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Network connection indicators.................................................................................................................................................................................................................209
Turn on wireless coverage notification.....................................................................................................................................................................................................147
Change the connection speed for the wireless network........................................................................................................................................................................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.....................................................................................................................................................................................................................................212
About roaming..............................................................................................................................................................................................................................................212
Switch wireless networks manually...........................................................................................................................................................................................................212
Verify the status of network connections and services..........................................................................................................................................................................212
Wi-Fi connection settings...........................................................................................................................................................................................................................213
Advanced Wi-Fi connection settings.........................................................................................................................................................................................................216
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 ............................................................................................................................................................................................99
View the amount of available memory.....................................................................................................................................................................................................100
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...............................................................................................................................................................................................51
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