South Korea SIM Card for Tourists (2026): SKT, KT & LG U+ Prices

These products are not directly equivalent. SK Telecom and LG U+ sell short-stay unlimited-data options, while KT’s Welcome plan uses a 30-day prepaid structure with a smaller full-speed allowance.

Roafly can be simpler when mobile data is the priority and collecting a physical SIM after arrival adds unnecessary friction. Current packages are available through South Korea eSIM plans.

Can tourists buy a SIM card in South Korea?

Yes. SK Telecom, KT and LG U+ all publish mobile products that foreign visitors can access without signing a conventional Korean postpaid contract.

SK Telecom states that its visitor SIM products are for foreign nationals and are not available to holders of a Republic of Korea passport. KT marks its LTE Welcome Prepaid plan as a foreigner product and supports sign-up using passport identification. LG U+ also uses passport verification for tourist SIM services.

Identification still matters. Seoul Metropolitan Government lists a passport or foreign registration card among the documents used for mobile-service registration. The official Seoul mobile-phone guidance gives broader context on identification requirements.

Short-term visitors should stay with products explicitly intended for foreigners. Lower-priced resident tariffs may carry identity, payment, subscription or residency requirements that make them unsuitable for a tourist purchase.

Best local SIM operators for tourists

SK Telecom: straightforward for short stays

SK Telecom offers visitor SIM products with unlimited mobile data plus domestic call and SMS functionality passport verification requirements are met.

The 5-day tourist price is ₩27,500. Incoming calls and text messages are available without an outgoing voice top-up, while outgoing calls and texts require prepaid credit.

Key details include:

• Service is intended for foreign visitors.

• Passport information must be verified before normal voice and SMS functions become available.

• Mobile data can be used even before passport verification is completed.

• Outgoing voice and text charges are deducted from a recharge balance.

• Tourist products are designed for short-term stays of up to 90 days.

• Airport roaming centers can handle pickup and identity verification.

SK Telecom publishes longer-duration visitor products as well, but travelers should check the current official price for their exact physical SIM duration rather than relying on an older price ladder.

Current eligibility, verification rules and visitor-product details are available from the SK Telecom tourist SIM page.

LG U+: useful when a 010 Korean number matters

LG U+ makes the local-number feature particularly clear. Its tourist Data + Voice SIM advertises a 010 Korean phone number alongside unlimited data.

The current 5-day base price is ₩27,500. Voice credit is optional and separate: adding approximately 20 minutes costs ₩5,500, with larger top-ups available.

Important details include:

• Passport information is required.

• Voice-enabled service requires passport verification.

• LG U+ advertises unlimited 5G/LTE data for this specific tourist product.

• Outgoing text charges are deducted from the voice balance.

• Airport pickup is supported.

• A 010 Korean number is provided with the qualifying Data + Voice product.

LG U+ also draws an important line between receiving verification texts and performing full Korean identity verification. Tourist-number functionality can help with some restaurant or taxi-service verification messages, but it does not turn a visitor SIM into a resident identity credential for banking or government services.

That distinction matters more than it might appear. Possessing a Korean phone number does not guarantee access to every local digital service.

Current pricing, voice top-ups and passport conditions appear on the official LG U+ tourist SIM page.

KT: stronger fit for a 30-day prepaid stay

KT’s LTE Welcome Prepaid plan takes a different approach. Rather than charging primarily by tourist-day duration, it provides a 30-day prepaid service specifically for foreign customers.

Welcome 1 Prepaid costs ₩35,000 including VAT for the 30-day plan payment. It provides 1GB at the plan’s basic allowance, followed by continued data at up to 1Mbps.

KT’s higher Welcome tiers raise the basic data allowance and post-allowance maximum speed:

• Welcome 3 Prepaid: ₩45,000, 3GB, then up to 3Mbps.

• Welcome 5 Prepaid: ₩55,000, 5GB, then up to 5Mbps.

• Each Welcome plan includes 200 minutes and 200 text messages.

The official KT page labels these figures as the payable plan amounts, but it does not clearly state whether a separate physical USIM issuance or starter-card charge applies at initial purchase. Because that component is not reliably published on the plan page, ₩35,000 should not be presented as a guaranteed complete physical-SIM checkout total.

Passport sign-up is supported. Customers who have not registered a foreigner identification number can use the service for up to 90 days, while longer usage requires additional real-name verification.

KT also states that unused charged amounts are not refunded when the service is cancelled. That condition is worth noting for anyone considering a larger prepaid payment near the end of a trip.

Full plan allowances, foreigner eligibility and recharge rules are published on the KT Welcome Prepaid page.

Why a Korean 010 number can matter

Mobile data handles maps, translation, messaging and most everyday travel tasks, but certain Korean services may still ask for a domestic phone number.

LG U+ explicitly provides a 010 number with its qualifying tourist Data + Voice SIM. SK Telecom supports domestic call and SMS functionality after passport verification, while KT’s Welcome plan includes voice and text allowances.

Phone-number access and identity verification remain separate issues.

LG U+ explains that tourist voice/SMS products can receive verification messages used by some reservation services, while banking and government identity verification remain unavailable. Buying a SIM purely because it has a 010 number therefore requires some caution.

Visitors relying mainly on KakaoTalk, WhatsApp, maps, translation tools and browser-based services may find that mobile data alone covers most of the trip.

South Korea SIM registration and activation

Passport-based registration is normal across the tourist-focused services covered here. Exact steps differ by operator, especially when voice and SMS functionality are involved.

