Samsung Galaxy S21 Ultra 5G
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.
Press the phone icon.
Press the menu icon.
Press Settings.
Press Supplementary services.
Press Fixed dialling numbers below the required SIM.
Press Enable FDN.
Key in your PIN2 and press OK.
Press Disable FDN.
Key in your PIN2 and press OK.
Press the Home key to return to the home screen.
1. 1. Find "Fixed dialling numbers"
2. 2. Turn on fixed dialling
3. 3. Turn off fixed dialling
4. 4. Return to the home screen