# SK TELECOM CO LTD

Summary updated: 2026-10-02T12:35:10.581451Z
Canonical: https://finbar.com/research/companies/sk-telecom-co-ltd

## Overview

SK Telecom Co., Ltd. is a South Korean telecommunications and technology company. Its core business is mobile voice and data service, complemented by fixed-line communications, broadband, IPTV and cable TV; it also provides services including IoT, enterprise communications, cloud, AI and subscriptions. South Korea is its primary market, with international reach through roaming agreements with foreign operators. [1](https://app.finbar.com/go?id=P150990994)[2](https://app.finbar.com/go?id=P150991003)[3](https://app.finbar.com/go?id=P150991013)[4](https://app.finbar.com/go?id=P150991024)[5](https://app.finbar.com/go?id=P150991026)[6](https://app.finbar.com/go?id=P150991031)[7](https://app.finbar.com/go?id=P150991373)

For the year ended December 31, 2025, SK Telecom reported consolidated revenue of KRW 17.099 trillion; cellular services accounted for KRW 12.553 trillion. [8](https://app.finbar.com/go?id=P150992751)[9](https://app.finbar.com/go?id=P150990997) Its 2025 Sustainability Report lists 5,316 employees. [10](https://news.sktelecom.com/en/wp-content/uploads/pdfs/SK_Telecom_Sustainability_Report_2025_Eng_F_brief.pdf) The company traces its mobile communications operations to 1984. [11](https://www.sktelecom.com/en/view/introduce/history.do) Its stated vision focuses on connecting AI technology with values important to customers and bringing new energy to Korea. [12](https://www.sktelecom.com/en/view/introduce/intro.do)
[1](https://app.finbar.com/go?id=P150990994)[2](https://app.finbar.com/go?id=P150991003)[3](https://app.finbar.com/go?id=P150991013)[4](https://app.finbar.com/go?id=P150991024)[5](https://app.finbar.com/go?id=P150991026)[6](https://app.finbar.com/go?id=P150991031)[7](https://app.finbar.com/go?id=P150991373)[8](https://app.finbar.com/go?id=P150992751)[9](https://app.finbar.com/go?id=P150990997)[10](https://news.sktelecom.com/en/wp-content/uploads/pdfs/SK_Telecom_Sustainability_Report_2025_Eng_F_brief.pdf)[11](https://www.sktelecom.com/en/view/introduce/history.do)[12](https://www.sktelecom.com/en/view/introduce/intro.do)

## Products & services

SK Telecom’s consumer offerings include wireless voice and data services, 5G/LTE plans, devices and T Membership, which provides subscriber discounts, points, shopping and promotional benefits. Its 5GX plans include unlimited domestic voice, text and data options; the company also offers lower-priced plans with smaller data allowances and online-only “Direct” plans. SK Telecom describes its nationwide 5G network as supporting maximum transmission speeds of 2.75 Gbps and mMTC connections for IoT devices. [13](https://app.finbar.com/go?id=P150991040)[14](https://app.finbar.com/go?id=P150991049)[15](https://app.finbar.com/go?id=P150991050)[16](https://app.finbar.com/go?id=P150991072)

Its business AI portfolio includes generative AI, AI vision, AI contact-center, AI marketing, AI data and physical-AI offerings. A. Biz is an enterprise AI agent designed to assist with administrative work and functions such as legal, tax, public relations, purchasing and personnel management. GPU-as-a-Service gives enterprise customers on-demand access to GPU cloud resources; SK Telecom launched the service in 2025 and later introduced its Haein cluster, equipped with more than 1,000 NVIDIA B200 GPUs. [6](https://app.finbar.com/go?id=P150991031)[17](https://app.finbar.com/go?id=P150991033)

