Short answer: for maps, messaging and browsing, a data-only eSIM is enough, and the four travel eSIM sellers we read, Airalo, Holafly, Klook and Nomad, describe their eSIMs as data only. If you also want calls and texts on a Korean line, Korea’s carriers SK Telecom, KT and LG U+ sell eSIMs for visitors that include them, after a passport or entry check; KT and LG U+ say their numbers start with 010. The catch is that a Korean number is not the same as Korean identity verification. SK Telecom says its visitor eSIM cannot receive text messages for personal authentication or payments, and KT says its eSIM does not support personal authentication. LG U+ says its voice and SMS service can receive codes from restaurant and taxi reservation apps, but not identity verification for banking or government services. Below is what each company’s own pages say, so you can choose before you fly.
Last checked: October 9, 2026. We read the visitor eSIM pages of SK Telecom, KT and LG U+, Incheon Airport’s list of roaming centers, the help pages of Airalo, Holafly, Klook and Nomad, and Apple’s support pages. We did not buy, install or activate any eSIM, and we did not try any Korean app with a visitor number.
A note on the search term: an “eSIM card” is not a card. Apple describes an eSIM as “an industry-standard digital SIM built into your iPhone, eliminating the need for a physical SIM card.”
Quick answers
| Question | What we found |
|---|---|
| Is an eSIM a physical card? | No. Apple calls it a digital SIM built into the phone, and Google and Samsung also describe it as a digital SIM rather than a physical card |
| Do travel eSIM sellers give you a Korean number? | Not in what we read. Airalo, Holafly and Nomad describe their eSIMs as data only, and so does Klook’s general FAQ |
| Can a visitor get a Korean number on an eSIM? | Yes, from the carriers. KT says all its numbers start with 010, and LG U+ says its Data+Voice eSIM comes with a 010 number. SK Telecom sells a “(Data, Call, SMS)” eSIM. Calls and texts start only after a passport or entry check |
| Will that number pass Korean identity verification? | SK Telecom and KT say no. LG U+ says codes from restaurant and taxi reservation apps work, but not identity verification for banking or government services |
| Will my phone work? | It has to support eSIM and must not be locked to a carrier. On an iPhone, check Settings > General > About |
| Where do I buy one? | Online or at the carriers’ airport roaming centers, but KT sells its eSIM with calls and texts only at its airport roaming center. Incheon Airport lists 24-hour roaming centers of all three carriers on the first floor of both terminals |
1. Data-only or a Korean number: which do you need?
A data-only eSIM gives you mobile internet and nothing else. Airalo’s help center says: ““Data Only” plans do not include calls and texts.” It adds that you can usually make calls through messaging apps such as WhatsApp, Telegram and Signal, because those apps use data.
Your home number can keep receiving calls and texts if you leave that line on. Airalo says that to do this, “you need to enable the primary line and set it up as your Default Voice line.” Apple adds a warning: “You might still incur roaming fees from your home eSIM.” Ask your home carrier about the cost before you go.
A Korean number is worth paying for if you want local calls and texts, or if something you plan to use in Korea will send its code to a Korean number. Several apps visitors use ask for a phone number and a text-message code. Our guides to KakaoTalk verification, NAVER sign-up, Kakao Taxi and food delivery apps each cover the phone number question for that app.
A Korean number is not Korean identity verification. Check this before you pay extra for a number. Here is what each carrier says about its visitor eSIM:
- SK Telecom: “Receiving text messages related to personal authentication services and payments is not possible.”
- KT: “KT eSIM does not support the personal authentication.”
- LG U+: “When using Voice/SMS services, SMS verification for restaurant and taxi reservation apps is available, but Identity Verification for banking or government services is not supported.”
LG U+’s setup guide also says its Data+Voice eSIM gives you “a Korean number starting with 010, so you can receive the SMS verification needed to sign up for Korean delivery and taxi-hailing apps.” The carrier pages we read do not name which apps accept a visitor number, and we did not test any.
