Kimchi Korea SIM Card for Foreigners: eSIM, Number & Plans
Any foreigner can use a phone in Korea, but what you can get depends on how long you stay. Anyone, tourist or resident, can buy a data eSIM on a passport and have it working the moment they land. A real Korean 010 number is different: it needs your physical Alien Registration Card (외국인등록증, ARC) and a long-stay visa, and it is issued only when you convert to a KT postpaid plan. So short-term visitors use a data eSIM; long-stay residents start on data, then add a number once their ARC arrives. This guide maps every path, in the order it actually happens.
Last updated: June 2026. This is general information, not legal, immigration, or banking advice. Confirm your own case with immigration (HiKorea / the 1345 helpline) and your carrier.
Which Korea SIM is right for you?
Match the SIM to your stay. If you are visiting for under 90 days, a data eSIM is the option you have and usually all you need. If you are moving to Korea on a long-stay visa, you start on data and add a real Korean number after your ARC comes through. Korea is a heavily connected country with over 2.6 million foreign residents as of the end of 2024, so the paths below are well worn.[1]
| You are | What to get | Korean 010 number? | What you need |
|---|---|---|---|
| Tourist / under 90 days | Data eSIM | No | Passport, an eSIM-capable phone |
| Long-stay newcomer (pre-ARC) | Data eSIM now, bridge to postpaid later | Yes, after ARC | Passport now; physical ARC + bank later |
| Settled resident | KT postpaid, then MVNO to save | Yes | Physical ARC + Korean bank/card |
If you are still deciding whether you need a local SIM at all, our guide on whether you need a SIM card in Korea and the eSIM versus physical SIM breakdown cover the trade-offs. The rest of this page follows the order most foreigners actually go through.
Can foreigners get a Korean phone number (010)?
Not on arrival, and not on a passport. On landing you get mobile data only. A Korean 010 number requires your physical ARC plus a qualifying long-stay visa, and it is issued when you convert to a KT postpaid (후불) plan, which is typically a few weeks after you register.
This order is fixed because of Korea’s real-name rule for mobile lines. Every Korean number is tied to a verified identity, and for a foreigner that proof is the ARC and its foreigner registration number (외국인등록번호). The Ministry of Science and ICT (MSIT, 과학기술정보통신부) oversees mobile subscription and identity-verification policy, so no carrier can put a line in your name before that card exists. Plenty of older guides still describe a passport-and-go Korean number; that model is gone. A data eSIM covers your first weeks completely, and our pillar on how to get a Korean phone number as a foreigner walks both paths in detail.
Which visas qualify for a Korean number?
A Korean 010 line is for long-stay residents. Qualifying categories generally include the F-series (such as F-2, F-4, F-5, F-6), work visas in the E-series (E-1, E-2, E-5, E-7, E-9), and long-stay D-series visas such as the D-2 student visa and the D-10 job-seeker visa. Short-term, tourist, and visa-waiver visitors cannot get a Korean number and should stay on a data eSIM. Category rules change, so if you are not sure your visa qualifies, ask before you buy rather than assuming.
The data eSIM: what tourists and new arrivals start with
A data eSIM runs on your passport, carries no Korean number, and activates the moment you land and power on. It is the only option for visitors and the right first step for residents waiting on an ARC. SK Telecom, for example, lets foreigners sign up for prepaid service on an unexpired passport, with one prepaid line per foreign resident.[2]
Because it needs no ARC, you can buy a data eSIM before you fly, load the QR by email, and have data the second you switch your phone on at Incheon. It covers maps, search, translation, ride-hailing, and any messaging app that runs over data. For the buy-before-you-land walkthrough see getting your Korea eSIM before arrival, and if you would rather decide on the spot, buying a SIM at Incheon Airport versus online compares the counter price with ordering ahead.
How to get a real Korean 010 number: the ARC-to-postpaid bridge
You convert to a KT postpaid (후불) plan once your physical ARC is in hand, and the 010 number is issued at that conversion. Postpaid is the contract-style plan billed monthly to a Korean payment method in your name; prepaid (선불) data does not carry a verified number.
