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 15 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.