2. What SK Telecom, KT and LG U+ sell visitors
| SK Telecom | KT | LG U+ | |
|---|---|---|---|
| Data only | A 1-day pass. For 2 days or longer, SK Telecom says to buy its “(Data, Call, SMS)” product | “Data eSIM”, sold online and on site | The QR code comes right after purchase, with no airport visit |
| Calls and texts | “(Data, Call, SMS)” eSIM. Incoming calls and texts work after passport verification; outgoing calls and texts need a top-up | The eSIM with calls and texts is sold only at KT’s roaming center at the airport. KT says all its numbers start with 010 | Data+Voice eSIM with a 010 number |
| Passport or entry check | Online through the email voucher, 8 AM to 10 PM daily, after you clear immigration. One product per passport | Calls and texts work only after an entry check at KT’s airport roaming center | Visit the airport counter after purchase and show your passport to get the QR code |
| Who can buy, and how many | Short-term foreign visitors staying 90 days or less. Passport verification for one product per passport | Foreign tourists visiting for a short period (within 90 days). 1 voice SIM and 4 data SIMs per person | Up to 3 items per passport |
| Install by | Scan the QR code within 180 days of purchase | Within 30 days of purchase (see below) | Activate within 60 days of purchase |
A few details from the same pages:
- Prices were listed without a date. On October 9, 2026, SK Telecom showed its LTE data-only 1-day plan at 6,500 won, and KT showed 1 day at ₩6,500. Check the current price on the carrier’s page before you buy.
- KT’s online entry check: KT posted a notice introducing an online entry check, but its title now reads “(Temporarily Suspended).” KT’s eSIM page says voice and SMS “will be available only after completing Identity Verification(Entry Check) at the KT roaming center in airport.” Plan on the airport counter if you want KT calls and texts.
- KT’s install deadline: one line on KT’s eSIM page says “eSIM install is available within 90 days after purchase,” and another says to install within 30 days: “If not installed within 30 days, it will be automatically terminated (No refund).” Install within 30 days to be safe.
- KT’s data cap: “After 11GB of data usage on a line in a day, you may still use data service unlimited at the speed of 5Mbps.”
- SK Telecom payment: “Payments cannot be made with credit cards or debit cards issued in Korea.”
- Deleting the eSIM: SK Telecom says that if you delete the eSIM profile during use, the service ends regardless of the remaining period and you have to buy a new eSIM.
3. Travel eSIM sellers: Airalo, Holafly, Klook and Nomad
These four sellers describe their eSIMs as data only. Airalo’s and Holafly’s lines below come from their Korea pages; Klook’s and Nomad’s come from general help pages:
- Airalo: its Korea package page says it “Operates on the SK network in South Korea,” and its help center says data-only plans “do not include calls and texts.”
- Holafly: “The South Korea digital eSIM only comes with cellular data.” Its Korea page adds: “It does not include a local phone number for traditional phone calls or text messages, so it is not a South Korea eSIM with a phone number.”
- Klook: its general FAQ says: “Since eSIMs on Klook provide only data, make sure to choose a different SIM for receiving the calls.” We could not open Klook’s Korea product pages, so check each listing.
- Nomad: “Nomad eSIMs are optimized for data-based services only and do not support traditional voice calls and SMS.”
Two things to check on whichever plan you pick:
- When the clock starts. Airalo says that for most of its packages, “the validity period begins when the eSIM connects to a supported network.” Holafly’s Korea page says: “Your plan activates immediately upon connecting your eSIM to any supported network.” Nomad’s help center says both that its eSIM usually starts when it first connects to the local network and, in another article, that “Local plans activate upon installation.” Read your plan’s own terms.
- Hotspot. Airalo says you can use a personal hotspot “as long as it is supported by your device and the network.” Holafly’s Korea page says “Share 1 GB of data per day,” while another Holafly article about Korea says “up to 500 MB of hotspot data.” If you need hotspot, ask the seller which applies.
