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SK Telecom Co., Ltd. (Hangul: SK텔레콤 or 에스케이텔레콤) is a South Korean wireless telecommunications operator, it is part of the SK Group, one of the country's largest chaebols. SK Telecom is South Korea's largest wireless carrier, it leads the local market with 50.5 percent share as of 2008. Since its creation in 1984, the company has evolved from a first generation analog cellular system, to second generation CDMA, then to the world's first third-generation synchronized IMT-2000 cellular system. SK Telecom also became the world’s first carrier to commercialize HSDPA in May 2006. SK expanded into the landline market by acquiring second-rated fixed-line operator Hanaro Telecom in February 2008. The company’s online brands include “Nate,” a web portal; “June,” a mobile multimedia service; “Moneta,” an e-banking mobile app; “Nate Drive,” a telematics service and “Digital Home,” an online interface to remote-control household appliances.〔(【引用サイトリンク】title=Brand History )〕 Online services are offered through tech subsidiary SK Communications, which also dominates the social networks market in South Korea. “Cyworld” is the largest social media site by membership and “NateOn” is the number one instant messaging client.〔(【引用サイトリンク】url=http://www.ica-it.org/index.php?option=com_docman&task=doc_download&gid=257&Itemid=56 )〕 In 2004, SK Telecom launched “Hanbyul,” the world’s first DMB satellite. TU Media, SK Telecom's digital media arm, handles DMB TV broadcasts. == History == SK Telecom was established in March 1984 under the name ''Korea Mobile Telecommunications Services Corp.'' (''KMTSC; ''), but was renamed ''Korea Mobile Telecommunications Corp.'' (''KMTC; '') in May 1988. It was a subsidiary of the state monopoly phone company, Korea Telecom (now known as KT Corp.) until KT sold it off in 1993. In June 1994 SK Group (Formerly Sunkyong Group) became Korea Mobile Telecommunications Corporation's largest shareholder. KMTC officially joined the SK Group in January 1997 and changed its name to ''SK Telecom'' in March of that year. In October 2000, SK Telecom became the second operator in the world after NTT DoCoMo to launch a commercial 3G service using W-CDMA technology. In January 2002, this was followed up by launching the world's first CDMA2000 1xEV-DO network, offering greatly increased data transmission speeds to preexisting 2G networks. In May 2005, SK Telecom divested 60 percent of SK Teletech stock to cellphone maker Pantech. SK remains the second largest shareholder by holding on to the rest of Teletech's stock. In 2006, the well-known "SKY" brand of mobile devices became fully owned by Pantech as it finalized its takeover of SK Teletech. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「SK Telecom」の詳細全文を読む スポンサード リンク
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