Huawei P9 Plus Owner's manual

Brand: Huawei

Model: P9 Plus

Category: Smartphones

Type: Owner's manual

Smartphone General FAQs

Issue

Date

2016-04-17

HUAWEI TECHNOLOGIES CO., LTD.

Issue 01 (2016-04-17)

Huawei Proprietary and Confidential

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:

[email protected]

Smartphone General FAQs

Contents

Issue 01 (2016-04-17)

Huawei Proprietary and Confidential

Contents

1 Battery and charging ..................................................................................................................... 1

1.1 When my phone is charging, why does the indicator not blink for new messages or missed calls? ............................. 1

1.2 How do I preserve my phone's battery? ........................................................................................................................ 1

1.3 Why does it take a long time to charge my phone? ...................................................................................................... 1

1.4 Why does my phone repeatedly restart when connected to a charger and powered on? ............................................... 2

1.5 Why are there unusual power changes? ........................................................................................................................ 2

1.6 Why can't my phone charge properly? .......................................................................................................................... 2

1.7 Why can't I charge my phone with a computer USB port? ........................................................................................... 3

1.8 Can I use phone chargers made by other brands? ......................................................................................................... 3

1.9 Does using the phone during charging affect the battery life? ...................................................................................... 3

1.10 Why does my phone generate heat? ............................................................................................................................ 4

1.11 When my phone is charging, why does my hand feel numb when I touch my phone? ............................................... 7

1.12 What can I do if the USB cable gets overheated ......................................................................................................... 8

1.13 What can I do if water enters the charger? .................................................................................................................. 8

2 Hardware and appearance ........................................................................................................... 9

2.1 Why is there a gap between the front and rear covers? ................................................................................................. 9

2.2 Why is there light leakage when the screen is turned off? ............................................................................................ 9

2.3 Why is the camera off-center? ...................................................................................................................................... 9

2.4 Why does the back of my phone become loose when I press it? ................................................................................ 10

3 System functions and settings .................................................................................................. 11

3.1 Can I set screen calibration? ....................................................................................................................................... 11

3.2 Why does my phone not display a notification when the unlock password I enter exceeds the specified length? ..... 11

4 Network and data sharing ......................................................................................................... 12

4.1 Data services ............................................................................................................................................................... 12

4.1.1 Is the standby time longer with 4G than 3G? ........................................................................................................... 12

4.1.2 When I touch SIM card applications, why does my phone say there is no STK menu service? .............................. 12

4.1.3 After data services are turned off, why does the 3G icon still show? ...................................................................... 12

4.1.4 Why can't I access the 4G network? ........................................................................................................................ 12

4.1.5 Why is my phone displaying the 3G icon when I am using a 4G SIM card? .......................................................... 13

4.1.6 Does my 4G phone support 3G SIM cards? ............................................................................................................ 13

4.1.7 Are 4G phones more data-intensive than 3G phones? ............................................................................................. 13

Smartphone General FAQs

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iii

4.1.8 Why does the 4G signal become unstable or disconnect from the network when my phone is installed with a 2G or

3G SIM card? .................................................................................................................................................................... 13

4.1.9 Why does my phone have an unstable signal or no signal? ..................................................................................... 13

4.1.10 How do I view my phone IMEI? Why are there two IMEIs on my phone? .......................................................... 14

4.1.11 How do I know whether my phone is using Wi-Fi or mobile data? ....................................................................... 14

4.2 Wi-Fi ........................................................................................................................................................................... 14

4.2.1 Why do network names of scanned hotspots appear as gibberish? .......................................................................... 14

4.2.2 What can I do if the list of available Wi-Fi hotspots does not update? .................................................................... 14

4.2.3 What can I do if, after I have entered the Wi-Fi password, the confirm button is grayed out? ................................ 14

4.2.4 Why has my phone automatically switched to another Wi-Fi hotspot? ................................................................... 14

4.2.5 What can I do if I can't get on to the Internet even when my phone is connected to Wi-Fi? ................................... 15

