Turn off a wireless connection.............................................................................................................................................................................................................
Network connection indicators...........................................................................................................................................................................................................
Turn on wireless coverage notification...............................................................................................................................................................................................
Turn off data service..............................................................................................................................................................................................................................
About roaming........................................................................................................................................................................................................................................
Wi-Fi connection settings.....................................................................................................................................................................................................................
Advanced Wi-Fi connection settings..................................................................................................................................................................................................
Wireless network coverage troubleshooting.....................................................................................................................................................................................
Power, battery, and memory.....................................................................................................................................................................................................
Turn off your device...............................................................................................................................................................................................................................
Reset the device.....................................................................................................................................................................................................................................
Check the battery power level.............................................................................................................................................................................................................
Extend battery life.................................................................................................................................................................................................................................
Format a media card..............................................................................................................................................................................................................................
View the amount of available memory...............................................................................................................................................................................................
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....................................................................................................................................................................................................................
Security.........................................................................................................................................................................................................................................
Security basics........................................................................................................................................................................................................................................
Password keeper....................................................................................................................................................................................................................................
Encryption...............................................................................................................................................................................................................................................
Memory cleaning...................................................................................................................................................................................................................................
Certificates..............................................................................................................................................................................................................................................
PGP keys.................................................................................................................................................................................................................................................
Certificate servers..................................................................................................................................................................................................................................
Key stores................................................................................................................................................................................................................................................
Smart cards.............................................................................................................................................................................................................................................
Software tokens.....................................................................................................................................................................................................................................
VPN settings...........................................................................................................................................................................................................................................
About security self-tests.......................................................................................................................................................................................................................
Verify security software........................................................................................................................................................................................................................
Third-party application control...........................................................................................................................................................................................................
213
213
214
214
215
215
215
218
220
223
223
223
223
223
223
224
224
224
227
227
227
227
227
228
229
229
230
232
234
236
241
246
248
250
253
254
255
255
255