Network connection indicators........................................................................................................................................................................................................... 209
Turn on wireless coverage notification............................................................................................................................................................................................... 210
About the preferred wireless network list.......................................................................................................................................................................................... 210
Add a wireless network to the preferred wireless network list....................................................................................................................................................... 210
Change the order of preferred wireless networks............................................................................................................................................................................ 211
Delete a wireless network from the preferred wireless network list............................................................................................................................................. 211
Turn off data service.............................................................................................................................................................................................................................. 211
About roaming........................................................................................................................................................................................................................................ 212
Switch wireless networks manually.................................................................................................................................................................................................... 212
Verify the status of network connections and services................................................................................................................................................................... 212
Wi-Fi connection settings..................................................................................................................................................................................................................... 212
Advanced Wi-Fi connection settings.................................................................................................................................................................................................. 215
UMA connection settings..................................................................................................................................................................................................................... 218
Wireless network coverage troubleshooting..................................................................................................................................................................................... 218
Power, battery, and memory..................................................................................................................................................................................................... 221
Turn off your device............................................................................................................................................................................................................................... 221
Set your device to turn on and turn off automatically..................................................................................................................................................................... 221
Reset the device..................................................................................................................................................................................................................................... 221
Check the battery power level............................................................................................................................................................................................................. 221
Extend battery life................................................................................................................................................................................................................................. 221
Format the device memory or a media card...................................................................................................................................................................................... 222
View the amount of available memory............................................................................................................................................................................................... 222
Best practice: Optimizing your device performance........................................................................................................................................................................ 222
SIM card........................................................................................................................................................................................................................................ 225
About the SIM card phone book.......................................................................................................................................................................................................... 225
Add a contact to your SIM card........................................................................................................................................................................................................... 225
Copy contacts from your SIM card to your contact list.................................................................................................................................................................... 225
Copy a contact from your contact list to your SIM card.................................................................................................................................................................. 225
Change a SIM card contact.................................................................................................................................................................................................................. 226
Delete a SIM card contact.................................................................................................................................................................................................................... 226
Store SMS text messages on your SIM card...................................................................................................................................................................................... 226
About SIM card security........................................................................................................................................................................................................................ 226
Protect your SIM card with a PIN code.............................................................................................................................................................................................. 226
Change the SIM card PIN code........................................................................................................................................................................................................... 227
Change the display name for a phone number................................................................................................................................................................................. 227
Security......................................................................................................................................................................................................................................... 229
Security basics........................................................................................................................................................................................................................................ 229
Password keeper.................................................................................................................................................................................................................................... 230
Encryption............................................................................................................................................................................................................................................... 232