4.2.6 What can I do if the Wi-Fi MAC address displays "unavailable"? .......................................................................... 15

4.2.7 Why doesn't my phone connect to Wi-Fi when I am using Bluetooth? ................................................................... 15

4.2.8 Why is the Wi-Fi speed slow? Why is the Wi-Fi signal weak? ............................................................................... 15

5 Security and payment ................................................................................................................. 16

5.1 Fingerprint identification ............................................................................................................................................ 16

5.1.1 Why can't I use my fingerprint to unlock my phone when the screen is locked with a third-party application? ..... 16

5.1.2 What can I do if my phone fails to read my fingerprint? ......................................................................................... 16

5.1.3 What can I do if my phone unlocks using an unregistered fingerprint? ................................................................... 17

5.1.4 Why can I unlock my screen even when my finger is not perfectly aligned with the fingerprint sensor? ............... 17

5.1.5 What can I do if I can't register fingerprints? ........................................................................................................... 17

5.2 Data security ............................................................................................................................................................... 17

5.2.1 What passwords can be set on my phone? How do I retrieve a password if it is lost? ............................................ 17

6 Camera and gallery ..................................................................................................................... 19

6.1 Why is the photo orientation incorrect? ...................................................................................................................... 19

6.2 Why are there ripples on the viewfinder? ................................................................................................................... 19

7 Messaging and email .................................................................................................................. 20

7.1 Messaging ................................................................................................................................................................... 20

7.1.1 Why can't I send or receive SMS messages? ........................................................................................................... 20

7.1.2 Why is there a delay for receiving message? ........................................................................................................... 20

7.1.3 Why are the MMS message images received unclear? ............................................................................................ 20

7.1.4 Why can't I send or receive MMS messages? .......................................................................................................... 21

7.1.5 Why is a long text message I received split into segments? .................................................................................... 21

7.1.6 Why does my phone tell me that the message was sent successfully even for an invalid number? ......................... 22

7.1.7 Why do I receive the same message multiple times on my phone? ......................................................................... 22

8 Location services and navigation ............................................................................................. 23

8.1 Does using GPS on my phone incur data fees or other charges? ................................................................................ 23

8.2 What can I do if my phone can't locate my position due to a weak GPS signal? ........................................................ 23

8.3 What is the difference between GPS positioning and location determination by carrier base station?....................... 23

9 Accessories.................................................................................................................................... 25

Smartphone General FAQs

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9.1 Can my phone be connected to an iPhone using Bluetooth? ...................................................................................... 25

10 Miscellaneous ............................................................................................................................ 26

10.1 What can I do if can't power on my phone normally? .............................................................................................. 26

10.2 What can I do if the volume and power buttons aren't working? .............................................................................. 26

10.3 Why is my phone so slow? ....................................................................................................................................... 27

10.4 What can I do if water gets inside my phone? .......................................................................................................... 27

10.5 Can I use my phone with wet hands? ........................................................................................................................ 28

10.6 Why does my phone enter other applications when I touch the Back key? .............................................................. 28

10.7 Are Huawei smartphones manufactured by non-Huawei factories? ......................................................................... 28

Smartphone General FAQs

1 Battery and charging

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1 Battery and charging

1.1 When my phone is charging, why does the indicator

not blink for new messages or missed calls?

This is a normal phenomenon.

This is because when your phone is charging, the indicator prioritizes in indicating the

charging status, so it will not blink for notifications.

1.2 How do I preserve my phone's battery?



Use the charger that comes with your phone to charge the battery.



Don't use your phone when charging.



Charge the battery from time to time, which can increase its lifespan. Don't wait until the

battery level becomes low.



Use the battery from time to time. Otherwise, the battery power may be completely

drained, resulting in charging failures.



Don't place the battery in environments with low temperature, high temperature, or

significant temperature changes, because the battery lifespan may be shortened.

