-Fi and Bluetooth.................................................................................................................... 29
1.1 What can I do if the Bluetooth headset, Bluetooth car kit, or Bluetooth speaker fails to be searched or connected to
my phone?......................................................................................................................................................................... 29
1.2 Why can't my phone automatically connect to the Bluetooth car kit after the Bluetooth car kit is enabled? ............. 29
1.3 Why can't I listen to music using the Bluetooth headset? ........................................................................................... 30
1.4 What can I do if the voice is unclear when I make phone calls using a Bluetooth headset? ....................................... 30
1.5 Why can't I hear the navigation sound using the Bluetooth car kit? ........................................................................... 31
1.6 Can my Bluetooth headset automatically answer calls? ............................................................................................. 31
1.7 Does my phone support Bluetooth 4.0 BLE? ............................................................................................................. 31
1.8 Why can't I find the wrist band or other Bluetooth 4.0 devices on the Bluetooth settings screen? ............................. 31
1.9 Why can't I enable or disable the Bluetooth function? ............................................................................................... 31
1.10 What can I do if my phone can't access the Internet after it is connected to a router over Wi-Fi?............................ 31
1.11 Why is the connection to the Wi-Fi network interrupted? ........................................................................................ 32
1.12 Why can't I enable Wi-Fi? ........................................................................................................................................ 32
1.13 Why can't I disable Wi-Fi? ........................................................................................................................................ 32
1.14 Why can't my phone connect to a router over Wi-Fi? ............................................................................................... 32
1.15 Why does the download task over a Wi-Fi network stop after the screen turns off? ................................................ 33
1.16 Why can't my phone obtain an IP address? ............................................................................................................... 35
1.17 Why does the Wi-Fi network speed become slow or the signal become poor? ........................................................ 35
1.18 Can my phone be connected to an iPhone over Bluetooth? ...................................................................................... 35
1.19 Why does the call using the Bluetooth headset have noise and intermittent problems? ........................................... 35
1.20 Why doesn't the Bluetooth headset have any sound? ................................................................................................ 36
1.21 Why can't the Bluetooth car kit work after it is connected to my phone? ................................................................. 36
1.22 Why does the Wi-Fi switch become unavailable? .................................................................................................... 37
1.23 Why is the Wi-Fi function automatically turned on after I turn if off? ..................................................................... 37
1.24 Why can't my phone scan any Wi-Fi hotspot? .......................................................................................................... 37
1.25 Why can my phone scan the Wi-Fi hotspot only near the router? ............................................................................ 37
1.26 Why does the Wi-Fi device list display the same hotspot information without refreshing? ..................................... 37
1.27 Why is the confirmation button unavailable after I enter the Wi-Fi connection password? ..................................... 37
1.28 Why can't my phone successfully connect to the hotspot due to authentication failure? .......................................... 38
1.29 Why does my phone display the message indicating that the settings are saved but my phone fails to successfully
connect to the hotspot? ..................................................................................................................................................... 38
1.30 Why does my phone fail to connect to a home Wi-Fi network? ............................................................................... 38
1.31 Why does my phone fail to connect to a public Wi-Fi network? .............................................................................. 38
1.32 Why does my phone fail to access the Internet after it is connected to the home Wi-Fi network? ........................... 38
1.33 Why does my phone fail to access the Internet after it is connected to the public Wi-Fi network? .......................... 39
1.34 Why does my phone fail to access the Internet after it is connected to a private Wi-Fi hotspot? ............................. 39
1.35 Why does the network speed become slow after my phone is connected to a Wi-Fi hotspot? ................................. 39
1.36 Why does the Wi-Fi speed become slow after I connect my phone to a Bluetooth headset or a speaker? ............... 39
1.37 Why does my phone keep disconnecting and then reconnecting to a Wi-Fi network? ............................................. 40
1.38 Why is the Wi-Fi MAC address unavailable? ........................................................................................................... 40
1.39 What can I do if mobile data services are disabled when I turn off Wi-Fi? .............................................................. 40
1.40 After I set my phone to disconnect from the Wi-Fi network after the screen turns off, why is it connected to the XX
network after the screen turns on? .................................................................................................................................... 40
1.41 Why doesn't my phone ring for incoming calls when a Bluetooth headset is connected? ........................................ 40
1.42 What files can be transmitted using Bluetooth? ........................................................................................................ 41
1.43 How do I send a file using Bluetooth? ...................................................................................................................... 41
1.44 Why can't I pair my phone with other Bluetooth devices? ....................................................................................... 41
1.45 What protocols are used by Bluetooth functions? ..................................................................................................... 41
1.46 Does my phone support Bluetooth aptX? ................................................................................................................. 42
1.47 Why can't I clearly hear the voice from the Bluetooth car kit or Bluetooth headset? ............................................... 42
1.48 What is BLE? ............................................................................................................................................................ 42
1.49 How can I connect my phone to a smart BLE device? ............................................................................................. 42
1.50 Why do Bluetooth calls have the intermittent, noise, and echo problems? ............................................................... 42
1.51 Why can't the Bluetooth headset display its battery level? ....................................................................................... 43
1.52 What is Wi-Fi+? ........................................................................................................................................................ 43
1.53 How can I enable/disable Wi-Fi+? ............................................................................................................................ 43
1.54 Under what circumstances will Wi-Fi+ enable/disable Wi-Fi? ................................................................................. 43
1.55 When Wi-Fi+ is enabled, why do I receive a prompt stating "Network was previously detected as having no
Internet access, automatic connection disabled"? ............................................................................................................. 43
1.56 When Wi-Fi+ is enabled, why doesn't my phone switch to a mobile data connection when the Wi-Fi signal strength
is weak? ............................................................................................................................................................................ 44
1.57 Why does a 'Poor Wi-Fi connection' prompt appear when I'm browsing the Internet? ............................................ 44
1.58 Why does my phone automatically connect to another Wi-Fi network?................................................................... 44
1.59 Why does my phone automatically connect to a Wi-Fi network when I am using a mobile data connection? ......... 44
1.60 How can I restore the settings after I select the Do not prompt option on the notification confirmation interface? . 44
1.61 How can I set up a connection between my phone and B2? ..................................................................................... 45
1.62 How can I reconnect the wrist band and my phone after the Bluetooth connection is interrupted? ......................... 45
1. The wrist band is connected to only one phone ................................................................ 45
2. The wrist band is connected to two phones ....................................................................... 46
1.63 How can I reconnect a wrist band to my phone after a failed connection? ............................................................... 46
1.64 Why do the B2 and my phone occasionally keep automatically disconnecting from each other? ............................ 47
1.65 How can I use the B2 for calls? ................................................................................................................................ 47
1.66 What can I do with the missed call icon on my B2? ................................................................................................. 47
1.67 Why is the voice unclear or not smooth when I use the B2 to make calls? .............................................................. 47
1.68 How can I perform smart unlock using B2? ............................................................................................................. 47
1.69 Why does the B2 smart unlock function sometimes fail to work properly? ............................................................. 48
1.70 How can I use the B2 to take photos using remote control? ..................................................................................... 48
1.71 How can I find my phone using my B2? .................................................................................................................. 48
1.72 Why can't I hear the voice messages in WeChat when my B2 is connected to my phone? ...................................... 49
1.73 Can I use the TalkBand B1 with the P8 for fast unlock? .......................................................................................... 49
1.74 Why is the volume in WeChat so small when the P8 is connected to the TalkBand B2? ......................................... 49
1.75 Why can't I answer calls using gestures? (Version B118 only) ................................................................................. 49
1.76 Will Signal+ display an icon in the notification panel? Why is it only displayed once? .......................................... 49
1.77 When I flick down from the status bar and touch the Wi-Fi icon, why is Wi-Fi enabled slowly? ............................ 50
1.78 Why can't my phone scan a certain hotspot but can scan other hotspots? ................................................................ 50
2 Skytone.......................................................................................................................................... 51
2.1 Does my phone support Skytone?............................................................................................................................... 51
