Device Guides
Samsung Galaxy S20 Ultra 5G
Buy now
Search in Samsung Galaxy S20 Ultra 5G
I can't make voice calls
This troubleshooting guide will take you through a number of possible causes to help you find a solution to your problem.
Possible cause 4:
Fixed dialing is turned on: Turn off fixed dialing.
List view
1. Find "Fixed dialling numbers"
Tap the phone icon.
Tap the menu icon.
Tap Settings.
Tap Supplementary services.
Tap Fixed dialling numbers.
2. Turn on fixed dialing
Tap Enable FDN.
Key in your PIN2 and tap OK. The default PIN2 is 0000.
0000
3. Turn off fixed dialing
Tap Disable FDN.
Key in your PIN2 and tap OK. The default PIN2 is 0000.
0000
4. Return to the home screen
Tap the Home key to return to the home screen.
Step 1 of 10
Tap the phone icon.
Step 2 of 10
Tap the menu icon.
Step 3 of 10
Tap Settings.
Step 4 of 10
Tap Supplementary services.
Step 5 of 10
Tap Fixed dialling numbers.
Step 6 of 10
Tap Enable FDN.
0000
Step 7 of 10
Key in your PIN2 and tap OK. The default PIN2 is 0000.
Step 8 of 10
Tap Disable FDN.
0000
Step 9 of 10
Key in your PIN2 and tap OK. The default PIN2 is 0000.
Step 10 of 10
Tap the Home key to return to the home screen.
Would you like information for your {device-name}?