1.3 Why does it take a long time to charge my phone?



Check whether you are using the original charger. Charging your phone using a

non-standard small-load charger or computer USB port may limit the current and require

more time. It is recommended that you use the charger provided with your phone.



Check whether the data cable,charger, and socket are connected properly. If not,

reconnect them.



Check whether the data cable,charger, or socket is damaged. If so, replace them.



Check whether the charger plug and charging port are clean. Wipe any dust away using

alcohol or a brush. If you use alcohol, wait for it to dry before you charge your phone

again.



The charging time may be prolonged if you use your phone or turn on the screen when

charging. This is because your phone has to supply power to the screen, reducing the

Smartphone General FAQs

1 Battery and charging

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charging current to the battery. Your phone has an overheat protection mechanism design.

The charging current is limited when your phone overheats so that your phone can be

held comfortably in your hand. This will prolong the charging time. It is recommended

that you not use your phone when it is charging, especially to watch videos or play

games.



Your phone has a special feature to guarantee your safety by slowing down the charging

speed when your phone battery is 80% or more full or almost fully charged until your

phone reaches a full charge.



If the problem persists, take your phone and the purchase invoice to an authorized

Huawei service center for repair.

1.4 Why does my phone repeatedly restart when connected

to a charger and powered on?

Check whether the charger is the one issued with the phone. Smaller capacity chargers or

computer USB connector have restrictions on current when charging. When the battery is

over-full there is insufficient current to start the phone, leading to repeated restarts. Try using

the charger issued with the phone.

If the battery power is completely drained, charge your phone for more than 10 minutes

before powering it on again.

If the problem persists after the steps detailed above, please back up important data and take

the receipt issued with your phone to an authorized Huawei service center for repair.

1.5 Why are there unusual power changes?



Restart your phone.



After backing up important data, restore factory settings.



If the problem persists after the steps detailed above, please back up important data and

take the receipt issued with your phone to an authorized Huawei service center for repair.

1.6 Why can't my phone charge properly?



Check that the data cable, charger, charging port, and plug connect properly. Try

unplugging and then plugging back in.



Check that the data cable, charger, charging port, and plug are not damaged. If they are

damaged, replace them.



Check whether the phone is overheated. Huawei smartphones are specially designed to

avoid overheating. When the phone becomes too hot, it will no longer charge. Avoid

power-intensive functions such as playing games, watching videos, or browsing the

Internet.



If the battery is completely out of power, connect the standard charger for 5 minutes and

then check whether the phone is working properly again.



If you use a power bank to charge your phone, please check whether the output current

matches that of the charger issued with the phone. If not, charging may fail.

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1 Battery and charging

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

If the problem persists after the steps detailed above, please back up important data and

take the receipt issued with your phone to an authorized Huawei service center for repair.

1.7 Why can't I charge my phone with a computer USB

port?



Check whether the indicator is on and whether your phone displays a USB connection

notification. If not, check whether the data cable has a poor connection or whether it is

damaged. It is recommended that you re-insert or replace the data cable.



If you are connecting to a desktop computer, connect the data cable to a rear USB port

on the computer.



If you are connecting to a laptop, connect the phone and computer with the data cable via

the USB port. Do not use a USB extension cable because the external USB sport may not

provide sufficient power.



If the problem persists after the steps detailed above, try using the charger issued with

the phone.

1.8 Can I use phone chargers made by other brands?

It is recommended that you use the charger issued with your phone.

If you need to use a non-Huawei charger:



Make sure you use chargers certified by an accepted authority. Please check the

certification on the label. Certified chargers are relatively safe.



Make sure the charger plug is identical with that of the charger issued with your phone.



Check whether the output current or voltage is consistent with or lower than that of the

charger issued with your phone. For details, refer to the instructions on the charger label.

The lower the output current or voltage is, the longer the charging time.

1.9 Does using the phone during charging affect the

battery life?

When the phone is charging, power is provided by the charger. Therefore, in theory there

should be no damage to battery life caused by use of the phone during charging.

