1. Find "Voice"
Slide two fingers downwards starting from the top the screen.
Press the settings icon.
Press Call.
Press Call forwarding.
Press Voice.
2. Divert calls to voicemail
Press the required divert type.
Key in (prefix) 5 (your phone number) and press TURN ON.
(prefix) 5 (your phone number)
3. Return to the home screen
Press the Home key to return to the home screen.