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SK Telecom Co., Ltd. ( or ) is a South Korean wireless telecommunications operator and former film distributor and is part of the
SK Group SK Group (Korean: SK그룹, 에스케이그룹) is the second largest South Korean chaebol behind Samsung Group. SK Group is composed of 186 subsidiaries and affiliates that share the SK brand name and the group's management culture, named SKMS ...
, one of the country's largest chaebols. It leads the local market with 50.5 percent share as of 2008. SK Telecom is the largest wireless carrier in South Korea, with 27.019 million subscribers as of Q4 2017. Since its creation in 1984, the company has evolved from a first generation analog cellular system, to second generation
CDMA Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication ...
, 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 Telematics is an interdisciplinary field encompassing telecommunications, vehicular technologies ( road transport, road safety, etc.), electrical engineering (sensors, instrumentation, wireless communications, etc.), and computer science (multime ...
service, and Digital Home, an online interface to remote-control household appliances. In 2004, SK Telecom launched Hanbyul, the world's first DMB satellite.
TU Media TU Media Corp. was South Korea's first mobile broadcast service company headquartered in Seoul, South Korea. Its name stood for "TV for you." It was established in 2003 as a subsidiary of SK Telecom. SK Telecom owned 44% of the company's shares. ...
, SK Telecom's digital media arm, handles DMB TV broadcasts. In November 2015, SK Telecom announced signing a deal to acquire CJ HelloVision, the country's largest cable and Internet operator, with the view to merge it with its own cable unit, SK Broadband. The acquisition, which will make SK Broadband the second largest cable broadcaster following KT, is opposed by competitors, who charge that the merger will help SK unfairly dominate the market.


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 1994. In June 1994
SK Group SK Group (Korean: SK그룹, 에스케이그룹) is the second largest South Korean chaebol behind Samsung Group. SK Group is composed of 186 subsidiaries and affiliates that share the SK brand name and the group's management culture, named SKMS ...
(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 Evolution-Data Optimized (EV-DO, EVDO, etc.) is a telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access. EV-DO is an evolution of the CDMA2000 (IS-2000) standard which su ...
network, offering greatly increased data transmission speeds to preexisting 2G networks. In May 2005, SK Telecom divested 60 percent of
SK Teletech Pantech Inc. ( ko, 주식회사 팬택) is a South Korean company that manufactures mobile phones. Established in 1991, its market is mainly domestic with partners in the United States, Japan, China, Europe and finally Vietnam. In 2012 Pantech ...
stock to cellphone maker
Pantech Pantech Inc. ( ko, 주식회사 팬택) is a South Korean company that manufactures mobile phones. Established in 1991, its market is mainly domestic with partners in the United States, Japan, China, Europe and finally Vietnam. In 2012 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.


1984–1993: Early Years

Founded on March 29, 1984, as Korea Mobile Telecommunications Services Corp., the state-owned carrier introduced
pager A pager (also known as a beeper or bleeper) is a wireless telecommunications device that receives and displays alphanumeric or voice messages. One-way pagers can only receive messages, while response pagers and two-way pagers can also acknow ...
s and
car phone A car phone is a mobile radio telephone specifically designed for and fitted into an automobile. This service originated with the Bell System and was first used in St. Louis on June 17, 1946. Overview The original equipment weighed , and th ...
s to the Korean market. May 1984 saw the launch of the car phone service. Korea Mobile changed its name to Korea Mobile Telecommunications Corp. (KMTC) in May 1988. In July, AMPS
cellular network A cellular network or mobile network is a communication network where the link to and from end nodes is wireless. The network is distributed over land areas called "cells", each served by at least one fixed-location transceiver (typically thr ...
was initially launched in Seoul metropolitan area. By 1991 nationwide coverage was complete. In April 1993, the South Korean government, through KMTC, adopted CDMA as the national cellular telephone system.