However, we do not advise using the phone while it is charging because the phone is designed

to work off the battery. When charging, the phone's power supply is provided through the

charger. The large current may lead to instability and therefore use of the phone during this

time will cause the phone to heat up. We suggest you use the phone after it is fully charged.

We do not advise receiving or making calls while charging.

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1 Battery and charging

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1.10 Why does my phone generate heat?

Normal heat generation:

It is normal that smartphones heat up as their performance improves. Generally, a smartphone

heats up relatively more in summer when the temperature is high and relatively less in other

seasons when the temperature is not so high.



The phone generates heat when it has been working for a long time.

Your phone is equipped with an advanced design balancing heat generation, power

consumption, and phone performance. Lab data shows that your phone has better heat

control performance than similar products.



The phone generates heat during standby.

Power-intensive applications or third-party manager applications often continuously take

up your phone's CPU power, which may also result in excessive heat and high power

consumption. It is recommended that you perform the following steps to see whether the

problem is resolved.

− Open Phone Manager to check for power-intensive applications running in the

background and close the unneeded ones.

− Restart your phone.

− Back up your phone data to a microSD card or computer and restore your phone to

factory settings.



The phone generates heat when charging.

It is normal for your phone to generate heat during charging, especially if your phone

supports quick charging. The phone will generate more heat during quick charging than

normal charging.

If a phone supports quick charging, it is provided with a large-capacity battery and a 9

V/2 A high voltage quick charger, which shortens the charging time but generates more

heat. But please rest assured. All the improvements in the user experience of our phones

are built upon safety in use. Based on data from strict comparison lab tests, charging

with our 9 V/2 A high voltage quick charger does generate more heat than with a regular

5 V/2 A or 5 V/1 A charger, but with a much better heat control than most similar phones

in the market using 9 V/2 A charging.

When your phone is charging:

− Do not use your phone for too long.

− Place your phone in an environment with good heat dissipation, such as on a table.

Your phone may overheat more if it is placed in an environment with good heat

insulation, such as in a bed.

− Power off your phone if it feels too hot. Wait for it to cool down, and then restore

the factory settings or update it to the latest software version.



The phone generates heat when you are surfing the Internet.

To reduce overheating:

− Do not surf the Internet when the signal reception is poor. Otherwise, your phone

may overheat due to increased transmission power.

− Use the native browser to surf the Internet.

− If you are using a third-party browser, set it to no-picture browsing mode.

− Avoid performing multiple operations at the same time, for example, listening to

music while surfing the Internet.



The phone generates heat when you are playing games.

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Games consume more battery power than calls, videos, and music.

It is recommended that you don't play games while your phone is charging. Also you can

close all background applications when you are playing games or lower the volume level

to reduce the heat and increase your phone's battery life.



The phone generates heat when you are taking photos, shooting videos, or

recording your screen.

− In order to take excellent quality photos, your phone is equipped with an SLR-level

image processing chip. The chip consumes a relatively high amount of power. As a

result, you will sense obvious heat generated by your phone after taking photos

non-stop for a long time. But with the overheating safety protection that we have

added to your phone, it will usually not generate excessive heat.

− Recording your phone's screen puts an additional load on the phone's CPU, which

causes the phone to generate more heat than usual. This is a normal phenomenon.

When your phone exits recording mode, the temperature will gradually decrease to

a normal level.



The phone generates heat when you are watching videos.

Video players differ in power consumption due to the different codecs used. It is

recommended that you use the pre-installed gallery and video player on your phone

because they have been sufficiently optimized to consume less power and generate less

heat.

It is recommended that you not watch videos while your phone is charging.



The phone generates heat when you are using third-party applications.

Third-party applications, such as social networking applications, frequently require a

network. Voice services and videos consume a lot of battery power and generate heat.

For example:

− To browse social networking applications, your phone needs to download lots of

data (images and videos) and connect to the Internet constantly, so it is normal for

your phone to generate heat. If you are in an area with poor network reception, your

phone will generate even more heat.

