View source for SK Telecom

{{Short description|South Korean telecommunications company}}
{{redirect|SKT}}
{{distinguish|Slovak Telekom}}
<!-- Redirect 'Korea Mobile'; 'Korea Mobile Telecommunications Services Corp.'; 'Hankuk Idong Tongshin';'SKM (NYSE ticker symbol)'; '017670 (Korean Exchange ticker symbol)' to this article --> 
{{Use mdy dates|date=October 2019}}
{{Infobox company
| name = SK Telecom Co., Ltd. <br /> 에스케이텔레콤주식회사
| logo = SK Telecom Logo.svg
| logo_alt = The words 'SK telecom' written in orange, with a simple image of a butterfly above it.
| image = 
| type = [[Public company|Public]]
| traded_as = {{kse|017670}} <br />{{nyse|SKM}}
| foundation = {{start date and age|April 20, 1984}} (as Korea Mobile Telecommunications) <br />{{start date and age|1997}} (as SK Telecom)
| parent = [[SK Inc.]]
| area_served = [[South Korea]]
| location = [[Jung District, Seoul|Jung District]], [[Seoul]], [[South Korea]]
| key_people = {{interlanguage link|Young Sang Ryu|ko|유영상}} {{small|([[Chief executive officer|CEO]])}}<ref>{{cite web |url=https://www.sktelecom.com/en/view/esg/board-of-directors.do |website=SK Telecom |access-date=4 November 2024|title=Board of Directors}}</ref>
| industry = [[Telecommunications]]
| products = [[Wireless#Mobile telephones|Wireless telecom]]<br />[[Mobile Web|Cellular internet]]<br />[[Internet]]<br />Mobile platform<br />[[Internet of things]]
| revenue = {{profit}} {{KRW|link=yes}}17.95 trillion (2024, consolidated)<ref>{{cite news|title=SK Telecom Co., Ltd. (SKM) Income Statement|work=Yahoo! Finance|url=https://finance.yahoo.com/quote/SKM/key-statistics/|access-date=22 July 2025}}</ref>
| operating_income = 
| net_income = 
| num_employees = 40,543
| subsid = see [[#Subsidiaries|this list]]
| homepage = {{URL|https://sktelecom.com}}
}}

'''SK Telecom Co., Ltd.''', abbreviated as '''SKT''' ({{Korean|SK텔레콤}} or {{Korean|에스케이텔레콤|labels=no}}) is a South Korean [[Wireless#Mobile telephones|wireless]] telecommunications operator and former film distributor and is part of the [[SK Group]], one of the country's largest [[chaebol]]s. It leads the local market with 50.5 percent share as of 2008.<ref>{{cite news|author=Lee Sun-young|newspaper=[[The Korea Herald]]|publisher=naver.com|url=http://news.naver.com/main/read.nhn?mode=LPOD&mid=etc&oid=044&aid=0000070179|title=Mobile operators pressured to cut call, message rates|date=May 5, 2008|access-date=May 8, 2008}}</ref> SK Telecom is the [[List of mobile network operators of the Asia Pacific region#South Korea|largest wireless carrier in South Korea]], with 23 million subscribers as of Q4 2023.<ref>{{cite web |url=https://www.netmanias.com/en/korea-ict-market-data/korea-ict-market/1411/ |title=Korea Communication Market Data |publisher=Netmanias |date=30 May 2018 |access-date=30 May 2018}}</ref>

Since its creation in 1984, the company has evolved from a first generation [[Advanced Mobile Phone System|analog cellular]] system, to second generation [[Code division multiple access|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 [[High-Speed Downlink Packet Access|HSDPA]] in May 2006. SK expanded into the landline market by acquiring second-rated fixed-line operator Hanaro Telecom in February 2008.<ref>{{Cite web |title=Startup {{!}} Compare SK Telecom vs Comm100 reviews {{!}} Build Ai |url=https://buildai.com/startup/companies/compare/comm100~sk-telecom |access-date=2022-08-29 |website=buildai.com}}</ref>

The company's online brands include [[Nate (web portal)|Nate]], a [[web portal]], June, a mobile multimedia service, Moneta, an [[Online banking|e-banking]] mobile app, Nate Drive, a [[telematics]] service, and Digital Home, an online interface to remote-control household appliances.<ref>{{cite web|url=http://www.sktelecom.com/en/sktelecom/pr_center/pr_center02.jsp|title=Brand History|publisher=SK Telecom Co., LTD|url-status=dead|archive-url=https://web.archive.org/web/20150509104654/http://www.sktelecom.com/en/sktelecom/pr_center/pr_center02.jsp|archive-date=2015-05-09}}</ref>

In 2004, SK Telecom launched Hanbyul, the world's first DMB satellite. [[TU Media]], SK Telecom's digital media arm, handles DMB TV broadcasts.{{citation needed|date=November 2022}}

