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When fixed dialling is turned on, you can only call selected numbers and do emergency calls. Incoming calls aren't affected.
1. Find "Fixed dial number"
Press the Navigation key.
Select Fixed dial number.
2. Turn fixed dialling on or off
Highlight the field next to "Fixed Dialling mode" to turn the function on or off.
Key in your PIN2 and press the Left selection key. The default PIN2 is 1111.
3. Return to the home screen
Press Disconnect to return to the home screen.