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AT&T has certainly come a long way from its early days as a telegraph company. You can thank this telecommunications giant if you are hooked on U-verse TV, use your smartphone to surf the web on the 4G LTE network, or use its U-verse high-speed Internet to browse your favorite coupon website. With more than 3.5 million business customers, AT&T serves nearly all the Fortune 1000 companies and neighborhood mom and pop stores alike. If only Alexander Graham Bell could see how far his telephone invention has come!