AT & T stands for American Telephone & Telegraph. It is one of the largest telecommunication companies in the world. AT & T provides voice, Video, Data, and Internet telecommunication services and expert offerings to agencies, consumers, and government companies. Voice messages can quit working for various reasons, however, there are a few arrangements accessible to you. So on the off chance that your voice message isn't dealing with your iPhone. More info visit : https://resolvescience.com/fix-at-t-voicemail-not-working-issues-on-iphone/