Blackberry 8800 User Guide - Page 36

• If you have traveled to another country and you have not changed your smart-dialing options, dial the full phone number, including the country code and area code, for your contact. • If you are not receiving calls, verify that call blocking and call forwarding are turned off. • If your SIM card supports more than one phone number, but you have only one phone number, verify that the phone number is set as your active phone number. My phone number appears as Unknown in the phone Try changing the phone number on your SIM card to change how your phone number appears in the phone. In the device options, click Advanced Options. Click SIM Card. Highlight the phone number. Press the Menu key. Click Edit SIM Phone Number. Type your phone number. Click the trackball. Note: If you change the phone number on your SIM card, you do not change the phone number that your BlackBerry® device uses to make and receive calls. I cannot check my voice mail If you have more than one phone number associated with your BlackBerry® device and you are trying to check your voice mail using a shortcut key, your device calls the voice mail access number for your active phone number. Try checking the voice mail for your alternate phone number. I cannot join a call If your BlackBerry® device is associated with an enterprise voice phone number, you cannot join a call that you make from or receive to your enterprise voice phone number with a call that you make from or receive to the phone number provided by your wireless service provider. 34