When you travel to South Korea and have signal the moment you land at Incheon, everything gets easier: book a ride, check the map to your hotel, snap photos in Seoul, Busan and Jeju. That is why a Korea eSIM is increasingly preferred by Vietnamese travellers over a paper SIM or pricey roaming.
Why choose an eSIM for South Korea?
- Online the moment you land – no queueing for a SIM at Incheon/Gimhae.
- Keep your Vietnamese number to receive bank OTPs and Zalo while the eSIM handles data.
- Strong coverage via Korea's major carriers, stable even in the suburbs and on Jeju.
- Cheaper than roaming, with costs known up front and no surprise bills.
Choose a Korea eSIM by trip length
Go365 offers many data sizes and validity periods for Korea eSIMs, from short 3–5 day trips to two-week stays. Suggested by need:
- Light use (maps, chat, social media): about 1GB/day is enough.
- Moderate use (plus video, sharing photos/clips): choose 2GB/day or more.
- Heavy use (livestream, hotspot for another device): prefer a high-data or unlimited plan.
Data sizes and prices change over time; see the latest on the plan page below.
How to install a Korea eSIM
- Buy a plan and receive the QR code by email.
- Scan the QR while still in Vietnam (on Wi-Fi) to install the profile.
- On arrival in Korea, turn on Data Roaming for the eSIM and you are online.
Step by step: how to install & activate an eSIM. New to eSIM? Read the complete eSIM guide.
Tips to save data in South Korea
- Download offline maps of Seoul/Busan before you go.
- Use KakaoTalk to message and call – the most popular app in Korea.
- Use free Wi-Fi in subway stations and cafés for heavy video.
Buy a Korea eSIM
Pick the plan that fits your trip, receive the QR instantly and be online the moment you set foot in the land of kimchi.