Overview: AT&T serve customers nationwide with a broad range of wireless voice and data services. AT&T have the nation's fastest mobile broadband network and serve 95.5 million wireless subscribers. AT&T has the best worldwide coverage of any U.S. carrier with voice coverage in more than 220 countries, data roaming in more than 200 countries and mobile broadband in more than 130 countries.

The nation's fastest mobile broadband network - and it's getting faster with 4G - serving millions of customers and enabling them to travel and communicate seamlessly with the best worldwide wireless coverage — offering the most phones that work in the most countries. Offering voice coverage in more than 220 countries, data roaming in more than 200 countries and mobile broadband in more than 130 countries.