KT Corp. said it is offering its 10 GiGA WiFi service, the world’s fastest mobile Internet, at three coffee shops of Starbucks in Seoul.

KT’s 10 GiGA WiFi service is available in Jongno Tower, Starfield Coex Mall and Gangnam Kyobo Tower. It provides the maximum speed of 4.8 Gbps.

The new WiFi service in Starbucks’ shops is the latest step in preparing for the commercial use of next-generation wireless technology. KT launched a new in-venue WiFi service during the Winter Olympics in Pyeongchang earlier this year.

“KT has introduced an outstanding 10 GiGA Internet infrastructure and next-generation WiFi technology in partnership with Starbucks,” said Park Hyun-Jin, head of KT’s Marketing Group.

KT said 10 GiGA WiFi is the world’s first commercial technology based on the Institute of Electrical and Electronic Engineers (IEEE)’ new standard of WiFi, 802.11ax, and KT’s 10 Gbps internet  infrastructure.

KT used two technologies: the orthogonal frequency division multiplexing access (OFDMA) and multi-user multi-input multi-output (MU-MIMO) launch 10 GiGA WiFi in South Korea. KT said its innovation has assisted the company to improve the speed of wireless service twice to four times.

Korea’s #1 mobile carrier has improved WiFi service by replacing the 1 Gbps Internet connection speed with 10 GiGA network.

It provides the maximum speed of 4.8 Gbps, almost three times that of the previous standard of 802.11ac with 1.7Gbps, the speed of the wireless local area network (WLAN).

KT is planning to improve the security of 10 GiGA WiFi. Customers will need to type ID and password to select a WLAN from the WiFi list.