How to Get a Korean Phone Number as a Foreigner

When you land in Korea, you get mobile data, not a Korean phone number. A real Korean number (the 010 line you put into KakaoTalk, your bank, and the PASS app) is issued only after you hold your physical Alien Registration Card (외국인등록증, ARC) and you are on a long-stay visa. The card itself usually takes a few weeks after arrival, sometimes longer. So short-term visitors and tourists do not get a Korean number at all; they use a data eSIM. Long-stay residents start on data too, then get their number once the card comes through. This guide walks through both paths: who qualifies, and the order things actually happen in.

Data eSIM vs a real Korean number: what’s the difference?

A data eSIM gives you internet only, with no Korean number, and anyone can buy one on a passport. A real Korean number is a 010 line registered in your own name, and it requires your physical ARC plus a long-stay visa. The two solve different problems, and most of the confusion online comes from blurring them.

A data eSIM handles internet: maps, search, translation, ride-hailing, and any messaging app that runs over data. It carries no phone number, makes no calls or SMS to a Korean number, and needs no passport copy. You add it before you fly, and it activates when you land and power on. That covers everyone in the early days, whether you are a tourist, a business traveller, a visa-waiver visitor, or a long-stay arrival in your first weeks.

A Korean 010 number is different. It is a line in your name that passes Korea’s identity-verification check (본인확인), and it is the one Korean banks, fintech apps, and government services actually accept. That line needs the physical ARC and a qualifying long-term visa, neither of which a new arrival has on day one.

So the rule is short: data is instant and for everyone; a number is later and only for long-stay residents. If your stay is short, a data eSIM is the whole answer, and you can skip the visa sections below.

Who can get a Korean phone number?

You can get a Korean number once you hold a long-term residence visa and your physical ARC. Short-term, tourist, and visa-waiver visitors cannot get a Korean number and should use a data eSIM instead.

Korea applies a real-name, identity-verified rule to mobile lines. To open a number in your name you have to prove who you are, and for foreigners that proof is the ARC, which carries your foreigner registration number (외국인등록번호). No ARC means no line in your name, which is why the visa and the card matter more than the carrier you pick.

Long-stay categories that generally qualify include the F-series (such as F-2, F-4, F-5, and F-6), work visas in the E-series (E-1, E-2, E-5, E-7, and E-9), and long-stay D-series visas such as the D-2 student visa and the D-10 job-seeker visa. These are the people who register for an ARC in the first place. Rules and category names do change, so if you are not sure your visa qualifies, confirm with the carrier or with immigration before you commit to a plan.

Eligibility at a glance

Every long-stay row follows the same pattern: data first, number after the card. If you are unsure where your visa lands, ask before you buy rather than guess.

How long does the ARC take, and why does it gate everything?

Plan for a few weeks from arrival to having the physical ARC in hand, and often longer in busy seasons. Anyone staying in Korea more than 90 days has to 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.

Two separate clocks run here, and people tend to conflate them. The first is the registration deadline. If you are staying over 90 days, you are required to complete alien registration, generally within 90 days of entry, at your local immigration office. The Korea Immigration Service, under the Ministry of Justice, handles this. Apply early rather than waiting until the last week, because appointment slots fill up.

The second is the issuance wait. After your appointment, the physical card is produced and mailed (or picked up) within several business days. The real bottleneck is getting an appointment and being processed, so the total time from landing to card-in-hand commonly runs two to four weeks or more, depending on the office and the time of year.

One trap worth naming: a mobile or digital version of the registration certificate exists, and Korea has been rolling out a digital ARC. For opening a Korean number through a bridge-to-postpaid product, plan on the physical card. The registration-fact certificate (외국인등록사실확인서), the paper that proves your registration is in progress, is not enough on its own to activate the line. When in doubt, carry the physical ARC to any activation step.

Step by step: from landing to a Korean 010 number

The reliable path runs in four steps: land on data, register for your ARC, open a Korean bank account, then convert to a postpaid (후불) plan that issues your 010 number. Here is the order most long-stay foreigners follow.

