Getting a SIM Card & Phone Number in Korea: Foreigner Guide
A Korean phone number is the first thing to sort out after landing — you need it for bank accounts, deliveries, apps, and almost every signup in Korea. The good news: getting a SIM as a foreigner is straightforward once you know the three plan types and which documents each one needs. Here's the practical version.
Why you need a Korean number (not just roaming)
Roaming or an eSIM from home keeps you online, but most Korean services require a local number that can receive verification texts registered to your identity: bank apps, KakaoTalk features, food delivery, government sites, and rental or housing contracts. Sorting out a real Korean SIM early makes everything after it easier.The three plan types
- Prepaid SIM — pay first, no contract. Easiest to get right after arrival (often with just a passport). Good as a bridge for your first weeks.
- Postpaid plan (major carriers) — SK Telecom, KT, LG U+. Full service and best coverage support, but usually requires an ARC (Alien Registration Card) and sometimes a Korean bank account or card for auto-payment.
- MVNO / budget plans (알뜰폰) — smaller providers that rent the big carriers' networks. Same coverage, often much cheaper monthly fees, and many can be ordered online. Most also require an ARC.
What documents you need
- Prepaid: usually your passport is enough.
- Postpaid / MVNO: usually your ARC; some providers also ask for a Korean bank account or card for auto-payment.
Where to buy
- Airport counters (Incheon/Gimpo) — prepaid SIMs and tourist plans right after landing.
- Convenience stores — some chains sell prepaid SIM kits you activate online.
- Carrier & MVNO shops — in every neighborhood; bring your documents.
- Online — many MVNOs let you order a SIM or eSIM online with ARC verification and have it delivered.
Tips that save headaches
- Keep your number stable — many services tie your account to your phone number, so avoid changing it often.
- eSIM — increasingly supported; handy if your phone is dual-SIM and you want to keep your home number active.
- Check your phone is unlocked before arrival.
- Contract phones vs SIM-only — buying a device on installment usually needs an ARC and a longer commitment; SIM-only plans keep you flexible.
Next step after your phone works: set up your home
Once you have a Korean number, the next two setup tasks are usually home internet and furnishing your place. For appliances and furniture, most people in Korea rent monthly instead of buying — fridges, washing machines, water purifiers, beds and more, with installation included and no big upfront cost. SETKORA lets you browse and apply in 13 languages, and we handle the Korean-language side for you.Frequently asked questions
Can I get a Korean SIM card without an ARC?
Yes — prepaid SIMs can generally be activated with just a passport. Postpaid and most budget MVNO plans require an ARC, so many people use prepaid until their ARC is issued.
Are budget (알뜰폰/MVNO) plans really the same network?
Yes. MVNOs rent the networks of the three major carriers, so coverage is the same — the difference is price and customer-service channels (often online-first).
Do I need a Korean phone number to rent appliances?
Practically yes — providers confirm your rental application and installation schedule by phone. Any working Korean number (prepaid included) is fine to start.
SETKORA is a rental brokerage (통신판매중개자), not the contracting party. Prices assume a contract term and, where noted, card-spending conditions; final terms are confirmed during consultation.