3 Smart cover ................................................................................................................................... 52
3.1 Why does my phone enter the smart cover mode sometimes when I turn on the screen? .......................................... 52
3.2 What can I do if my phone accidentally identifies the leather case and turns off the screen? .................................... 52
3.3 Why doesn't answering calls with gestures work in smart cover mode? .................................................................... 52
3.4 Why does my phone automatically open its music player when attached with a leather case? .................................. 52
3.5 Why can't I operate my phone on the transparent plastic sheet after my phone is attached with a leather case? ....... 53
3.6 How do I change the clock style? ............................................................................................................................... 53
4 Camera, music, and video .......................................................................................................... 54
4.1 Why is the DTS effect not obvious? ........................................................................................................................... 54
4.2 Why can't I view photos I have taken before after I open the camera by double pressing the volume down button? 54
4.3 Can I disable the shutter sound for snapshots? ........................................................................................................... 54
4.4 How do I enable the snapshot function? ..................................................................................................................... 54
4.5 Why can I only view the current photo after I have set the security lock for my screen?........................................... 54
4.6 Why can't the headset provided with iPhone work properly for my phone? ............................................................... 55
4.7 Why does my phone play songs when I press the button on my headset? .................................................................. 55
4.8 Why can't the optional headset work properly? .......................................................................................................... 55
4.9 Why does smearing occur when I view photos in full screen from the Pictures folder in Gallery? ........................... 55
4.10 Why do I hear strange noises through the headset? .................................................................................................. 55
4.11 What can I do if the other party can't hear my voice when I am making a phone call using my headset?................ 55
4.12 Why is Music automatically opened after I inserted a headset to my phone? .......................................................... 56
4.13 Why do I hear a sound when I shake my phone? ...................................................................................................... 56
4.14 Why is the ringtone of an incoming call suddenly muted? ....................................................................................... 56
4.15 How do I prevent my phone from charging the noise reduction headset? ................................................................ 56
4.16 Why is the sound not stable when I play songs in speaker mode at a small volume (two to three bars)? ................ 57
4.17 Why can I hear noise or current noise when I play songs in speaker mode at the minimum volume? ..................... 57
4.18 Why can't I play MPEG-4 videos? ............................................................................................................................ 57
4.19 How do I modify the application that I use to share photos? .................................................................................... 57
4.20 Why is the date in Gallery several years ago? .......................................................................................................... 57
4.21 Why is there light leakage around the battery cover after I turn on flash? ............................................................... 58
4.22 Why isn't music paused when I answer calls? .......................................................................................................... 58
4.23 Why isn't there a ringtone for incoming calls after I set the volume to the maximum? ............................................ 58
4.24 What can I do if I can't use the snapshot function? ................................................................................................... 58
4.25 Why are the photos I take in ultra snapshot mode not as good as the photos I take in normal mode? ..................... 58
4.26 Why is the volume of the recorded video small? ...................................................................................................... 58
4.27 Why does it take longer to focus when I take photos at a short distance from the object than when I take photos at a
long distance from the object? .......................................................................................................................................... 59
4.28 Why is the photo focus unclear when I take a photo in a dark environment? ........................................................... 59
4.29 Why does the photo become vague after I zoom in? ................................................................................................ 59
4.30 Why is my phone severely overheated after I take photos or shoot videos for a certain time period? ..................... 59
4.31 Why are the photos I take using the front camera reverse?....................................................................................... 59
4.32 Can I modify watermark images? ............................................................................................................................. 60
4.33 Why do I see a gap when I tilt my phone and look into it through the flash lens? ................................................... 60
4.34 Why do photos taken at night have speckled pixels? ................................................................................................ 60
4.35 Why do videos taken near lights have ripples? ......................................................................................................... 60
4.36 Why does my face look thinner and my eyes bigger in my selfie? ........................................................................... 60
4.37 Why is the photo of a moving object blurred? .......................................................................................................... 60
4.38 Why is the image on the viewfinder blurred until 2 to 3 seconds after I open the camera? ...................................... 61
4.39 Why does the photo of bulbs I take at night have radial halo? ................................................................................. 61
4.40 Why is the photo of a night scene still dark even after I turn on flash? .................................................................... 61
4.41 Why is the viewfinder red when I cover the camera with my hand? ........................................................................ 61
4.42 Why is the photo taken with flash on blurred? ......................................................................................................... 61
4.43 Why do the photos I take with flash on have red eyes or bright spots? .................................................................... 62
4.44 Why can't I find the photos I take after I set the default storage location for photos to the external microSD card? 62
4.45 Why doesn't beauty mode work for burst shots? ...................................................................................................... 62
4.46 How is the time displayed on the ultra snapshot screen calculated? ......................................................................... 62
4.47 In what scenarios does special vibration effect work? .............................................................................................. 62
4.48 Why do the photos I take with flash on have color cast? .......................................................................................... 63
4.49 Why is the focusing slow when I take photos in all-focus mode? ............................................................................ 63
4.50 Why does the video recording suddenly stop? .......................................................................................................... 64
4.51 Why do the photos taken on some scenes appear bright while the photos taken on other scenes have obvious bright
and dark contrast? ............................................................................................................................................................. 64
4.52 What can I do if I see black spots and smudges on the viewfinder after I use the camera for several months? ....... 64
4.53 Why is the photo focus unclear after I dropped my phone to the ground? ............................................................... 64
4.54 What can I do if I can't use the flash? ....................................................................................................................... 64
4.55 Why are the photos blurred? ..................................................................................................................................... 65
4.56 What are the differences between Super night mode of my phone and long exposure of other phones? ................. 65
4.57 What are the requirements toward the shooting environment in Super night mode? ................................................ 65
4.58 Why do some areas of the photo in preview mode seem red? .................................................................................. 66
4.59 Why is there an occulting stripe on the viewfinder when I am shooting scenes with light color background? ........ 66
4.60 Why do the photos seem red with a high saturation degree? .................................................................................... 66
4.61 Why do the brightness and color change when I touch on the previewed photo? .................................................... 66
4.62 Why is the photo loaded slowly after I shoot it? ....................................................................................................... 66
4.63 Why are there white dots on the photos taken against strong light? ......................................................................... 66
4.64 Why does the viewfinder have shadows or seem red when I am taking photos with flash turned on? ..................... 67
4.65 If my phone has no microSD card installed, can I take photos or shoot videos? ...................................................... 67
4.66 Why can't I open some photos or videos on my phone? ........................................................................................... 67
4.67 Where are my photos and videos saved by default? Can I change the save location? .............................................. 67
4.68 How do I edit photos or videos? Can I add a frame to a photo? ............................................................................... 68
4.69 Does my phone support HD videos? ........................................................................................................................ 68
4.70 Can I disable the shutter sound? ............................................................................................................................... 68
4.71 How do I toggle between the front and rear cameras? .............................................................................................. 68
4.72 What video formats and sizes does my phone support? ............................................................................................ 68
4.73 What photo formats and sizes does my phone support? ........................................................................................... 68
4.74 How do I switch between shooting modes? .............................................................................................................. 68
4.75 Why does my gallery display only the photos I have taken? .................................................................................... 69
4.76 Will my phone stop playing streaming media when a call comes in? If yes, will it resume playing when the call
ends? ................................................................................................................................................................................. 69