Check these points before buying:

1. Confirm that the phone is unlocked. Carrier-locked devices may reject another operator’s SIM.

2. Keep your passport available. Tourist products from SKT, KT and LG U+ use foreign-customer identification.

3. Choose voice functionality before paying when possible. LG U+ charges separately for optional voice credit, while SK Telecom requires a recharge balance for outgoing calls and texts.

4. Complete required passport verification. SK Telecom restricts voice/SMS functions until verification, and LG U+ applies verification requirements to its voice-enabled tourist service.

5. Keep purchase details accessible. Recharge, support or identity questions may require contract or service information.

Longer stays can trigger different identity requirements. KT says customers without a registered foreigner identification number can use its prepaid service for up to 90 days before additional verification becomes relevant.

Activation rules should also be checked for the exact product purchased. Different operators may start validity from subscription, activation or first network use, so a single nationwide activation rule should not be assumed.

Where to buy a tourist SIM in South Korea

Official operator channels are the safest place to confirm the current product, identity rules and payment amount.

Airport roaming counters are convenient because passport verification and SIM setup can often be handled immediately after arrival. SK Telecom and LG U+ both publish airport-based visitor-service flows, while KT provides stores and other official customer channels for prepaid service.

Incheon Airport is the arrival point for many international visitors, but terminal locations, counter hours and airport-specific offers belong in a dedicated airport guide. Check Incheon Airport SIM pickup and price details before deciding to buy on arrival.

City-based operator stores can also be useful, particularly for KT’s longer 30-day prepaid option. Store eligibility, stock and supported foreigner products can vary, so checking the operator’s current information before visiting is safer than relying on old traveler reports.

Advance research has another advantage: exact plan terms can be compared before landing. Promotional pricing, retailer stock and third-party bundles should not be treated as standard nationwide operator pricing.

Local SIM or Roafly eSIM?

Physical Korean SIMs have a clear advantage when a local number, incoming calls or conventional SMS functions matter. Roafly focuses instead on mobile data without requiring a physical SIM swap or a local-store visit.

Current owner-verified South Korea standard prices are 5GB for $9.90, 10GB for $16.00 and 20GB for $24.00, with 30-day validity on each package.

Roafly’s South Korea plans are data-only. Calls, SMS and a Korean phone number are not included.

Verified product details include:

• Roafly lists SKTelecom and LG Uplus as local networks in South Korea.

• Hotspot and tethering are supported across the purchased data allowance.

• No separate hotspot quota applies.

• Setup can be completed before travel.

• Your primary physical SIM can remain installed when the phone supports the required eSIM and dual-SIM configuration.

The two listed network names should not be interpreted as guaranteed automatic switching, guaranteed coverage, a specific network generation or a speed promise.

Price alone also creates a misleading comparison. Roafly packages use fixed data allowances over 30 days, while SK Telecom and LG U+ sell short-validity products with unlimited data. The products solve different travel needs rather than competing on identical allowances.

What about coverage and other internet options?

SK Telecom, KT and LG U+ are the major Korean mobile operators, but this page does not rank nationwide speed or coverage.

Coverage comparisons require different evidence from tourist-SIM eligibility and price. Roafly lists SKTelecom and LG Uplus for its South Korea service without making a fastest-network or guaranteed-coverage claim.

Visitors comparing local SIMs with roaming, public Wi-Fi and other connectivity methods can use ways to get internet in South Korea for the broader decision.

Which South Korea SIM option fits your trip?

Short trip with incoming calls or texts: SK Telecom is a practical starting point, especially when the trip lasts several days.

Need an explicitly advertised 010 Korean number: LG U+ deserves the closest look, particularly when receiving local reservation-service messages matters.

Staying close to month: KT Welcome Prepaid has a clearer 30-day structure, though the complete initial physical-SIM cost should be confirmed at purchase because the plan page does not separately disclose a USIM issuance fee.

Only need mobile data: Roafly avoids physical SIM collection and provides 30-day data packages that can be arranged before arrival.

Phone does not support eSIM: Choose an eligible physical tourist SIM instead.

Staying beyond the usual tourist period: Check longer-term foreigner products directly with the operator because identity requirements can change after 90 days.

Frequently asked questions

Do I need a passport to buy a SIM card in South Korea?

Passport identification is used across the tourist products reviewed here. SK Telecom requires passport verification for normal voice/SMS functionality, KT supports foreigner sign-up with a passport, and LG U+ applies passport verification to its qualifying visitor services.

Can tourists get a Korean phone number?

Yes, depending on the product. LG U+ explicitly advertises a 010 Korean number with its Data + Voice tourist SIM.

Receiving a Korean number does not guarantee full Korean identity verification. Some reservation services may accept SMS verification while banking or government platforms remain unavailable to short-term visitor credentials.

Can I buy a SIM at Incheon Airport?

Yes. Major Korean operators provide visitor-oriented airport services or pickup channels at Incheon.

Counter locations, operating hours and airport-specific product availability can change, so those details should be checked close to the travel date.

Is a local SIM better than an eSIM in South Korea?

Local SIMs become more useful when calls, SMS or a Korean number are central to the trip. Data-focused visitors may prefer an eSIM because it removes physical SIM pickup and lets the primary SIM remain in the phone.

Final recommendation

SK Telecom and LG U+ are the most natural starting points for shorter tourist stays, while KT’s Welcome Prepaid range becomes more relevant as the trip approaches 30 days. Korean-number requirements can change the answer completely, so voice, SMS and verification rules deserve as much attention as the advertised data allowance.

Roafly offers the simpler alternative when mobile data is enough and arranging connectivity before arrival is preferable to collecting and registering a physical SIM.

Roafly publishes this guide and offers the travel-eSIM alternative discussed above.