Blackberry 8520 manual 223

Network connection indicators	211
Turn on wireless coverage notification	212
About the preferred wireless network list	212
Add a wireless network to the preferred wireless network list	212
Change the order of preferred wireless networks	213
Delete a wireless network from the preferred wireless network list	213
Turn off data service	214
About roaming	214
Switch wireless networks manually	214
Verify the status of network connections and services	215
Wi-Fi connection settings	215
Advanced Wi-Fi connection settings	218
UMA connection settings	221
Wireless network coverage troubleshooting	221
Power, battery, and memory	223
Turn off your device	223
Set your device to turn on and turn off automatically	223
Reset the device	223
Check the battery power level	223
Extend battery life	223
Format the device memory or a media card	224
View the amount of available memory	224
Best practice: Optimizing your device performance	224
SIM card	226
About the SIM card phone book	226
Add a contact to your SIM card	226
Copy contacts from your SIM card to your contact list	226
Copy a contact from your contact list to your SIM card	226
Change a SIM card contact	227
Delete a SIM card contact	227
Store SMS text messages on your SIM card	227
About SIM card security	228
Protect your SIM card with a PIN code	228
Change the SIM card PIN code	228
Change the display name for a phone number	228
Security	229
Security basics	229
Password keeper	230
Encryption	233