Once you’ve set up your voicemail, you’ll be able to turn off your phone whenever you want. There are, however, alternative means by which you can keep in touch. What is the procedure for resetting voicemail on a Samsung device? Modify the greetingTo access the Apps menu from any Home screen, select it from the drop-down menu.Select Visual Voicemail from the drop-down menu.Select the Greetings tab from the drop-down menu. To switch to an existing greeting, simply tap the greeting you want to use.
iOS 8 has been loaded on to my phone for >1 month now. I try to change my greeting by pressing on the "greeting" button while I am in voicemail, and it will not go the screen to record a new greeting. Why? HOw to fix? Also, A client left me a voicemail and I saw her number, but the message would not play, and showed 0 minutes of message time, so I …

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.
If you’ve already created a custom voicemail on your iPhone, you can tap Play to see how your voicemail sounds. If you’re interested in creating a new message, tap the Custom button. From here, you can start recording your message by tapping Record and tapping Stop whenever you’re finished. Once you’re finished recording, tap on Play to make sure the message comes across as you’d like and hit Save (in the upper right) to save it as your voicemail.