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eSIM for South Korea
KT5G
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01Pick your data — popular price shown
Validity starts on first connection. Hotspot supported. No throttling. Refundable within 7 days if unactivated.
South Korea
3 GB · 30 days
Total
€2.99
Secure checkout via Paysera
Buy eSIM data plans for South Korea
Your South Korea eSIM is a prepaid data plan that connects your phone to local South Korea networks at full speed the moment you land — a digital SIM you install before you fly, with no queues, no SIM swap and no roaming fees.
A South Korea eSIM is a data-only plan you load onto your phone before you fly, so the moment you walk off the plane at Incheon International Airport you are already online. It connects to KT, the country's 5G mobile network, with no SIM swap and no roaming bill. Step past the gates, open maps, message family, call a ride, and check your train booking while everyone else is still hunting for a kiosk. Activation takes minutes, you keep your usual apps, and your data is waiting the second you land.
Hassle-free refund
Activation issue? We fix it or refund you in full.
Plans don't expire
Buy now, activate whenever your trip starts.
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How eSIM works in South Korea
Choose a data plan for South Korea, install the eSIM before your trip, and activate it when you arrive. Your regular SIM can stay in your phone, while the eSIM gives you mobile data for travel apps, messaging, maps and browsing.
Install in a tap
Scan the QR or auto-install in the app — no physical SIM.
Land & connect
Data activates on first connection at your destination.
What you can do with 3 GB
- ≈ 600 hrsMaps & navigation
- UnlimitedMessages
- ≈ 1,000Photos shared
- ≈ 50 hrsSocial & browsing
- ≈ 8.8 hrsVideo calls
- ≈ 38 hrsMusic streaming
Important cities in South Korea
Seoul · City guide
Seoul
Seoul moves fast and rewards anyone who stays connected. A Seoul eSIM keeps mobile data live as you cross the city, so you can pull up directions to the Gyeongbokgung palace, check store hours along the Myeongdong shopping streets, and time your visit up the N Seoul Tower for the view. With data running in the background, hopping between sights stays simple from morning to night.
Seoul eSIM — online before you land →Busan · City guide
Busan
Busan trades skyscrapers for sea air, and a data plan for Busan helps you make the most of it. Stay connected to find your spot on Haeundae beach, watch the comings and goings of the busy port, and look up routes to the seaside temples perched above the water. Reliable mobile data near the city centre means you can share photos and check timetables without breaking your stride.
Busan eSIM — online before you land →Incheon · City guide
Incheon
For most travellers Incheon is the airport gateway and the first ground they touch in the country. An Incheon eSIM means you are online before you leave the terminal, ready to plan a detour through the Chinatown or a stroll along the waterfront. With data already running, you can sort your transport, message ahead and settle in calmly instead of queuing for a local SIM card.
Incheon eSIM — online before you land →Jeju · City guide
Jeju
Jeju feels like a world apart, and a Jeju eSIM keeps you connected as you explore it. Use mobile data to follow the coastal trails, read up on the volcanic island scenery, and find quiet stretches of the beaches between stops. Coverage stays strong near the island's towns, so you can map your route, share the views and keep messaging home even on a full day outdoors.
Jeju eSIM — online before you land →Why Horizon
Why choose our eSIM for South Korea
An eSIM lets you skip costly roaming and have working mobile data the moment you arrive, so navigating a fast-moving country like South Korea feels effortless from your very first hour.
Better plans, built for real trips
From 1 GB for a quick trip to unlimited for the long haul — pick exactly what you need.
Easy to use
Install in a couple of taps before you go, then it activates automatically when you arrive.
Half the price, no surprises
Plans typically around half the price of other eSIM brands — no surprise bills, no hidden fees when you land.
One eSIM for all your travels
Add new destinations and top up on the same eSIM — no new install for your next trip.
Stay connected
We'll alert you as you approach your limit, so you can top up before you drop offline.
Global & regional plans
Single-country, Europe-wide, or worldwide coverage — full-speed data across borders and beyond.
Frequently asked questions
Which mobile networks does the South Korea eSIM use?
Your South Korea eSIM connects to KT, one of the country's main mobile networks, on 5G where it is available and 4G elsewhere. You get the same local coverage a domestic phone would, strongest in city centres and along populated routes.
Will coverage hold up on the KTX and out on Jeju island?
Yes, for the most part. Data is strong across Seoul and the other cities, holds well along the high-speed KTX lines, and stays dependable near towns on Jeju island and around the mountains. In genuinely remote stretches it can vary, which is normal anywhere.
Will one South Korea plan cover a multi-country trip?
This is a South Korea-only plan, so it is the right choice if your trip stays inside the country. If you are also hopping to other East Asia destinations on the same journey, pick a regional eSIM that covers several countries instead.
When should I set up the eSIM before arriving in South Korea?
Install it at home over wifi a day or two before you fly, then leave activation for when you arrive. That way it switches on as you reach the terminal at Incheon International Airport and you are online before you even reach baggage claim.
Will my phone work with a South Korea eSIM?
Most recent unlocked phones support eSIM and will work fine here. Check that your device is eSIM-capable and not locked to a single carrier, then scan the code to add the plan. If your phone is older or carrier-locked, eSIM may not be available.
Can I keep my own number and use a hotspot in South Korea?
Yes. The eSIM adds local data alongside your existing line, so you keep your own number for calls and texts while data runs over the Korean network. You can usually share that data as a personal hotspot to a laptop or a travel companion's phone.