Does the eSIM work right away when I enter Korea from abroad?

Yes. If you install the eSIM before departure, it links up automatically with the SK Telecom or KT network the moment you arrive at Incheon International Airport or Gimpo Airport. You can use data right away, with no extra setup or SIM swap.

Does data work well on Korea's subway or on the KTX?

Korea is one of the world's leading telecom powerhouses. LTE and 5G connections stay stable even inside Seoul's subway tunnels and while travelling at high speed on the KTX. SK Telecom and KT have both invested heavily in coverage along rail and subway lines, so you hardly need to worry about dropouts on the move.

Can I use data on Jeju Island or in the mountains of Gangwon-do?

Yes, you can. Nationwide coverage in Korea reaches 99%, so you can use stable data at most major tourist spots, including all over Jeju Island and around the trails of Seoraksan and Jirisan National Parks. However, coverage can be patchy in a very few remote areas, such as the backcountry of the Baekdudaegan range.

Can I use KakaoTalk or Naver Map with a Korea eSIM?

Of course. You can use all the apps that are essential in Korea, such as KakaoTalk, Naver Map and KakaoMap, as normal. Thanks to fast 5G and LTE speeds, maps load and real-time searches run very quickly.

What are Korea's power outlets and voltage like? Do I need an adapter?

Korea uses 220V, and the outlets are Type C and Type F. They are the same as Europe's standard round-pin plugs, so European devices can be used without an adapter. If you are bringing devices from North America (Type A) or the UK (Type G), bring an adapter with you.

Does eSIM work in South Korea?

South Korea supports eSIM, and plans start from ₩4,204. Install it with the QR code you receive after buying, then just turn on data roaming after you arrive and you are connected straight away. There is no need to swap your SIM.

Travel eSIM or carrier roaming: which is cheaper for a trip to South Korea?

For a short trip or light data use, a travel eSIM is usually cheaper. Unlimited roaming from Korean carriers costs about ₩11,000–₩15,000 a day, but with an eSIM you can buy just the days of data you need in advance. For a short trip for one or two people, an eSIM has a big advantage; for a family or very heavy data use, compare carrier unlimited roaming too.

Which carrier network does a South Korea eSIM use?

In South Korea it connects automatically to local carrier networks such as SK Telecom · KT · LG U+ (4G/LTE, 5G where supported). Population coverage is about 99%. It picks the network with the strongest signal automatically, so there is nothing to set up.

Can I keep using my Korean number while travelling in South Korea?

Yes. The eSIM works as a data-only second line, so your Korean SIM and number stay as they are. Use the Yeohaengyusim eSIM for data only, and keep receiving calls, texts and KakaoTalk on your Korean number.

Can I add to or extend my South Korea eSIM plan?

Yes. When you use up your data or the plan period ends, you can buy a new plan at any time. Keep using the eSIM profile you already installed; there is no need to install it again, so you carry on without interruption.

Can I use tethering (hotspot) in South Korea?

Yes. In South Korea you can share your eSIM data with other devices such as a laptop or tablet by tethering (hotspot). Shared data also comes out of your plan allowance, so if you tether a lot we recommend choosing a little more data.

Do I set up the eSIM before I leave or after I arrive?

We recommend installing it (registering the QR code) before you leave, while you have Wi-Fi. Data starts when you turn on data roaming after you arrive in South Korea. Just remember "set up before you leave, switch on when you arrive" and you can use the internet as soon as you land.

South Korea eSIM plans

Instant delivery

A travel eSIM for South Korea starts from ₩4,204 and works as soon as you buy it. In South Korea it connects automatically to local networks such as SK Telecom · KT · LG U+ (4G/LTE, 5G where supported), with population coverage of about 99%. Install it with the QR code before you leave and you can use the internet as soon as you land, with no roaming setup.