In November 2015, SK Telecom announced signing a deal to acquire [[CJ Group|CJ]] HelloVision, the country's largest cable and Internet operator, with the view to merge it with its own cable unit, SK Broadband.<ref name="CJ">{{cite web|date=November 2, 2015|url=http://m.koreatimes.co.kr/phone/news/view.jsp?req_newsidx=190023|archive-url=https://web.archive.org/web/20160304103914/http://m.koreatimes.co.kr/phone/news/view.jsp?req_newsidx=190023|url-status=dead|archive-date=March 4, 2016|title=SKT inks deal to buy CJ HelloVision|author=Lee Min-hyung|work=Korea Times}}</ref> The acquisition, which will make SK Broadband the second largest cable broadcaster following [[KT Corporation|KT]],<ref>{{cite web|date=November 2, 2015|title=SK Telecom will buy cable firm|url=http://koreajoongangdaily.joins.com/news/article/article.aspx?aid=3011007&cloc=joongangdaily|author1=JEON YOUNG-SEON |author2=KIM JI-YOON|publisher= Joongang Media Network|archive-url=https://web.archive.org/web/20191117221129/http://koreajoongangdaily.joins.com/news/article/article.aspx?aId=3011007|archive-date=2019-11-17|url-status=dead}}</ref> is opposed by competitors, who charge that the merger will help SK unfairly dominate the market.<ref>{{cite news|url=http://koreabizwire.com/sk-telecom-sets-out-new-vision-m-takeover-amid-criticism/45918|title=SK Telecom Sets out New Vision with Takeover Amid Criticism|date=December 2, 2015|agency=Korea Bizwire |location=Seoul|publisher=Kobiz Media Co., Ltd}}</ref><ref>{{Cite news|url = http://www.yonhapnews.co.kr/bulletin/2015/12/01/0200000000AKR20151201111351017.HTML|title = SKT, CJ헬로비전 인수합병 신청...내년 2월 전 판가름(종합)|last=현|first=윤경|date = 2015-12-01|work=[[Yonhap News Agency]] |language = ko }}</ref>

== History ==
SK Telecom was established in March 1984 under the name Korea Mobile Telecommunications Services Corp. (KMTSC; {{Korean|한국 이동 통신 서비스}}), but was renamed Korea Mobile Telecommunications Corp. (KMTC; {{Korean|한국 이동 통신}}) in May 1988. It was a subsidiary of the state monopoly phone company, Korea Telecom (now known as [[KT Corporation|KT Corp.]]) until KT sold it off in 1994.<ref>{{cite book|title=Building Telecom Markets: Evolution of Governance in the Korean Mobile Telecommunication Market|isbn=978-1461478881|page=140|author=Whasun Jho|date=2014|publisher=Springer }}</ref> 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.{{citation needed|date=November 2022}}

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]] [[Evolution-Data Optimized|1xEV-DO]] network, offering greatly increased data transmission speeds to preexisting [[2G]] networks.{{citation needed|date=November 2022}}

In May 2005, SK Telecom divested 60 percent of [[SK Teletech]] stock to cellphone maker [[Pantech]].<ref>{{cite news|date=May 4, 2005|title=Pantech & Curitel Buys Control Of SK Teletech|publisher=Phone Factor, LLC}}</ref> 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.{{citation needed|date=November 2022}}

=== 1984–1993: early years ===
Founded on March 29, 1984, as Korea Mobile Telecommunications Services Corp., the [[State-owned corporation|state-owned]] carrier introduced [[pager]]s and [[car phone]]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, [[Advanced Mobile Phone System|AMPS]] [[cellular network]] was initially launched in Seoul metropolitan area. By 1991 nationwide coverage was complete.{{citation needed|date=November 2022}}

In April 1993, the South Korean government, through KMTC, adopted CDMA as the national cellular telephone system.<ref>{{cite web|title=CDMA History|url=http://www.cdg.org/resources/cdma_history.asp|publisher=CDG|access-date=January 19, 2015|archive-date=December 3, 2012|archive-url=https://web.archive.org/web/20121203160903/http://www.cdg.org/resources/cdma_history.asp|url-status=dead}}</ref>

=== 1994–1996: privatization and the CDMA standard ===
Through [[privatization]], SK Group became Korea Mobile Telecommunications Corp.'s largest shareholder in June 1994.{{citation needed|date=May 2025}}<br />In October 1994, Korea's first CDMA system was introduced to the public for the first time.{{citation needed|date=November 2022}}

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 ([[American depositary receipt|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.{{citation needed|date=November 2022}}

=== 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.{{citation needed|date=November 2022}}

In March 1997, to reflect new changes, KMTC changed its name to SK Telecom, and in October, NetsGo, an online service, was launched.{{citation needed|date=November 2022}}

