OPPO A57 4G

OPPO A57 4G

Android 12.0

I can't make voice calls on my OPPO A57 4G Android 12.0

Cause 12 of 12: Fixed dialling is turned on

When you turn on fixed dialling, you can only call predefined numbers and do emergency calls.

Solution: Turn off fixed dialling.

Step 1 of 12

Find "Fixed dialling numbers"

Press the phone icon.

Step 2 of 12

Find "Fixed dialling numbers"

Press the menu icon.

Step 3 of 12

Find "Fixed dialling numbers"

Press Settings.

Step 4 of 12

Find "Fixed dialling numbers"

Press Calling accounts.

Step 5 of 12

Find "Fixed dialling numbers"

Press Advanced settings.

Step 6 of 12

Find "Fixed dialling numbers"

Press Fixed dialling numbers.

Step 7 of 12

Turn on fixed dialling

Press the required SIM.

Step 8 of 12

Turn on fixed dialling

Press Enable FDN to turn on fixed dialling.

1111

1111

1111

Step 9 of 12

Turn on fixed dialling

Key in the PIN2 and press the confirm icon. The default PIN2 is 1111.

Step 10 of 12

Turn off fixed dialling

Press Disable FDN to turn off fixed dialling.

1111

1111

1111

Step 11 of 12

Turn off fixed dialling

Key in the PIN2 and press the confirm icon. The default PIN2 is 1111.

Step 12 of 12

Return to the home screen

Press the Home key to return to the home screen.

1 Find "Fixed dialling numbers"

Press the phone icon.

Press the menu icon.

Press Settings.

Press Calling accounts.

Press Advanced settings.

Press Fixed dialling numbers.

2 Turn on fixed dialling

Press the required SIM.

Press Enable FDN to turn on fixed dialling.

Key in the PIN2 and press the confirm icon. The default PIN2 is 1111.

1111

3 Turn off fixed dialling

Press Disable FDN to turn off fixed dialling.

Key in the PIN2 and press the confirm icon. The default PIN2 is 1111.

1111

4 Return to the home screen

Press the Home key to return to the home screen.