AT&T

AT&T is an American multinational telecommunications holding company based in Dallas. It operates as a major telecommunications platform, primarily generating revenue through its wireless business, which accounts for nearly 70% of its total income. As the third-largest wireless carrier in the United States, AT&T connects approximately 72 million postpaid and 17 million prepaid mobile customers. The company also provides fixed-line enterprise services, contributing about 16% of revenue, which includes internet access, private networking, security, voice services, and wholesale network capacity. Additionally, AT&T offers residential fixed-line services, primarily broadband internet access, to around 14 million customers, making up about 11% of its revenue. The company has a significant presence in Mexico, serving 23 million customers, though this segment represents only 4% of its overall revenue.