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How to get a Korean phone number as a foreigner
Almost everything in Korea quietly depends on one thing: a real-name Korean phone number. Coupang checkout, banking OTPs, the PASS identity app, even KakaoTalk verification all check it. Here’s the path foreigners actually take — from your first day with no ARC, to a proper plan, to saving money later.
The one rule: everything is real-name registered
Korean law ties every SIM to a real identity (명의). The line must be registered under your own name, matching your passport or ARC exactly. That’s why a number borrowed from a friend, or a random tourist eSIM, often fails the verification steps that matter — and why the steps below follow your paperwork, not just your arrival.
Stage 1 — Day one, before your ARC
You can’t get a postpaid plan without an ARC, but you can get a working number immediately:
- Pick up a 30-day prepaid tourist SIM at the airport (roughly ₩33,000–60,000). With your passport, this gives you a real Korean 010 number from day one.
- That number matters early: you’ll need it to book your ARC appointment and register your accommodation.
- Going long-term? Be careful with travel eSIMs — many give you data but no Korean number. Great for tourists, not enough for settling in.
Stage 2 — After your ARC arrives (~week 2–4)
Once you have your ARC and a Korean bank account, you can move to a real plan — a Big 3 carrier (SKT, KT, LG U+) or an MVNO. Go to a carrier store with:
- Your ARC and passport
- Your Korean bank account details
Ask to keep your existing 010 number (번호이동 / 번호유지) so you don’t have to re-register it everywhere. The switch takes about 20–30 minutes in-store and is what finally unlocks banking OTPs and the PASS app — the keys to smooth Coupang, banking and sign-ups.
Stage 3 — Save money with 알뜰폰 (once you’re settled)
After a few months, when you’re comfortable with the apps, switch to an MVNO (알뜰폰). These resell the exact same SKT / KT / LG U+ networks at 50–70% lower monthly cost than the carriers’ foreigner plans — same coverage, smaller bill. Korea’s government-backed comparison hub, 알뜰폰Hub (mvnohub.kr), lists current SIM-only plans across operators so you can compare before switching.
One known gotcha: the PASS app and your name
As of mid-2026, the PASS identity app still struggles with foreign names that contain hyphens, apostrophes, or special characters. If your verification fails for that reason, it’s not you — call your carrier and ask for manual real-name verification (실명 수동 확인). It’s a known issue with a workaround.