4.77 My phone can't play some streaming media. Why? .................................................................................................. 69
4.78 What might cause poor quality of online streaming media played on my phone? .................................................... 69
4.79 Will simultaneously playing and downloading online streaming media take up my phone's storage space? ........... 69
4.80 Why can't audio control of my camera function properly? ....................................................................................... 70
4.81 Why doesn't the photo file name contain .pdf after I saved it in PDF format? ......................................................... 70
4.82 Why can't I view the screenshots but only photos I have taken when I set Gallery in timeline mode? .................... 70
4.83 Why do photos still rotate after I disable the auto-rotate function? .......................................................................... 70
4.84 Why are there no sounds when I play videos in MKV format? ................................................................................ 72
4.85 How do I set the microSD card as my default save location for photos and videos?................................................ 72
4.86 What can I do if I can't open some photos or audiovisual files on my phone? ......................................................... 72
4.87 What can I do if I can't play online music or videos? ............................................................................................... 72
4.88 What can I do if online music or videos are not played smoothly on my phone? ..................................................... 72
4.89 How do I display lyrics in sync with the songs I play? ............................................................................................. 73
4.90 How do I use the headset provided with my phone to control the music player? ..................................................... 73
4.91 Why can't the photos I take be displayed in full screen mode? ................................................................................. 73
4.92 What can I do if the photos I take are blurred and dark? .......................................................................................... 74
4.93 How do I adjust the sizes of the photos I take? ......................................................................................................... 74
4.94 How do I take photos in all-focus mode? ................................................................................................................. 74
4.95 How do I disable the beauty mode of the camera? ................................................................................................... 74
4.96 What can I do if there are no sounds when I view an online video? ......................................................................... 74
4.97 What can I do if the sound quality of the songs I play in speaker mode is bad? ....................................................... 75
4.98 What can I do if the volume is small when I listen to music with a headset? ........................................................... 75
4.99 Why can I open the radio only after I insert a headset to my phone? ....................................................................... 75
4.100 Can I listen to the radio in speaker mode? .............................................................................................................. 75
4.101 How do I set the radio to turn off at a scheduled time? .......................................................................................... 76
4.102 How do I adjust the volume of the radio? ............................................................................................................... 76
4.103 How do I add the location information to a photo? ................................................................................................ 76
4.104 How do I set a photo to display its shooting time and place? ................................................................................. 76
4.105 What can I do if the online video player is exited abnormally when I am watching an online video? ................... 76
4.106 How do I edit photos taken in all-focus mode?....................................................................................................... 76
4.107 Why can't I shoot panoramic photos? ..................................................................................................................... 77
4.108 How do I take macro photos? ................................................................................................................................. 77
4.109 Why is the panoramic photo discontinuous? .......................................................................................................... 77
4.110 How do I modify the watermark texts? ................................................................................................................... 77
4.111 How do I turn off flash? .......................................................................................................................................... 77
4.112 What is ISO? ........................................................................................................................................................... 77
4.113 What is white balance? ........................................................................................................................................... 77
4.114 How do I turn on flash when shooting photos? ....................................................................................................... 78
4.115 How can I capture moving objects? ........................................................................................................................ 78
4.116 How do I cancel scheduled photo shooting? ........................................................................................................... 78
4.117 Why can't some photos in Gallery be properly displayed? ..................................................................................... 78
4.118 How do I view all photos in timeline mode? .......................................................................................................... 78
4.119 Why does the screen blink when I flick left and right to view photos in full screen mode in Gallery? .................. 78
4.120 How do I find the photos and videos on the microSD card after they are lost? ...................................................... 79
4.121 Why is the focusing time sometimes short and sometimes long? ........................................................................... 79
4.122 Why does it take a long time to refresh the preview or stop shooting in Star track mode when I am using Light
painting? ........................................................................................................................................................................... 79
4.123 How do I switch between the four modes of Light painting? ................................................................................. 79
4.124 Why are the photos I take using Light painting in hand held mode are blurred? .................................................... 80
4.125 How do I achieve good photos using Light graffiti mode of Light painting? ......................................................... 80
4.126 How do I take good photos using Tail light trails mode of Light painting? ............................................................ 81
4.127 How do I achieve good photos using Silky water mode of Light painting? ........................................................... 81
4.128 Why are the track lines thick on photos taken in Light graffiti mode in a dark room? ........................................... 81
4.129 Why is the photo that I take using Light painting white? ....................................................................................... 81
4.130 Why isn't there any change on the viewfinder after I touch the shooting button in Star track mode of Light
painting? ........................................................................................................................................................................... 81
4.131 How do I use Director Mode? ................................................................................................................................. 82
4.132 What can I do if the screen freezes when I am using Director Mode? .................................................................... 84
4.133 What can I do if the guest phone can't find the host phone? ................................................................................... 84
4.134 What can I do if the guest phone can't connect to the host phone? ......................................................................... 86
4.135 How do I view videos taken in Director Mode? ..................................................................................................... 86
4.136 How to I remove a guest phone from the current group? ....................................................................................... 86
4.137 Can I use Director Mode to shoot videos when my phone's battery level is low? .................................................. 87
4.138 Why can't other phones create groups in Director Mode? ...................................................................................... 87
4.139 Why does my phone generate heat after I use Director Mode for a while? ............................................................ 87
4.140 Will Director Mode consume data traffic? .............................................................................................................. 87
4.141 Why can't I add background music when I am editing a video using Director Mode? ........................................... 87
4.142 How does the host phone control the shooting on the guest phone in Director Mode? .......................................... 87
4.143 Is the sound recorded by the guest phone or host phone when the screen of the guest phone is displayed on the
host phone? ....................................................................................................................................................................... 88
4.144 Why does the original sound disappear when I add background music in Director Mode? ................................... 88
4.145 Why can't I use Director Mode on some phones? ................................................................................................... 88
4.146 Why are the beauty effects of photos taken using Perfect selfie different from those in beauty mode? ................. 88
4.147 Why are the beauty effects of two persons different on the photos taken using Perfect selfie? .............................. 88
4.148 Why are the faces seem red on the photos taken using Perfect selfie? ................................................................... 88
4.149 Why is the photo taken using Perfect selfie reverse compared to the preview? ..................................................... 89
4.150 What can I do if the camera fails to focus, there is shadowing, or the viewfinder is shaky when taking photos
using the OIS camera? ...................................................................................................................................................... 89
4.151 How many stabilization axes does the phone's camera have? ................................................................................ 89
4.152 Why can't the stabilization function work properly on a bus or in the subway? ..................................................... 89
4.153 Why is the OIS inferior to an SLR camera? ........................................................................................................... 89
4.154 Why is the viewfinder blurred when I am shooting a moving object? .................................................................... 90
4.155 Why are the photos still blurred even if my phone is provided with a OIS camera? .............................................. 90
4.156 What are the differences between the RGBW sensor and the RGB sensor? ........................................................... 90
4.157 Why is the image drifting in preview, especially in digital zoom mode? ............................................................... 90
4.158 Why is the photo quality affected if I stop shooting early in Super night mode? ................................................... 90
