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Network connection indicators................................................................................................................................................................................................................ 211
Turn on wireless coverage notification.................................................................................................................................................................................................... 212
About the preferred wireless network list............................................................................................................................................................................................... 212
Add a wireless network to the preferred wireless network list............................................................................................................................................................. 212
Change the order of preferred wireless networks.................................................................................................................................................................................. 213
Delete a wireless network from the preferred wireless network list.................................................................................................................................................... 213
Turn off data service.................................................................................................................................................................................................................................. 214
About roaming............................................................................................................................................................................................................................................ 214
Switch wireless networks manually......................................................................................................................................................................................................... 214
Verify the status of network connections and services......................................................................................................................................................................... 215
Wi-Fi connection settings......................................................................................................................................................................................................................... 215
Advanced Wi-Fi connection settings....................................................................................................................................................................................................... 218
UMA connection settings......................................................................................................................................................................................................................... 221
Wireless network coverage troubleshooting........................................................................................................................................................................................... 221
Power, battery, and memory..................................................................................................................................................................................................................... 223
Turn off your device................................................................................................................................................................................................................................... 223
Set your device to turn on and turn off automatically........................................................................................................................................................................... 223
Reset the device......................................................................................................................................................................................................................................... 223
Check the battery power level.................................................................................................................................................................................................................. 223
Extend battery life...................................................................................................................................................................................................................................... 223
Format the device memory or a media card........................................................................................................................................................................................... 224
View the amount of available memory.................................................................................................................................................................................................... 224
Best practice: Optimizing your device performance.............................................................................................................................................................................. 224
SIM card...................................................................................................................................................................................................................................................... 226
About the SIM card phone book............................................................................................................................................................................................................... 226
Add a contact to your SIM card................................................................................................................................................................................................................ 226
Copy contacts from your SIM card to your contact list......................................................................................................................................................................... 226
Copy a contact from your contact list to your SIM card........................................................................................................................................................................ 226
Change a SIM card contact...................................................................................................................................................................................................................... 227
Delete a SIM card contact........................................................................................................................................................................................................................ 227
Store SMS text messages on your SIM card........................................................................................................................................................................................... 227
About SIM card security............................................................................................................................................................................................................................ 228
Protect your SIM card with a PIN code................................................................................................................................................................................................... 228
Change the SIM card PIN code................................................................................................................................................................................................................ 228
Change the display name for a phone number...................................................................................................................................................................................... 228
Security........................................................................................................................................................................................................................................................ 229
Security basics............................................................................................................................................................................................................................................ 229
Password keeper........................................................................................................................................................................................................................................ 230
Encryption................................................................................................................................................................................................................................................... 233