In media, SK Telecom offers AI B tv, which uses viewer identification and viewing history to personalize VOD recommendations, and B tv A. Service, which uses its A. language model for voice commands, content discovery and recommendations. SK Broadband’s services include broadband internet, IPTV and cable television, alongside fixed-line and international calling and interconnection services. [18](https://app.finbar.com/go?id=P150991097)[19](https://app.finbar.com/go?id=P150990759)[7](https://app.finbar.com/go?id=P150991373)
[13](https://app.finbar.com/go?id=P150991040)[14](https://app.finbar.com/go?id=P150991049)[15](https://app.finbar.com/go?id=P150991050)[16](https://app.finbar.com/go?id=P150991072)[6](https://app.finbar.com/go?id=P150991031)[17](https://app.finbar.com/go?id=P150991033)[18](https://app.finbar.com/go?id=P150991097)[19](https://app.finbar.com/go?id=P150990759)[7](https://app.finbar.com/go?id=P150991373)

## Geographic presence

SK Telecom’s operating footprint is centered in South Korea. At year-end 2025, its mobile network reached substantially all of the country’s population, and it reported 23.5 million mobile subscribers, including MVNO subscribers, equivalent to a 41.6% market share. The company also reported nationwide 5G coverage. [1](https://app.finbar.com/go?id=P150990994)[14](https://app.finbar.com/go?id=P150991049)

Its registered office and corporate headquarters are at SK T-Tower, 65 Eulji-ro, Jung-gu, Seoul. Listed regional facilities span the Seoul Metropolitan Area, Gyeongsang Provinces, Jeolla and Jeju Provinces, and Chungcheong Province. [20](https://app.finbar.com/go?id=P150991261)[21](https://app.finbar.com/go?id=T17333590)

The 2025 annual report does not give geographic revenue percentages or a country-by-country employee distribution. Its listed overseas subsidiaries and entities include operations or holdings in the United States, China, and the Cayman Islands, while the subsidiaries are predominantly based in Korea. [22](https://app.finbar.com/go?id=T17333836)[23](https://app.finbar.com/go?id=T17333839)
[1](https://app.finbar.com/go?id=P150990994)[14](https://app.finbar.com/go?id=P150991049)[20](https://app.finbar.com/go?id=P150991261)[21](https://app.finbar.com/go?id=T17333590)[22](https://app.finbar.com/go?id=T17333836)[23](https://app.finbar.com/go?id=T17333839)

## Business segments

SK Telecom reports three financial segments. Based on 2025 external revenue after intersegment eliminations, Cellular services accounted for approximately 73.4% (₩12,552.5 billion) of consolidated revenue. The segment covers wireless voice and data services, wireless-device sales, and related technology solutions and services. [24](https://app.finbar.com/go?id=P150992335)[1](https://app.finbar.com/go?id=P150990994)[25](https://app.finbar.com/go?id=P150991326)[26](https://app.finbar.com/go?id=T17334031)

Fixed-line telecommunication services contributed approximately 24.5% (₩4,191.1 billion) of 2025 external revenue. Its activities include broadband Internet, IPTV and cable TV, fixed-line telephone, international calling, and related interconnection and services. [27](https://app.finbar.com/go?id=P150991330)[26](https://app.finbar.com/go?id=T17334031)

The Others segment contributed approximately 2.1% (₩355.6 billion). The report describes SK Stoa’s T-commerce business as a principal remaining revenue source; it also notes that disposals of SK M&Service and NATE Communications reduced other revenue. [28](https://app.finbar.com/go?id=P150991336)[29](https://app.finbar.com/go?id=P150991122)[26](https://app.finbar.com/go?id=T17334031)
[24](https://app.finbar.com/go?id=P150992335)[1](https://app.finbar.com/go?id=P150990994)[25](https://app.finbar.com/go?id=P150991326)[26](https://app.finbar.com/go?id=T17334031)[27](https://app.finbar.com/go?id=P150991330)[28](https://app.finbar.com/go?id=P150991336)[29](https://app.finbar.com/go?id=P150991122)

