For most visitors, the SK Telecom tourist eSIM is the best all-round choice for Korea. Its official plan includes unlimited data at speeds of up to 100Mbps, offers validity periods from 1 to 90 days, and can support Korean calls and text messages after passport verification. LG U+ is a strong alternative for data-heavy users, while KT is useful if you prefer clearly stated daily high-speed allowances and extensive airport support.
Prices and product conditions in this guide were verified on June 9, 2026. Promotions, refund rules and supported devices can change, so confirm the final terms on the carrier's website before payment.
Quick answer
| Traveler | Recommended eSIM | Main reason |
|---|---|---|
| Most short-term visitors | SK Telecom | Unlimited data up to 100Mbps and optional Korean calls/SMS |
| Heavy data users | LG U+ | Official data plan advertised without a speed cap or throttling |
| Travelers who value clear fair-use terms | KT | 3GB high-speed data daily, then unlimited data at up to 5Mbps |
| Visitors staying 30–90 days | SK Telecom | Published plans covering up to 90 days |
| Anyone needing formal Korean identity verification | None of these tourist eSIMs | A tourist number generally cannot replace a resident mobile account |
The three Korean carriers charge broadly similar standard prices for common trip lengths. Choosing by network name alone is therefore less useful than checking data-speed rules, phone-number functions, activation timing and device compatibility.
Best overall: SK Telecom tourist eSIM
SK Telecom's official tourist eSIM is the most balanced option for a typical trip. The carrier states that data is unlimited at speeds of up to 100Mbps. That is more than sufficient for navigation, translation, video calls, social media and ordinary video streaming.
As verified on June 9, 2026, published prices include:
| Validity | Price |
|---|---|
| 1 day, data-only | ₩6,500 |
| 3 days | ₩18,000 |
| 5 days | ₩27,500 |
| 7 days | ₩35,000 |
| 10 days | ₩38,500 |
| 15 days | ₩55,000 |
| 30 days | ₩71,500 |
| 60 days | ₩107,000 |
| 90 days | ₩143,000 |
SK Telecom offers both data-only and data, call and SMS versions. Incoming domestic calls and messages are free on the phone-enabled product after passport verification. Outgoing calls and messages require an additional prepaid balance, available in amounts beginning at ₩5,500.
The important limitation is verification. Data can work without passport verification, but calls and text messages remain unavailable until the required check is completed. SK Telecom says verification can take place after immigration clearance. Depending on the product and purchase route, you may need to use its online verification system or visit an airport roaming center.
SK Telecom's phone-enabled product is intended for foreign short-term visitors staying no more than 90 days. It is not available to Korean passport holders. Its published payment conditions also exclude cards issued in Korea.
Who should choose SK Telecom?
Choose it if you want:
- A direct plan from a Korean network operator
- Unlimited data with a clearly published maximum speed
- A trip length between one and 90 days
- The option to receive Korean calls or text messages
- Airport assistance if online activation does not work
Do not buy the phone-enabled version solely to open Korean financial, government or resident-only accounts. Receiving a message at a Korean number is not the same as completing 본인인증, Korea's formal mobile identity-verification process.
Best for maximum-speed data: LG U+
The official LG U+ Korea eSIM is worth considering if mobile data performance is your priority. Its current product page advertises unlimited 5G/LTE data without a speed cap or throttling. It offers separate LTE and 5G selections, so check the exact option shown in your cart rather than assuming every plan has identical terms.
Published starting prices verified on June 9, 2026 were:
| Validity | Starting price |
|---|---|
| 1 day | ₩6,500 |
| 2 days | ₩12,000 |
| 3 days | ₩18,000 |
| 4 days | ₩23,000 |
| 5 days | ₩27,500 |
LG U+ activates the plan when it first connects to data in Korea, rather than automatically starting it when you make the purchase. The eSIM must currently be activated within 60 days of purchase.
The carrier assigns a Korean 010 number, but the data-only version cannot make outgoing calls or send messages. LG U+ says incoming call and text functions depend on identity verification, while its data-plus-voice product supports outgoing service after verification and top-up. The data-plus-voice option may require purchase or processing at an airport counter.
Device compatibility needs particular attention. LG U+ explicitly warns that its tourist eSIM does not support Google Pixel and OPPO devices. Compatibility can also depend on the country in which a handset was sold. Owners of these phones should choose another carrier unless LG U+ confirms support for the exact model and regional variant.
LG U+ does not allow cancellation or a refund after payment for its data eSIM, and an installed profile cannot be reissued after deletion. These conditions make checking compatibility before purchase essential.
Best for predictable daily data: KT
KT's official prepaid eSIM provides 3GB of high-speed data each day, followed by unlimited use at up to 5Mbps. The 3GB allowance resets at midnight. This arrangement is straightforward: occasional heavy use will not disconnect you, but speeds may decrease after the daily allowance is consumed.
Verified KT data-plan prices on June 9, 2026 included:
| Validity | Price |
|---|---|
| 1 day | ₩6,500 |
| 3 days | ₩18,000 |
| 5 days | ₩27,500 |
| 7 days | ₩35,000 |
| 10 days | ₩38,500 |
| 15 days | ₩55,000 |
| 30 days | ₩71,500 |
KT also lists Data & Voice and Data & Travel products. The standard Data & Voice option includes approximately 60 minutes of calls, while the Data & Travel version includes a transportation card but requires a separate balance for outgoing voice service. Availability and prices differ from the basic data plan.
KT calculates validity in 24-hour periods beginning when the eSIM is installed or activated according to the selected product's conditions. Its tourist service is limited to a maximum total period of 90 days, including extensions.
