This is a top telecom and entertainment play. AT&T Inc. ( NYSE: T ) is the largest U.S. telecom company and provides wireless and wireline service to retail, enterprise and wholesale customers. The company's wireless network serves approximately 124 million mobile connections, with 77 million postpaid subscribers. While AT&T's traditional wireline voice business has undergone a period of secular decline due to wireless substitution and cable competition, the company through WarnerMedia has become a diversified media and entertainment business.