Voicemails don’t necessarily have to be monotonous or extremely jazzy or funky. What you should be looking for is a balance between the two. Whenever you call someone and their voicemail greeting is playing, it tells you a lot about who they are, as a person. Which is why, you’ve got to put a little bit of “you” when it comes to voicemail. And the best part about all of this is, since you couldn’t come to the phone, at least the callers are having a good time listening to the message.
3. Setting Up an AT&T Visual Voicemail: Open your iPhone's Phone app. It's the white phone icon on a green background on the Home screen. Tap "Voicemail". It's in the bottom right corner of the screen.

After that, relaunch the app. This may fix the issue of voicemail not working on your device.
Here is the way for, how to set up Voicemail on iPhone. Voicemail, Voice message, and voicebank all is the same thing. Using Apple iPhone, you can record your audio speech (message) and then send it to the recipient. Voicemail is depended on your country-wise carries such as in USA carrier – Verizon, at&t, sprint, and more. In this era, almost folks shout that without voicemail has felt like irksome. Since, here I publish my solved tip, for those users, who have Voicemail setup/ activate issue on his or her iPhone. This is the quick easy tip to Set up Voicemail on iPhone Verizon.