Device Guides

Samsung Galaxy S21+ 5G

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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 2:

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 below the required SIM.

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.
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