SK Telecom Co Ltd (SK Telecom) is a provider of integrated telecommunication services, including wireless telecommunications and fixed-line services. The company offers its services both on post-paid and prepaid basis. In FY2024, the company had 24.6 million wireless subscribers including MVNO subscribers.

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SK Telecom Co R&D arm focuses on the development of new wireless technologies and services, value-added technologies and services for their 5G and LTE networks, such as wireless data communications. The company is also developing new technologies that reflect the convergence between telecommunications and other industries, such as AI, big data analytics and media. The R&D units of the company include the Global Solution Technology Center, which is subdivided into Future R&D Group, Cloud R&D Group, Vision R&D Group, Open AIX R&D Group, Media R&D Group, and Global Solution Synergy Group. The Infrastructure Technology Group under the ICT Infrastructure Center also conducts related research and development activities. Each business unit has its own research team that focuses on specific short-term research needs. Some of the company's consolidated subsidiaries also have its own research and development organizations to focus on activities related to its respective business areas. In FY2024, the company incurred expenses of KRW378,079 million, which as a percentage of revenue, stood at 2.1%.