Korean carrier comparison

Korea eSIM with a Korean Phone Number

Choose a Korean carrier tourist eSIM when you need a Korean 010 number, domestic calls or SMS. Do not assume that receiving a Korean number unlocks every Korean app or identity-verification service.

If you only need maps, messaging, translation and mobile data, an international data-only eSIM is usually simpler.

This guide compares official tourist eSIM conditions from SK Telecom, KT and LG U+. Carrier passport or entry verification activates carrier services; it is not the same as Korean resident identity verification.

Compare Korean carriers Understand verification limits

Last reviewed:

Quick answer

Start with the function you actually need

Data only is enough

Choose a simpler travel eSIM for maps, messaging, translation and mobile browsing when you do not need a Korean number.

You need a Korean number

Compare carrier products when you need domestic calls, incoming SMS, some reservation codes or a number local businesses can call.

A tourist eSIM may still not solve it

Banking, government and resident-only services can require Korean identity records that a short-term tourist line does not provide.

Know the boundary

What a Korean 010 number actually gives you

A local number is useful, but its functions depend on the carrier, the plan and whether required passport or entry checks are complete.

Usually included or possible

A Korean mobile number, incoming calls, incoming SMS and carrier-specific voice or text options. KT explicitly states that its tourist eSIM numbers use the 010 prefix; LG U+ says the assigned number appears after arrival.

Depends on carrier and plan

Outgoing calls, sending SMS, voice top-up, receiving app codes, online activation and whether an airport passport check is required.

Not guaranteed

Banking verification, government identity verification, resident-only services or acceptance by every Korean app. A working phone number and legal identity verification are separate capabilities.

Product type

Data-only versus data-and-voice eSIM

  1. 01
    Data-only

    Designed around mobile data. Incoming SMS availability varies by carrier product, while outgoing calls and texts may be unavailable. Even when a Korean number is assigned, its use can remain limited.

  2. 02
    Data + Voice

    Combines data, a Korean number and carrier-defined call and text functions. Outgoing use can require a separate balance, and passport or post-entry verification may be required before voice and SMS work.

Official conditions checked

Compare Korean tourist eSIMs

The order is editorial, not a ranking. Prices are omitted because the three carriers do not present one directly comparable set of product conditions.

Korean carrier tourist eSIM conditions checked August 2, 2026. Confirm the selected product again before payment.
Carrier Best for eSIM type Korean 010 number Incoming calls / SMS Outgoing calls / SMS Activation and passport check Data policy Hotspot Extension or top-up Reissue after deletion Verification limits Last verified
SK Telecom Travelers wanting online purchase and post-arrival passport verification Data; Data, Call, SMS Mobile number provided; 010 prefix not clearly stated on checked English page After passport information verification Data, Call, SMS product; top-up required Online or airport purchase; passport verification online after immigration or at airport Unlimited LTE, with official maximum-speed wording Not clearly stated on checked product pages Voice/text top-up; period extension not available No; a new eSIM must be purchased No personal authentication or payment-related texts Aug. 2, 2026
KT Travelers who can use airport support for voice and SMS Data eSIM; Data / Call / SMS eSIM Yes; KT states all numbers use 010 Free after identity verification (entry check) Voice product only; separate balance after entry check Data can be purchased online; voice/SMS entry check at KT airport roaming center Unlimited with speed control; plan duration can be extended Not clearly stated on checked English product page Data extension; voice top-up after entry check No; deleted QR profile is not reissued KT says personal authentication is unavailable Aug. 2, 2026
LG U+ Travelers wanting online data-only setup or airport Data + Voice Data Only; Data + Voice Yes; number appears in settings after arrival Included on both listed product types Data + Voice only; deducted from call balance Data Only online or airport; Data + Voice airport only Unlimited 5G/LTE; usage period starts at first data use Supported; device-dependent Period extension and voice top-up supported for eligible eSIM No after activation or installation Some reservation SMS codes; no banking or government identity verification Aug. 2, 2026

Critical distinction

SMS codes are not the same as Korean identity verification

Four separate events must happen: a Korean number is assigned, an SMS is received, the app accepts that number, and—only when required—the service's legal identity check succeeds.

  1. 01
    Korean number assigned

    The carrier gives the line a mobile number. This alone says nothing about whether an app or identity system accepts it.

  2. 02
    SMS received

    The line and product can receive a text after any required carrier verification. Some data-only products do not provide this function.

