Roaming......................................................................................................................................................................................................................................................
Preferred wireless network list.................................................................................................................................................................................................................
Troubleshooting: Wireless network coverage.........................................................................................................................................................................................
Power, battery, and memory.....................................................................................................................................................................................................................
Turn off your device...................................................................................................................................................................................................................................
Reset the device.........................................................................................................................................................................................................................................
Check the battery power level..................................................................................................................................................................................................................
Extend battery life......................................................................................................................................................................................................................................
Format the device memory or a media card...........................................................................................................................................................................................
View the amount of available memory....................................................................................................................................................................................................
The application memory on my device is low.........................................................................................................................................................................................
SIM card......................................................................................................................................................................................................................................................
About the SIM card phone book...............................................................................................................................................................................................................
Add a contact to your SIM card................................................................................................................................................................................................................
Change a SIM card contact......................................................................................................................................................................................................................
Delete a SIM card contact........................................................................................................................................................................................................................
Store SMS text messages on your SIM card...........................................................................................................................................................................................
About SIM card security............................................................................................................................................................................................................................
Protect your SIM card with a PIN code...................................................................................................................................................................................................
Change the SIM card PIN code................................................................................................................................................................................................................
Change the display name for a phone number......................................................................................................................................................................................
Security........................................................................................................................................................................................................................................................
Security basics............................................................................................................................................................................................................................................
Password keeper........................................................................................................................................................................................................................................
Encryption...................................................................................................................................................................................................................................................
Memory cleaning........................................................................................................................................................................................................................................
Certificates..................................................................................................................................................................................................................................................
PGP keys.....................................................................................................................................................................................................................................................
Certificate servers......................................................................................................................................................................................................................................
Key stores....................................................................................................................................................................................................................................................
230
231
231
231
232
232
234
235
237
237
237
237
237
237
238
238
238
239
240
240
240
240
240
241
241
241
242
242
242
242
243
243
245
247
250
251
259
265
267