4.159 Can I edit the watermarks in watermark mode?...................................................................................................... 91
4.160 How can I use Light painting? ................................................................................................................................ 91
4.161 What can I do if the photos taken using Light painting are the same as those taken in normal mode? .................. 91
4.162 How do I use my camera to scan a QR code? ......................................................................................................... 91
4.163 What are the special functions of Perfect selfie? .................................................................................................... 91
4.164 What can I do if my face isn't thinner using Perfect selfie? .................................................................................... 91
4.165 What are the differences between the video shooting in Director Mode and that in normal mode? ....................... 92
4.166 How do I shoot better photos using time-lapse mode? ........................................................................................... 92
4.167 Why does ultra snapshot still work when the screen is turned on? ......................................................................... 92
4.168 Why can't I find the photos I have taken in Gallery? .............................................................................................. 92
4.169 Why can't ultra snapshot work? .............................................................................................................................. 92
4.170 Why isn't there sound coming out from the right side of my phone when I am playing videos in speaker mode? 92
4.171 Why is music played by two music apps at the same time after I pressed the headset button? .............................. 93
4.172 Why can't my phone play flash videos? .................................................................................................................. 93
4.173 How to I improve my selfies? ................................................................................................................................. 93
4.174 How do I adjust the speed for time-lapse mode? .................................................................................................... 94
4.175 Can I adjust the focal length in time-lapse mode? .................................................................................................. 94
4.176 Why are the photos taken using Light painting white? ........................................................................................... 94
4.177 Can I customize the shooting words for audio control? .......................................................................................... 95
4.178 How do I customize the shooting parameters of Super night mode? ...................................................................... 95
4.179 Why can't Object recognition work properly? ........................................................................................................ 96
4.180 How do I hide all photos? ....................................................................................................................................... 96
4.181 What can I do if albums can't be displayed in coordinate format? .......................................................................... 97
4.182 How do I recover the hidden applications? ............................................................................................................. 99
4.183 What are the functions of Color correction? ........................................................................................................... 99
4.184 How do I use Smart headset control to play music? ............................................................................................... 99
4.185 Does my phone support Smart headset control? ................................................................................................... 101
4.186 Can I use Smart headset control to control other music players? ......................................................................... 101
4.187 Why do sounds come out from only one side at the bottom of my phone? .......................................................... 101
4.188 Why isn't OIS supported when I am recording a video? ....................................................................................... 101
4.189 When using a headset (Apple) during a call, why can't I hear very clearly despite adjusting the volume to the
loudest? ........................................................................................................................................................................... 101
4.190 When using the built-in video player to play MKV videos that use the AC3 audio codec, why is there no sound?
........................................................................................................................................................................................ 102
4.191 Can I use the active noise reduction headset for my phone? ................................................................................ 102
4.192 Can I download the application of Director Mode from Huawei App Center? Is Director Mode only pre-installed
on the P8? ....................................................................................................................................................................... 102
4.193 Where is the main microphone? Is the noise reduction microphone near the headset jack on the top of my phone?
........................................................................................................................................................................................ 102
4.194 Can I take macro photos with the camera? Does the camera support automatic and manual focus? ................... 103
4.195 Huawei Music: How does the one-touch HD audio feature work? If the audio quality is poor, how can I improve
it? .................................................................................................................................................................................... 103
4.196 Can I pause video capture on my phone? ............................................................................................................. 103
4.197 Why can videos captured in Director Mode only be stored in the phone's internal storage? ................................ 104
4.198 Why are there two LEDs on the camera flash? Why does only one LED light up? ............................................. 104
4.199 Why can't I turn on the flash when using digital zoom? ....................................................................................... 104
4.200 Why is the OIS not very effective? ....................................................................................................................... 104
4.201 Why are colors in photos taken by my phone so vivid? ........................................................................................ 104
4.202 How do I know if the noise-reduction headset has charging problems? ............................................................... 105
4.203 Can I change the subject of a Perfect Selfie shot? ................................................................................................ 105
4.204 Why does the audio stutter when I am playing downloaded music on my phone? ............................................... 105
4.205 Why do flashing vertical lines appear on the screen when I take photos in the dark? .......................................... 105
4.206 Why does my phone switch from full screen to half screen display when playing videos? ................................. 105
5 Calls and contacts ...................................................................................................................... 106
5.1 Can I activate quick calling if I touch and hold the volume button on my Bluetooth headset? ................................ 106
5.2 Why can't I use quick dialing to make a call when I have a SIM card inserted? ...................................................... 106
5.3 Why can't I make phone calls even though I have a 3G data signal? ........................................................................ 106
5.4 Why does 4G disconnect when I make calls? ........................................................................................................... 106
5.5 Why can't I make a call or why do calls disconnect even though I have good signal reception? ............................. 107
5.6 What do I if a dialogue box appears saying, Voicemail number missing when I make calls? .................................. 107
5.7 What do I do if I can't remove the New voicemail message from the drop-down notification panel? ..................... 107
5.8 What do I do if I frequently miss phone calls? ......................................................................................................... 107
5.9 What do I do if I hear static or sounds like "zzzzz" from electrical interference when I make calls? ...................... 108
5.10 What do I do if, in the middle of a call, the call is dropped and my phone enters airplane mode? ......................... 108
5.11 What do I do if I can't receive calls because the other party hears that my phone is currently in a call or busy? ... 108
5.12 When receiving a call, why does pressing the power button stop the incoming call from ringing? ....................... 109
5.13 Why can't I answer or reject phone calls? ............................................................................................................... 109
5.14 When I import contacts, why does the number of contacts decrease? .................................................................... 109
5.15 Why are some calls merged and some calls recorded on separate lines in the call log after merging two instances of
the same contact? ............................................................................................................................................................ 109
5.16 What do I do if my contacts are displayed improperly after synchronizing contacts with What's App? ................ 109
5.17 Why doesn't my call log merge? ............................................................................................................................. 109
5.18 Why doesn't my phone display the contact photo for incoming calls even after I have set the contact photo? ...... 110
5.19 Why do I hear echoes during phone calls?.............................................................................................................. 110
5.20 Why does the phone ringtone volume automatically decrease? .............................................................................. 110
5.21 Why are calls choppy or why can't a party or both parties hear the voice during phone calls? .............................. 110
5.22 What can I do if my phone's music playback volume in speaker mode is small? ................................................... 111
5.23 What can I do if the playback volume of call records is small? .............................................................................. 111
5.24 What can I do if the call recipient can't hear me clearly or can't hear me at all? .................................................... 111
5.25 What can I do if the receiver's volume is small? ..................................................................................................... 111
5.26 Why is there noise when I am playing songs in speaker mode? ............................................................................. 111
5.27 Why do I hear noise in the downlink during a phone call in the handsfree mode? ................................................. 112
5.28 Why is my phone powered off when I press the power button? ............................................................................. 112
5.29 Why can't I create a contact photo? ........................................................................................................................ 112
5.30 How many contacts can the phone save? ................................................................................................................ 112
5.31 Why can't I make a call when my phone shows I have 4G signal? ......................................................................... 112
5.32 Where are the call recordings saved? ...................................................................................................................... 113