In June 1998, SK Telink, the international call service division, started offering commercial overseas call service. In December 1998, [[SK Teletech]] launched its first handset. In April 1999, SK Telecom entered the Mongolian market by co-founding [[Skytel (Mongolia)|Skytel LLC]] with nearly 30 percent ownership stake.{{citation needed|date=May 2025}}<br />TTL, a [[Wireless#Mobile telephones|wireless]] plan targeting younger users, and nTOP, a [[cdmaOne|cellular internet]] service were launched in July and October 1999, respectively.<br />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.<ref>{{cite news|title=SK Telecom, Korea Telecom Win IMT-2000 Licenses|url=http://english.chosun.com/site/data/html_dir/2000/12/15/2000121561241.html|newspaper=[[The Chosun Ilbo]]|publisher=[[The Chosun Ilbo]]|author=Cho Hyung-rae|date=December 15, 2000}}</ref>

=== 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.<ref>{{cite web|url=http://www.totaltele.com/view.aspx?ID=419094|website=Reuters|title=Korea approves takeover of Shinsegi|date=April 26, 2000
}}</ref> In the same month also, the company deployed world's first commercial synchronous [[IMT-2000]] facility.<br />In March 2002, the carrier struck international roaming deals between countries using [[CDMA]] and [[GSM]] networks. An agreement was signed with Israel's [[Pelephone|Pele-Phone]] in April to sell proprietary software that will operate on the carrier's existing CDMA network and future 1x-CDMA network.<ref>{{cite news|newspaper=[[Globes (newspaper)|Globes]]|author=Nadau, Efi|title=Pele-Phone signs $7m value added service deal with SK Telecom|url=http://www.globes.co.il/en/article-581913|date=April 30, 2004}}</ref> In July, a [[Memorandum of Understanding|MoU]] was signed with [[China Unicom]] 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.{{citation needed|date=November 2022}}

In February 2004, SK won a contract for a [[joint venture]] with China Unicom, called UNISK.{{citation needed|date=November 2022}}

In March 2004, Hanbyul, the world's first DMB satellite, was launched.{{citation needed|date=November 2022}}

[[Melon (online music service)|MelOn]], 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.<br />SK Telecom started 2006 with record revenues of {{KRWConvert|10|t|year=2006|showdate=no}}. 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 (wireless carrier)|Helio]]. In June, SK Telecom signed a strategic partnership with [[China Unicom]] to purchase [[Convertible bond|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]], China's [[3G]] wireless broadband equivalent was signed with the Chinese government. Around that time, [[S-Fone]] had two million subscribers in Vietnam.{{citation needed|date=November 2022}}

=== 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 {{KRWConvert|1.09|t|year=2008|showdate=no}} from a consortium led by [[American International Group|AIG]] and [[TPG Capital#Newbridge Capital|Newbridge Capital]]. The new entity will be the second-largest telecom firm in terms of total assets and revenues next to [[KT Corporation|KT Corp.]]<ref>{{cite news|date=February 21, 2008|title=SKT's Hanaro buy gives birth to mobile giant|author=Jin Hyun-joo|newspaper=[[The Korea Herald]]|url=http://web.international.ucla.edu/institute/article/87642|access-date=October 6, 2015|archive-date=October 7, 2015|archive-url=https://web.archive.org/web/20151007000523/http://web.international.ucla.edu/institute/article/87642|url-status=dead}}</ref>

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]] used in the regular model) and also LTE-Advanced capabilities. SK Telecom supported this handset at launch.<ref>{{cite web|url=https://www.engadget.com/2013/06/25/sk-telecom-lte-advanced-galaxy-s-4|title=SK Telecom launches the world's first LTE-Advanced network, and the Galaxy S4 LTE-A|publisher=Engadget|author=Lawler, Richard|date=June 25, 2013}}</ref>

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.<ref>{{cite web|url=http://www.hngn.com/articles/7048/20130705/iphone-5s-release-date-rumors-new-phone-will-4g-lte.htm|title=iPhone 5s Release Date Rumors: New Phone Will Have 4G LTE Advanced Capabilities|publisher=Hngn|author=Christie, Robert|date=July 5, 2013}}</ref>

On December 17, 2018, SK Telecom introduced the 'baro' roaming plan which offers unlimited use of international roaming voice calls.<ref>{{Cite web|url=http://www.donga.com/en/home/article/all/20190717/1792073/1/SKT-launches-world-s-first-5G-roaming-service-in-Switzerland|title=SKT launches world's first 5G roaming service in Switzerland|website=[[The Dong-a Ilbo]]|date=July 17, 2019 |language=en|access-date=2019-07-23}}</ref> 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 [[Mobile World Congress|MWC19 Shanghai]].<ref name=":0" />

In June 2019, SK Telecom announced the launching of the world's first 5G roaming service partnering with [[Swisscom]].<ref name=":0">{{Cite web|url=https://www.lightreading.com/mobile/5g/sk-telecom-launches-the-worlds-first-5g-roaming-service-with-swisscom/d/d-id/752800|title=SK Telecom Launches the World's First 5G Roaming Service With Swisscom|website=Light Reading|language=en|access-date=2019-07-22}}</ref>

