SK Telecom Co., Ltd. engages in the provision of telecommunication and internet services. It operates through the following business divisions: Wireless Communication, Wired Communication, and Other. The Wireless Communication division deals with mobile phone, wireless data, information, and communication business. The Wired Communication division provides phone, high-speed Internet, data, and communication network rental services. The Other division includes product sales-type data broadcasting channel use business. The company was founded on March 29, 1984 and is headquartered in Seoul, South Korea.