Blackberry 8300 SMARTPHONE User Manual page 9

Change the order of preferred wireless networks....................................................................................................................................................................................215
Delete a wireless network from the preferred wireless network list.....................................................................................................................................................215
Turn off data service.....................................................................................................................................................................................................................................215
About roaming...............................................................................................................................................................................................................................................216
Switch wireless networks manually............................................................................................................................................................................................................216
Verify the status of network connections and services...........................................................................................................................................................................216
Wireless network coverage troubleshooting.............................................................................................................................................................................................216
Power, battery, and memory............................................................................................................................................................................................................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............................................................................................................................................................................37
Reset the device............................................................................................................................................................................................................................................219
Extend battery life.........................................................................................................................................................................................................................................219
View the amount of available memory on your device...........................................................................................................................................................................220
Best practice: Optimizing your device performance...............................................................................................................................................................................220
SIM card...............................................................................................................................................................................................................................................221
About the SIM card phone book.................................................................................................................................................................................................................154
Add a contact to your SIM card .................................................................................................................................................................................................................154
Copy contacts from your SIM card to your address book.......................................................................................................................................................................154
Copy a contact from your address book to your SIM card......................................................................................................................................................................154
Change a SIM card contact.........................................................................................................................................................................................................................155
Delete a SIM card contact...........................................................................................................................................................................................................................155
Store SMS text messages on your SIM card...............................................................................................................................................................................................75
About SIM card security...............................................................................................................................................................................................................................222
Protect your SIM card with a PIN code..................................................................................................................................................................................................... 223
Change the SIM card PIN code.................................................................................................................................................................................................................. 223
Change the display name for a phone number........................................................................................................................................................................................223
Security............................................................................................................................................................................................................................................... 225
Security basics..............................................................................................................................................................................................................................................225
Password keeper...........................................................................................................................................................................................................................................226
Encryption......................................................................................................................................................................................................................................................228
Memory cleaning..........................................................................................................................................................................................................................................230
Certificates.....................................................................................................................................................................................................................................................231
Certificate servers.........................................................................................................................................................................................................................................237
Key stores......................................................................................................................................................................................................................................................239
Smart cards....................................................................................................................................................................................................................................................241
Software tokens............................................................................................................................................................................................................................................244
About PGP keys............................................................................................................................................................................................................................................244