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Protect your SIM card with a PIN code................................................................................................................................................................................................... 249
Change the SIM card PIN code................................................................................................................................................................................................................ 249
Change the display name for a phone number...................................................................................................................................................................................... 249
Security........................................................................................................................................................................................................................................................ 250
Security basics............................................................................................................................................................................................................................................ 250
Password keeper........................................................................................................................................................................................................................................ 252
Encryption................................................................................................................................................................................................................................................... 254
Memory cleaning........................................................................................................................................................................................................................................ 257
Certificates.................................................................................................................................................................................................................................................. 258
PGP keys..................................................................................................................................................................................................................................................... 266
Certificate servers...................................................................................................................................................................................................................................... 272
Key stores.................................................................................................................................................................................................................................................... 274
Smart cards................................................................................................................................................................................................................................................. 277
Software tokens.......................................................................................................................................................................................................................................... 281
VPN settings............................................................................................................................................................................................................................................... 282
About security self-tests............................................................................................................................................................................................................................ 283
Verify security software............................................................................................................................................................................................................................. 283
Third-party application control................................................................................................................................................................................................................ 283
Troubleshooting: Security......................................................................................................................................................................................................................... 287
Service books and diagnostic reports...................................................................................................................................................................................................... 289
Service books.............................................................................................................................................................................................................................................. 289
Diagnostic reports...................................................................................................................................................................................................................................... 290
Accessibility options.................................................................................................................................................................................................................................. 292
About accessibility options....................................................................................................................................................................................................................... 292
Display closed captions in videos............................................................................................................................................................................................................. 292
Change the display font............................................................................................................................................................................................................................ 292
Use reverse contrast for the screen display............................................................................................................................................................................................ 292
Use grayscale for the screen display....................................................................................................................................................................................................... 293
Set the number of icons that appear on the Home screen................................................................................................................................................................... 293
Turn on event sounds................................................................................................................................................................................................................................ 293
Assign ring tones and alerts to a contact................................................................................................................................................................................................ 293
TTY support................................................................................................................................................................................................................................................. 294
Voice dialing............................................................................................................................................................................................................................................... 295
AutoText...................................................................................................................................................................................................................................................... 295
Predictive input method............................................................................................................................................................................................................................ 295
BrickBreaker................................................................................................................................................................................................................................................ 297
About BrickBreaker.................................................................................................................................................................................................................................... 297
BrickBreaker capsules................................................................................................................................................................................................................................ 297