๐ถ eSIM, SIM cards and Pocket Wi-Fi in Korea
Reliable mobile data makes Korea far easier to navigate. It is nearly essential for maps, translation, taxi apps and restaurant reservations. You have three main choices: an eSIM, a physical SIM card, or a pocket Wi-Fi router.
Getting connected ยท Updated 2026-10-05 ยท 5 min read
eSIM: the easiest option if your phone supports it
An eSIM lets you buy a data plan online before your trip and activate it when you land. There is no queue and nothing to swap. Check that your phone is carrier-unlocked and supports eSIM before purchasing; most recent iPhones and many Android phones do.
Plans are typically sold by data amount and days, such as 5 GB for 7 days or unlimited daily data with a fair-use limit. Some plans use local networks and others roam through a partner, which can affect speed. Install the eSIM profile while you still have Wi-Fi, and switch on data roaming for that line only when you arrive.
Physical SIM cards
Travel SIM cards are sold at the arrivals hall of Incheon and Gimpo, and pre-ordered ones can be collected at airport counters. They are convenient for older phones, but you will need to swap the card and keep your home SIM safe.
Some cards include a Korean phone number for voice calls or verification codes; if you need that for delivery apps or booking services, check that your plan includes it.
Pocket Wi-Fi
A Wi-Fi router is worth considering for groups because several devices can share one connection. The trade-offs are carrying and charging another device and returning it before you depart, often at the airport.
Apps that work best in Korea
Google Maps has limited turn-by-turn navigation in Korea because of local map-data rules. Naver Map and Kakao Map give accurate transit routes, walking directions and real-time bus arrivals, and both have English interfaces. Papago is a strong Korean translation app, and Kakao T is the standard taxi app.
Download offline maps and translation packs before you arrive, and keep your phone charged. Many airport stations and cafes offer free Wi-Fi, but do not rely on public networks for banking.
Prices, schedules and entry rules change. The figures below are approximate and reflect information available when this guide was last reviewed; always confirm with the official source before you travel.