− The reason that your phone generates heat when you are making video calls on a

social networking application is that this function consumes a large amount of

power, as your phone is shooting video, uploading and downloading data at the

same time.

We are already working with related application developers to optimize this issue.

Please update your system on time to receive the latest optimizations.



The phone generates heat when you are making video calls.

The reason that your phone generates heat when you are making video calls is that this

function consumes a large amount of power, as your phone is shooting video, uploading

and downloading data at the same time, so it is normal for your phone to generate more

heat when you are making video calls than when you are just watching videos or

listening to music. When you stop making video calls, your phone's temperature will

gradually decrease.



The phone generates heat when you are making calls.

The heat generated mainly depends on the signal. The heat generated by your phone

increases rapidly when the signal is poor.

It is recommended that you make calls with a headset in a place with strong signal

reception. To reduce the power consumption and heat generated by your phone, it is

recommended that you not keep your screen on for a long time during calls, or charge

your phone during calls.

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

The phone generates heat when you are using a navigation application.

Navigation applications consume a lot of your phone's power, so it is normal that your

phone is overheated. Your phone may overheat more easily in the following scenarios:

− If you haven't downloaded an offline map to your phone, map data will keep being

downloaded during navigation and your phone will generate more heat.

− If the signal is poor or unstable, the transmission power will be increased and your

phone will generate more heat.

− If you use navigation while charging your phone, your phone will generate more

heat.

It is recommended that you not use your phone in a place with high temperatures or

directly in sunlight.



The phone generates heat when you are listening to songs.

It is normal if you feel that your phone is overheated when you are listening to songs.

Your phone's music playing quality has been improved and so more heat may be

generated while you're playing music. This is also normal.

It is recommended that you not play music through the speaker for a long time at a large

volume and not download music files or perform other operations while you are listening

to songs.



The phone generates heat when you are updating your phone.

To speed up the update process and save time, your phone's CPU runs at a high

frequency during updating, which causes your phone to generate a lot of heat. This is a

normal phenomenon. When the update is complete, the temperature of your phone will

gradually decrease to a normal level.

Problems caused by heat generation:



The volume is reduced.

Your phone speaker adopts a special protection mechanism which is triggered when the

temperature is too high and the volume is reduced. The volume will return to the original

level once the temperature returns to normal.

Check whether the volume returns to the original level after a while. If so, your phone is

functioning properly.



It takes a long time to charge your phone.

Huawei phones are all designed with a heat protection mechanism. When your phone

overheats, the charging current will be limited to make sure your phone still feels

comfortable in your hand. This will prolong the charging time. The charging current will

return to normal once your phone cools down.

To shorten the charging time, it is recommended that you use the charger issued with your

phone, turn off the screen, and close any background applications (such as video players and

games).

Abnormal heat generation:

If your phone suddenly generates excessive heat (at the center of your phone and the frame

near the power button) at a certain time, or if the phone becomes noticeably overheated when

you're running simple operations or not running any operations, and the battery life is

obviously shortened, this means some applications in your phone are consuming extra battery

power.

Recommendations for reducing excessive phone heat:

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It is normal for your phone to generate heat when charging or when you are using

power-intensive functions or applications, such as playing games, surfing the Internet, making

phone calls etc. You may reduce excessive phone heat in the following ways:



Choose the appropriate power plan in Phone Manager.



Choose appropriate brightness and volume settings.

− Reduce the screen brightness. If your screen is too bright, a lot of power will be

consumed and it may bother your eyes. Swipe down from the status bar and touch

Shortcuts. Drag the brightness slider to an appropriate position and turn on Auto.

− When adjusting the volume level, remember that if the volume is too high your

phone will consume power quickly and the bottom on the back will get hot. Try

setting the volume to an average level or lower and don't keep your phone at a high

volume level for a long time.



Reduce the number of applications used at the same time.

