SK Telecom announced on Saturday that it has switched on its commercial 5G network, marking the occasion with a call from CEO Park Jung-ho in Bundang to Myeondong, using a Samsung 5G smartphone prototype. SK Telecom's 5G network currently covers main areas of 13 cities and counties nationwide. Mischievously, we would like to think the call went something like "Hello, can anyone hear me? There's no-one there…" That's the problem with launching a brand new network technology – penetration levels are somewhat low. Actually, that first call over its commercial 5G network was made between CEO Park located in Bundang, Gyeonggi-do and SK Telecom Manager Park Sook-hee located in Myeongdong, Seoul.