010PAY is an online top-up service built only for prepaid phones and prepaid SIMs in Korea. It covers SKT and KT prepaid lines plus around 30 MVNO prepaid carriers, whether you are on pay-as-you-go or a monthly prepaid plan. There is no sign-up. You type in the phone number, we look up the carrier, and the recharge goes through in one go, in real time, 24 hours a day, 365 days a year. The service is run by QQTrade Co., Ltd., an MVNO technology company that has operated it since 2013 and has processed more than 100 million top-ups.
