1. Find "Number"
Press the phone icon.
Press the menu icon.
Press Settings.
Press Voicemail.
Press the required SIM.
Press Advanced Settings.
Press Number.
2. Save voicemail number
Key in (prefix) 5 (your phone number) and press the save icon.
(prefix) 5 (your phone number)
3. Return to the home screen
Press the Home key to return to the home screen.