Samsung B2710
Turn fixed dialling on or off
When fixed dialling is turned on, you can only call selected numbers and do emergency calls. Incoming calls aren't affected.
1. Find "Fixed dialling mode"
Press the Navigation key.
Scroll to Settings and press the Navigation key.
Scroll to Security and press the Navigation key.
Scroll to Fixed dialling mode and press the Navigation key.
2. Turn fixed dialling on or off
Key in your PIN2 and press the Navigation key to select On or Off.
3. Return to the home screen
Press Disconnect to return to the home screen.