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BlackBerry Device Software...................................................................................................................................................................................................................... 234
About updating the BlackBerry Device Software................................................................................................................................................................................... 234
Update the BlackBerry Device Software over the wireless network.................................................................................................................................................... 234
Return to the previous version of the BlackBerry Device Software..................................................................................................................................................... 235
Delete the previous version of the BlackBerry Device Software.......................................................................................................................................................... 235
Check for BlackBerry Device Software updates that you can install over the wireless network...................................................................................................... 235
About updating the BlackBerry Device Software from a web site....................................................................................................................................................... 235
Update the BlackBerry Device Software from a web site..................................................................................................................................................................... 236
Troubleshooting: BlackBerry Device Software....................................................................................................................................................................................... 236
Wireless network coverage....................................................................................................................................................................................................................... 238
Turn on the connection to the wireless network.................................................................................................................................................................................... 238
Turn off the connection to the wireless network.................................................................................................................................................................................... 238
Turn on or turn off data service or set roaming options........................................................................................................................................................................ 238
Wireless networks that your device connects to.................................................................................................................................................................................... 239
Turn on LED notification for wireless coverage...................................................................................................................................................................................... 239
Check the status of network connections and services......................................................................................................................................................................... 239
Roaming...................................................................................................................................................................................................................................................... 239
Preferred wireless network list................................................................................................................................................................................................................. 241
Troubleshooting: Wireless network coverage......................................................................................................................................................................................... 243
Power, battery, and memory..................................................................................................................................................................................................................... 244
Turn off your device................................................................................................................................................................................................................................... 244
Set your device to turn on and turn off automatically........................................................................................................................................................................... 244
Reset the device......................................................................................................................................................................................................................................... 244
Check the battery power level.................................................................................................................................................................................................................. 244
Extend battery life...................................................................................................................................................................................................................................... 244
Format the device memory or a media card........................................................................................................................................................................................... 245
View the amount of available memory.................................................................................................................................................................................................... 245
Best practice: Conserving memory on your device................................................................................................................................................................................ 245
The application memory on my device is low......................................................................................................................................................................................... 246
SIM card...................................................................................................................................................................................................................................................... 247
About the SIM card phone book............................................................................................................................................................................................................... 247
Add a contact to your SIM card................................................................................................................................................................................................................ 247
Copy contacts from your SIM card to your contact list......................................................................................................................................................................... 247
Copy a contact from your contact list to your SIM card........................................................................................................................................................................ 247
Change a SIM card contact...................................................................................................................................................................................................................... 248
Delete a SIM card contact........................................................................................................................................................................................................................ 248
Store SMS text messages on your SIM card........................................................................................................................................................................................... 248
About SIM card security............................................................................................................................................................................................................................ 249