1994–1996: Privatization and the CDMA standard

Through privatization, SK Group became Korea Mobile Telecommunications Corp.'s largest shareholder in June 1994.
In October 1994, Korea's first CDMA system was introduced to the public for the first time. In January 1995, KMTC reached the one million subscriber mark. Korea Mobile Telecommunications became the third Korean firm to be listed on the NYSE exchange ( ADR) in June 1996. Later that year South Korea got its first commercial CDMA (IS-95A) network. Operating in Seoul in October, it is considered one of the world's earliest commercial CDMA networks.


1997–2000: International expansion

SK Group completed its takeover of KMTC in January 1997, as it became the world's sixth carrier to attain ten million subscriptions. Around that time, it also began constructing the Northeast Asian CDMA belt encompassing China, Japan, Vietnam, and the rest of the Asian continent. In March 1997, to reflect new changes, KMTC changed its name to SK Telecom, and in October, NetsGo, an online service, was launched. In June 1998, SK Telink, the international call service division, started offering commercial overseas call service. In December 1998,
SK Teletech Pantech Inc. ( ko, 주식회사 팬택) is a South Korean company that manufactures mobile phones. Established in 1991, its market is mainly domestic with partners in the United States, Japan, China, Europe and finally Vietnam. In 2012 Pantech ...
launched its first handset. In April 1999, SK Telecom entered the Mongolian market by co-founding Skytel LLC with nearly 30 percent ownership stake.
TTL, a wireless plan targeting younger users, and nTOP, a cellular internet service were launched in July and October 1999, respectively.
In December 1999, SK Telecom surpassed ten million subscriber mark, the following month, it launched the world's first commercial CDMA2000 service. By the end of the year the carrier won a contract for asynchronous IMT-2000 (WCDMA) facility.


2001–2007: Cellular internet and market accrual

The new millennium ushered in an era of cross-platform online networks that saw efforts to integrate mobile services, as SK Telecom was exploring new value-creating models such as m-Commerce and satellite DMB Service. In January 2002, an acquisition of Shinsegi Telecomm Inc. was completed. In the same month also, the company deployed world's first commercial synchronous IMT-2000 facility.
In March 2002, the carrier struck international roaming deals between countries using
CDMA Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication ...
and
GSM The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G) digital cellular networks used by mobile devices such as ...
networks. An agreement was signed with Israel's Pele-Phone in April to sell proprietary software that will operate on the carrier's existing CDMA network and future 1x-CDMA network. In July, a MoU was signed with
China Unicom China United Network Communications Group Co., Ltd. () or China Unicom () (CUniq in short) is a Chinese state-owned telecommunications operator. Started as a wireless paging and GSM mobile operator, it currently provides a range of services i ...
to establish a joint venture. In November two mobile applications ‘June’ and ‘Moneta’ were launched. In July 2003, S-Fone, a commercial CDMA network became operative in Vietnam. In August 2003, June became the world's first 3G service to have one million subscribers. In February 2004, SK won a contract for a joint venture with China Unicom, called UNISK. In March 2004, Hanbyul, the world's first DMB satellite, was launched.
MelOn A melon is any of various plants of the family Cucurbitaceae with sweet, edible, and fleshy fruit. The word "melon" can refer to either the plant or specifically to the fruit. Botanically, a melon is a kind of berry, specifically a " pepo". The ...
, an online music store was launched in November 2004. ‘1mm’ and ‘Loview,’ a digital photo frame service were launched in April and November 2005, respectively. By December, MelOn had four million subscribers.
SK Telecom started 2006 with record revenues of . In May the world's first commercial HSDPA handset was released. May also saw the carrier's entry into the U.S. wireless communication market with Helio. In June, SK Telecom signed a strategic partnership with
China Unicom China United Network Communications Group Co., Ltd. () or China Unicom () (CUniq in short) is a Chinese state-owned telecommunications operator. Started as a wireless paging and GSM mobile operator, it currently provides a range of services i ...
to purchase CB worth $1 billion in its subsidiary, China Unicom Hong Kong. In the same month SK deployed its WiBro internet network. In April 2007, a project to create
TD-SCDMA The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the Int ...
, China's 3G wireless broadband equivalent was signed with the Chinese government. Around that time,
S-Fone S-Fone was a mobile communication operator in Vietnam that used the CDMA technology. Founded on 1 July 2003 in Ho Chi Minh City, Vietnam, S-Fone became the third network of Vietnam, breaking the duopoly of the two VNPT operators. It is the t ...
had two million subscribers in Vietnam.