1. Before you fly: add a data eSIM

Buy a data eSIM and load the QR before departure so you have internet the moment you land. This covers your first weeks while the ARC is in process. For a settling-in trip a small plan is plenty; our 5GB Korea data eSIM or 10GB Korea data eSIM handles maps, messaging, and rideshare without overpaying. For the full setup walkthrough, see our Korea eSIM activation guide.

2. Register for your ARC

Book your immigration appointment early and complete alien registration within the 90-day window. Bring your passport, visa documents, a photo, and your proof of address. Then wait for the physical card.

3. Open a Korean bank account

Once your ARC arrives, open a Korean bank account or set up a Korean card. A postpaid line is billed monthly to a Korean payment method in your name, so this step has to come before the number.

4. Convert to a postpaid plan and get your number

With the physical ARC and a Korean bank account or card, you switch from data to a monthly KT postpaid plan, and your Korean 010 number is issued at that conversion. If you arrived on a long-stay visa and want to skip buying two separate products, a bridge SIM is built for exactly this sequence: data now, postpaid later. Our Kimchi Welcome SIM and Korea Starter SIM both start as a 60-day data eSIM and convert to a 12-month KT postpaid plan within 60 days, once your ARC and Korean bank account or card are ready. The number lands at that conversion, not before.

Prepaid vs postpaid, and where do MVNOs (알뜰폰) fit?

Postpaid (후불) is the monthly, contract-style plan that carries a real 010 number in your name; prepaid (선불) is pay-as-you-go. MVNOs, known in Korea as 알뜰폰 (“budget phone”), are smaller carriers that resell the big three networks more cheaply. For a foreigner, the deciding factor is not prepaid versus postpaid in the abstract. It is whether the line is registered to your own name on your own ARC.

Korea’s mobile market runs on three network owners: KT, SK Telecom (SKT), and LG U+. The 알뜰폰 operators lease capacity from those three and pass on lower prices. They can be a good long-term saving once you are settled, but most still need your ARC to set up a line in your name, and their English support is thinner. For your first line as a newcomer, a foreigner-focused plan on a major network is usually the smoother path.

In short, a tourist never needs postpaid or an MVNO. A long-stay resident usually wants postpaid first for the verified number, then can shop 알뜰폰 later to cut the monthly cost once everything is set up.

What can you actually do without a Korean number?

With a data eSIM you can do almost everything a traveller needs: maps, search, translation, ride-hailing, and any messaging that runs over data. What you cannot do is pass the Korean identity check that local banks, fintech, and government apps demand, because that check wants a line in your own name.

KakaoTalk is the usual first surprise. You can install it and chat over data, and many people register it with a foreign number, but the Korean-specific features tied to identity verification expect a local line. Banking and fintech are where the wall is firmest: opening an account on Toss (토스), KakaoBank, or a traditional bank, and verifying it, generally needs your ARC and a Korean number in your name, and a data eSIM has no number to give. The PASS app and the broader 본인확인 check sit behind all of that, confirming your identity for banking, fintech, and many sign-ups; it expects a postpaid Korean line registered to you, and a passport-only prepaid number, even one that can technically call and text, usually does not satisfy it. Government services (정부24) and the big delivery apps (배달의민족, 요기요) lean on the same verified-number requirement, so they typically wait until you have your own line.

This is the practical reason the ARC and a proper number matter for long-stay life. Not for calls, but because they are the keys to the verified-identity layer that runs Korean banking and government services.

Common mistakes foreigners make

Most phone-number headaches in Korea come from expecting a number too early, or from assuming a working SIM equals a verified line. A few patterns repeat.

Expecting a Korean number the day you land

On arrival you get data, not a number. Build your first weeks around a data eSIM and treat the 010 number as something that arrives later, after the ARC and a bank account. Planning it the other way around leads to a frustrating week of failed app sign-ups.

Thinking the registration-fact certificate is enough

The 외국인등록사실확인서 proves your registration is underway, but for opening a number through a bridge product you generally need the physical ARC card. Wait for the card rather than trying to activate on the certificate alone.

