AT&T stands for American Telephone & Telegraph. It is the largest provider of telephone services in the United States of America. AT&T also offers wireless cell phone services throughout the United States.
AT&T Wireless, a cell phone service, was rated near dead last by thousands of cell phone owners thru Consumer REports. Bad customer service was among the worst in the nation, and, they do not tell you there are no towers in your area, if there arn't, so no reception!! I worked for them, as a customer service representative, for 1 year, before I had to quit and stay home to care for my ailing wife, I am 71 yrs old now, and that was 9 years ago. I was number 9 rated out of 325 representatives! Go with Verizon, or another, if getting a cell phone.