Network connection indicators.................................................................................................................................................................................................................207
Turn on wireless coverage notification.....................................................................................................................................................................................................145
About the preferred wireless network list...............................................................................................................................................................................................208
Add a wireless network to the preferred wireless network list............................................................................................................................................................208
Change the order of preferred wireless networks..................................................................................................................................................................................209
Delete a wireless network from the preferred wireless network list...................................................................................................................................................209
Turn off data service...................................................................................................................................................................................................................................209
About roaming..............................................................................................................................................................................................................................................210
Switch wireless networks manually...........................................................................................................................................................................................................210
Verify the status of network connections and services..........................................................................................................................................................................210
Wi-Fi connection settings..........................................................................................................................................................................................................................210
Advanced Wi-Fi connection settings.........................................................................................................................................................................................................213
UMA connection settings...........................................................................................................................................................................................................................216
Wireless network coverage troubleshooting............................................................................................................................................................................................216
Power, battery, and memory............................................................................................................................................................................................................219
Turn off your device.....................................................................................................................................................................................................................................219
Set your device to turn on and turn off automatically............................................................................................................................................................................219
Reset the device...........................................................................................................................................................................................................................................219
Check the battery power level....................................................................................................................................................................................................................219
Extend battery life........................................................................................................................................................................................................................................219
Format a media card ...................................................................................................................................................................................................................................98
View the amount of available memory.......................................................................................................................................................................................................98
Best practice: Optimizing your device performance..............................................................................................................................................................................220
SIM card...............................................................................................................................................................................................................................................223
About the SIM card phone book................................................................................................................................................................................................................223
Add a contact to your SIM card ................................................................................................................................................................................................................223
Copy contacts from your SIM card to your contact list..........................................................................................................................................................................223
Copy a contact from your contact list to your SIM card........................................................................................................................................................................223
Change a SIM card contact........................................................................................................................................................................................................................224
Delete a SIM card contact..........................................................................................................................................................................................................................224
Store SMS text messages on your SIM card..............................................................................................................................................................................................49
About SIM card security.............................................................................................................................................................................................................................224
Protect your SIM card with a PIN code....................................................................................................................................................................................................224
Change the SIM card PIN code.................................................................................................................................................................................................................225
Change the display name for a phone number.......................................................................................................................................................................................225
Security................................................................................................................................................................................................................................................227
Security basics..............................................................................................................................................................................................................................................227
Password keeper..........................................................................................................................................................................................................................................228
Encryption.....................................................................................................................................................................................................................................................230