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.<ref>{{Cite web|date=16 October 2020|title=SK Telecom and Uber to form ride-hailing joint venture|url=https://www.zdnet.com/article/sk-telecom-and-uber-to-form-ride-hailing-joint-venture/|access-date=16 October 2020|website=ZDNet}}</ref><ref>{{Cite web|date=16 October 2020|title=Uber joins forces with SK Telecom to crack tough South Korea market|url=https://www.todayonline.com/world/uber-invest-south-korea-sk-telecoms-mobility-business|access-date=16 October 2020|website=Today|archive-date=October 26, 2020|archive-url=https://web.archive.org/web/20201026104256/https://www.todayonline.com/world/uber-invest-south-korea-sk-telecoms-mobility-business|url-status=dead}}</ref>

In November 2021, SK Telecom spun off of a new company focusing on investments, semiconductors and [[Information and communications technology|ICT]], SK Square.<ref>{{Cite web |agency=Yonhap |date=2021-11-01 |title=SK Telecom names new CEO following non-telecom spinoff |url=https://www.koreaherald.com/view.php?ud=20211101000714 |access-date=2022-11-11 |website=[[The Korea Herald]] |language=en}}</ref>

=== Cybersecurity breach of 2021-2025 ===
On April 18, 2025, SK Telecom informed authorities of a data leak, with full scope of the leak being unknown at the time. The information leaked in this incident includes the USIM authentication key (KI), International Mobile Subscriber Identity (IMSI), device identifier (IMEI), and phone numbers.<ref>{{Cite web |date=2025-06-12 |title=[Security Issue] SKT Hack Exposes One-Third of South Koreans to Risk |url=https://www.pentasecurity.com/blog/security-issue_skt-hack-exposes-one-third-of-south-koreans-to-risk/ |access-date=2025-07-10 |website=Penta Security Inc. |language=en-US}}</ref>

In response to the breach, SK announced that all of its 23 million subscribers would be eligible for a free USIM card replacement starting from April 28, a week after the company publicly acknowledged the hack. Those who replaced their USIM earlier would be eligible for a refund.<ref>{{Cite web |last1=정 |first1=한국 |last2=이 |first2=기우 |date=2025-04-25 |title=SK텔레콤 "2300만 모든 고객 유심 무상 교체...사과드린다" |url=https://www.chosun.com/economy/industry-company/2025/04/25/MJVK6MDNDFFPHBYAEMNKGMMEBA/ |access-date=2025-04-26 |website=조선일보 |language=ko}}</ref> However, SK Telecom currently has only 1 million USIM cards available, leading to shortages and customer frustrations. Acting President Han Duck-soo directed related agencies to investigate SK Telecom's hacking countermeasures. SK said they are developing a way to format USIM cards without physically replacing them.<ref>{{Cite web |last=김 |first=명상 |date=2025-04-29 |title=교체 대신 포맷...부족한 유심에 SKT가 내놓은 새 대책 |url=https://www.edaily.co.kr/News/Read?newsId=04841286642141040&mediaCodeNo=257&OutLnkChk=Y |access-date=2025-04-29 |website=이데일리 |language=ko}}</ref><ref>{{Cite web |date=2025-04-28 |title=SK Telecom post-hack USIM replacement program thwarted by shortage |url=https://koreajoongangdaily.joins.com/news/2025-04-28/national/socialAffairs/SK-Telecom-posthack-USIM-replacement-program-thwarted-by-shortage/2295176 |access-date=2025-04-29 |website=koreajoongangdaily.joins.com |language=en}}</ref>

In July 2025, Korean Ministry of Science and ICT released a final report of the investigation.<ref>{{cite web |url=https://www.msit.go.kr/bbs/view.do?sCode=user&mPid=208&mId=307&bbsSeqNo=94&nttSeqNo=3185964 |title=SK텔레콤 침해사고 최종 조사결과 발표 |language=ko|access-date=7 July 2025}}</ref> Base on the report, SK Telecom was compromised back in 2021 with attackers remaining active in SKT network undetected until 2025. According to the report, SK Telecom failed to properly manage sensitive accounts, encrypt sensitive data and did not respond adequately to previous security breaches (according to the report, SK Telecom detected unauthorized reboot of one of the servers, detected malware but did not inform the authorities), did not store critical security log information for sufficient time.

On August 28, 2025, the [[Personal Information Protection Commission (South Korea)|Personal Information Protection Commission]] issued a 134.8 billion won (US$96.9 million) fine on SK Telecom over the data breach.<ref>{{Cite web |title=SK Telecom fined record 135 billion won over major data breach |url=https://en.yna.co.kr/view/AEN20250828005000315 |website=Yonhap |date=28 August 2025 |last1=Chae |first1=Yun-hwan}}</ref>

==Corporate governance==
As of April 6, 2023.
{| class="wikitable" style="text-align:center; width:60%;"
|-
! Shareholder !! Stake (%) !! Flag
|-
| SK Inc. || 30.01% || [[File:Flag of South Korea.svg|20px|link=South Korea]]
|-
| [[National Pension Service]] || 7.74% || [[File:Flag of South Korea.svg|20px|link=South Korea]]
|-
| Treasury Stock || 0.37% || [[File:Flag of South Korea.svg|20px|link=South Korea]]
|}

== Services ==
As of August 2020, SK Telecom operates [[2G]] [[IS-95]]/[[CDMA 2000]], [[3G]] [[WCDMA]]/[[HSPA+]], [[4G]] [[WiBro|Mobile WiMAX]], [[LTE (telecommunication)|LTE]], and [[5G]] networks.