− The Android system supports running multiple applications at the same time. When

multiple applications are running at the same time, phone power usage and heat

increase. Please reduce the number of running applications and close applications

that aren't needed.

− Conveniently clean up applications running in the background: To close

applications running in the background, touch and hold the bottom right icon in the

virtual navigation bar to show recently used applications. Swipe your finger up to

stop applications that do not need to run in the background.

− Reduce the number of protected background applications. Go to Phone Manager

and close unneeded applications to prevent them from consuming power while

running in the background.

− Check for power-intensive applications. Go to Phone Manager and close or

uninstall the unneeded applications.

1.11 When my phone is charging, why does my hand feel

numb when I touch my phone?



Check whether the charger cover is damaged. If so, electric leakage may have occurred.

In this case, stop using the charger and replace it with an original charger.



Check whether you are using a Huawei standard charger or the original charger that you

purchased from a Huawei store through official channels.

If you are using the original charger and your hand feels numb when you touch your

phone, this may be because a slight charge exchange has occurred between your body

and the environment, stimulating your nerves. This is similar to the electrostatic

phenomenon that may occur when you take off your sweater on a winter night. Check

whether your other chargers also have this problem for comparison.



Check whether your phone is connected to a normal household power supply for

charging.

Smartphone General FAQs

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1.12 What can I do if the USB cable gets overheated



Check whether water has entered the USB port, causing a short circuit. If so, shake the

water out, blow your phone dry with a fan, or keep your phone in a place with good

ventilation for 4 hours.



Check whether metal (such as a wire) has got inside the USB port, causing a short circuit.

If so, power off your phone and use tweezers to remove the metal, or take your phone

and the purchase invoice to an authorized Huawei service center for repair.



Check whether you are using the original charger and USB cable. Some data cables with

poor quality may cause short circuits and overheat. It is recommended that you use the

original charger and data cable for charging.

1.13 What can I do if water enters the charger?

If water enters the charger, do not use it. For your safety, it is recommended that you purchase

an original charger from an official Huawei website or authorized Huawei service center as

soon as possible.

Smartphone General FAQs

2 Hardware and appearance

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2 Hardware and appearance

2.1 Why is there a gap between the front and rear covers?

This is a normal phenomenon.

Due to process engineering and the thermal expansion and contraction of materials, it is

normal that there a small gap between the front and rear covers. All Huawei smartphones

undergo rigorous cosmetic inspection including checking for gaps before leaving the factory,

and ensure that they meet industry quality standards. If you think the gap is too large, try

inserting two sheets of A4 paper (0.2 mm thick in total) into the gap.If the paper can be

smoothly inserted into the gap, back up important data and take your phone and the purchase

invoice to an authorized Huawei service center to check for quality issues.

2.2 Why is there light leakage when the screen is turned

off?

This is a normal phenomenon and there are no quality issues with your phone.

Any smartphone may have this phenomenon where the screen appears white after the phone is

turned off. This is related to the luminance of the screen and does not indicate that the phone

is faulty. If you think that there is too much light leakage, back up your important data and

take your phone and the purchase invoice to an authorized Huawei service center to check for

quality issues.

2.3 Why is the camera off-center?

The camera functions are not affected even if the camera looks off-center.

The camera assembly of Huawei smartphones outperforms the industry standards (Huawei

standards: less than 0.25 mm; industry standards: less than 0.3 mm). Please rest assured.

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2 Hardware and appearance

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2.4 Why does the back of my phone become loose when I

press it?

This is normal and will not affect the functions of your phone.

General smartphone batteries may slightly change in thickness with the battery level. To

ensure safe use of the battery, a safety gap is reserved between the battery and the rear cover.

Therefore, the rear cover may become loose or deformed when pressed. Huawei smartphones

are strictly tested before delivery.

[Note:If the user asks whether they can replace the phone within during the warranty

period,inform them that phone replacement is not covered under warranty if there are no

functional issues.]

