How do I turn off voicemail on my iphone?

1. First unlock the iPhone XR, and click "Settings" on the Apple phone in ios 13.6.

2. Then find "Mobile Phone" on the settings page, as shown in the figure below.

3. Then click "Call Forwarding" on the phone page that opens, as shown in the figure below.

4. Then in the page that opens, turn off call forwarding, as shown in the figure below.

5. Then go back to the phone desktop and open "SMS".

6. On the SMS page, click the "New" icon in the upper right corner.

7. Finally, edit the short message content GHZ and send it to the number 10658 1 12. Wait a few seconds, and the message of successful shutdown will appear.