  3. 03
    App accepts the number

    A reservation or transport service may send a simple code, but acceptance depends on its current policy and the account.

  4. 04
    Legal identity verification succeeds

    Banking, government and resident-based services can require subscriber-name and Korean identity records. A tourist prepaid eSIM does not guarantee those records.

Official carrier information: SK Telecom and KT state personal-authentication limits. LG U+ permits certain restaurant and taxi reservation SMS verification but excludes banking and government identity verification.
Korea Inside editorial guidance: treat every app's acceptance as a separate check, not as a general benefit of having a 010 number.

Carrier details

What differs by carrier

SK Telecom tourist eSIM

Best forTravelers who want online purchase plus online passport verification after immigration.

Official tourist product: SK Telecom lists a Data product and a Data, Call, SMS product for foreign short-term visitors. The checked English page confirms a mobile number and domestic call and text functions but does not clearly label that number with the 010 prefix.

Calls, SMS and activation: data works regardless of passport verification status. Incoming and outgoing calls and texts work after passport information verification, and outgoing use requires a top-up. Online buyers receive a QR code by email and can verify after immigration through the voucher link or at an airport roaming center.

Limits and support: SK Telecom states that personal authentication and payment-related texts are unavailable. Period extension is not supported, a manually deleted profile requires a new purchase, and same-day refunds are conditional on no data, call or SMS use. Hotspot support is not clearly stated on the checked product pages.

Official SK Telecom Data, Call, SMS eSIM page · Official SK Telecom Data eSIM page · Passport verification
Last checked: August 2, 2026

KT tourist eSIM

Best forTravelers comfortable completing voice and SMS activation at a KT airport roaming center.

Official tourist product: KT lists both Data eSIM and an eSIM with data, calls and SMS for short-term foreign visitors. It states that all assigned phone numbers use the 010 prefix.

Calls, SMS and activation: incoming calls and SMS are free after KT's “Identity Verification (Entry Check).” Outgoing calls and SMS require the voice-capable product and a separate balance. KT says the entry check must be completed at an airport roaming center; data service can be purchased online.

Limits and support: the official page describes unlimited data with speed control, extensions and voice top-up after entry check. It says the profile is installed only once, a deleted QR profile cannot be reissued, and personal authentication is unavailable. Hotspot support is not clearly stated on the checked English product page.

Official KT tourist eSIM page · KT roaming customer center
Last checked: August 2, 2026

LG U+ tourist eSIM

Best forTravelers choosing between online Data Only and airport-supported Data + Voice.

Official tourist product: LG U+ separates Data Only from Data + Voice. Both list incoming calls and texts; only Data + Voice supports outgoing calls and texts. The assigned phone number becomes visible in device settings after arrival in Korea.

Purchase and use: Data Only is sold online and at the airport, while the FAQ lists Data + Voice as airport-only. Advance purchase is possible. The usage period begins with first data use, and the official page supports hotspot use, eligible period extension and voice top-up.

Limits and support: LG U+ says an installed or activated eSIM cannot be restored, reinstalled or reissued and that completed eSIM purchases are not refundable. It permits SMS verification for certain restaurant and taxi reservation apps on voice/SMS service, but excludes banking and government identity verification.

Official LG U+ tourist eSIM page · LG U+ eSIM FAQ
Last checked: August 2, 2026

Setup path

Online activation versus airport support

Purchase, QR installation, data start and voice/SMS activation are not always the same step.

  1. SKT

    Online purchase and post-arrival passport verification

    SK Telecom sends the QR voucher by email. After immigration, verification can be completed through the voucher during stated service hours or at an airport roaming center.

  2. KT

    Online data, airport voice and SMS check

    KT sells Data eSIM online, but its official English guidance routes the entry check for voice and SMS to a KT airport roaming center. Bring the passport and purchase information.

  3. LG U+

    Online Data Only, airport Data + Voice

    LG U+ sends a QR code for advance Data Only purchases and starts validity at first data use. Its FAQ lists Data + Voice purchase at the airport.

Final checks

Before you buy

  • Confirm the phone supports eSIM and is carrier-unlocked.
  • Decide whether incoming SMS is enough or outgoing calls are required.
  • Check whether passport or airport verification is required.
  • Check when the validity period begins.
  • Confirm the refund, deletion and reissue rules.
  • Save the QR code and purchase record.
  • Confirm whether the selected plan supports hotspot use.
  • Keep the home SIM from using paid roaming data.
  • Do not assume a 010 number guarantees identity verification.