5.33 How do I switch between calls or merge two calls to have a conference call? ....................................................... 113
5.34 What will my phone display when one card is being used for a call and the other receives a call? ....................... 113
5.35 How do I view call logs? ........................................................................................................................................ 113
5.36 Why doesn't a contact appear in my phonebook after successfully adding the contact using the dialer? ............... 114
5.37 Why does my phone suddenly dial a number? ........................................................................................................ 114
5.38 How can I set the quick calling function? ............................................................................................................... 114
5.39 When my dual-card phone displays emergency calls, why can I make calls? ........................................................ 114
5.40 Why is the incoming number displayed as unknown? ............................................................................................ 114
5.41 How can I record a phone call?............................................................................................................................... 115
5.42 Why is the screen still off after I move my phone away from my ear?................................................................... 115
5.43 How do I delete call records? ................................................................................................................................. 115
5.44 Why does the call ringtone automatically revert to the default ringtone? ............................................................... 115
5.45 How can I delete the pre-installed ringtone? .......................................................................................................... 116
5.46 How do I export contacts to another phone using a SIM card? .............................................................................. 116
5.47 How do I export contacts to another phone using a storage device? ...................................................................... 116
5.48 How do I assign a unique ringtone for a contact or contact group? ........................................................................ 117
5.49 How do I assign a photo to a contact? .................................................................................................................... 117
5.50 How do I display the contacts in the SIM card? ..................................................................................................... 117
5.51 How can I cancel the keypad touch sound? ............................................................................................................ 117
5.52 How can I query the missed calls? .......................................................................................................................... 117
5.53 How can I add multiple numbers to a contact? ....................................................................................................... 117
5.54 How can I set the contact storage location? ............................................................................................................ 118
5.55 How can I set the blacklist of the incoming calls? .................................................................................................. 118
5.56 Why can't I hear the voice of another party during a call? ...................................................................................... 118
5.57 How can I bar the international calls? ..................................................................................................................... 118
5.58 How do I return to the call screen? ......................................................................................................................... 118
5.59 How do I activate the call waiting function? .......................................................................................................... 118
5.60 How do I forward all incoming calls to another phone number? ............................................................................ 118
5.61 How can I forward the unanswered calls to another phone number? ..................................................................... 119
5.62 How can I forward the unreachable calls to another phone number? ..................................................................... 119
5.63 How do I edit the text message for rejected incoming calls? .................................................................................. 119
5.64 How do I set the phone to automatically block malicious calls? ............................................................................ 119
5.65 How do I delete a favorite contact? ........................................................................................................................ 119
5.66 How do I remove a contact from the blacklist? ...................................................................................................... 119
5.67 How do I delete intercepted call and SMS logs? .................................................................................................... 120
5.68 How do I quickly mute the incoming call? ............................................................................................................. 120
5.69 How do I quickly dial a number? ............................................................................................................................ 120
5.70 How can I set the contact blacklist? ........................................................................................................................ 120
5.71 How do I merge contacts?....................................................................................................................................... 120
5.72 How do I perform quick calling using my Bluetooth headset? ............................................................................... 120
5.73 How can I disable the quick calling function? ........................................................................................................ 120
5.74 Why do contacts from IM apps such as WeChat appear as separate contacts? ....................................................... 121
5.75 Why can't I select the SIM card for making calls?.................................................................................................. 121
5.76 Why can't I receive calls even when the signal strength is strong? ......................................................................... 121
5.77 Why does my phone end a call if I press the power button during the call? ........................................................... 121
5.78 Why does my phone vibrate when I answer a call? ................................................................................................ 121
5.79 Why are the imported contacts garbled? ................................................................................................................. 122
5.80 How do I check the time of a missed call? ............................................................................................................. 122
5.81 Why does the speaker/receiver/rear cover on my phone vibrate when I am making calls? .................................... 122
6 Storage and file management ................................................................................................. 123
6.1 After tethering the phone, why does my computer lose Internet connectivity? ........................................................ 123
Go to Settings > More > Tethering & portable hotspot and enable USB tethering. ....... 123
6.2 After taking a screenshot, why can't I find the image file? ....................................................................................... 123
6.3 What do I do if the internal storage is full and an error message appears when applications are opened? ............... 123
6.4 Can I install a microSD card to my phone? .............................................................................................................. 123
6.5 When starting a USB flash disk update, why are some files copied at the beginning of the update process? .......... 124
6.6 When two phones are connected together and set up, why don't the USB options pop up? ..................................... 124
6.7 Why does the task manager show that my phone has less than 2/3 GB of internal storage free? ............................. 124
6.8 Why does my phone show that memory is still in use after clearing recent apps using the brush? .......................... 124
6.9 What can I do if an error occurs when transmitting data using a USB cable? .......................................................... 124
6.10 What do I do if no notification pops up on my phone after connecting it to a computer? ...................................... 125
6.11 How do I use my microSD card? ............................................................................................................................ 125
6.12 What do I do if I am unable to open USB debugging? ........................................................................................... 125
6.13 What do I do if my phone will not connect to a computer when in USB debugging mode? .................................. 125
6.14 How do I check the remaining space in the phone's internal storage and microSD card? ...................................... 125
6.15 How do I find the default storage location of my files? .......................................................................................... 125
6.16 How do I format the internal storage? .................................................................................................................... 126
6.17 Why is data lost when I remove my microSD card? ............................................................................................... 126
6.18 How do I change the location where files are stored? ............................................................................................ 126
6.19 How do I save files downloaded from the browser directly to the microSD card? ................................................. 126
6.20 How do I move files to the microSD card? ............................................................................................................. 126
6.21 How do I format the microSD card? ....................................................................................................................... 126
6.22 Can the Files sort files by type? .............................................................................................................................. 126
6.23 How can I check my phone's information? ............................................................................................................. 127
6.24 After I connect my phone to a computer using a USB cable, what do View photos, Manage files, and USB storage
in the drop-down notification panel mean? .................................................................................................................... 127
6.25 Why can't my phone connect to a computer? ......................................................................................................... 127
6.26 Why can't I use my computer to view photos on my phone after connecting my phone to a computer with a USB
cable and choosing View photos in the drop-down notification panel? .......................................................................... 127
1. The View photos mode only allows you to view photos or screenshots in your
phone's internal storage. ............................................................................................................. 127
2. If you have an external microSD card, you can touch USB storage in the drop-down
notification panel to use your computer to view photos on your phone. ......................... 127
6.27 Why won't my car play music or videos when I connect my phone to a car with a USB cable? ............................ 128
6.28 Why can't my phone connect to computers that run Windows 7 and 8 while in Manage files mode?.................... 128
6.29 How can I connect my phone to a computer running Linux or OSX? .................................................................... 128
6.30 How do I enable USB debugging mode (required by a third-party app)?............................................................... 128
6.31 In Manage files mode, why are the files displayed on the computer different to those displayed on the phone? ... 129
