OPPO A17
Diverting calls to voicemail
To receive voice messages, you need to divert your calls to your voicemail. Before you can divert calls to your voicemail, you need to save the voicemail number.
Press the call icon.
Press the menu icon.
Press Settings.
Press Calling accounts.
Press Advanced settings.
Press Call forwarding.
Press the required divert type.
Key in +447953222222 and press the confirm icon.
Press the Home key to return to the home screen.