eSIM and SIM Cards in Korea for Visitors and Expats
myeongdong.best editors
Visitors: buy a data eSIM before you fly or a prepaid SIM at the airport, and you are online the moment you land. Expats: you can use a prepaid plan at first, then switch to a monthly contract once you have your Alien Registration Card (ARC).
Short stay: four options
| Option | Phone number? | Where to get it | Good for |
|---|---|---|---|
| Data eSIM | Usually data only | Online before you fly | Most travellers with an eSIM-capable phone |
| Prepaid SIM | Often includes a Korean number | Airport telecom counters, some convenience and exchange shops | Booking restaurants, delivery apps, verification texts |
| Pocket Wi-Fi | No | Airport rental desks | Groups sharing one connection |
| Home roaming | Your own number | Your home carrier | Very short trips; check the price |
Tips for travellers
- Install and test your eSIM before departure, but switch it on after landing.
- A Korean number helps: many apps, taxi hailing and restaurant bookings send verification codes by text.
- Have your passport ready; prepaid SIM sellers register the line to it.
- Download Naver Map or KakaoMap: they work far better in Korea than global map apps.
Living here: getting a proper plan
Most monthly contracts with the big carriers need an Alien Registration Card (ARC). Until yours arrives, use a prepaid plan; budget carriers (MVNOs) offer cheaper monthly data plans once you are registered. Home internet usually needs an ARC and a Korean bank account.
FAQ
Do I need a Korean phone number?
Not strictly, but it makes life easier: many Korean apps and bookings send verification texts to a local number.
Can I buy a SIM card at Incheon Airport?
Yes. Telecom counters in the arrivals area sell prepaid SIMs and rent pocket Wi-Fi.
Can foreigners get a monthly phone contract?
Usually after you receive your Alien Registration Card. Before that, use a prepaid plan.