Korea SIM Card, eSIM and Pocket WiFi Guide: What to Know, Which to Choose, Where to Buy and How to Set It Up
Photo by Nathana Reboucas on Unsplash Updated April 2026 · 8 min read Every time a friend from abroad visits Seoul, the first message I get after they land is some version of: "I can't connect to anything, how do I get data?" I've received that message enough times that I finally decided to write it all down properly. I know how disorienting it is to arrive somewhere without data. I've been that person standing at a foreign airport, roaming charges ticking up, trying to figure out which SIM to buy from a rack of options I don't understand. It's not fun. Korea has excellent connectivity options for visitors — some of the best in the world, actually — but the choices can be confusing if you don't know what you're looking at. This guide covers everything: what to buy, where to buy it, how much it costs, and which option actually makes sense for your trip. In this guide What you need to know be...