Alcatel 1S (2021)
Android 11.0
1 Find "Call forwarding"
Press the phone icon.
Press the menu icon.
Press Settings.
Press Call settings.
Press Call forwarding.
2 Divert calls to voicemail
Press the required divert type.
Key in +447836121121 and press ENABLE.
+447836121121
3 Return to the home screen
Press the Home key to return to the home screen.