Touch and hold the number 1 on the Keypad tab (lower-left) to activate it. If prompted, enter the voicemail password and then hit the # key to continue. What is the procedure for setting up voicemail on my Samsung? Configuration of Android VoicemailTo access the settings menu, click on the three dots in the upper right corner of the screen.Select “voicemail” from the drop-down menu.Select “Advanced settings” from the drop-down menu.Select “setup” from the drop-down menu.Select “voicemail number” from the drop-down menu.Enter your ten-digit phone number and press the “OK” button.To return to the main menu, press the home key on your keyboard. Is there a voicemail app available for Samsung?
Yea, same issue with me on Att network.. Frozen screen on voicemail settings. I was not even able to call myself to change the voicemail. I had to reset voicemail password over myatt app. And after that I was able to acess my voicemail over the phone. Still I cant change voicemail over the phone. Hope this will help you reset your voicemail.

6. After the message has played, you’ll be given some options for what to do with the message e.g. delete or save it, etc. along with the corresponding number to press.
Play, download, or delete voicemail messages. Sign in to the Zoom app. Tap the Phone tab .; Tap the Voicemail tab. Voicemail messages are displayed in reverse chronological order with most recent messages at the top. You can identify voicemail messages using the following: If the number has a caller ID name or belongs to internal or phone contacts, you'll see a name above the number.