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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.............................................................................................................................................................................................................................. 213
About roaming........................................................................................................................................................................................................................................ 214
Switch wireless networks manually.................................................................................................................................................................................................... 214
Verify the status of network connections and services................................................................................................................................................................... 214
Wi-Fi connection settings..................................................................................................................................................................................................................... 214
Advanced Wi-Fi connection settings.................................................................................................................................................................................................. 217
UMA connection settings..................................................................................................................................................................................................................... 220
Wireless network coverage troubleshooting..................................................................................................................................................................................... 220
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........................................................................................................................................................................................................................................ 227
About the SIM card phone book.......................................................................................................................................................................................................... 227
Add a contact to your SIM card........................................................................................................................................................................................................... 227
Copy contacts from your SIM card to your contact list.................................................................................................................................................................... 227
Copy a contact from your contact list to your SIM card.................................................................................................................................................................. 227
Change a SIM card contact.................................................................................................................................................................................................................. 228
Delete a SIM card contact.................................................................................................................................................................................................................... 228
Store SMS text messages on your SIM card...................................................................................................................................................................................... 228
About SIM card security........................................................................................................................................................................................................................ 228
Protect your SIM card with a PIN code.............................................................................................................................................................................................. 228
Change the SIM card PIN code........................................................................................................................................................................................................... 229
Change the display name for a phone number................................................................................................................................................................................. 229
Security......................................................................................................................................................................................................................................... 231
Security basics........................................................................................................................................................................................................................................ 231
Password keeper.................................................................................................................................................................................................................................... 232
Encryption............................................................................................................................................................................................................................................... 234