T vs TEF

AT&T Inc.

AT&T Inc. provides telecommunication, media, and technology services worldwide. The company operates through Communications, WarnerMedia, and Latin America segments. The Communications segment offers wireless voice and data communications services; video and targeted advertising services; broadband, including fiber, and legacy telephony internet and voice communication; and wireline telecom services. It also sells handsets, wirelessly enabled computers, wireless data cards, and IP-based set-top boxes, as well as various accessories, such as carrying cases and hands-free devices through the company-owned stores, agents, and third-party retail stores. This segment markets its communications services and products under the AT&T, Cricket, AT&T PREPAIDSM, AT&T TV, AT&T Fiber, and DIRECTV brand names. The WarnerMedia segment primarily produces, distributes, and licenses television programming and feature films; distributes home entertainment products in physical and digital formats; and produces and distributes mobile and console games, and consumer products, as well as offers brand licensing services, and advertising services. It also operates cable networks; video on demand streaming platform under the HBO Max and HBO GO names; multichannel pay television services under the HBO and Cinemax; and digital media properties, as well as licenses its content to television networks and over-the-top services. The Latin America segment offers video entertainment and audio programming services under the DIRECTV and SKY brands primarily to residential customers; pay-TV services, including HD sports video content; and postpaid and prepaid wireless services under the AT&T and Unefon brands, as well as sells various handsets through company-owned stores, agents, and third-party retail stores. The company was formerly known as SBC Communications Inc. and changed its name to AT&T Inc. in November 2005. AT&T Inc. was incorporated in 1983 and is headquartered in Dallas, Texas.

Telefonica SA

Telefónica, S.A., together with its subsidiaries, provides telecommunications services in Europe and Latin America. The company's mobile and related services and products comprise mobile voice, value added, mobile data, Internet, wholesale, corporate, roaming, fixed wireless, trunking, and paging services. Its fixed telecommunication services include PSTN lines; ISDN accesses; public telephone services; local, domestic, and international long-distance and fixed-to-mobile communications; corporate communications; supplementary value-added services; video telephony; intelligent network; and telephony information services. The company also leases and sells handset equipment; and provides Internet and broadband multimedia services comprising Internet service provider, portal and network, retail and wholesale broadband access, narrowband switched access, high-speed Internet through fibre to the home, and voice over Internet protocol services. In addition, it offers leased lines; virtual private network; fibre optics; hosting and application; outsourcing and consultancy; desktop; and system integration and professional services. Further, the company offers wholesale services for telecommunication operators, including domestic interconnection; international wholesale; leased lines for other operators; and local loop leasing under the unbundled local loop regulation framework, as well as bit stream services, wholesale line rental accesses, and leased ducts for other operators' fiber deployment. Additionally, it provides video/TV services; smart connectivity and services, and consumer IoT products; financial and other payment, security, cloud computing, advertising, big data, and digital telco experience services; virtual assistants; digital home platforms; and Movistar Home devices. The company serves 337 million customers. Telefónica, S.A. was founded in 1924 and is headquartered in Madrid, Spain.