Wireless from AT&T (Wireless Phones, Mobile Email)

Website: AT&T
What is it? A wireless communication company that provides cell phones, smart phones, and mobile email devices and service like Blackberry and Treo.

Overview:
Wireless from AT&T (formerly Cingular) is the largest wireless company in the United States, with more than 54 million subscribers who use the nation's largest digital voice and data network.

According to their website they provide:

1. The country's largest and fastest digital voice and data network—the ALLOVER™ Network—which covers the top 100 U.S. markets and more than 270 million people throughout the U.S.

2. Unlimited calling within the largest mobile-to-mobile calling community—54 million people and growing.

3. Rollover®, AT&T's exclusive offer on our wireless plans that allow customers to keep their unused Anytime Minutes from month to month.

4. An unprecedented selection of handsets and devices to meet every need in the U.S and while traveling.

5. The largest international coverage of any U.S. carrier, giving customers the ability to make calls on 6 continents and 170 countries, with wireless data roaming in over 80 countries for laptops, PDAs, and other data services.

6. Cutting-edge data products and services and access to exclusive content from the top names in media and entertainment.

7. The best pay-as-you-go offering with GoPhone®.

8. A simplified yet comprehensive service summary that spells out exactly what customers are buying and estimated future bills. <

9. Friendly, high-quality service at every AT&T location.

10. A 30-day, no-questions-asked return policy nationwide—longer than that of any other national carrier.

In addition, AT&T serves 95 percent of the Fortune 100 companies and counts more than 80 percent of the Fortune 500 and more than 1,200 federal, state, and local government agencies as customers.