Can Foreigners Get a Korean Phone Number? SIM and Mobile Plan Guide

Yes. Foreigners can get a Korean mobile number, including short-term visitors who have only a passport. However, a tourist number and a resident-registered number do not provide the same functions.

A passport-activated prepaid SIM or eSIM is usually sufficient for calls, text messages, restaurant bookings, and providing local contact details. For Korean mobile identity verification, banking services, and some account registrations, you will generally need a phone line registered under your name using a Korean Residence Card.

Information and sample prices below were verified on June 9, 2026. Mobile plans, promotions, activation rules, and counter hours can change, so confirm them with the carrier before purchasing.

Quick answer

The Korea Tourism Organization confirms that travelers can purchase SIM cards that provide a personal Korean number. Tourist products are sold through carrier roaming centers, convenience stores, and online providers, although the exact functions vary by product. See the official VISITKOREA communications guide.

What counts as a Korean phone number?

Standard Korean mobile numbers normally begin with 010. When written internationally, remove the first zero and add South Korea's country code:

• Inside Korea: 010-1234-5678
• From overseas: +82-10-1234-5678

A plan advertised as a Korean SIM does not necessarily include usable voice calls or outgoing SMS. Some travel eSIMs are data-only, even if the carrier assigns a number internally. Check whether the product specifically supports:

• Incoming calls
• Outgoing calls
• Incoming SMS
• Outgoing SMS
• Voice or text-message top-ups
• Passport verification after arrival
• Korean mobile identity verification, called 본인인증 or 본인확인

That last item is particularly important. Having a number beginning with 010 does not automatically mean that Korean websites can verify your identity through it.

Option 1: Tourist SIM or eSIM with a passport

Short-term visitors can buy prepaid service using their passport. The major network operators KT and SK Telecom sell visitor products for stays of up to 90 days, with physical SIM and eSIM options depending on the plan and device.

KT states that its visitor eSIM products receive 010 numbers. Its short-term products are intended for foreign visitors staying no more than 90 days, and voice or SMS functions may require an entry check at a carrier roaming center. KT also states that its tourist eSIM does not support Korean personal authentication. Review the current conditions on the official KT Korea eSIM page.

SK Telecom similarly requires passport verification before calls and text messages become available on eligible tourist SIM and eSIM products. Data can work before that verification, but voice and SMS cannot. Its products are also intended for stays within 90 days. See the official SK Telecom visitor SIM reservation page.

Sample short-term prices

As verified on June 9, 2026, official KT and SK Telecom visitor pages listed data products at approximately:

These are examples, not a universal price schedule. Voice-enabled packages, promotional rates, speed limits, and bundled calling credit can produce different totals. Confirm the final price and refund conditions before payment.

What to bring

For collection or activation at an airport counter, prepare:

• Your original passport
• The phone you intend to use
• Your reservation confirmation or QR code, if ordered online
• A payment card accepted by the operator
• A SIM-eject tool if your phone uses a physical SIM

Enter your name exactly as printed on your passport. A spelling or name-order mismatch can prevent passport verification.

Option 2: A prepaid number while waiting for a Residence Card

Exchange students, employees, and other new residents often arrive before their Korean Residence Card is ready. During this period, a passport-registered prepaid plan can provide a temporary 010 number.

KT's official foreign-customer shop states that passport-only subscriptions are limited to prepaid service and, without a registered foreigner identification number, can be used for up to 90 days. Its longer-cycle Welcome prepaid plans include data, calls, and texts; current details are available on the KT Welcome Prepaid plan page.

Before choosing a temporary plan, ask the store these questions:

1. Can this number later be updated with my Residence Card?
2. Can I keep the same number when changing to a resident plan?
3. Will the line support PASS identity verification after my details are updated?
4. What is the final date for registration or renewal?
5. Does the plan end automatically, or must I cancel it?

Number retention and conversion procedures can differ by carrier and product. Get confirmation for the specific plan rather than assuming every tourist SIM can be converted.