{| class="wikitable sortable"
|+Frequencies used by SK Telecom's Network in Korea
|-
! Frequency !! Frequency<br />band !! Frequency<br />bandwidth<br />(MHz) !! Generation !! Radio interface !! Notes
|-
|2100&nbsp;MHz
Uplink: 1955–1960
Downlink: 2145–2150
|1
|2x5
|[[3G]]
|[[UMTS]]
|
|-
|850&nbsp;MHz
Uplink: 829–839
Downlink: 874–884
|5
|2x10
|[[4G]]
|[[LTE (telecommunication)|LTE]]
|(main frequency)
|-
|1800&nbsp;MHz
Uplink: 1715–1725, 1730–1735
Downlink: 1810–1830
|3
|2x20
|[[4G]]
|[[LTE (telecommunication)|LTE]]
|
|-
|2100&nbsp;MHz
Uplink: 1940–1955
Downlink: 2130–2145
|1
|2x15
|[[4G]]
|[[LTE (telecommunication)|LTE]]
|
|-
|2600&nbsp;MHz
Uplink: 2500–2520
Downlink: 2620–2640
|7
|2x20
|[[4G]]
|[[LTE (telecommunication)|LTE]]
|
|-
|2600&nbsp;MHz
Uplink: 2540–2550
Downlink: 2660–2670
|7
|2x10
|[[4G]]
|[[LTE (telecommunication)|LTE]]
|
|-
| 3500&nbsp;MHz
3600–3700
|n78 || 100 || [[5G]] ||[[5G NR|NR]] || 
|}

The 2G network supports CDMA ([[IS-95]]A/B), [[CDMA2000]], and [[EV-DO]]. EV-DO handsets are marked with its service name "June". The 3G network supports [[WCDMA]], [[High Speed Packet Access|HSPA]], 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]] through its subsidiary [[TU Media]] (later [[SK Telink]]). S-DMB service was ceased in September 2012 after significant losses in its final years.<ref>{{cite web|url=http://money.joinsmsn.com/news/article/article.asp?total_id=8654894&ctg=1601|title=Satellite DMB soon to become history|language=ko|date=July 4, 2012|newspaper=[[JoongAng Ilbo]] Co., Ltd.|publisher=Joins MSN|url-status=usurped|archive-url=https://web.archive.org/web/20130430234653/http://money.joinsmsn.com/news/article/article.asp?total_id=8654894&ctg=1601|archive-date=April 30, 2013}}</ref>

In 2022, SK Telecom announced a partnership with [[Joby Aviation]] with the goal to create a line of [[Air taxi|flying taxis]] for the South Korean market by 2025.<ref>{{cite web|url=https://www.cnbc.com/2023/02/27/sk-telecom-to-launch-flying-taxis-in-2025-expects-big-future-revenue.html |title=A South Korean telecoms giant wants to launch flying taxis in 2025 and expects it to be big business |last=Kharpal |first=Arjun |website=CNBC |date=February 27, 2023 |publisher=CNBC LLC |access-date=February 27, 2023}}</ref>

SK Telecom also provides online multiplatform entertainment, business and financial services:

* '''[[melon (online music service)|MelOn]]''': Introduced in November 2004, MelOn is SK Telecom's music [[Online music store|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]], an SK Group record label, became the company-in-charge of running MelOn. An [[Indonesia]]n version of MelOn was created in cooperation with PT [[Telkom Indonesia]]. 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 transfer]]s 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 service]]s.

== 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]] 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.{{citation needed|date=November 2022}}

In 2006, SK Telecom bought $1 billion worth of convertible bonds of [[China Unicom]] 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]].{{citation needed|date=November 2022}}

In August 2006, SK Telecom signed an [[Memorandum of understanding|MoU]] making it the first non-Chinese company to participate in the [[TD-SCDMA]] Project. Under the agreement SK Telecom will work with China's National Development and Reform Commission (NDRC) on development of [[TD-SCDMA]], China's [[3G]] Internet standard equivalent.{{citation needed|date=November 2022}}

=== United States ===
==== Helio ====
{{Main|Helio (wireless carrier)}}

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.{{citation needed|date=November 2022}}

