Blackberry 8900 - Curve - GSM, Getting Started Manual

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I cannot make or receive calls
Try performing the following actions:
• Verify that your BlackBerry® device is connected to the wireless network.
• If you cannot make calls and fixed dialing is turned on, verify that the phone
number for your contact appears in your fixed dialing list or turn off fixed dialing.
• 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.
• Your SIM card might support more than one phone number, even if you only have
one phone number. Verify that your phone number is set as your active phone
number.
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