Option 3: A resident mobile plan with a Residence Card

Foreign residents can subscribe to regular mobile service after receiving an eligible Korean Residence Card, such as a Foreigner Residence Card, Permanent Resident Card, or Overseas Korean Resident Card.

KT instructs general foreign customers to visit a KT store with a Residence Card, Permanent Resident Card, or passport. Passport-only customers are restricted to prepaid service, while Residence Card holders can apply for broader options. See the official KT foreign-customer subscription FAQ.

Resident plans may be prepaid, postpaid, or offered by an 알뜰폰 provider, usually translated as a budget mobile carrier or MVNO. MVNO plans can cost less, but English support, in-person service, eSIM availability, and identity-verification compatibility vary.

Documents and payment

Requirements vary by carrier and account type, but you should normally take:

• Your physical Residence Card
• Your passport as a backup ID
• A Korean bank account or payment card if automatic billing is required
• Your current SIM and phone if transferring an existing number
• Proof of eligibility for any student, employee, military, or diplomatic arrangement

Visit an official store or a reputable authorized dealer. Ask for a written explanation of the monthly charge, activation fee, device installments, minimum term, discounts, and early-cancellation costs before signing.

Some plans have no long commitment, while discounted contracts may impose repayment or cancellation charges if terminated early. Do not sign a Korean-language contract you do not understand; request English assistance or bring someone who can interpret it accurately.

A phone number is not the same as identity verification

This is the most common source of confusion for newcomers.

Korean services often use a carrier-based identity check through the PASS app or a browser verification screen. The system compares your name, Residence Card information, date of birth, nationality details, carrier, and phone number. A tourist SIM registered only with a passport generally cannot complete this process.

LG U+ confirms that foreign customers can use PASS when their phone contract is registered with a Residence Card, Overseas Korean Resident Card, or Permanent Resident Card. It also states that passport-activated prepaid lines do not support PASS authentication. See the official LG U+ guidance for foreign users of PASS.

For successful verification, your carrier record should match your official ID exactly. Problems can occur when:

• Your name is entered in a different order
• Spaces or hyphens differ from the Residence Card record
• The line remains registered to your passport rather than your Residence Card
• The phone is registered under another person's name
• The selected carrier or MVNO is incorrect
• The website does not adequately support foreign names or identification records

After receiving your Residence Card, ask the carrier to update the subscriber information. Do not assume the change happens automatically.

Will a Korean number work for every app and website?

No. A local 010 number improves compatibility, but each service sets its own account and verification rules.

A passport-based tourist number may be useful for receiving ordinary calls or reservation messages. However, services requiring legal identity confirmation may reject it. Even a properly registered resident line can encounter problems if the service does not handle foreign names correctly or requires additional Korean payment information.

Treat these as separate requirements:

• Local contact number: Needed when a hotel, restaurant, clinic, or delivery driver must contact you.
• SMS receipt: Needed to receive a basic one-time code, where supported.
• Carrier identity verification: Requires compatible service registered under your legal identity.
• Korean payment account: May require a domestic card, bank account, or additional financial verification.

Physical SIM or eSIM?

Choose an eSIM if your phone supports it and you want to keep your home SIM active. A physical SIM is often easier to troubleshoot at a staffed counter and may suit phones without eSIM capability.

Check your phone before buying

Your device must be carrier-unlocked. An eSIM-compatible model sold in one country may not support exactly the same features as the version sold elsewhere, so check the model number rather than relying only on the product name.

For an eSIM:

1. Confirm that the phone supports eSIM installation.
2. Keep the QR code available on another screen or on paper.
3. Install it only according to the carrier's timing instructions.
4. Label your home and Korean lines clearly in the phone settings.
5. Select the Korean line for mobile data.
6. Disable data roaming on your home line to prevent unexpected charges.
7. Do not delete the eSIM until the service has ended.