2008–present: Landline and new technologies

In November 2008, SK signed an agreement to buy a controlling stake of fixed-line phone company Hanaro Telecom for from a consortium led by
AIG American International Group, Inc. (AIG) is an American multinational finance and insurance corporation with operations in more than 80 countries and jurisdictions. , AIG companies employed 49,600 people.https://www.aig.com/content/dam/aig/amer ...
and
Newbridge Capital TPG Inc., previously known as Texas Pacific Group and TPG Capital, is an American investment company based in Fort Worth, Texas. The private equity firm is focused on leveraged buyouts and growth capital. TPG manages investment funds in growth c ...
. The new entity will be the second-largest telecom firm in terms of total assets and revenues next to KT Corp. In 2013 SK Telecom was the world's first operator to offer a commercial LTE-Advanced network under the brand name ''bandLTE''. This coincided with the release of the Samsung Galaxy S4 LTE-A model, which offered a step-up CPU ( Snapdragon 800 vs.
Snapdragon 600 This is a list of Qualcomm Snapdragon systems on chips (SoC) made by Qualcomm for use in smartphones, tablets, laptops, 2-in-1 PCs, smartwatches, and smartbooks devices. Before Snapdragon SoC made by Qualcomm before it was renamed to Snapdr ...
used in the regular model) and also LTE-Advanced capabilities. SK Telecom supported this handset at launch. On July 6, 2013, it was reported that Apple was in talks with SK Telecom to release the iPhone 5s model on SK's LTE Advanced network. On December 17, 2018 SK Telecom introduced the 'baro' roaming plan which offers unlimited use of international roaming voice calls. As of June 2019, 'baro' has drawn 2.2 million customers and 38 million total calls (with a total of 800,000 hours of voice calls). It also won the 'Best Mobile Technology Breakthrough in Asia' award at the 2019 Asia Mobile Awards carried as section of MWC19 Shanghai. In June 2019, SK Telecom announced the launching of the world's first 5G roaming service partnering with Swisscom. In October 2020, SK Telecom formed a partnership with Uber Technologies, with a plan to break off mobility operation into a subsidiary called T Map Mobility. In November 2021, SK Telecom spun off of a new company focusing on investments, semiconductors and ICT, SK Square.


