SKM vs T

SK Telecom Co. Ltd.

SK Telecom Co., Ltd. provides wireless telecommunication services in South Korea and internationally. The Cellular Services segment offers wireless voice and data transmission, cellular global roaming, interconnection, Internet of Things, and platform services, as well as sells smartphones, basic phones, tablets and other Internet access devices, and wearable devices. The Fixed-Line Telecommunication Services segment provides local, domestic and international long distance, and voice over Internet protocol services; broadband Internet access; Internet protocol TV and mobile over-the-top; and leased line solutions, Internet data center, and network solution services. The Commerce Services segment operates 11st, an online open marketplace; and T-commerce network that offer assortment of goods and services through pre-recorded television programming. The Other Businesses segment provides marketing platform services, such as Syrup Wallet, a mobile wallet service; OK Cashbag, a loyalty points program; and One Store, a mobile application marketplace. The Security Services segment offers physical security services, which includes centralized monitoring system; information security solutions, such as information security consulting, managed security, and cyber threat intelligence solutions; and operates parking management and security solutions business. In addition, it offers call center management, base station maintenance, information gathering and consulting, system software development and supply, quantum information and communications, data base and internet website, and digital contents sourcing services; manufactures and sells e-book; sells and trades in anti-theft and surveillance devices; and operates information and communications facilities. As of December 31, 2020, the company had 3.8 million fixed-line telephone and 31.4 million wireless subscribers. The company was incorporated in 1984 and is headquartered in Seoul, South Korea.

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.