4. Before you fly: will your phone take an eSIM?
- eSIM support. Apple lists “An iPhone XS, iPhone XS Max, iPhone XR, or later.” Apple also says: “In China mainland, only iPhone 18 Pro, iPhone 18 Pro Max, iPhone 17e, and iPhone Air support eSIM,” and “In China mainland, Hong Kong, and Macao, certain iPhone models feature Dual SIM with two nano-SIM cards.”
- Carrier lock. Apple says: “To use your iPhone with another carrier when traveling internationally, your iPhone cannot be locked to a carrier.” To check, open the Settings app, tap General, then tap About. “No SIM Restrictions” next to Carrier Lock means the phone is not locked. Apple says it cannot remove a carrier lock for you, so ask your carrier before you travel. Airalo says carrier locks “will prevent your eSIM from being set up or connecting,” and SK Telecom says its eSIM works only on phones without “country lock restrictions for overseas SIM use.”
- LG U+ and some Android phones. LG U+ says: “Google Pixel, Motorola, and OPPO devices cannot use LG U+ eSIM.” If you plan to use SK Telecom or KT with one of these phones, check with that carrier first.
If your phone cannot take an eSIM, read our Korea SIM card guide for the physical SIM checks.
5. If your eSIM does not connect in Korea
- Check Data Roaming on the eSIM line. Holafly’s Korea page says “you must turn on data roaming on your phone’s settings,” and Airalo’s newer troubleshooting page says to “make sure Data Roaming is turned on for your eSIM line.” An older Airalo page says to set it “ON or OFF as instructed in your Airalo app,” so follow your seller’s instructions. For an iPhone with a single SIM or eSIM, Apple’s path is Cellular Data Options, then Data Roaming.
- Pick the network by hand. Holafly says that if your phone stays on SOS or No Service, “manually selecting can help your device connect to a compatible carrier.”
- Do not delete the eSIM while troubleshooting. Holafly says, “don’t delete your eSIM because you may not be able to reinstall it,” and its Korea page says: “Your eSIM card for South Korea can’t be transferred or reinstalled once it’s installed.” SK Telecom says deleting it ends the service.
- One app or website fails but others work? Airalo says that because its eSIM data goes through a roaming platform, “certain apps or websites may not be accessible due to their security settings.” Our suggestion: try that app on Wi-Fi to see whether it is the connection.
For the full checklist, step by step, see our guide to fixing a Korea eSIM that is not working.
6. At the airport
Incheon Airport lists 24-hour roaming centers for SK Telecom, KT and LG U+:
| Terminal | Where (Incheon Airport’s listing) |
|---|---|
| Terminal 1 | All three: “Near Arrival Hall F on the West Side of 1st Floor, Terminal 1” |
| Terminal 2 | SK Telecom: “Near Exit 7 on 1st Floor, Terminal 2” · KT and LG U+: “Near Exit 4 on 1st Floor, Terminal 2” |
LG U+ says its airport roaming centers are at Incheon (T1 and T2), Gimpo and Gimhae, and that you can buy an eSIM there on the day you arrive without a reservation. SK Telecom says its eSIM with calls and texts can be bought on its website or at the airport roaming center.
7. Which one should you get?
- A data-only eSIM (from a seller or a carrier) if you need maps, messaging and browsing, and your home number can still receive texts while you are in Korea.
- A carrier eSIM with calls and texts if you need a Korean number for calls or for an app’s text-message code. Of the three, only LG U+ says codes from restaurant and taxi reservation apps work. Plan time for the passport or entry check: at the airport for KT and LG U+, or online after immigration for SK Telecom.
- Neither if what you need is Korean identity verification for banking or government services. None of the three carriers says its visitor eSIM supports that.
What we did not test
We did not buy, install or activate any eSIM, did not visit a roaming center, and did not try any Korean app with a visitor number. The facts above come from the carriers’ and sellers’ own pages, Apple’s, Google’s and Samsung’s support pages, and Incheon Airport’s listing, read on October 9, 2026. The suggestions are ours. Prices and plans change, so the carrier’s or seller’s page at the time you buy is the one to follow.