Overview
Getting around Korea smoothly — pulling up directions on Naver Map, hailing a ride with Kakao T, translating on the fly with AI, or paying with your phone — all comes down to one thing: a stable data connection. Korea’s three major carriers, SK Telecom (SKT), KT, and LG U+, each offer a range of prepaid eSIM plans built for foreign travelers and overseas Koreans.
All three deliver excellent 5G/LTE performance, but the details vary more than you’d expect — coverage areas, whether voice calls are included, passport verification (eKYC) methods, and how the plans themselves are structured. Here’s a clear, expert breakdown of what sets each carrier apart, along with answers to the questions travelers ask most.