Assuming any working SIM passes identity verification

A passport-based prepaid number can sometimes make calls, but that is not the same as a line that passes 본인확인. Banks and the PASS app want the line in your own name on your own ARC, so a tourist SIM will not get you in.

Buying an MVNO plan on day one

알뜰폰 carriers are great for saving money later, but most still need your ARC and offer limited English support. For your very first line, a foreigner-focused plan on a major network is usually less painful.

Verify it yourself (official sources)

Last updated: June 2026. Telecom and immigration rules change, so check the primary sources before you make decisions that depend on them. For immigration and the ARC, the Korea Immigration Service and the HiKorea portal cover alien registration, the 90-day rule, and appointments. For mobile identity verification, the Ministry of Science and ICT (MSIT, 과학기술정보통신부) oversees mobile subscription and identity-verification policy in Korea.

If your case is unusual, the Foreigner Information Center can be reached at 1345 inside Korea, and your carrier can confirm what documents they accept for your specific visa. This is general information, not legal or immigration advice — confirm your specific case with immigration (Hi Korea / the 1345 helpline).

Frequently asked questions

Can I get a Korean phone number as a tourist?

No. Tourists and short-term or visa-waiver visitors cannot get a Korean 010 number, because Korea requires an Alien Registration Card to open a line in your name and short stays do not register for one. Use a data eSIM instead: it gives you internet on a passport, with no number, and activates when you land.

What if my ARC is delayed past the 90-day registration deadline?

The 90-day window is set by immigration, not by your carrier, so a phone plan cannot work around it. If your appointment or card looks like it will run past your deadline, contact immigration through HiKorea or the 1345 helpline before the date passes rather than after, since late registration can carry consequences for your stay. On the phone side nothing changes: stay on a data eSIM until the physical card is actually in hand, then convert to postpaid. Rules and timelines change, so confirm your own situation with immigration.

Can my spouse or dependent on an F-3 visa get a Korean number?

An F-3 dependent who registers for their own ARC generally follows the same path as any long-stay resident: data eSIM first, then a postpaid line in their own name once the physical card arrives. The number has to be registered to the person using it, so a child or dependent without their own ARC cannot hold a line in their name. Family eligibility rules do change, so confirm with the carrier or immigration before you buy.

I’m a D-4 student here for under a year — can I get a number?

Possibly, but it depends on your ARC, not the length of your course. If your D-4 stay is over 90 days you register for an ARC, and with the physical card in hand you can usually open a postpaid line like other long-stay residents. A bridge plan that converts to a 12-month contract may outlast a short course, so check the term against your stay, and ask before you buy if you are unsure your visa qualifies.

What happens to my number if I switch jobs or visas?

Your 010 number is tied to you and your line, not to a single employer, so changing jobs does not by itself cancel it as long as the line stays paid and your residency stays valid. A visa change that affects your ARC is the thing to watch: if your stay status lapses, your line and the verified services attached to it can be affected. When you change visa category, keep your ARC current and tell your carrier so the registration on the line stays valid.

Is an MVNO (알뜰폰) good for foreigners?

MVNOs resell the KT, SKT, and LG U+ networks at lower prices and can save you money once you are settled. For a first line, though, most still need your ARC and offer limited English support, so a foreigner-focused plan on a major network is usually smoother to start with.

Which carriers can give a foreigner a Korean number?

All three network owners (KT, SKT, LG U+) and the MVNOs that lease their networks can, once you have a qualifying long-stay visa and your physical ARC. Kimchi’s plans run on the KT network and are built around the data-now, number-after-ARC sequence foreigners actually go through.

Getting connected the right way

The whole thing gets simpler once you separate the two needs. Internet is instant and for everyone; a Korean number is a later step that belongs to long-stay residents with an ARC. Match your plan to the one you actually need, and you skip the most common new-arrival mistakes.

Visiting for a short stay? Start with a Korea data eSIM sized to your trip and activate it the moment you land. Staying long term on an F, E, or D visa? Begin on data with a bridge plan like the Kimchi Welcome 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 fits your visa, ask before you buy, or read more on our FAQ page.