Services

As of August 2020, SK Telecom operates 2G IS-95/
CDMA 2000 CDMA2000 (also known as C2K or IMT Multi‑Carrier (IMT‑MC)) is a family of 3G mobile technology standards for sending voice, data, and signaling data between mobile phones and cell sites. It is developed by 3GPP2 as a backwards-compatible s ...
, 3G
WCDMA The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the In ...
/ HSPA+, 4G Mobile WiMAX, LTE, and 5G networks. The 2G network supports CDMA ( IS-95A/B), CDMA2000, and
EV-DO Evolution-Data Optimized (EV-DO, EVDO, etc.) is a telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access. EV-DO is an evolution of the CDMA2000 (IS-2000) standard which su ...
. EV-DO handsets are marked with its service name "June". The 3G network supports
WCDMA The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the In ...
,
HSPA HSPA may refer to: * High Speed Packet Access, a mobile broadband technology * Hawaiian Sugar Planters' Association Education * High School Proficiency Assessment The High School Proficiency Assessment (HSPA, pronounced "hess-pah" (/ˈhɛspə/) ...
, and HSPA+. SK Telecom has the best HSPA+ coverage in South Korea. HSPA+ is available in 50+ major cities and towns, while KT HSPA+ is available in selected metropolitan areas. 3.9G LTE, which uses both band 5 and band 3, supports multi-carrier technology, which SK Telecom claims to be the first operator to offer. From May 2005 to September 2012, SK Telecom provided
S-DMB S-DMB (Satellite-DMB) was a hybrid version of the Digital Multimedia Broadcasting. The S-DMB used the S band (2170-2200 MHz) of IMT-2000. and delivered around 18 channels at 128 kbit/s in 15 MHz. It incorporated a high power geostation ...
through its subsidiary
TU Media TU Media Corp. was South Korea's first mobile broadcast service company headquartered in Seoul, South Korea. Its name stood for "TV for you." It was established in 2003 as a subsidiary of SK Telecom. SK Telecom owned 44% of the company's shares. ...
(later SK Telink). S-DMB service was ceased in September 2012 after significant losses in its final years. SK Telecom also provides online multiplatform entertainment, business and financial services: *
MelOn A melon is any of various plants of the family Cucurbitaceae with sweet, edible, and fleshy fruit. The word "melon" can refer to either the plant or specifically to the fruit. Botanically, a melon is a kind of berry, specifically a " pepo". The ...
: Introduced in November 2004, MelOn is SK Telecom's music e-store, which allows users to download or stream music over the internet. Music can be played on mobile phones, digital audio players, portable media players and digital cameras. Users can create their own ringtones. In 2009,
LOEN Entertainment Kakao M (; formerly Seoul Records, YBM Seoul Records and LOEN Entertainment) was a South Korean entertainment company established by Min Yeong-bin in 1978. It is currently one of the largest co-publisher companies in South Korea. The company op ...
, an SK Group record label, became the company-in-charge of running MelOn. An Indonesian version of MelOn was created in cooperation with PT
Telkom Indonesia PT Telkom Indonesia (Persero) Tbk, also simply known as Telkom, is an Indonesian multinational telecommunications conglomerate. Telkom is listed on the Indonesia Stock Exchange and has a secondary listing on the New York Stock Exchange. The ...
. Both MelOn and LOEN Entertainment was later owned by Kakao. * m-Finance: an online banking system introduced in 2001, allows users to take charge of all their financial transactions. Properly equipped mobile phones can do basic banking such as wire transfers and checking balances as well as stock trading and credit card services. Users can also withdraw cash from ATMs using their phones. * Digital Home: Digital Home allows users to control and monitor home appliances, lighting, security systems and fire alarms remotely. The service utilizes high-speed internet, telephone and cable networks to achieve functionality. * Mobile RFID (m-RFID): Phones with embedded RF readers can give users key information about a product before making a purchase. SK Telecom has tested this technology for six applications including, safety, authentication, package tracking, supply chain management, digital content usage and location-based services.


International markets

SK Telecom is currently putting its efforts in expanding into global markets, such as Vietnam, U.S., China and the Philippines. The company is also forging strategic alliances with other global carriers and IT businesses.


China

In 2000, SK Telecom first entered China, later forming a joint venture with
China Unicom China United Network Communications Group Co., Ltd. () or China Unicom () (CUniq in short) is a Chinese state-owned telecommunications operator. Started as a wireless paging and GSM mobile operator, it currently provides a range of services i ...
for wireless Internet service in February 2004. This joint venture between a foreign and local company, UNISK, is the first of its kind in China. In 2006, SK Telecom bought $1 billion worth of convertible bonds of
China Unicom China United Network Communications Group Co., Ltd. () or China Unicom () (CUniq in short) is a Chinese state-owned telecommunications operator. Started as a wireless paging and GSM mobile operator, it currently provides a range of services i ...
Hong Kong, a division of China Unicom and agreed to cooperate in joint sourcing of handsets, development of additional services, platform development, marketing and distribution, customer relationship management, and network development. One result of this partnership is jointly developing handsets to be sourced by Samsung, LG, and Motorola. In August 2006, SK Telecom signed an MoU making it the first non-Chinese company to participate in the
TD-SCDMA The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the Int ...
Project. Under the agreement SK Telecom will work with China's National Development and Reform Commission (NDRC) on development of
TD-SCDMA The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the Int ...
, China's 3G Internet standard equivalent.