Smartphone General FAQs

3 System functions and settings

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3 System functions and settings

3.1 Can I set screen calibration?

The screen is a capacitive screen and does not require calibration.

3.2 Why does my phone not display a notification when

the unlock password I enter exceeds the specified length?

The system is designed this way.

Your phone will not display a notification even when the unlock password you enter exceeds

the specified length. This is because if a notification is shown, the password length will be

exposed and can be easily viewed by others. Numerical passwords with a fixed length are

easily cracked, posing security risks to your personal information.

Smartphone General FAQs

4 Network and data sharing

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4 Network and data sharing

4.1 Data services

4.1.1 Is the standby time longer with 4G than 3G?

No. The standby time is related mainly to the signal strength.



If there is a strong 4G signal then the phone will conserve more power than when using

3G.



If the signal strength is equal, 3G is more power-efficient than 4G. This is because 4G

uses a higher bandwidth and therefore uses up more power on standby.

4.1.2 When I touch SIM card applications, why does my phone

say there is no STK menu service?

The STK menu is supported by the SIM card. Currently 4G cards provided by certain carriers

do not provide STK menu services. This is not a malfunction of the phone. For details, please

consult your carrier.

4.1.3 After data services are turned off, why does the 3G icon still

show?

The 3G icon in the status bar does not indicate data services. It indicates the phone signal.

4.1.4 Why can't I access the 4G network?

Check that:



Your phone supports the 4G network.



If your phone is a customized version, you can only access the 4G network using the

SIM card issued by the corresponding carrier.



The SIM card is a 4G card.



You have activated the 4G data plan and the enabled the 4G network connection on your

phone.



The carrier provides local 4G network coverage.

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4.1.5 Why is my phone displaying the 3G icon when I am using a

4G SIM card?

Check that you are using a 4G SIM card. If not, change your SIM card.

If the 4G signal is weak or there is no 4G coverage, your phone will automatically switch to a

3G network and display the 3G signal icon.

4.1.6 Does my 4G phone support 3G SIM cards?

Yes. Your phone supports 3G SIM cards issued by the same carrier.

4.1.7 Are 4G phones more data-intensive than 3G phones?

This is a misunderstanding.

Downloading from a 4G network is faster than 3G/2G network, but faster downloads do not

necessarily mean faster use of data. How much data is used depends on the user and is not

affected by the network or phone.

However, data is transmitted more quickly across 4G networks. If the phone is used in the

wrong way then it will use data very quickly. We recommend turning off mobile data services

when you do not require mobile network access.

4.1.8 Why does the 4G signal become unstable or disconnect from

the network when my phone is installed with a 2G or 3G SIM

card?

If the 4G signal is unstable and the network connection is interrupted in an area with 4G

coverage, this is because 4G services have not been activated on the SIM card. If your phone

supports 4G but does not have 4G services activated, the network will constantly remind your

phone to connect to 4G, but your phone will be rejected by the network, resulting in

disconnection from the network.

If 4G services have not been activated on your phone, it is recommended that you turn 4G off.

4.1.9 Why does my phone have an unstable signal or no signal?



Check whether your phone has a protective cover, in particular a metal protective cover.

If so, remove the metal protective cover and try again. Metal may interfere with the

signal and cause communication failures for your phone.



Check whether you are using a standard SIM card. A cut SIM card or card adapter may

not fit the card slot properly and cause a communication failure such as no network

service or a weak signal. If this is the case, it is recommended that you visit a service

counter and replace your SIM card with a standard one.



Update your phone to the latest version and check whether the signal improves.



Compare with other phones to check whether the signal strength is the same.

If the signal strength is the same on other phones, there may be a problem with the local

network coverage. It is recommended that you contact the carrier for consultation.

If the signal reception is apparently weaker than other phones and the problem persists

after the steps detailed above, please back up important data and take the receipt issued

with your phone to an authorized Huawei service center for repair.

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4.1.10 How do I view my phone IMEI? Why are there two IMEIs

on my phone?