The now-defunct venture operated on the premise of being a [[mobile virtual network operator]] ([[List of mobile virtual network operators in South Korea|MVNO]]), using [[CDMA]] [[1xEVDO]] network capacity leased from [[Sprint Nextel]]. In 2007, SK Telecom began talks to purchase a stake in [[Sprint Nextel]],<ref>{{cite news|url=http://finance.comcast.net/stocks/news_body.html?ID_OSI=85959&ID_NEWS=29949224|title=SK TELECOM PUSHING TO ACQUIRE US TELCO SPRINT NEXTEL|date=July 25, 2007|author=Koh Byung-joon|publisher=Comcast Finance|access-date=August 3, 2007|archive-date=July 23, 2011|archive-url=https://web.archive.org/web/20110723045727/http://finance.comcast.net/stocks/news_body.html?ID_OSI=85959&ID_NEWS=29949224|url-status=dead}}</ref> however by 2008 it had backed away from the deal.<ref>{{cite news|url=http://sprintconnection.kansascity.com/?q=node/701|title=SK Telecom confirms it has no plans to buy Sprint|date=July 17, 2008|author=Dave Hayes|access-date=2011-01-17}}</ref>

On June 27, 2008, it was reported that Helio was being acquired in an all-stock deal by [[Virgin Mobile USA|Virgin Mobile]]; 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<ref>{{cite news|url=http://mobile.engadget.com/2008/06/20/helios-flame-going-out-stores-to-shutter-customers-heading-to/|title=Helio's flame going out: stores to shutter, customers heading to Virgin?|newspaper=The Kansas City Star|date=June 20, 2008|author=Ryan Block|access-date=June 16, 2011|archive-url=https://web.archive.org/web/20111009173809/http://mobile.engadget.com/2008/06/20/helios-flame-going-out-stores-to-shutter-customers-heading-to/|archive-date=October 9, 2011|url-status=dead}}</ref>

==== Mobile Money Ventures ====
On March 6, 2008, SK Telecom launched Mobile Money Ventures, a joint venture with [[Citibank]].<ref>[http://www.americanbanker.com/issues/173_46/-347230-1.html "Citi: Mobile Venture Will Go Well Beyond Basics."] ''American Banker''. March 7, 2008.</ref>

On March 28, 2011, SK Telecom made a surprise bid to acquire bankrupt movie/game rental company [[Blockbuster Inc.]]  SK bid $284.5 million for Blockbuster, but ended up losing to [[Dish Network]].{{citation needed|date=November 2022}}

==== 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.<ref>{{cite web|url=http://www.sk.com/Channel/News/view/1190|title=SK Telecom Growing New Seeds in Silicon Valley|publisher=SK Holdings|date=March 4, 2014|url-status=dead|archive-url=https://web.archive.org/web/20150119191340/http://www.sk.com/Channel/News/view/1190|archive-date=January 19, 2015}}</ref> 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).<ref>{{cite web|url=http://sktainnopartners.com/80-2|title=Portfolio|publisher=SK Telecom Americas Innopartners|url-status=dead|archive-url=https://web.archive.org/web/20140612034929/http://sktainnopartners.com/80-2/|archive-date=2014-06-12}}</ref>

=== Vietnam ===
{{Main|S-Fone}}

In September 2001, SK Telecom established S-Telecom, through a [[Corporate law in Vietnam#Business cooperation contract|Business Cooperation Contract]] (BCC) with SPT (Saigon Postel), a Vietnamese phone company with a CDMA license.{{citation needed|date=November 2022}}

S-Telecom, Vietnam's first CDMA [[wireless carrier]], launched commercial services in July 2003 and has since upgraded its network to [[CDMA2000]] [[1xEV-DO]] to meet growing demand. Currently 64 cities including Ho Chi Minh City and Hanoi are served under the S-Fone brand.{{citation needed|date=November 2022}}

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.{{citation needed|date=November 2022}}

=== Philippines ===
SK Telecom announced on October 28, 2019, that they will deploy 5G services in the Philippines, in partnership with Now Telecom.<ref>{{Cite web|url=https://www.rappler.com/business/243611-now-corporation-sk-telecom-partnership-5g|title=NOW teams up with Korea's SK Telecom for 5G rollout|date=October 29, 2019 }}</ref>

== 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 service|social networking]] 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 access|cable Internet]] provider that offered its services in a partnership with local cable TV operator [[CJ Group|Dreamcity Media]]. It provided Internet access at a speed of up to 10&nbsp;Mbit/s using the cable TV network, which had 120,000 subscribers at the time.<ref name="NetsGo">{{cite web|url=http://www.telecompaper.com/news/sk-telecom-launches-highspeed-internet-service--201238|date=December 3, 1999|title=SK Telecom Launches High-Speed Internet Service|publisher=Telecompaper}}</ref> In 2002 NetsGo merged with Lycos Korea to form SK Communications.