The cleanest route for a long-stay arrival is a bridge SIM that does data now and postpaid later on one product, so you are not buying twice. Both of Kimchi’s bridge plans start as a 60-day, 60GB data eSIM on the KT network and convert to a 12-month KT postpaid plan within 60 days, once your physical ARC and a Korean bank account or card are ready. The number lands at conversion, not before.
| Bridge plan | On arrival | Real 010 number? | If you never convert | Built for |
|---|---|---|---|---|
| Kimchi Welcome SIM | 60-day 60GB data eSIM | Yes, after ARC | $50 non-conversion charge | Korvia teachers only (came to Korea via Korvia) |
| Korea Starter SIM | 60-day 60GB data eSIM | Yes, after ARC | $30 non-conversion charge | Standard option — anyone, 12+ month stays |
Coming September 2026: direct KT postpaid activation. If you already hold your physical ARC, you will soon be able to activate a KT postpaid line directly, with no prepaid step. Because the line is registered to your ARC, you can also port an existing Korean number to it (번호이동), and a 12-month contract comes with a rate discount (약정할인). This direct option is planned to launch from September 2026; until then, the bridge plans above are the route for new arrivals.
Open a Korean bank account or set up a Korean card before you convert, because a postpaid line bills monthly to a payment method in your name. The full mechanics are in our guide on switching from prepaid to postpaid in Korea. Because the postpaid side is a 12-month commitment, each bridge carries a charge if you take the data and never convert, so choose one only if you intend to stay and finish the switch.
How long does the ARC take, and why does it gate everything?
Plan for roughly two to four weeks from arrival to the physical card in hand, and longer in busy seasons. Anyone staying in Korea more than 90 days must register as a foreign resident, and that card is what lets you open a phone line in your name, a bank account, and most identity-verified services.
If you are staying over 90 days you are required to complete alien registration at your local immigration office, generally within 90 days of entry. The Korea Immigration Service, under the Ministry of Justice, handles this through the HiKorea portal; book early, because appointment slots fill up. After your appointment the physical card is produced and then collected or mailed, so the total time from landing to card-in-hand commonly runs a few weeks. One trap worth naming: the registration-fact certificate (외국인등록사실확인서), the paper that proves your registration is in progress, is not accepted to activate a Korean line. Plan on the physical ARC card, and carry it to any activation step.
Cutting the bill later: MVNO (알뜰폰) and keeping your number
Once you are fully settled, with your ARC and a working KT postpaid number, you can switch to an MVNO (알뜰폰) to lower the monthly bill, and you keep your 010 number when you move. MVNOs make the most sense as a second step, not your first SIM.
알뜰폰 operators resell the three network owners, KT, SK Telecom (SKT), and LG U+, and pass on cheaper rates because they carry no network-build cost.[3] Korea’s government-backed comparison hub, 알뜰폰Hub (mvnohub.kr), lists current plans across operators; budget SIM-only plans run well below the major carriers’ foreigner plans, though exact prices shift with promotions, so check the hub for live rates. The catch is English: most 알뜰폰 sign-up flows, apps, and support assume Korean fluency, where the carriers’ foreigner-focused plans are built to onboard non-Korean speakers. Our guide to Korea MVNOs for foreigners covers the carrier-versus-budget choice, and SIM and phone plans for long-term expats sets the whole sequence in order.
You keep your number through Korean number portability (번호이동), under which the subscriber keeps the previous number despite changing operator; it is managed by the Korea Telecommunications Operators Association (KTOA).[4] One thing to weigh before you move: if you took a KT contract discount (약정할인, up to 25% off the monthly fee) and cancel or break the contract early, KT may reclaim part of that discount as a 할인반환금 (early-termination charge), per KT’s own terms.[5] That charge is from the carrier, not from your SIM seller.
| Option | Korean number? | Monthly cost | English support | Best for |
|---|---|---|---|---|
| Data eSIM (prepaid data) | No | Paid upfront per plan | Yes | Visitors, new arrivals pre-ARC |
| KT postpaid (후불), foreigner-focused | Yes, after ARC | Higher | Yes | Your first verified number |
| MVNO / 알뜰폰 | Yes, after ARC | Lower | Usually not | Settled residents cutting cost |
Will my phone work in Korea? eSIM versus USIM
Most phones from the last several years work fine; the question is whether yours takes an eSIM or needs a physical USIM. Apple supports eSIM on iPhone XS, XS Max, XR, and later.[6] Samsung supports eSIM on the Galaxy S20 series and newer, plus the Z Fold and Z Flip line.[7]
One caveat that catches foreigners who bought a phone abroad: Samsung notes eSIM support can be region-dependent, so a listed model from another country may still not accept an eSIM in Korea. If your phone is eSIM-capable, an eSIM is the fastest route; if not, a physical USIM does the same job. The full device list and the differences are in eSIM versus SIM card in Korea.
