Wireless network coverage ............................................................................................................................................................................................................ 215
Find information about wireless coverage indicators ............................................................................................................................................................................ 215
Turn off a wireless connection ................................................................................................................................................................................................................. 215
Network connection indicators ................................................................................................................................................................................................................. 215
Turn on wireless coverage notification ................................................................................................................................................................................................... 196
Check the wireless coverage level using a voice command ................................................................................................................................................................... 39
About the preferred wireless network list ............................................................................................................................................................................................... 216
Add a wireless network to the preferred wireless network list ............................................................................................................................................................ 216
Change the order of preferred wireless networks .................................................................................................................................................................................. 216
Delete a wireless network from the preferred wireless network list ................................................................................................................................................... 217
Turn off data service .................................................................................................................................................................................................................................... 217
About roaming ............................................................................................................................................................................................................................................. 218
Switch wireless networks manually .......................................................................................................................................................................................................... 218
Verify the status of network connections and services ......................................................................................................................................................................... 218
Wireless network coverage troubleshooting ........................................................................................................................................................................................... 218
Power and battery ............................................................................................................................................................................................................................ 219
Turn off your device .................................................................................................................................................................................................................................... 219
Set your device to turn on and turn off automatically .......................................................................................................................................................................... 219
Check the battery power level .................................................................................................................................................................................................................. 219
Check the battery power level using a voice command ......................................................................................................................................................................... 40
Reset the device .......................................................................................................................................................................................................................................... 219
Extend battery life ....................................................................................................................................................................................................................................... 219
SIM card ............................................................................................................................................................................................................................................. 221
About the SIM card phone book ................................................................................................................................................................................................................ 161
Load the SIM card phone book .................................................................................................................................................................................................................. 161
Add a contact to your SIM card ................................................................................................................................................................................................................ 161
Copy contacts from your SIM card to your address book ...................................................................................................................................................................... 161
Change a SIM card contact ....................................................................................................................................................................................................................... 162
Delete a SIM card contact ......................................................................................................................................................................................................................... 162
Store SMS text messages on your SIM card .............................................................................................................................................................................................. 72
About SIM card security ............................................................................................................................................................................................................................. 222
Protect your SIM card with a PIN code ................................................................................................................................................................................................... 223
Change the SIM card PIN code ................................................................................................................................................................................................................ 223
Security ............................................................................................................................................................................................................................................. 225
Security basics ............................................................................................................................................................................................................................................ 225
Encryption .................................................................................................................................................................................................................................................... 226
Password keeper ......................................................................................................................................................................................................................................... 227
Advanced security ...................................................................................................................................................................................................................................... 230
Smart cards ................................................................................................................................................................................................................................................... 231
