KT

KT was founded in 1981 with the values of improving the convenience of the people and enhancing public welfare under the plan that separated and transferred the works under the telecommunications sector from the Ministry of Communications (now the Ministry of Information and Communication) to a public corporation to efficiently manage the telecommunications business.

SK Telecom

SK Telecom was founded with the intention of becoming a company that leads the mobile lifestyle through innovative value creation.

LG U+

In January 2009, LG U+ was established as a new comprehensive wired and wireless telecommunications company by merging three LG telecommunications companies, namely LG Telecom, LG Dacom, and LG Powercom, in order to actively respond to the changing environment of the convergence of wired and wireless telecommunications and telecommunications and broadcasting and to enhance its business competitiveness.

SK Broadband

From the world's first commercialization of ADSL to the rise of the country's first high-speed wireless internet service, SK Broadband has made significant contributions to make Korea an IT powerhouse today.

SK Telink

With the vision of becoming a total customized service provider in the wired and wireless communications and solutions sectors, SK Telink provides high value-added communication services and total solutions that integrate voice and data to meet needs of diverse communication customers.

SEJONG Telecom

SEJONG Telecom is creating new value in the telecommunications market by actively promoting future growth projects in line with the rapidly changing telecommunications market.

Dreamline

Dreamline is a communication line service provider based on a stable backbone network consisting of 50% optical fiber cables under the nation's highways, providing the most stable and economical telecommunications network in Korea.

IDIS Powertel

IDIS Powertel is a nationwide wireless telecommunications provider that provides mobile communication services that simultaneously provide nationwide radio calls and mobile phone services with one device.

Samsung SDS

Established in 1985, Samsung SDS has been leading the ICT service market and growing with its customers based on core talents with knowledge and skills accumulated through numerous business experiences.

Korea Cable Telecom

Korea Cable Telecom was founded in August 2006 by cable broadcasters to provide telephone services such as internet telephony to cable broadcasting + high-speed internet.