Blackberry 8820 User Guide - Page 267

I am not receiving notification for incoming calls or messages Try performing the following actions: • In the profile list, verify that the Off profile is turned off. • In a notification profile exception, verify that the Custom Phone Tune field is not set to Mute. I cannot set some fields when creating a Calls From notification profile exception If you assign a custom ring tone to a contact in the address book, a Calls From profile exception appears in the profile list. Because these exceptions are for calls only, you can only set the Custom Phone Tune field. Display troubleshooting My device screen turns off When you do not use your BlackBerry® device for a period of time, the screen turns off to conserve battery power. To turn on the screen, click the trackball or press a key. My display changed Depending on your theme, display options, such as your font and Home screen background, might change when you switch themes. Language troubleshooting Some characters do not appear correctly on my device The BlackBerry® Enterprise Server or BlackBerry Internet Service that is associated with your BlackBerry device might not support the characters. For more information, contact your system administrator or your wireless service provider. Wireless network coverage troubleshooting I cannot connect to a wireless network Try performing the following actions: • Verify that your SIM card is inserted in your BlackBerry® device correctly. • Verify that you have turned on the connection to the wireless network. • Verify that you are connected to your wireless service provider's network. If you switched wireless networks manually, your device remains connected to that wireless network until you select your wireless service provider's network again. • If your wireless service provider supports UMA, verify that your connection preference is not set to UMA-only. 265