Sent instantly by email
30-day refund
Customer support in Korean
Credit card · Apple Pay

South Korea eSIM at a glance

Price: From ₩4,204
Local networks: SK Telecom · KT · LG U+
Network: 4G/LTE & 5G
Activation: QR code — install before you leave
Recommended data: Maps and messaging 1 GB a day · more room 2 GB a day · video: unlimited

eSIM plans you can use in South Korea

Data	Validity	Price
Unlimited	1 day	₩4,204
Unlimited	3 days	₩15,053
Unlimited	5 days	₩25,601
Unlimited	7 days	₩34,641
Unlimited	10 days	₩45,189
Unlimited	15 days	₩61,764
Unlimited	30 days	₩91,900
1 GB	7 days	₩4,505
2 GB	15 days	₩9,026
3 GB	30 days	₩10,533
5 GB	30 days	₩16,560
10 GB	30 days	₩28,614
20 GB	30 days	₩48,203
50 GB	30 days	₩66,284

From the lively streets of Seoul and the beautiful nature of Jeju Island to the food and sea of Busan — wherever you go in Korea, there is plenty to see and do. Many foreign travellers come to experience the home of K-pop and Korean Wave culture first-hand, but a local data connection also matters more than you might think when overseas Koreans and Koreans living abroad visit their home country for the first time in a long while. Instead of queuing for a SIM swap after landing at the airport or putting up with expensive roaming charges, install a Yeohaengyusim eSIM in advance and you are online right after landing at Incheon Airport. You can get directions on KakaoMap, search for good places to eat and post to social media without interruption. Running on SK Telecom's and KT's 5G networks with 99% nationwide coverage, it gives you fast speeds anywhere from central Seoul to small provincial towns.

Flight times to major cities from Incheon

Domestic destinations from Seoul (Incheon Airport) — Jeju about 1 hour, Busan about 1 hour

Time difference

KST (UTC+9) — based on Korea Standard Time

Best season to go

March–May (spring flowers), September–November (autumn leaves)

Plug type

Type C/F (220V, no adapter needed)

Why an eSIM is useful for a trip to Korea

Korea has some of the best telecom infrastructure in the world. Both how quickly it launched commercial 5G and the quality of its LTE rank among the very best worldwide, and the network is so dense that you can stream without interruption even inside subway tunnels. That is exactly why, to make the most of data in Korea, it is important to choose an eSIM plan with good network quality. If you are arriving from abroad, the SIM card booths at Incheon and Gimpo airports have long queues, and their prices are hard to compare. With a Yeohaengyusim eSIM, you install it on your smartphone before departure, and it links up automatically with the SK Telecom or KT network the moment you reach Korea. You can enjoy fast data anywhere: in the trendy cafés of Myeongdong and Hongdae in Seoul, at sights such as Gyeongbokgung Palace and Insadong, at a guesthouse in the mountains of Gangwon-do, or on a coastal drive along the Namhae coast. Activation takes a single QR code with no SIM swap, so getting ready for your trip becomes much simpler.

Network coverage in South Korea

Carrier

SK Telecom

+ KT

Network

4G/LTE & 5G

Coverage

99%

How do I install a South Korea eSIM?

1
Buy a plan
Choose a data plan for South Korea and complete payment.
2
Scan the QR code
Open the email we sent and point your phone camera at its QR code.
3
Install the eSIM
Complete the eSIM installation as prompted. Doing it before you leave is simplest.
4
Connect on arrival
Once you land in South Korea, switch data roaming on and you're online.

1
Buy a plan
Choose a data plan for South Korea and complete payment.
2
Scan the QR code
Open the email we sent and point your phone camera at its QR code.
3
Install the eSIM
Complete the eSIM installation as prompted. Doing it before you leave is simplest.
4
Connect on arrival
Once you land in South Korea, switch data roaming on and you're online.

Which plan is right for me?

Short trip

For a short 3–7 day trip, an unlimited data plan is ideal.

Business trip

We recommend a high-data plan with plenty for video calls and email.

Long stay

Staying a month or more? A large-data plan gives the best value.

Family trip

Families sharing a connection across multiple devices should pick a tethering-enabled plan with a generous data allowance.

eSIM, local SIM or pocket Wi-Fi: what suits a trip to South Korea best?

	eSIM	Local SIM	Pocket Wi-Fi
Activation	Instant (QR code)	Buy locally	Pick up / delivery
Setup	2 minutes	SIM swap needed	Separate device
Price	From ₩4,204	₩10,000~50,000	₩5,000~15,000/day
Network	Local 4G/LTE	Local 4G/LTE	Local 4G/LTE
Devices	1 smartphone	1 smartphone	Up to 5
Flexibility	Top up any time	Fixed data	Daily rental
Best for	Ideal for travellers	Long stays	Families / groups

South Korea eSIM FAQ

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