United States


Helio

On January 26, 2005, SK Telecom announced that it had formed a $440 million joint venture with Earthlink to form a new U.S. cellular carrier named SK-Earthlink, later that year, the name was changed to Helio. Combined with Earthlink, Helio is expected to offer a variety of advanced mobile devices, many of which are already available in Korea. These models would be refined and updated for use by tech-savvy American consumers, allowing for the first time handsets with functionalities previously unavailable in the U.S. market. The now-defunct venture operated on the premise of being a
mobile virtual network operator A mobile virtual network operator (MVNO) is a wireless communications services provider that does not own the wireless network infrastructure over which it provides services to its customers. An MVNO enters into a business agreement with a mobile ...
(
MVNO A mobile virtual network operator (MVNO) is a wireless communications services provider that does not own the wireless network infrastructure over which it provides services to its customers. An MVNO enters into a business agreement with a mobile ...
), using
CDMA Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication ...
1xEVDO network capacity leased from Sprint Nextel. In 2007, SK Telecom began talks to purchase a stake in Sprint Nextel, however by 2008 it had backed away from the deal. On June 27, 2008, it was reported that Helio was being acquired in an all-stock deal by
Virgin Mobile Virgin Mobile is a wireless communications brand used by seven independent brand-licensees worldwide. Virgin Mobile branded wireless communications services are available in the United Kingdom, Ireland, Canada, Colombia, Chile, Kuwait, Saudi Ara ...
; for a net acquisition price of $39 million —–a far cry from the $500 million originally invested in the venture. All staff were eliminated and the business ceased as a going concern


Mobile Money Ventures

On March 6, 2008, SK Telecom launched Mobile Money Ventures, a joint venture with
Citibank Citibank, N. A. (N. A. stands for " National Association") is the primary U.S. banking subsidiary of financial services multinational Citigroup. Citibank was founded in 1812 as the City Bank of New York, and later became First National City Ba ...
. On March 28, 2011, SK Telecom made a surprise bid to acquire bankrupt movie/game rental company
Blockbuster Inc. Blockbuster LLC, formerly known as Blockbuster Video, was an American-based provider of home video and video game rental services. Services were offered primarily at video rental shops, but later alternatives included DVD-by-mail, streaming, v ...
SK bid $284.5 million for Blockbuster, but ended up losing to
Dish Network DISH Network Corporation (DISH, an acronym for DIgital Sky Highway) is an American television provider and the owner of the direct-broadcast satellite provider Dish, commonly known as Dish Network, and the over-the-top IPTV service, Sling TV ...
.


SK Telecom Americas Innopartners

On March 4, 2014, SK Telecom announced that its U.S. arm, SK Telecom Americas, Inc. completed the establishment of the startup accelerator SK Telecom Americas Innopartners. The accelerator invests in early stage core technology startups. It is set up to incubate 11 startups at the same time, and currently is hosting three of them (Etopus, N43, Pavilion Data).


Vietnam

In September 2001, SK Telecom established S-Telecom, through a Business Cooperation Contract (BCC) with SPT (Saigon Postel), a Vietnamese phone company with a CDMA license. S-Telecom, Vietnam's first CDMA wireless carrier, launched commercial services in July 2003 and has since upgraded its network to CDMA2000
1xEV-DO Evolution-Data Optimized (EV-DO, EVDO, etc.) is a telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access. EV-DO is an evolution of the CDMA2000 (IS-2000) standard which su ...
to meet growing demand. Currently 64 cities including Ho Chi Minh City and Hanoi are served under the S-Fone brand. As of October 2006, the company was providing EV-DO wireless internet services in five major cities including Hanoi and Ho Chi Minh City. S-Fone subscribers reached two million in April 2007, a little over three years after its start.


Philippines

SK Telecom announced on October 28, 2019, that they will deploy 5G services in the Philippines, in partnership with Now Telecom.


