eSIM for South Korea
Land at Incheon already online. Data for Seoul, Busan and Jeju, no SIM counter, no roaming bill.
Covers Seoul, Busan, Jeju and the KTX line
Skip the SIM queue in Incheon arrivals
Free data, data per GB, or unlimited data
One eSIM for 176 countries
Trusted by 1.4M+ users
Global data & calling
One eSIM for the globe
A Free Global Connection
Firsty connects you to South Korea's top networks
Firsty connects you to SK Telecom, KT or LG U+, in the country that switched on the world's first 5G network back in 2019. One eSIM, activated in under 60 seconds. Start free by watching ads, buy GBs that never expire, or go unlimited from €2/day. Heading on to Tokyo or Taipei? The same eSIM works in 176 other countries.
No contracts. No fair use traps. No €30-a-day roaming bill from home just to open Naver Map.
Compare all plans
Why Firsty is different in South Korea
Same price as everywhere else Korea has some of the fastest mobile data on the planet, and you don't pay a premium for it. Firsty Classic starts at €0.98 per GB and Unlimited at €2/day, exactly what you'd pay in Lisbon or Bangkok.
Buy data that never expires Most Korea eSIMs give you 5, 10 or 30 days, then your leftover data disappears. With Firsty Classic, your GBs stay on your account. Used 6 of 10 GB between Hongdae and Haeundae? The other 4 are waiting for your next trip.
How it works
How Firsty works in South Korea
How much data do you need in South Korea?
Seoul long weekend
Seoul + Busan by KTX
Seoul, Busan, Jeju / remote worker
Aww, We love you too!!
Where's Life Taking You next?
Get connected to the Firsty Network
Price table
Prepaid (use anywhere, never expires)
Data | Price | €/GB |
|---|---|---|
1 GB | €4,50 | €4,50 |
3 GB | €7,50 | €2,50 |
5 GB | €9,50 | €1,90 |
10 GB | €17,00 | €1,70 |
20 GB | €26,40 | €1,32 |
50 GB | €49,00 | €0,98 |
Unlimited (day pass or monthly)
Duration | Price | €/day |
|---|---|---|
1-6 days | €3,00/day | €3,00 |
7-14 days | €2,75/day | €2,75 |
15-19 days | €2,50/day | €2,50 |
20+ days | €2,20/day | €2,20 |
Monthly subscription | €59/month | €2,00 |
Where in South Korea does Firsty work?
Seoul: Fast 5G and 4G across the city, including Seoul Metro stations and tunnels.
Busan: Strong signal from Haeundae Beach to Gamcheon Culture Village and on the Busan Metro.
Jeju Island: Good coverage around the island, including the main Hallasan hiking routes.
Gyeongju: Covered around Bulguksa Temple, the royal tombs and the old town.
Seoraksan & Gangwon: Main trails and ski resorts are covered; deep valleys can drop to weak signal.
DMZ tours: Tourist stops have signal; some restricted military zones have none.
Questions and answers
As we develop our app you might encounter things you're not sure of. We're here to help. Below you'll find frequently asked questions on the Firsty eSIM, Firsty's data plans, and more.
What are the eSIM plans available in South Korea?
The best eSIM plans available in South Korea cater to various data needs. Firsty offers both free and paid plans for seamless connectivity. With Firsty Free, you get ad-supported data for basic internet use. For heavy data users needing high-speed internet for streaming and video calls, Unlimited is perfect, especially in vibrant cities like Seoul, Busan, and Incheon.
How can I activate a travel eSIM for South Korea?
Activating a travel eSIM for South Korea is a breeze:
Ensure you have a stable Wi-Fi connection to download the Firsty app.
Open the app and follow the super easy setup process to activate your free eSIM.
When you arrive in South Korea, your connection will be ready instantly.
For faster internet, upgrade to Firsty Fast, which you can purchase and activate anytime without needing WiFi.
Does eSIM for South Korea come with unlimited data?
Firsty’s eSIM for South Korea offers unlimited data through Firsty Free, allowing you to use essential apps like WhatsApp, Email, and Navigation without any cost. For high-speed internet and more data-intensive activities, you can upgrade to Cofmort+ or Unlimited anytime. This plan also lets you pause the service, ensuring you get the most value from your data without waste, especially when traveling between cities like Daegu and Gwangju. Saving data can also come in handy in case of emergencies, ensuring you always have access when you need it most.
What is the best way to get data in South Korea?
The most efficient way to get data in South Korea is by using Firsty Free or purchasing days of fast data through the Firsty app. South Korea’s top mobile internet providers include SK Telecom, KT, and LG Uplus. With Firsty, you automatically connect to the fastest provider based on your location, whether you're in Seoul, Busan, or Incheon. Paying per day with Firsty ensures a reliable connection without relying on WiFi for basic internet. This flexibility means you only pay for what you use and can avoid expensive bundles.
Does Firsty work on the Seoul subway, the KTX and Jeju?
Yes. Korea has some of the best underground coverage in the world: you'll have signal in Seoul Metro stations and tunnels, on the KTX between Seoul and Busan, and around Jeju Island. Expect weaker signal deep in mountain valleys like Seoraksan.
Do Naver Map and KakaoTalk work with Firsty in Korea?
Yes. Any app that runs on data works, including Naver Map, Kakao Map, KakaoTalk, Kakao T and Papago. Download them before you fly. Locals use Naver Map or Kakao Map for walking and subway directions, as Google Maps directions in Korea are still limited.
Can I create a hotspot with my eSIM South Korea plan?
Absolutely! With Unlimited, you can create a hotspot in South Korea to share your internet connection with others. This is perfect for connecting multiple devices or providing internet access to friends and family. Just enable the hotspot feature on your phone, and others can connect using your Firsty Fast connection. This feature is especially useful when traveling with a group, particularly during visits to landmarks like Gyeongbokgung Palace, the bustling streets of Myeongdong, or the beaches of Busan.