Prevent avoidable problems

Mistakes that cause the most trouble

Buying data-only when outgoing calls are required

Prevent it by confirming the exact product type and whether a voice balance can be added.

Assuming incoming SMS means full app verification

Treat number assignment, SMS reception, app acceptance and identity verification as four separate checks.

Confusing entry check with resident identity verification

A carrier entry check activates its service. It does not create Korean resident identity records.

Deleting an installed eSIM

Disable the line instead and contact the carrier first. All three checked carriers warn about deletion or reissue limits.

Activating before the intended date

Confirm whether scanning, installation, first data use or network connection starts validity.

Arriving without passport or purchase information

Keep the passport, email voucher, contract number and QR record available offline.

Assuming every plan can be extended

SK Telecom directs users to buy another eSIM, while KT and LG U+ describe extension paths.

Expecting the same call balance from every carrier

Compare the exact voice product and top-up method rather than treating all carrier eSIMs alike.

Leaving the home SIM as the data line

Select the Korean eSIM for mobile data and turn off cellular-data switching.

Choosing a Korean carrier plan when data-only is simpler

If maps and messaging are enough, compare international travel eSIMs before accepting extra activation steps.

Simpler alternative

When an international data eSIM is the better choice

An international data-only plan can fit better when you need maps and messaging, do not need calls, texts or a Korean number, prefer setup before departure, are visiting Korea and Japan, prioritize data allowance, or want to avoid an airport counter.

Compare international travel eSIMs for Korea by data structure, activation, hotspot and refund terms.

Bottom line

Final recommendation

Use a Korean carrier tourist eSIM when a Korean number, domestic calls or SMS materially helps your trip. Choose by the exact incoming, outgoing, passport-check and deletion rules—not by the carrier name alone.

Use an international data-only eSIM when mobile data is enough. A 010 number does not guarantee Korean resident identity verification, and no carrier should be treated as “best overall” without matching its official conditions to your actual need.

Common questions

Frequently asked questions

Do Korean tourist eSIMs provide a 010 phone number?

The checked SK Telecom English page confirms a mobile phone number and domestic call and text functions but does not clearly state the 010 prefix. KT states that all numbers on its tourist eSIM products use the 010 prefix, and LG U+ states that its eSIM phone number appears after arrival in Korea. Confirm the exact product before purchase.

Can I receive calls and SMS with a Korean tourist eSIM?

Often yes, but only under the selected carrier's conditions. SK Telecom enables incoming calls and texts after passport information verification. KT requires an airport entry check for voice and SMS. LG U+ lists incoming calls and texts for both Data Only and Data + Voice plans.

Can I make outgoing calls and send SMS?

It depends on the carrier and product. SK Telecom's Data, Call, SMS product and KT's voice-capable eSIM require a voice or text balance, while LG U+ requires its Data + Voice product. Data-only products may not support outgoing calls or texts.

Can I use a tourist eSIM for Korean app verification?

Some simple SMS codes may work when the product can receive texts and the app accepts the number. LG U+ specifically mentions restaurant and taxi reservation app SMS verification. Acceptance still depends on the service, account and current policy, so a Korean number does not guarantee every app will accept it.

Can I use it for banking or government identity verification?

Do not rely on a tourist eSIM for banking, government or resident identity verification. SK Telecom says personal authentication and payment-related texts are unavailable, KT says its tourist SIM cannot perform personal authentication, and LG U+ says banking and government identity verification is not supported.

Do I need a passport to activate the eSIM?

Passport or entry verification requirements differ. SK Telecom requires passport information verification after immigration for calls and texts. KT requires an entry check at an airport roaming center for voice and SMS. LG U+ requires passport-based purchase or registration conditions and sells its Data + Voice option at the airport.

Can I install the eSIM before arriving in Korea?

Online products may provide a QR code before arrival, but installation, validity and voice activation are separate events. SK Telecom provides a QR code by email and completes passport verification after arrival. LG U+ allows advance purchase and starts the usage period at first data use. Follow the exact carrier instructions before scanning.

What happens if I delete the eSIM?

Deletion can permanently disable the profile. SK Telecom says a deleted profile requires purchase of a new eSIM, KT says its QR code cannot be reissued after deletion, and LG U+ says an activated eSIM cannot be reinstalled or reissued. Disable the line instead and contact the carrier before deleting it.

Continue planning

Verification record

Official sources

Carrier conditions can change. Open the product and support pages again before purchase or activation.