=== SK Broadband ===
{{Main|SK Broadband}}

Founded as Hanaro Telecom, Inc. in 1997 and was the only fixed-line and cable operator beside the state-owned [[KT Corporation|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.<br /> 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.<br /> 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.<ref>{{cite web|url=https://www.google.com/finance/?cid795562393542878|title=SK Broadband Co Ltd- KOSDAQ-033630 Quotes & News|publisher=Google Finance}}</ref> Hanaro Telecom was acquired by SK Telecom in 2008 and became a wholly owned subsidiary in mid 2015.<ref>{{cite web|title=Rating Action: Moody's affirms SK Telecom's A3 ratings on announced acquisition of SK Broadband; outlook remains stable|date=March 23, 2015|url=http://m.moodys.com/research/Moodys-affirms-SK-Telecoms-A3-ratings-on-announced-acquisition-of--PR_321371|publisher=Moody's Investor Service|access-date=January 3, 2016|archive-date=January 19, 2019|archive-url=https://web.archive.org/web/20190119230719/https://m.moodys.com/research/Moodys-affirms-SK-Telecoms-A3-ratings-on-announced-acquisition-of--PR_321371|url-status=dead}}</ref>

=== SK Communications ===
{{Main|SK Communications}}

Founded in 1999 as [[Lycos]] Korea,<ref>{{cite web|url=http://www.skcomms.co.kr/eng/aboutUs_04.html|title=Company History|publisher=SK Communications|access-date=June 14, 2015|archive-url=https://web.archive.org/web/20150429072441/http://www.skcomms.co.kr/eng/aboutUs_04.html|archive-date=April 29, 2015|url-status=dead}}</ref> 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 (web 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]] 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]]. 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-created content|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]], for [[South Korean won|KRW]] 37.2 billion.{{citation needed|date=November 2022}}

=== SK Planet ===
[[SK Planet]] is the [[e-commerce]] division of SK headquartered in [[Pangyo, Seongnam|Pangyo]]. Business areas include [[Digital distribution|digital contents]], [[E-commerce|integrated commerce]] and [[Marketing communications|marketing communication]].

Its October 2011 launch marked the reorganization of '''T Store'''.<ref>{{cite web|url=http://www.skplanet.co.kr/eng|title=Inspiring everyone on the planet|publisher=SK Planet}}</ref> SK Planet launched {{notatypo|'''qiip'''}}, an app store in Japan.<ref>[http://news.inews24.com/php/news_view.php?g_serial=621015&g_menu=020310 SK플래닛, 앱스토어 '킵(qiip)'으로 일본시장 공략] (in Korean)</ref> '''11st''' is one of the biggest online store complexes in South Korea under the management of SK Planet.<ref>[http://www.11st.co.kr/commons/CommonAbout.tmall?method=corp1_1 11st Introduction]</ref> 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'''.<ref>{{Cite web |url=http://www.skplanet.com/eng/prroom/press_view.aspx?seq_num=195 |title=''SK Planet Set to Change the Dynamics of Offline Commerce Market Valued at KRW 230 Trillion'' |access-date=July 3, 2014 |archive-date=July 14, 2014 |archive-url=https://web.archive.org/web/20140714222915/http://www.skplanet.com/eng/prroom/press_view.aspx?seq_num=195 |url-status=dead }}</ref>

On November 14, 2014, SK Planet formed a joint venture with [[Celcom|Celcom Axiata Berhad]] of [[Malaysia]].<ref>{{cite web|url=https://www.bloomberg.com/research/stocks/private/snapshot.asp?privcapId=141536315|title=Celcom Axiata Bhd and SK Planet Form Joint Venture Company|publisher=Bloomberg}}</ref> The new e-commerce company is known as Celcom Planet Sdn. Bhd., its online outlet is called 11street Malaysia.{{citation needed|date=November 2022}}

=== SK Telink ===
{{Main|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.{{citation needed|date=November 2022}}

=== TU Media ===
{{Main|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.{{citation needed|date=November 2022}}

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.{{citation needed|date=November 2022}}

=== 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.<ref>{{Cite web |date=2021-10-12 |title=SK Telecom to spin off SK Square |url=https://koreajoongangdaily.joins.com/2021/10/12/business/tech/SK-Telecom-SK-Square-spinoff/20211012171518905.html |access-date=2022-11-11 |website=[[Korea JoongAng Daily]] |language=en}}</ref> SK Square is owned by SK Inc, at 30.01 percent, who are the largest shareholder. [[Dreamus|Dreamus Company]], formerly known as iriver Inc. became a subsidiary with SQ Square being the largest shareholder at 51.4 percent.<ref>{{Cite web |date=2022-08-17 |title=SK Square reports good Q2 results after spin-off last Nov. |url=https://koreajoongangdaily.joins.com/2022/08/17/business/industry/Korea-SK-Square-SK-hynix/20220817162048605.html |access-date=2022-11-11 |website=[[Korea JoongAng Daily]] |language=en}}</ref>