Subsidiaries

SK Telecom has a number of subsidiaries that support its growth. In 2006, SK Communications expanded into new markets with an enhanced version of Korea's leading
social networking A social network is a social structure made up of a set of social actors (such as individuals or organizations), sets of dyadic ties, and other social interactions between actors. The social network perspective provides a set of methods for an ...
site Cyworld. At home, NateOn is the leading messenger service with more than 13 million users as of 2006. SK Telink, the international telephony division, launched international Korean SMS messaging in the U.S., today it operates in more than 170 countries. TU Media, the nationwide satellite Digital Multimedia Broadcasting (DMB) service, is also making fast growth, attracting over one million subscribers in 2006.


NetsGo

With Thrunet and Hanaro controlling nearly half of the growing high-speed Internet market, SK Telecom entered the market in late 1999 with Dream NetsGo, a
cable Internet In telecommunications, cable Internet access, shortened to cable Internet, is a form of broadband Internet access which uses the same infrastructure as a cable television. Like digital subscriber line and fiber to the premises services, cable Inte ...
provider that offered its services in a partnership with local cable TV operator Dreamcity Media. It provided Internet access at a speed of up to 10 Mbit/s using the cable TV network, which had 120,000 subscribers at the time. In 2002 NetsGo merged with Lycos Korea to form SK Communications.


SK Broadband

Founded as Hanaro Telecom, Inc. in 1997 and was the only fixed-line and cable operator beside the state-owned KT. It provides local, domestic long-distance and international long-distance fixed-line telephone services to residential and commercial subscribers. After acquiring Thrunet, Korea's second-rated broadband company in 2005, Hanaro became a provider of broadband Internet access service and other Internet-related services, including video-on-demand and IPTV services.
Other Internet-related businesses include intelligent network, Internet leased lines, domestic leased line, VPN, Internet data center, and CDN services. Its new businesses include platform, business-to-business (B2B), healthcare.
The company's Internet Protocol (IP)-based central exchange system provides Centrex functions (internal calls, customer service numbers, etc.) and offers additional features, such as multiple bell tones, forwarding desk (receptionist function), conference call, call center and voice message functions. It also provides managed services and Information and Communications Technology (ICT) consulting services. Hanaro Telecom was acquired by SK Telecom in 2008 and became a wholly owned subsidiary in mid 2015.


SK Communications

Founded in 1999 as Lycos Korea, SK Communications is the technology company responsible for some of the most successful internet tools and products in the Korean market. After the company's 2002 takeover by SK Telecom, online portal Nate was launched and has since grown to be one of the most popular portals in Korea. The largest social media site in Korea,
Cyworld Cyworld () is a South Korean social network service. Cyworld was originally part of SK communication, and became an independent company in 2014. Members cultivate relationships by forming ''Ilchon'' (, Hanja: ) or "friendships" with each other ...
has seen a sharp rise in its membership, with members reaching 20 million from 16 million in 2005. SK Communications also provides the top instant messaging service
NateOn Nate () is a South Korean web portal, developed by SK Communications. In 2003, Nate acquired social media site Cyworld and in 2004, it achieved first place in local page views with a total of 3.8 million, surpassing rival Daum for the first time. ...
. As of December 2006, NateOn had 13 million users and led the local market. In 2006, the ''Nate.com'' portal was revamped as a Web 2.0 user-centric site with an emphasis on personalized content and social networking. Cyworld II also re-launched with Web 2.0 offerings, including a personalized mini-homepage, personalized search, UCC video and other user-customizable Web-based applications. SK Communications is currently extending its online businesses into the global market. In 2006, localized versions of Cyworld were launched in China, Germany, Japan, Taiwan, the U.S., and Vietnam. To make full use of its premium base, the tech firm is building a portfolio of content providers, including education company Etoos; consumer shopping services under the Cymarket brand, which leverage Cyworld's network and traffic; gaming subsidiary SK i-media; and Egloos, the leading independent blogging service in Korea. In addition, the company acquired a significant stake (24.4%) in a powerful online search engine,
Empas Empas (hangul: 엠파스) was one of the popular total internet search tools and web portal sites in South Korea. The service was launched in 1998 by Knowledge Plant Corporation (), which changed its name to Empas Corporation in 2004. The name ' ...
, for KRW 37.2 billion.


