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Extend battery life...................................................................................................................................................................................................................................... 250
Format the device memory or a media card........................................................................................................................................................................................... 251
View the amount of available memory.................................................................................................................................................................................................... 251
Best practice: Conserving memory on your device................................................................................................................................................................................ 251
The application memory on my device is low......................................................................................................................................................................................... 252
SIM card...................................................................................................................................................................................................................................................... 253
About the SIM card phone book............................................................................................................................................................................................................... 253
Add a contact to your SIM card................................................................................................................................................................................................................ 253
Copy contacts from your SIM card to your contact list......................................................................................................................................................................... 253
Copy a contact from your contact list to your SIM card........................................................................................................................................................................ 253
Change a SIM card contact...................................................................................................................................................................................................................... 254
Delete a SIM card contact........................................................................................................................................................................................................................ 254
Store SMS text messages on your SIM card........................................................................................................................................................................................... 254
About SIM card security............................................................................................................................................................................................................................ 255
Protect your SIM card with a PIN code................................................................................................................................................................................................... 255
Change the SIM card PIN code................................................................................................................................................................................................................ 255
Change the display name for a phone number...................................................................................................................................................................................... 255
Security........................................................................................................................................................................................................................................................ 256
Security basics............................................................................................................................................................................................................................................ 256
Password keeper........................................................................................................................................................................................................................................ 258
Encryption................................................................................................................................................................................................................................................... 260
Memory cleaning........................................................................................................................................................................................................................................ 263
Certificates.................................................................................................................................................................................................................................................. 264
PGP keys..................................................................................................................................................................................................................................................... 272
Certificate servers...................................................................................................................................................................................................................................... 278
Key stores.................................................................................................................................................................................................................................................... 280
Smart cards................................................................................................................................................................................................................................................. 283
Software tokens.......................................................................................................................................................................................................................................... 287
VPN settings............................................................................................................................................................................................................................................... 288
About security self-tests............................................................................................................................................................................................................................ 289
Verify security software............................................................................................................................................................................................................................. 289
Third-party application control................................................................................................................................................................................................................ 289
Troubleshooting: Security......................................................................................................................................................................................................................... 293
Service books and diagnostic reports...................................................................................................................................................................................................... 295
Service books.............................................................................................................................................................................................................................................. 295
Diagnostic reports...................................................................................................................................................................................................................................... 296
Wi-Fi diagnostic reports............................................................................................................................................................................................................................ 298
Accessibility options.................................................................................................................................................................................................................................. 300