OPPO A78 5G
Save voicemail number
You can save your voicemail number making it easy to call and listen to your voice messages.
Press the call icon.
Press the menu icon.
Press Settings.
Press Voicemail.
Press Advanced Settings.
Press Number.
Key in 707 and press the confirm icon.
Press the Home key to return to the home screen.
1. 1. Find "Number"
2. 2. Save voicemail number
3. 3. Return to the home screen