AT&T is one of the largest mobile network solutions provider in the United States and boasts of more than 143 million subscribers. It is popular across the different states. Buying the AT&T United states traffic packages enables an advertiser to reach out to these 143 million subscribers and promote their business to them. The ad server only serves the ad to the people who are using the AT&T mobile network. Since mobile ads are more popular and efficient nowadays, using this traffic package gets you more traffic which in turn helps you to get more business. Know more about the AT&T United States traffic here.