6.32 How can I safely remove an OTG cable connected to a USB flash drive? ............................................................. 129
Go to Settings > All > Storage > My SD card and touch Unmount SD card. ................... 129
6.33 Why is it hard to insert or remove the data cable? .................................................................................................. 129
7 Smart infrared ............................................................................................................................ 130
7.1 Does my phone support smart infrared? ................................................................................................................... 130
8 Location service and navigation ............................................................................................. 131
8.1 Why does the GPS positioning function fail? ........................................................................................................... 131
8.2 Why can't the GPS of my phone search for a satellite? ............................................................................................ 131
8.3 Why can't a third-party application map load the map data? .................................................................................... 131
8.4 Why can't the installed third-party positioning application locate correctly? ........................................................... 132
8.5 Why does the GPS icon occasionally appear on the status bar? ............................................................................... 132
8.6 Why is the compass inaccurate? ............................................................................................................................... 132
8.7 Is the GPS function charged? .................................................................................................................................... 132
8.8 What can I do when the GPS software locates slowly or fails to locate? ................................................................. 132
8.9 What can I do if the GPS positioning is inaccurate? ................................................................................................. 133
8.10 How can I enable the GPS? .................................................................................................................................... 133
8.11 How do I use the GPS on my phone? ..................................................................................................................... 133
8.12 How can I use the GPS with an offline map? ......................................................................................................... 134
8.13 What are LBS? ........................................................................................................................................................ 134
8.14 How do I enable the LBS? ...................................................................................................................................... 134
8.15 Does the LBS use the data traffic? .......................................................................................................................... 134
8.16 What can I do when the LBS is unavailable? ......................................................................................................... 134
8.17 What can I do when the LBS fails?......................................................................................................................... 134
8.18 What is GPS? .......................................................................................................................................................... 135
8.19 Does the GPS use huge data traffic? ....................................................................................................................... 135
8.20 How can I reduce the data traffic usage fee when using GPS on my phone? ......................................................... 135
8.21 What can I do if the GPS information is inaccurate? .............................................................................................. 135
8.22 How can I strengthen the GPS signals? .................................................................................................................. 135
8.23 What is the working principle of GPS? .................................................................................................................. 136
8.24 What are the differences between GPS and base station positioning? .................................................................... 136
8.25 How can I prohibit an application from acquiring personal location information? ................................................ 136
Go to Settings > All > Location access and disable Network location. ............................. 136
9 SIM card and appearance ........................................................................................................ 137
9.1 Why does my phone read the contacts from the SIM card slowly? .......................................................................... 137
9.2 Why can't I insert a non-standard SIM card into my phone? .................................................................................... 137
9.3 Why can't I insert the SIM card into my phone smoothly? ....................................................................................... 137
9.4 Why are the outer surfaces of the SIM and microSD card trays and the surfaces of the aluminum decorations uneven?
........................................................................................................................................................................................ 138
9.5 Why doesn't the SIM card slot have springs? ........................................................................................................... 138
9.6 Why are the two gaps on the two sides of the SIM card tray harsh? ........................................................................ 138
9.7 What can I do if the SIM or microSD card installation direction is hard to identify? .............................................. 138
9.8 Why does the SIM card tray shake?.......................................................................................................................... 138
9.9 Why are there marks left on the cover after I connected my phone to a USB cable for multiple times? .................. 138
9.10 Why does the plastics around the touchscreen easily get dirty? ............................................................................. 139
9.11 Why is the gap between the battery cover and the mechanical part large? ............................................................. 139
9.12 Why is my phone's front camera deviated? ............................................................................................................ 139
9.13 Why is my phone bent and deformed after I sit on it? ............................................................................................ 139
9.14 Why does my phone's charging port seem black and used? ................................................................................... 140
9.15 Why does the side button (power button or volume button) shake? ....................................................................... 140
9.16 What can I do if my phone doesn't respond after I press the power button? ........................................................... 140
9.17 Why are there two black bars on the USB port of my phone that I just purchased? ............................................... 140
9.18 Is my phone's warranty still valid if I remove the network access license or the license is damaged? ................... 140
9.19 Why can't I take out the microSD card inserted in the SIM card tray? ................................................................... 140
9.20 Can I insert an iPhone 5/5s nano-SIM card to my phone? ...................................................................................... 141
9.21 Why does the plastics around the battery cover easily get dirty? ........................................................................... 141
9.22 Why does my phone's frame seem bumped after I use it for a while? .................................................................... 141
9.23 How do I take out the SIM card tray without the eject tool? .................................................................................. 141
9.24 Why do I have to push the SIM card tray really hard for it to come out? ............................................................... 141
9.25 Why does the camera decoration rub against my hand? ......................................................................................... 142
9.26 What can I do if the battery cover is not flat? ......................................................................................................... 142
9.27 Why do I hear sounds when I press the phone buttons? ......................................................................................... 142
9.28 Why do I feel the buttons loose or tight? ................................................................................................................ 142
9.29 Can I remove the battery cover and take out the built-in battery? .......................................................................... 142
9.30 Why are there no indications on the two card trays? .............................................................................................. 142
9.31 Can I insert a micro-SIM card to my phone? .......................................................................................................... 143
9.32 What is the width of my phone's frame? ................................................................................................................. 143
9.33 Why are phone's side buttons uneven? ................................................................................................................... 143
9.34 Why is rear camera lens off-center and why does it move when shaken? .............................................................. 143
9.35 Why does the rear camera rattle when I shake the phone? ..................................................................................... 143
9.36 Why is there a gap between the phone's screen and cover? .................................................................................... 143
9.37 Why is the square frame surrounding the rear camera slightly askew? .................................................................. 144
9.38 Why does my phone's rear cover bend inward when pressed down? ..................................................................... 144
10 Messaging and email .............................................................................................................. 145
10.1 Why doesn't the multimedia message send report take effect? ............................................................................... 145
10.2 Why doesn't the multimedia message read report take effect? ............................................................................... 146
10.3 Why can't I log in to the company's email using the Exchange? ............................................................................ 146
10.4 What can I do if I can't connect to the server when refreshing my emails? ............................................................ 147
10.5 Why can't I send or receive SMSs? ......................................................................................................................... 147
10.6 Why did my phone send a message to an unknown number? ................................................................................. 147
10.7 What can I do if an SMS receiving/sending exception occurs after I installed a third-party security app on my
phone? ............................................................................................................................................................................. 147
10.8 What can I do if my phone doesn't prompt for new SMS reception? ..................................................................... 147
10.9 Why is the image attached to the multimedia message I sent to another phone unclear? ....................................... 148
10.10 Why does my phone prompt twice for a new incoming SMS? ............................................................................. 148
10.11 Why doesn't my phone play any tone for received SMSs? ................................................................................... 148
