South Korean telecommunications bodies have confirmed that the number of people who use 5G in the country has grown to over 1 million. This figure is based on the volume of relevant phone plans sold by the carriers that have deployed this new mobile data standard in the country. The government also plans to improve 5G infrastructure in the future.
https://www.notebookcheck.net/5G-networks-gain-over-1-million-users-in-South-Korea.423804.0.html