KT warns that its visitor eSIM QR code can be installed only once and may not be reissued after deletion. Activated eSIMs may also be non-refundable.

Where to buy a Korean SIM

The most straightforward locations for a first-time visitor are staffed carrier roaming centers at major international airports. Staff can check phone compatibility, inspect the passport, install the SIM, and confirm whether calls and texts work before you leave.

Official visitor services are available from major carriers at airports including Incheon, Gimpo, Gimhae, and Jeju, although locations and opening hours differ. KT's site, for example, listed one 24-hour counter in Incheon Airport Terminal 1 and another operating from 06:00 to 22:00 when checked on June 9, 2026. Check the current terminal and arrival-hall location on the carrier website before your flight.

SIMs are also sold online, at some convenience stores, and through specialist travel providers. If buying from a third party, confirm which Korean network operates the service, whether a 010 number is included, and who handles activation or refunds.

Common mistakes to avoid

• Buying a data-only eSIM when you need incoming calls or SMS
• Assuming every 010 number supports Korean identity verification
• Leaving the airport before completing required passport verification
• Using a phone that is still locked to a home-country carrier
• Deleting a one-time eSIM profile while troubleshooting
• Registering the line under a friend's name
• Entering a nickname instead of the passport or Residence Card name
• Letting a prepaid plan expire before transferring an important number
• Signing a discounted long-term contract without checking cancellation costs
• Discarding the original SIM before confirming that the Korean service works

What to check before you go

Use this checklist before purchasing or visiting a carrier store:

• Is my phone unlocked?
• Does my exact model support Korean network bands and eSIM, if required?
• Do I need data only, or calls and SMS as well?
• Do I need a 010 number for local reservations?
• Do I need PASS or other Korean identity verification?
• Will I stay longer than 90 days?
• Do I already have a Korean Residence Card?
• Can the number be retained when I change plans?
• What identification and payment methods does the store accept?
• What are the speed limit, validity period, refund rules, and cancellation charges?
• What time does the airport or city counter close?

FAQ

Can I get a Korean phone number without a Residence Card?

Yes. Foreign visitors can obtain a prepaid Korean number with a passport. The plan will normally be limited in duration and usually will not support Korean mobile identity verification.

Can I get a Korean number before arriving in Korea?

You can order some eSIMs online before departure. Activation, entry confirmation, calls, or text messages may not become available until you enter Korea or complete passport verification at a carrier counter.

Can I use a tourist SIM for KakaoTalk?

A tourist SIM can provide data and, on eligible plans, SMS reception. KakaoTalk's current registration and account-security requirements should be checked directly in the app. A working local number does not guarantee access to every identity-dependent feature.

Can I keep my Korean number after receiving my Residence Card?

Possibly, but it depends on the original product and carrier procedure. Ask whether the line can be updated or transferred before buying it, and complete the change before the prepaid validity period ends.

Can a foreigner get a postpaid phone contract?

Yes, generally after receiving an eligible Residence Card. Approval, payment method, deposit, contract term, and device-financing conditions depend on the carrier and the customer's circumstances.

Where can I get help with Residence Card requirements?

Residence and immigration rules are handled by the Korea Immigration Service, not the mobile carrier. Contact the Immigration Contact Center at 1345 inside Korea or consult the official Korea Immigration Service website. The carrier must answer questions about phone-plan eligibility and registration.

Sources

• VISITKOREA: Electricity and Communications
• KT Korea eSIM for foreign visitors
• SK Telecom visitor SIM and eSIM reservations
• KT Global Shop subscription FAQ
• KT Welcome Prepaid plans for foreigners
• LG U+ guidance on PASS identity verification
• Seoul Metropolitan Government communication guide
• Korea Immigration Service

For a short trip, compare an official voice-enabled tourist SIM with a data-only eSIM before departure. For a longer stay, use a temporary prepaid number if necessary, then visit your carrier after receiving your Residence Card to register the line correctly under your legal identity.