AT&T Inc. is a leading provider of telecommunications and technology services worldwide. The company delivers wireless voice and data services wireline broadband and voice services and video entertainment offerings through its subsidiaries. It operates a large network infrastructure that includes fiber optic cables wireless spectrum and satellite assets. AT&T Inc. serves consumers businesses and government entities across the United States and in select international markets. The firm also provides wholesale connectivity to other carriers and supports public safety communications through its FirstNet network.

The company generates revenue primarily from monthly service charges for wireless plans wireline broadband connections and legacy voice services. Equipment sales of handsets routers and other devices add to income. Service revenue from mobility business wireline and consumer wireline units accounts for the majority of total sales while equipment revenue contributes a smaller share. The Latin America segment adds wireless service fees and device sales in Mexico. In addition the company earns revenue from licensing its intellectual property and from providing managed professional services to enterprise clients.

The company operates through the following segments: Communications and Latin America.

• The Communications segment provides wireless and wireline telecom and broadband services to consumers in the United States and to business customers worldwide. It includes the Mobility unit offering nationwide postpaid prepaid and reseller wireless service and device sales. The Business Wireline unit delivers fiber based Ethernet IP voice managed professional services and legacy copper services to enterprises. The Consumer Wireline unit supplies fiber broadband fixed wireless access and traditional voice services to residential customers.

• The Latin America segment provides wireless voice and data services in Mexico. It serves approximately 24.7 million subscribers under the AT&T and Unefon brands offering postpaid and prepaid plans. The segment sells handsets accessories and other devices through company owned stores agents and third party retailers. Revenue comes from both service subscriptions and equipment sales in the region.

AT&T Inc. holds a strong position in the U. S. telecommunications market ranking among the top three wireless carriers alongside Verizon Communications and T Mobile US. In the wireline broadband arena it competes with large cable operators such as Comcast Charter Communications and Spectrum. The company benefits from a nationwide fiber footprint extensive spectrum holdings and a powerful brand portfolio that includes AT&T Business Cricket and AT&T PREPAID. Its scale allows it to achieve cost efficiencies in network operations and to invest heavily in next generation technologies such as 5G and fiber to the home. In Mexico its wireless operations face competition primarily from América Móvil but the company leverages its network quality and customer service to maintain market share. Overall AT&T Inc. is recognized for its reliable network coverage innovative service bundles and strong customer relationships.

The company serves a diverse customer base that includes individual consumers seeking mobile and internet connectivity small and medium sized businesses looking for reliable voice and data solutions large enterprises needing managed network and cloud services and government agencies requiring secure communications. Wholesale customers such as other telecom carriers and internet service providers also purchase capacity from AT&T Inc.'s network. No single customer accounted for ten percent or more of consolidated revenues in recent years.