10.12 Why doesn't my phone display the SMSs according to the time sequence and why are some SMSs fixed to the top?
........................................................................................................................................................................................ 150
10.13 Why is the messaging app displayed as stopped or not the default messaging app? ............................................ 150
10.14 Why can't I receive some SMSs? .......................................................................................................................... 150
10.15 Why can't I receive the SMSs pushed by my email? ............................................................................................ 150
10.16 Why can't I log in to Gmail using Exchange? ....................................................................................................... 150
10.17 How can I lock a specific message or delete messages in batch? ......................................................................... 150
10.18 How do I forward a message, send a message to multiple recipients, and save a message as a draft? What is the
maximum number of messages that I can send to multiple recipients? .......................................................................... 151
10.19 How many text messages can be saved on my phone? ......................................................................................... 151
10.20 What can I do if I can't send or receive multimedia messages? ............................................................................ 151
10.21 Is there any restriction on the size, format, or resolution of the file to be attached to a multimedia message? .... 152
10.22 Where are the multimedia message attachments saved? ....................................................................................... 152
10.23 How do I configure email settings? ...................................................................................................................... 152
10.24 Can I view emails when no Internet connection is available on my phone? ......................................................... 153
10.25 How do I synchronize contacts and calendar events? ........................................................................................... 153
10.26 Why can't I change the ringtone and vibration settings of my email? .................................................................. 153
10.27 How can I set a different ringtone for the messages? ........................................................................................... 154
10.28 How do I preview new messages on the notification panel? ................................................................................ 155
10.29 Can I restore deleted messages? ........................................................................................................................... 155
10.30 Is there any restriction on the email attachment size? ........................................................................................... 155
10.31 Why doesn't my phone play any tone?.................................................................................................................. 155
10.32 How can I add a message signature? .................................................................................................................... 156
10.33 How do I hide the sender information when forwarding a message? ................................................................... 157
10.34 How do I send contact information using the multimedia message? .................................................................... 157
10.35 How can I block harassment messages? ............................................................................................................... 157
10.36 How do I remove an email account? ..................................................................................................................... 158
10.37 How can I view the contacts on the blacklist? ...................................................................................................... 158
10.38 Can I change the Message ringtone?..................................................................................................................... 159
10.39 What can I do if I can't send or receive multimedia messages? ............................................................................ 161
11 Networking and data sharing ............................................................................................... 162
11.1 Why does the 4G icon appear very briefly and then disappear after I have inserted a 2G/3G SIM card? .............. 162
11.2 Why is the signal bar showing no signal? ............................................................................................................... 162
11.3 Why can't I access the Internet when attempting to browse web pages or download files? ................................... 162
11.4 Why can't I use mobile data services when roaming? ............................................................................................. 163
11.5 Why is the Internet connection slow? ..................................................................................................................... 163
11.6 Why is the signal strength weak when I place my phone on a metal surface or use a metal case? ......................... 163
11.7 Why can't I access the Internet or use mobile data services? .................................................................................. 164
II Other solutions ......................................................................................................................... 164
11.8 Why does my phone have no signal after I take it out from my pocket and become normal after I restart it? ....... 164
11.9 Why can't I access 4G when using a 4G SIM card? ................................................................................................ 164
11.10 Why is the signal unstable? ................................................................................................................................... 165
11.11 Why is there no signal suddenly? .......................................................................................................................... 165
11.12 How do I share a network and enable a Wi-Fi hotspot? ........................................................................................ 165
11.13 How do I set a static IP address for my phone to connect to a Wi-Fi network? .................................................... 166
11.14 How do I set the modem function of my phone to connect to the computer? ....................................................... 166
11.15 Does my phone support SIM card hot swapping? ................................................................................................. 166
11.16 Why is my daily data usage refreshed to my monthly data limit after my data usage exceeds the monthly limit?
........................................................................................................................................................................................ 166
11.17 Why can't I access LTE services when using an LTE phone? ............................................................................... 167
11.18 How can I save my data usage? ............................................................................................................................ 167
11.19 How do I set my phone not to automatically recover the mobile network connection when the Wi-Fi connection is
interrupted? ..................................................................................................................................................................... 167
11.20 Why can't I connect my phone to an OTG cable? ................................................................................................. 168
11.21 Why can't I connect my phone to a USB drive using an OTG cable? ................................................................... 168
11.22 Can I connect my phone to a mouse or a keyboard using an OTG cable? ............................................................ 168
11.23 Why can't I transfer files to another Bluetooth device that I've already paired with? ........................................... 168
11.24 How do I view my phone's MAC address? ........................................................................................................... 168
11.25 How can I tell whether the phone is connected to the Internet using mobile data or Wi-Fi network? .................. 169
11.26 How do I view mobile data usage? ....................................................................................................................... 169
11.27 Can I share my phone's mobile network connection using a USB cable? ............................................................. 169
11.28 How can I tell whether my phone supports Bluetooth tethering? ......................................................................... 169
11.29 What is a Wi-Fi hotspot? ....................................................................................................................................... 169
11.30 Why is the data connection on one of the SIM cards very slow? .......................................................................... 170
11.31 How do I add a bookmark in the built-in web browser? ....................................................................................... 170
11.32 How do I close pages in the built-in browser? ...................................................................................................... 170
11.33 How do I open a new page in the built-in browser? .............................................................................................. 170
11.34 How do I delete personal data from the built-in browser? .................................................................................... 170
11.35 How do I save an image from a web page?........................................................................................................... 170
11.36 How do I transfer files using OTG? ...................................................................................................................... 171
11.37 How can I set up USB tethering? .......................................................................................................................... 171
11.38 Why is the network speed slow when I use the Wi-Fi connection? ...................................................................... 171
11.39 When I send files using Bluetooth, why does the Wi-Fi connection sometimes become unavailable? ................ 171
11.40 Why can't I access the Internet in ultra power saving mode?................................................................................ 171
11.41 How can I access 4G? ........................................................................................................................................... 171
11.42 How do I disable the 4G network connection? ..................................................................................................... 172
11.43 Why does my phone have no 4G signal? .............................................................................................................. 172
11.44 Does the 4G network consume much traffic? ....................................................................................................... 172
11.45 Do I need to change my phone number or SIM card before I can access 4G? ...................................................... 172
11.46 Why can't I access the 4G network? ..................................................................................................................... 172
11.47 Why is my phone displaying the 3G icon when I am using a 4G SIM card? ........................................................ 173
11.48 Can my 4G phone use the 3G card? ...................................................................................................................... 173
11.49 What is 4G?........................................................................................................................................................... 173
11.50 Why does the 4G phone consume more traffic than the 3G phone? ..................................................................... 173
11.51 How can I use the 4G service? .............................................................................................................................. 173
11.52 Why is the usage calibration message of Phone Manager incorrect or is the calibration failed? .......................... 173
11.53 Why can I use only the 2G network? .................................................................................................................... 174
11.54 What is Signal+? ................................................................................................................................................... 174
11.55 Where can I learn the Signal+ description? .......................................................................................................... 174
11.56 What is Roaming+? ............................................................................................................................................... 174
11.57 Where can I learn the Roaming+ description? ...................................................................................................... 174
