The country's three mobile carriers are facing even more penalties as they enter a 45-day government-ordered suspension of business on this Thursday.
The Korea Communications Commission says it will levy more than 30-billion won, or 28-million U.S. dollars, in fines on all three carriers for igniting unfair competition and overheating the market in January and February.
The KCC will also suspend leading mobile carrier SK Telecom and the number three player LG U-plus for seven and 14 days, respectively.
That's on top of the 45-day suspension issued by the ICT ministry -- on all three carriers for providing illegal subsidies to lure potential customers.
During the suspension, the companies are banned from signing up new customers.