SK Planet

SK Planet SK Planet Co., Ltd. (Hangul: SK 플래닛 or 에스케이 플래닛), a subsidiary of SK Telecom, was established in 2011 and is an internet platform development company located in Pangyo, South Korea’s silicon valley with operations in 8 count ...
is the e-commerce division of SK headquartered in Pangyo. Business areas include digital contents, integrated commerce and marketing communication. Its October 2011 launch marked the reorganization of T Store. SK Planet launched }, an app store in Japan. 11st is one of the biggest online store complexes in South Korea under the management of SK Planet. Other products include Smart Wallet, a mobile wallet service, OK Cashbag, an integrated mileage service, and Gifticon, a mobile voucher service. As part of the integrated commerce strategy these services are being combined under the brand Syrup. On November 14, 2014, SK Planet formed a joint venture with Celcom Axiata Berhad of Malaysia. The new e-commerce company is known as Celcom Planet Sdn. Bhd., its online outlet is called 11street Malaysia.


SK Telink

Founded in April 1998 as an international telephony service provider, SK Telink has grown into a major player in the international calling market. International call services are offered under the ‘00700’ brand. Building on the commercial long-distance telephony and value-added services launched in 2005, the carrier began offering Korean text messaging in June 2006 in the U.S. The service allows subscribers send and receive Korean text messages in the U.S., as well as to and from Korea.


TU Media

Established in December 2003, TU Media Corp. introduced a new digital media service —satellite Digital Multimedia Broadcasting (DMB). Subscribers can now view satellite TV broadcasts on their portable handsets or via vehicle-mounted terminals. As of December 2006, subscribers to TU Media topped one million, up from 372,000 in 2005. Its nationwide DMB is available on 37 channels, consisting of 16 video, 20 audio and one data, and provides programs on education, games, drama, music, news and culture. In 2006, TU Media launched TUBOX, a pay-per-view movie channel that allows subscribers to see movies prior to DVD release. In addition to South Korea's 84 cities, TU Media provides service in express highways and Seoul metropolitan subways. DMB coverage was later expanded to include the Korea Train eXpress ( KTX) Seoul to Busan line, Busan subways and 10 metropolitan Seoul local highways. In 2010 TU Media was merged with another subsidiary, SK Telink, Korea's leading international call service provider. DMB broadcasts ended two years later as it became uncompetitive in the mobile TV market.


SK Square

Established in November 2021 through a spin-off, SK Square aim to work in the semiconductor industry as well as invest in media, security services and online shopping companies. As part of the re-organization, Dreamus and various other companies became subsidiaries. SK Square is owned by SK Inc, at 30.01 percent, who are the largest shareholder. Dreamus Company, formerly known as iriver Inc. became a subsidiary with SQ Square being the largest shareholder at 51.4 percent.