Like the other carriers, KT warns users not to delete the cellular plan after installation. Its QR code is for one installation only and cannot simply be scanned again. KT also states that Korean-issued credit and debit cards cannot be used for these tourist products.
KT has roaming centers at major airports, including Incheon, Gimpo and Gimhae. This makes it a practical choice for travelers who prefer access to in-person support. Check the KT roaming-center page for current counter locations and opening hours before arrival.
Do you need a Korean phone number?
A data-only travel eSIM is enough for KakaoTalk, WhatsApp, FaceTime, email, maps and app-based calls. It is usually the simplest choice for a holiday.
A working Korean number becomes useful when:
- A hotel, tour operator or restaurant may call you
- A reservation form requires a local contact number
- You expect to receive simple text-message codes
- You need to contact a business that does not use messaging apps
However, not every 010 number has the same capabilities. Some data-only plans display a Korean number but cannot receive messages until passport verification. Others cannot send messages or make outgoing calls at all.
A short-term tourist eSIM also normally cannot perform the resident identity checks required by Korean banks, government websites, delivery services and some membership systems. Exchange students and new residents who need those services should ask their university, employer or carrier about a resident mobile plan after receiving the appropriate immigration documentation.
How to install a Korea eSIM
Before departure
- Confirm that the phone is carrier-unlocked. An unlocked phone is not restricted to your home network.
- Dial
*#06#and look for an EID number, or check the manufacturer's specifications. An EID generally indicates eSIM capability. - Check the Korean carrier's device list, especially if you have an Android phone sold for a particular regional market.
- Buy the plan from the carrier's official website and retain the confirmation email, QR code and order number.
- Display the QR code on another screen or print it. A phone cannot easily scan a code displayed on its own screen unless the operating system supports importing it from an image.
On arrival in Korea
- Connect to airport Wi-Fi before changing cellular settings.
- Add the eSIM through the phone's mobile or cellular settings.
- Label it clearly, such as
Korea eSIM. - Select the Korea eSIM for mobile data.
- Enable data roaming for the Korea eSIM if instructed by the carrier.
- Disable data roaming on your home SIM to prevent unexpected charges.
- Keep your home SIM enabled only if you need messages from your bank or airline and understand your home carrier's roaming charges.
- Open a map or webpage without Wi-Fi to confirm that mobile data works.
Do not delete the eSIM while troubleshooting. Korean tourist eSIM QR codes are commonly single-use, and deletion can make the plan unrecoverable.
eSIM or physical SIM?
Choose an eSIM when your phone supports it and you want to keep your physical home SIM installed. Setup can be completed without opening the SIM tray, and there is nothing to collect or return.
A physical SIM may be safer when:
- Your phone's eSIM compatibility is uncertain
- You own an unsupported Pixel or OPPO model for LG U+
- You want airport staff to install and test the service
- You may need to move the service to another phone
The Korea Tourism Organization's communications guide confirms that local-carrier roaming centers at major Korean airports provide SIM cards and other connectivity services. Counter hours and stock can change, so check the selected carrier before relying on an airport purchase late at night.
Common mistakes to avoid
- Buying before checking the carrier lock: eSIM support does not mean the phone is unlocked.
- Assuming unlimited always means unrestricted: Read the high-speed allowance, maximum speed and fair-use wording.
- Activating too early: Some validity periods begin when the profile is installed or first connects, while others must be activated within a purchase window.
- Deleting the profile: A deleted Korean tourist eSIM may not be recoverable or refundable.
- Expecting resident identity verification: A tourist phone number is not a substitute for a Korean resident mobile account.
- Leaving home-line roaming enabled: This can produce international roaming charges even when the Korea eSIM is installed.
- Choosing the wrong trip length: Plans are generally calculated in consecutive 24-hour periods, not calendar sightseeing days. Include your arrival and departure times.
What to check before you go
- Phone supports eSIM and shows an EID
- Phone is carrier-unlocked
- Exact model and regional variant are supported
- Plan duration covers the full period from activation to departure
- Data speed and fair-use terms meet your needs
- Hotspot or tethering is allowed if needed
- Korean calls or messages are included if required
- Passport verification method and available hours are understood
- QR code and order number are accessible offline
- Home SIM data roaming will be disabled
- Refund and reinstallation restrictions have been read
FAQ
Will a Korea eSIM work in Seoul, Busan and Jeju?
The official SK Telecom, KT and LG U+ products are sold for use across South Korea rather than for a single city. Actual reception still varies inside buildings, underground spaces and remote areas.
Can I use a mobile hotspot?
Carrier plans generally support ordinary personal data use, but hotspot terms can differ by product. Confirm tethering on the final product page if you plan to connect a laptop or several devices.
Should I install the eSIM before flying?
You can usually add the profile while connected to reliable Wi-Fi before departure, but do not allow it to connect or begin its validity prematurely. Follow the selected carrier's activation instructions exactly. If the terms are unclear, retain the QR code and install it using airport Wi-Fi after landing.
Which plan should I buy for a one-week trip?
For seven full 24-hour periods, the standard published price from the Korean carriers is generally ₩35,000. Count from the expected activation time. A seven-day plan activated at 4 p.m. normally expires around 4 p.m. seven days later, not at the end of that calendar day.
What is the practical recommendation?
Buy the SK Telecom tourist eSIM for the strongest balance of transparent unlimited-data terms, trip-length choices and optional phone service. Choose LG U+ when uncapped data speed is the deciding factor and your phone is explicitly supported. Choose KT when 3GB of high-speed data per day is sufficient and you value clearly stated throttling rules or airport assistance.
Before paying, open the official product page on the phone you will bring, confirm its exact model, and take a screenshot of the current plan conditions and order details.