== SK Sports ==
SK is a major sponsor in domestic professional sports.<ref>{{cite web|title=SK Sports|url=https://www.sksports.net/sks_index.asp|publisher=sksports.net}}</ref> It also owns the esports team [[T1 (esports)|T1]], as part of a cooperation with [[Comcast Spectacor]].<ref>{{cite news|title=e스포츠팀 'T1' 아카데미, 프로게이머 키운다|url=https://www.donga.com/news/Economy/article/all/20211017/109751407/1|work=[[The Dong-a Ilbo]]|date=October 17, 2021|language=ko}}</ref>
* Baseball: SK Telecom previously owned SK Wyverns before it was sold to [[Shinsegae]], becoming [[SSG Landers]].
* Basketball: [[Seoul SK Knights]] ([[Korean Basketball League]])
* Fencing: SK has sponsored the Seoul Grand Prix of the [[Fencing World Cup]] circuit and the Korean Fencing Federation's national fencers since 2003.<ref>{{cite news|title='세계 최강' 한국 펜싱 뒤엔...'키다리 아저씨' 있었다|url=https://www.hankyung.com/sports/article/202107298174i|work=[[The Korea Economic Daily]]|date=September 29, 2021|language=ko}}</ref>
* Football: [[Jeju SK FC]] ([[K League 1]])
* Golf: SK sponsors the [[SK Telecom Open]] golf tournament and several golfers.
* Handball: SK is the main sponsor of the [[Handball Korea League]] and established the women's team [[SK Sugar Gliders]] and men's team [[SK Hawks]].
* Speed skating: SK sponsors the national short track speed skating team.<ref>{{cite news|title=SKT, 스피드스케이팅 9년간 후원 "쾌속 질주 도왔다"|url=https://news.sktelecom.com/175647|publisher=SK Telecom|date=February 23, 2022|language=ko}}</ref>

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.<ref>{{cite news|title=[경기 전] '통신사 라이벌' SK-KT, 리그 1~2위 자존심을 건 6번째 맞대결|url=https://basketkorea.com/news/newsview.php?ncode=1065595293425721|work=BasketKorea|date=April 3, 2022|language=ko}}</ref><ref>{{cite news|title=[롤챔스] SKT, '통신사 라이벌' kt에 역전승... 단독 2위 등극|url=http://news.kmib.co.kr/article/view.asp?arcid=0013144591&code=61162011&sid1=i|work=[[Kukmin Ilbo]]|date=March 14, 2019|language=ko}}</ref> 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]].<ref>{{cite news|title=SK-KT서 '우승 반지 키스'→'저니맨 포수'의 6번째 여행도 '해피엔딩'?|url=https://sports.v.daum.net/v/20220225034403777|publisher=[[Daum (web portal)|Daum News]]|date=February 25, 2022|language=ko}}</ref> 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.<ref>{{cite news|title=영원한 라이벌, SKT-KT 프로리그 우승컵 놓고 맞붙는다|url=https://www.hankyung.com/it/article/201407302232v|work=[[Korea Economic Daily]]|date=July 30, 2014|language=ko|access-date=April 3, 2022|archive-date=April 3, 2022|archive-url=https://web.archive.org/web/20220403184717/https://www.hankyung.com/it/article/201407302232v|url-status=dead}}</ref><ref>{{cite news|title='통신사 라이벌' SK-KT, 농구코트서 3일 첫 대결|url=https://news.sbs.co.kr/news/endPage.do?news_id=N1000814817|publisher=[[Seoul Broadcasting System]]|date=November 1, 2010|language=ko}}</ref>

== See also ==
{{Portal|South Korea|Companies}}
* [[Cyworld]]
* [[KT Corporation]]
* [[LG Uplus]]
* [[Rebellions (company)|Rebellions]] (merged with SK's subsidiary Sapeon Korea)
* [[SK Group]]
* [[SK Telecom T1]]
* [[SK Teletech]] (now merged with [[Pantech]] & Sky Electronics)
* [[TU Media]]

== References ==
{{Reflist|30em}}

== External links ==
{{Commons category|SK Telecom}}
* {{Official website|https://www.sktelecom.com}}
* [https://www.tworld.co.kr SK Telecom T world website]
* {{YouTube|user=TworldTV}}
* SK Telecom Americas website ([https://www.skta.com English])
{{Finance links
|name= SK Telecom
|google= 017670:KRX
|yahoo= 017670.KS
|bloomberg= 017670:KS
|reuters= 017670.KS
}}

{{SK Group}}
{{KT}}
{{Major telecommunications companies}}
{{Bridge Alliance}}
{{Mobile network operators of South Korea}}
{{KOSPI 200}}
{{DJSI World}}
{{Film distributors of South Korea}}
{{Telecommunications}}
{{Authority control}}

{{DEFAULTSORT:Sk Telecom}}
[[Category:SK Telecom| ]]
[[Category:Companies based in Seoul]]
[[Category:Companies listed on the Korea Exchange]]
[[Category:Companies listed on the New York Stock Exchange]]
[[Category:Companies in the KOSPI 200]]
[[Category:Mobile phone companies of South Korea]]
[[Category:SK Group subsidiaries|Telecom]]
[[Category:South Korean brands]]
[[Category:Telecommunications companies established in 1984]]
[[Category:1984 establishments in South Korea]]
[[Category:Telecommunications companies of South Korea]]
[[Category:Film distributors of South Korea]]