SK Sports

SK is a major sponsor in domestic professional sports. It also owns an esports team as part of a cooperation with Comcast Spectacor. * Baseball: SK Telecom previously owned SK Wyverns before it was sold to Shinsegae, becoming
SSG Landers SSG Landers () are a South Korean professional baseball team. The team was originally established as the SK Wyverns but was renamed as the SSG Landers in 2021 after Shinsegae acquired the team from SK Group. They are a member of the KBO League. ...
. * Basketball:
Seoul SK Knights The Seoul SK Knights ( ko, 서울 SK 나이츠) is a professional basketball club in the Korean Basketball League. The club was originally founded by Jinro Group in 1997 as Cheongju Jinro McCass. Before the official launch of the basketball cl ...
(
Korean Basketball League The Korean Basketball League (KBL; ) is a professional men's basketball league in South Korea which was established in 1997. The league consists of ten teams and each team plays a total of 54 games (27 home and 27 away) in the regular season. H ...
) * Fencing: SK has sponsored the Seoul Grand Prix of the
Fencing World Cup The FIE Fencing World Cup is an international fencing competition held by the Fédération Internationale d'Escrime. In each weapon (Men's and Women's Épée, Sabre and Foil), three Grand Prix, five World Cup events and several satellite events a ...
circuit and the Korean Fencing Federation's national fencers since 2003. * Football: Jeju United FC (
K League 1 The K League 1 ( Hangul: K리그1) is the men's top professional football division of the South Korean football league system. The league is contested by twelve clubs. History The South Korean professional football league was founded in ...
) * Golf: SK sponsors the SK Telecom Open golf tournament and several golfers. * Handball: SK is the main sponsor of the
Handball Korea League The Handball Korea League is a handball league in South Korea. The league has been sponsored by the SK Group since 2011 and is therefore called the ''SK Handball Korea League''. The league finals are hosted at the SK Olympic Handball Gymnasium wi ...
and established the women's team
SK Sugar Gliders SK Sugar Gliders is a South Korean women's handball club based in Gwangmyeong Gwangmyeong (; Korean: 광명시) is a city in Gyeonggi Province, South Korea. It borders Seoul to the east, north and northeast, Anyang to the southeast, Siheung ...
. * Speed skating: SK sponsors the national short track speed skating team. One of SK Telecom's major corporate rivals is KT Corporation. Match-ups between teams owned by both companies are dubbed the "Telecommunications Derby" by the media. The rivalry is contested in esports and men's basketball. When SK owned a baseball team, the term was also applied to match-ups between SK Wyverns and
KT Wiz KT Wiz ( ko, KT 위즈) are a South Korean professional baseball team based in Suwon. They are a member of the KBO League. Their home stadium is Suwon Baseball Stadium in Suwon. History On 11 January 2013, the Korea Baseball Organization offi ...
. Due to KT Wiz being a relatively new franchise and having a poor record for much of its early years, the "rivalry" was largely one-sided and given less attention compared to esports and basketball, where such match-ups are generally hotly contested affairs.


See also

*
Cyworld Cyworld () is a South Korean social network service. Cyworld was originally part of SK communication, and became an independent company in 2014. Members cultivate relationships by forming ''Ilchon'' (, Hanja: ) or "friendships" with each other ...
* KT Corporation *
LG Uplus , native_name_lang = ko , romanized_name = , former type = , type = Public , traded_as = , industry = Telecommunications , genre = , fate = , predecessor = LG Telecom , successor = , foundation = , founder = , defunct = , l ...
*
SK Group SK Group (Korean: SK그룹, 에스케이그룹) is the second largest South Korean chaebol behind Samsung Group. SK Group is composed of 186 subsidiaries and affiliates that share the SK brand name and the group's management culture, named SKMS ...
*
SK Telecom T1 T1 (previously known as SK Telecom T1 or SKT T1) is a South Korean esports organization operated by the T1 Entertainment & Sports, a joint venture between SK Telecom and Comcast Spectacor. At the end of 2003, SK Telecom took the StarCraft Team O ...
*
SK Teletech Pantech Inc. ( ko, 주식회사 팬택) is a South Korean company that manufactures mobile phones. Established in 1991, its market is mainly domestic with partners in the United States, Japan, China, Europe and finally Vietnam. In 2012 Pantech ...
(Now merged with
Pantech Pantech Inc. ( ko, 주식회사 팬택) is a South Korean company that manufactures mobile phones. Established in 1991, its market is mainly domestic with partners in the United States, Japan, China, Europe and finally Vietnam. In 2012 Pantech ...
& Sky Electronics) *
TU Media TU Media Corp. was South Korea's first mobile broadcast service company headquartered in Seoul, South Korea. Its name stood for "TV for you." It was established in 2003 as a subsidiary of SK Telecom. SK Telecom owned 44% of the company's shares. ...


References


External links

*
SK Telecom T world website
* * SK Telecom Americas website
English
{{DEFAULTSORT:Sk Telecom 1984 establishments in South Korea Companies based in Seoul Companies listed on the Korea Exchange Companies listed on the New York Stock Exchange Mobile phone companies of South Korea Telecom South Korean brands Telecommunications companies established in 1984 Telecommunications companies of South Korea Film distributors of South Korea