11.58 My phone displays the 3G or 2G symbol even after I turn off mobile data. Will this use my mobile data allowance?
........................................................................................................................................................................................ 174
12 Screen and display .................................................................................................................. 176
12.1 What can I do if my screen is erratic? ..................................................................................................................... 176
12.2 Why can I see some horizontal lines under lights when the screen is turned off? .................................................. 176
12.3 Why can't my screen respond properly when I swipe on the screen to unlock it? .................................................. 176
12.4 Why does my phone automatically open applications or display screens when I am using the phone while it is
charging? ........................................................................................................................................................................ 177
12.5 Why is the automatic adjustment of the LCD brightness not consecutive? ............................................................ 177
12.6 Why does my screen have scratches? ..................................................................................................................... 177
12.7 Why does the screen seem too dark or bright? ....................................................................................................... 177
12.8 Why do ripples appear on my screen when I press it hard? .................................................................................... 178
12.9 What can I do if my screen is exposed to water? .................................................................................................... 178
12.10 What can I do if my screen looks a little yellow? ................................................................................................. 178
12.11 Why is there backlight leakage on my phone's screen when it is turned off? ....................................................... 179
12.12 Why do I find bright spots, dark spots, impurity spots, or black spots on my screen? ......................................... 179
12.13 Why are there black bands at the top and bottom of the screen? .......................................................................... 180
12.14 Why does the screen on my phone have a red tinge or why is the screen blurred? .............................................. 180
12.15 Why does my screen automatically change or why does my phone automatically open software? ..................... 180
12.16 Why is my phone's touchscreen inaccurate when playing games? ....................................................................... 180
12.17 Why does the touchscreen sometimes fail to respond? ......................................................................................... 181
12.18 Why does my screen turn off when I am using a third-party application? ............................................................ 181
12.19 Why does the screen turn off during a call? .......................................................................................................... 181
12.20 What can I do if the screen can't automatically rotate? ......................................................................................... 181
12.21 What can I do if I forget the screen unlock pattern or password? ......................................................................... 182
12.22 Why is the touchscreen slow or unresponsive during normal use? ....................................................................... 182
12.23 How do I remove the camera shortcut button in the lower right corner of the lock screen? ................................. 184
12.24 How do I delete a home screen? ........................................................................................................................... 184
12.25 What can I do if the screen stays on when my phone is charging? ....................................................................... 184
12.26 How do I set a live wallpaper? .............................................................................................................................. 184
12.27 How do I take a screenshot? ................................................................................................................................. 184
12.28 How do I set the time for my screen to automatically go to sleep? ...................................................................... 185
12.29 Why is my screen sometimes bright and sometimes dark? ................................................................................... 185
12.30 How do I set the home screen transition effects? .................................................................................................. 185
12.31 How do I add a widget to the home screen? ......................................................................................................... 185
12.32 How do I disable auto-rotate? ............................................................................................................................... 186
12.33 How do I exit simple UI? ...................................................................................................................................... 186
12.34 How do I use the screen lock widget?................................................................................................................... 186
12.35 Cam I operate my phone when my hands are wet? ............................................................................................... 187
12.36 How do I switch back to the home screen in preview mode? ............................................................................... 187
12.37 How do I set a longer screen timeout period? ....................................................................................................... 187
12.38 How do I enable the interactive screensaver? ....................................................................................................... 187
12.39 When does my phone display the interactive screensaver? .................................................................................. 188
12.40 How do I customize the existing themes on my phone? ....................................................................................... 188
The figures are for your reference only. The actual screens may vary. ..... Error! Bookmark
not defined.
12.41 After moving from a dark place to a light place, why is the phone screen slow to turn on when there is an
incoming call? ................................................................................................................................................................. 188
12.42 Why does my phone's screen freeze frequently and why is there a yellow frame around the screen? ................. 188
12.43 How can I take screenshots on my phone? ........................................................................................................... 188
12.44 How do I re-enable Magazine unlock? ................................................................................................................. 189
12.45 Why does the screen turn red for an instant when I turn it off? ............................................................................ 189
13 System settings ........................................................................................................................ 190
13.1 What can I do if I can't find English words in my words in Huawei Swype? ......................................................... 190
13.2 Why aren't there shortcut number buttons on the keypad of Huawei Swype? ........................................................ 190
13.3 What can I do if I can't use a newly installed text input method? ........................................................................... 190
13.4 How do I change the system font size? ................................................................................................................... 190
13.5 What input methods does my phone come with? .................................................................................................... 191
13.6 How do I disable key press vibration? .................................................................................................................... 191
13.7 What can I do if my phone can't automatically adjust its screen brightness? ......................................................... 191
13.8 What can I do if my phone can't automatically rotate its screen? ........................................................................... 191
13.9 Why does the font size remain unchanged after I set it to large? ............................................................................ 191
13.10 Where can I draw the unlock pattern after I turn on the screen? ........................................................................... 191
Go to Settings > All > Privacy & security > Screen lock & passwords. Touch Password.
.......................................................................................................................................................... 191
13.11 Why can't I unlock my screen when I swipe upwards or downwards on the lock screen? ................................... 191
13.12 How do I exit Developer options? ........................................................................................................................ 192
13.13 What can I do if my phone automatically sends messages in the background to query the data usage? .............. 193
13.14 Why does a blinking red frame appear on my screen? ......................................................................................... 193
13.15 How do I set the remaining battery level to be displayed in percentage? ............................................................. 193
13.16 Why can't I lock my screen during phone calls and isn't there any screen locking sound? .................................. 193
13.17 Why are the folder icons disordered? ................................................................................................................... 193
13.18 Why are the icons disordered after I unlock the screen, and why are the icons automatically recovered after I
re-arrange them? ............................................................................................................................................................. 194
13.19 Why do all the other icons move up a level when I delete an icon from the home screen? .................................. 194
13.20 Why does Magazine unlock get stuck at a certain percentage when updating? .................................................... 194
13.21 Why are certain icons disappeared or overlapped? ............................................................................................... 194
13.22 Why can't I find the camera app icon on the home screen? .................................................................................. 194
13.23 Why is the screen brightness a little darker when I browse a web page?.............................................................. 195
13.24 Will the screen brightness increase if I enable normal power saving mode? ........................................................ 195
13.25 How do I set tones on my phone? ......................................................................................................................... 195
13.26 How do I set a screen unlock PIN? ....................................................................................................................... 195
13.27 How do I set a screen unlock pattern? .................................................................................................................. 196
13.28 What can I do if I forget the unlock pattern? ........................................................................................................ 196
13.29 How do I lock and unlock the screen? .................................................................................................................. 196
13.30 How do I add or remove an alarm? ....................................................................................................................... 196
13.31 How do I set the Weather app? ............................................................................................................................. 197
13.32 How do I view the Developer options? ................................................................................................................. 197
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Huawei GAR-UL00 FAQ
- Category
- Smartphones
- Type
- FAQ
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