1. Find "Call forwarding settings"
Press the phone icon.
Press the menu icon.
Press Call forwarding settings.
2. Divert calls to voicemail
Press the required SIM.
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.