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Select one eSIM per person
Recommended for your trip:
If so, you might want to buy an eSIM that works across several destinations, including South Korea.
Install your eSIM before or during your trip to South Korea. Your data plan will activate automatically once you arrive and enable the eSIM on your device.
Select your departure and return dates
SK Telecom 5G and LG U+ 5G cover Seoul, Busan, Jeju and the KTX high-speed rail corridor between them with reliable data for T-money card taps, KakaoTaxi rides and Naver Map walks through the older neighborhoods. Signal holds along the entire Gangnam Station outdoor plaza in Seoul and inside the modern COEX Mall convention complex, drops inside the older granite halls of Gyeongbokgung Palace where the heavy tile roofs and the ancient wooden beams block reception, and weakens on the rural stretches of the KTX line through the mountains of Gangwon Province where the long tunnels and the forested terrain reduce the line of sight to the nearest tower.
14 plans are available for South Korea, from $3.99 up to $67.99. Every plan is data only, delivered by QR code, and starts counting when you connect on arrival.
Same plan, same coverage, wherever you go in South Korea.
TailSim, the best eSIM for South Korea
| days | Price |
|---|---|
| 7 days 1 GB | $3.99 USD |
| 15 days 3 GB | $6.99 USD |
| 30 days 5 GB | $8.99 USD |
| 30 days 10 GB | $14.99 USD |
| 30 days 20 GB | $20.99 USD |
| 30 days 50 GB | $53.99 USD |
| days | Price |
|---|---|
| 3 days Unlimited | $8.99 USD |
| 5 days Unlimited | $13.99 USD |
| 7 days Unlimited | $18.99 USD |
| 10 days Unlimited | $26.99 USD |
| 15 days Unlimited | $38.99 USD |
| 20 days Unlimited | $48.99 USD |
 |  |  |  | |
|---|---|---|---|---|
| Unlimited data plans | ||||
| Instant activation with QR code | ||||
| Human support in your language | ||||
| Price adjusted per destination | ||||
| No mandatory app to buy and use | ||||
| No roaming charges or surprises |
| | | | |
|---|---|---|---|---|
| 10 GB | $14.99 | $19.00 | — | $18.99 |
| 20 GB | $20.99 | $30.00 | — | $29.99 |
| Unlimited · 5 days | $13.99 | $20.00 | $20.50 | $18.99 |
| Unlimited · 7 days | $18.99 | $29.00 | $27.50 | $26.99 |
| Unlimited · 15 days | $38.99 | $49.00 | $50.50 | $48.99 |
Updated: 2026-09-16
Pick the perfect data package for your trip to South Korea based on how much you use your phone.
Check compatibilityGet your eSIM by email and choose the installation method you prefer for South Korea.
Pick the method that best fits your device to activate the eSIM in South Korea.
Available installation methods
Open the installation link you'll receive by email and your device will set up the eSIM automatically, no scanning required.
*Available on iPhone and iPad with iOS 17.4 or later, and on most recent Android phones.
Scan the QR code you'll receive by email with your device's camera and follow the on-screen steps to activate the eSIM.
Stay connected across South Korea, including popular destinations such as Gyeongbokgung Palace and Haeundae Beach
Purchase your eSIM online before traveling to South Korea, scan the QR code, and access mobile internet as soon as you arrive. No physical SIM card or local store required.
Choose the best eSIM plan for your trip to South Korea, whether you need unlimited data for remote work or a prepaid option for maps, messaging, and social media.
Enjoy reliable mobile internet in South Korea, airports and popular tourist areas.
Continue using your favorite apps, maps, messaging services, and online tools in South Korea without swapping physical SIM cards. Enjoy a simple and convenient way to access mobile internet during your trip.
Fast, stable connection for the apps you use most in South Korea
Clear video calls in South Korea without unexpected drops
Share stories and photos from South Korea instantly
Enjoy creating video content from South Korea and uploading it without waiting or buffering
Navigate South Korea with Google Maps without losing your way
| Activity | Usage |
|---|---|
| Google Maps | Low |
| Low | |
| Medium | |
| YouTube / TikTok | High |
| Hotspot | High |
| Traveler type | Suggested plan |
|---|---|
| Weekend trip | 3–5 GB |
| 1 week traveler | 10–20 GB |
| Heavy traveler | Unlimited |
The best eSIM for South Korea is one with reliable 5G coverage, instant activation, and no roaming fees. With TailSim, you get unlimited data across South Korea.
You only need an eSIM-compatible device and a plan for South Korea. Activate upon arrival for instant internet.
Yes. Use your physical SIM for calls/SMS and the eSIM for mobile data. Disable roaming on your physical SIM.
Receive QR code via email, go to Settings > Mobile Data > Add Data Plan, scan QR. Activates when you arrive in South Korea.
Yes. eSIM offers instant activation without visiting a store. Coverage matches physical SIMs in covered areas.
Yes. 5G works on the KTX high-speed train between Seoul and Busan for streaming and messaging, but expect brief drops inside the longer mountain tunnels along the corridor. We recommend downloading offline maps of Seoul and Busan before boarding because the rural Gangwon Province stretches have thinner coverage. Your eSIM is useful for KakaoPay payments at convenience stores, navigating with Naver Map (Google Maps is less accurate in Korea), and translating menus with Papago. Note that the T-money transit card requires a separate physical card from the station vending machines; your eSIM keeps the data running while you tap the card on the subway gates.
Yes. 5G works around the Gyeongbokgung Palace complex and the nearby Gwanghwamun Square for navigation and photos, but expect signal drops inside the heavier stone halls where the ancient tile roofs and granite walls block reception. We recommend downloading offline maps of the palace grounds because the deeper inner courtyards have thin coverage. Your eSIM is useful for KakaoPay payments at convenience stores, navigating with Naver Map (Google Maps is less accurate in Seoul), and renting hanbok costumes through the local apps. Note that the T-money transit card requires a separate physical card from the station vending machines; your eSIM keeps the data running while you tap the card on the subway gates.
Yes. 5G works along the Haeundae Beach promenade and the Busan Aquarium for navigation and photos, but expect drops if you go paddleboarding or kayaking off the coast because the open water and the distance to the tower reduce coverage. We recommend downloading Naver Maps offline before heading to the beach because Google Maps is less accurate in Busan. Your eSIM is useful for KakaoPay payments at the Jagalchi seafood market, navigating the Busan Metro with Naver, and translating menus with Papago at Korean BBQ restaurants. Note that the T-money transit card requires a separate physical card from the station vending machines; your eSIM keeps the data running while you tap the card on the subway gates.
Install before traveling, activate upon arrival in South Korea.
Access to 4G or 5G speeds. Fast throughout Seoul, Busan, and major tourist areas.
Some plans include hotspot. Check before purchasing.
Choose based on trip duration. Plans range from 1 to 90 days.
Yes. Your WhatsApp number remains unchanged.
Yes. Enable roaming for the eSIM to work. No extra charges with TailSim eSIM.
