KOrean Statistical Information Service

data koreadata breach. (Yonhap). Nearly three years before South Korea's largest telecom provider knew anything was wrong, hackers had already brokenKorean eSim. Pros. Cons. No need to insert any physical SIM card into your phone. Can drain your phone battery the more you use your data. Can easily top up data if you run out. Much cheaper than roaming. Comes with a local phone