Sony Xperia 10 II
Android 10.0
1 Find "Fixed dialling numbers"
Press the phone icon.
Press the menu icon.
Press Settings.
Press Calling accounts.
Press the name of the SIM.
Press Fixed dialling numbers.
2 Turn on fixed dialling
Press Activate fixed dialling to turn on fixed dialling.
Key in your PIN2 and press OK. The default PIN2 is 1111.
1111
3 Turn off fixed dialling
Press Deactivate fixed dialling to turn off fixed dialling.
Key in your PIN2 and press OK. The default PIN2 is 1111.
1111
4 Return to the home screen
Press the Home key to return to the home screen.