The International Mobile Equipment Identity (IMEI) is a unique number used to identify your

phone. To view your phone IMEI, dial *#06# on the dialer screen.

A single SIM card phone has only one IMEI, while a dual SIM card dual standby phone may

have two IMEIs.

4.1.11 How do I know whether my phone is using Wi-Fi or mobile

data?

Check the connection status in the status bar on the top of your phone's screen.

If there is a icon in the status bar, your phone is using Wi-Fi connection. If there is a

, , or icon with up and down arrows in the status bar, your phone

is using mobile data.

4.2 Wi-Fi

4.2.1 Why do network names of scanned hotspots appear as

gibberish?

If the hotspot name contains Chinese characters or special characters, it will appear as an

unreadable code on your phone. When setting up a hotspot, choose a name using roman

characters and numbers. Avoid using Chinese or special characters.

4.2.2 What can I do if the list of available Wi-Fi hotspots does not

update?

Restart the phone. If the problem persists, restore the phone to factory settings.

4.2.3 What can I do if, after I have entered the Wi-Fi password, the

confirm button is grayed out?



Make sure the password you have entered is correct. It is recommended that you select

the show password option.



Make sure the entered password is at least 8 digits long. If it is less than 8 digits, reset

the router password via WPA-PSK or WPA2-PSK authentication, making sure the new

password is at least 8 digits long.

4.2.4 Why has my phone automatically switched to another Wi-Fi

hotspot?

When the current Wi-Fi network is weak or unstable, and there is a better Wi-Fi network that

you have connected your phone to before, your phone will automatically switch to the better

Wi-Fi network. If you do not want to connect to the hotspot, touch it, and then touch Forget.

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4.2.5 What can I do if I can't get on to the Internet even when my

phone is connected to Wi-Fi?



If your phone is connected to a public network, check whether the network requires

website registration.



Check to make sure other phones are able to connect to the Internet. If they are not able,

this may indicate a network abnormality.



Connect to a Wi-Fi hotspot near the router or within the hotspot range. If you constantly

fail to connect to the Internet, restart your phone or router.

If the problem persists after the steps detailed above, please back up important data and take

the receipt issued with your phone to an authorized Huawei service center for repair.

4.2.6 What can I do if the Wi-Fi MAC address displays

"unavailable"?

1. The Wi-Fi MAC address can only be read when Wi-Fi is enabled. If Wi-Fi is turned off, the

MAC address cannot be obtained and the "unavailable" message will appear. To solve this

problem, enable Wi-Fi.

2. If Wi-Fi is enabled and the "unavailable" message still appears, restart you phone.

4.2.7 Why doesn't my phone connect to Wi-Fi when I am using

Bluetooth?

Bluetooth and Wi-Fi share the same antenna in your phone. When Bluetooth is taking up a lot

of the phone's resources, Wi-Fi performance can decrease or the connection can drop. Please

turn off the Bluetooth and try again.

4.2.8 Why is the Wi-Fi speed slow? Why is the Wi-Fi signal weak?



Connect to Wi-Fi located near a router. If your phone is too far away from the router or

there is a wall between your phone and the router, the signal may be weaker and the

network speed reduced.



Make sure the protective cover of your phone is plastic or leather rather than metal, as a

metal protective cover will block your phone's antenna signal.



Check the router specifications.If it supports 5 GHz Wi-Fi, place the router in a higher

position.



Check whether other devices with large data transmission are running, for example, a TV

box for watching TV programs or a laptop for downloading movies. It is recommended

that you distribute the network resources properly.



Use speed test software to test the Wi-Fi speed and bandwidth speed. If the two are

significantly different, it is recommended that you restart the router and try again.

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Huawei P9 Plus Owner's manual

Brand: Huawei

Model: P9 Plus

Category: Smartphones

Type: Owner's manual

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Huawei P9 Plus Owner's manual

Huawei P9 Plus Owner's manual

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