SIM by visa and situation
The sequence is the same for everyone, but the starting point differs by who you are.
- Students (D-2): data eSIM on arrival, then a number after your ARC. A D-2 staying over a year follows the full resident path; see Korea SIM and eSIM for international students.
- Teachers (E-2) and EPIK: the bridge-SIM route fits a one-year contract cleanly. Schools and programs onboarding a group can use our EPIK program SIM for bulk setup.
- Job seekers (D-10): a long-stay D-series visa qualifies for a number once your ARC is issued; data eSIM until then.
- Families (F-series): each person needs their own ARC-linked line; dependents register individually.
Do I actually need a Korean number?
For staying in touch, often no. KakaoTalk, Korea’s main messenger, registers on a mobile number from any country and works on your existing foreign number.[8] Where a Korean 010 number becomes necessary is the verified-identity layer: Korean banks, fintech apps like Toss (토스) and KakaoBank, and government services run an identity check (본인확인) that expects a Korean line registered to your name and linked to your ARC.
So the honest split is this. A data eSIM plus your home number covers messaging, navigation, and daily life. A verified Korean number is what opens Korean banking, fintech, and 정부24-style government services, and that is the real reason long-stay residents move from data to a postpaid line.
Verify it yourself (official sources)
Telecom and immigration rules change, so check the primary sources before decisions that depend on them. For alien registration, the 90-day rule, and appointments, use the Korea Immigration Service via the HiKorea portal; the Foreigner Information Center answers on 1345 inside Korea. For mobile subscription and identity-verification policy, the Ministry of Science and ICT (MSIT) is the regulator. For budget plans and number portability, see 알뜰폰Hub and KTOA. Your carrier can confirm which documents it accepts for your specific visa.
Frequently asked questions
Can a tourist get a SIM card in Korea?
Yes. A tourist can buy a data eSIM on a passport, with no ARC and no Korean number, and it activates when you land and power on. You cannot get a Korean 010 number as a tourist or visa-waiver visitor; a data eSIM is the right and only option for short stays.
Can foreigners get a Korean phone number without an ARC?
No. A Korean 010 number requires your physical Alien Registration Card and a qualifying long-stay visa, and it is issued when you convert to a KT postpaid plan. Until your physical ARC is in hand, use a data eSIM. The registration-fact certificate (외국인등록사실확인서) is not accepted to activate a line.
Do I need a Korean SIM for KakaoTalk?
No. KakaoTalk registers on a mobile number from any country, so it works on your existing foreign number. You need a Korean 010 number for Korean banking, fintech, and government identity verification (본인확인), not for KakaoTalk itself.
eSIM or physical SIM in Korea, which should I get?
Use an eSIM if your phone supports it, an iPhone XS or later or a Galaxy S20 or later, because it activates instantly with no shipping. If your phone is not eSIM-capable, or was bought in a region where eSIM is disabled, a physical USIM does the same job. Check your device before you buy.
How much does a SIM or plan cost for foreigners in Korea?
A data eSIM is paid upfront per plan. A foreigner-focused KT postpaid plan costs more but includes English onboarding and your verified number. MVNO (알뜰폰) plans are cheaper once you are settled, though exact prices change with promotions, so check 알뜰폰Hub (mvnohub.kr) for current rates.
Can I keep my Korean number if I change carriers or switch to an MVNO?
Yes. Korea supports number portability (번호이동), so you carry your existing 010 number to a new carrier or an 알뜰폰 plan. If you are still inside a 12-month contract with a discount, check whether an early-termination charge (할인반환금) applies before you move.
Which SIM is best for an EPIK teacher or long-stay arrival?
Start on a data eSIM, then convert to a KT postpaid number once your physical ARC arrives, which a bridge SIM does on one product. A one-year E-2 or EPIK contract fits the 12-month bridge cleanly; if you are unsure your visa qualifies, ask before you buy.
Getting your Korean SIM in the right order
The whole thing is simpler once you treat it as a sequence instead of one decision. Data is instant and for everyone; a verified Korean number is a later step that belongs to long-stay residents with an ARC; a budget 알뜰폰 plan is a third move you make only after everything is settled. Match each stage to what you actually need and you skip the new-arrival mistakes that cost time and money.
Just visiting? A data eSIM is all you need. Moving to Korea long term on an F, E, or D visa? Start on data with a bridge plan like the Korea Starter SIM, then convert to KT postpaid once your ARC and Korean bank account are ready, so your 010 number lands at the right time. If you are not sure which plan fits your visa, ask before you buy.