Reset the device......................................................................................................................................................................................................................................... 254
Check the battery power level.................................................................................................................................................................................................................. 254
Extend battery life...................................................................................................................................................................................................................................... 254
Format the device memory or a media card........................................................................................................................................................................................... 255
View the amount of available memory.................................................................................................................................................................................................... 255
Best practice: Conserving memory on your device................................................................................................................................................................................ 255
The application memory on my device is low......................................................................................................................................................................................... 256
SIM card...................................................................................................................................................................................................................................................... 257
About the SIM card phone book............................................................................................................................................................................................................... 257
Add a contact to your SIM card................................................................................................................................................................................................................ 257
Copy contacts from your SIM card to your contact list......................................................................................................................................................................... 257
Copy a contact from your contact list to your SIM card........................................................................................................................................................................ 257
Change a SIM card contact...................................................................................................................................................................................................................... 258
Delete a SIM card contact........................................................................................................................................................................................................................ 258
Store SMS text messages on your SIM card........................................................................................................................................................................................... 258
About SIM card security............................................................................................................................................................................................................................ 259
Protect your SIM card with a PIN code................................................................................................................................................................................................... 259
Change the SIM card PIN code................................................................................................................................................................................................................ 259
Change the display name for a phone number...................................................................................................................................................................................... 259
Security........................................................................................................................................................................................................................................................ 260
Security basics............................................................................................................................................................................................................................................ 260
Password keeper........................................................................................................................................................................................................................................ 262
Encryption................................................................................................................................................................................................................................................... 264
Memory cleaning........................................................................................................................................................................................................................................ 267
Certificates.................................................................................................................................................................................................................................................. 268
PGP keys..................................................................................................................................................................................................................................................... 276
Certificate servers...................................................................................................................................................................................................................................... 282
Key stores.................................................................................................................................................................................................................................................... 284
Smart cards................................................................................................................................................................................................................................................. 287
Software tokens.......................................................................................................................................................................................................................................... 291
VPN settings............................................................................................................................................................................................................................................... 292
About security self-tests............................................................................................................................................................................................................................ 293
Verify security software............................................................................................................................................................................................................................. 293
Third-party application control................................................................................................................................................................................................................ 293
Troubleshooting.......................................................................................................................................................................................................................................... 297
Service books and diagnostic reports...................................................................................................................................................................................................... 299
Service books.............................................................................................................................................................................................................................................. 299
Diagnostic reports...................................................................................................................................................................................................................................... 300
Wi-Fi diagnostic reports............................................................................................................................................................................................................................ 301