## Company history

SK Telecom was founded on March 29, 1984, as Korea Mobile Telecommunications Services Co., Ltd., and began car-phone service that year. After the company was renamed Korea Mobile Telecommunications, SK Group acquired management control in 1994; it adopted the SK Telecom name in 1997. In 1996, it launched commercial CDMA digital mobile service, described by the company as the world’s first CDMA-based cellular service. [30](https://www.sktelecom.com/en/press/press_detail.do?idx=469) [11](https://www.sktelecom.com/en/view/introduce/history.do)

The company expanded through the 1999 acquisition and 2002 merger with Shinsegi Telecom, and launched CDMA2000 1x EV-DO service in 2002. It entered fixed broadband by acquiring Hanaro Telecom in 2008, later renamed SK Broadband. SK Telecom launched LTE in 2011 and LTE-Advanced in 2013, followed by an initial 5G network in 2018 and commercial 5G service in 2019. [31](https://www.sktelecom.com/en/press/press_detail.do?idx=88) [32](https://www.sktelecom.com/en/press/press_detail.do?idx=268) [33](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=366) [34](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=894) [35](https://www.sktelecom.com/en/press/press_detail.do?idx=963) [36](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=1036&keyword=NTT+docomo&type=all) [37](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=1367)

On November 1, 2021, SK Telecom completed a corporate split, transferring a portfolio of non-telecom investment businesses to the newly established SK Square. [38](https://app.finbar.com/go?id=P150990806)
[38](https://app.finbar.com/go?id=P150990806)[30](https://www.sktelecom.com/en/press/press_detail.do?idx=469)[11](https://www.sktelecom.com/en/view/introduce/history.do)[31](https://www.sktelecom.com/en/press/press_detail.do?idx=88)[32](https://www.sktelecom.com/en/press/press_detail.do?idx=268)[33](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=366)[34](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=894)[35](https://www.sktelecom.com/en/press/press_detail.do?idx=963)[36](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=1036&keyword=NTT+docomo&type=all)[37](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=1367)

## Sources

1. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150990994)
2. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991003)
3. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991013)
4. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991024)
5. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991026)
6. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991031)
7. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991373)
8. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150992751)
9. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150990997)
10. [news.sktelecom.com](https://news.sktelecom.com/en/wp-content/uploads/pdfs/SK_Telecom_Sustainability_Report_2025_Eng_F_brief.pdf)
11. [www.sktelecom.com](https://www.sktelecom.com/en/view/introduce/history.do)
12. [www.sktelecom.com](https://www.sktelecom.com/en/view/introduce/intro.do)
13. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991040)
14. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991049)
15. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991050)
16. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991072)
17. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991033)
18. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991097)
19. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150990759)
20. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991261)
21. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=T17333590)
22. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=T17333836)
23. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=T17333839)
24. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150992335)
25. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991326)
26. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=T17334031)
27. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991330)
28. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991336)
29. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150991122)
30. [www.sktelecom.com](https://www.sktelecom.com/en/press/press_detail.do?idx=469)
31. [www.sktelecom.com](https://www.sktelecom.com/en/press/press_detail.do?idx=88)
32. [www.sktelecom.com](https://www.sktelecom.com/en/press/press_detail.do?idx=268)
33. [www.sktelecom.com](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=366)
34. [www.sktelecom.com](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=894)
35. [www.sktelecom.com](https://www.sktelecom.com/en/press/press_detail.do?idx=963)
36. [www.sktelecom.com](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=1036&keyword=NTT+docomo&type=all)
37. [www.sktelecom.com](https://www.sktelecom.com/en/press/press_detail.do?currentPage=1&idx=1367)
38. [SK TELECOM CO LTD — Full financial report (2025 Y)](https://app.finbar.com/go?id=P150990806)

AI-generated summary; may contain errors. Not investment advice. Sign up to Finbar to view original document sources and access worldwide fundamental financial data and intelligence.