eSIM plan for Japan and South Korea
Activate within 30 days of purchase, or your plan auto-activates after that.
Japan:KDDI/au (5G)South Korea:SKTelecom (5G), LG U+ (5G)Choose number of eSIMs
How many travelers?
Travel eSIM guide
Why choose an eSIM for Japan, South Korea?
Cover Japan, South Korea, Taiwan, Hong Kong on one prepaid data plan sized for 18 days.
Instant QR delivery — install on Wi-Fi before departure and enable data in each country.
Keep your home number active for banking OTPs while routing mobile data through the travel eSIM.
How much data for this trip?
Planning guide for a 18-day route across 4 countries.
| Travel style | Suggested data | Main uses |
|---|---|---|
| Light messaging | 6–9 GB | WhatsApp, maps, hotel check-ins |
| Typical sightseeing | 15 GB | Navigation, photos, rideshare, restaurant bookings |
| Heavy streaming | 23+ GB | Video calls, hotspot, social uploads |
Destination gallery
Where travelers use mobile data in Japan, South Korea
Real travel scenes where prepaid eSIM data helps with maps, bookings, rideshare, and staying connected after you land.
Tokyo arrivals are easier when Suica, maps, and train apps work before you leave the airport.
Seoul subway apps, KakaoT taxis, and Naver Maps work best with a Korea eSIM ready.
Taipei night markets and MRT routes need EasyCard top-ups and maps on day one.
How to choose a Japan, South Korea eSIM plan
For a 18-day route, 15 GB is a sensible starting point for maps and messaging.
Install before departure so airport transfers and first-hotel messaging work on arrival.
Countries on this route
These plans are filtered for travelers visiting all destinations on this itinerary.
- Japan
- South Korea
- Taiwan
- Hong Kong
Countries included in Japan, South Korea
Compare included destinations and open individual country eSIM pages when you need a single-country plan.
Related pages
Keep exploring Japan, South Korea
Compare nearby destinations, read travel guides, and browse more prepaid eSIM options across Kyro.
Trip-length plans
Multi-country trip plans
More Asia eSIM plans
Travel guides
Japan, South Korea eSIM FAQs
Can one eSIM cover Japan, South Korea, Taiwan, Hong Kong?
Yes. Kyro multi-country plans are built for routes that include Japan, South Korea, Taiwan, Hong Kong. Compare plans above for coverage that matches every stop on your itinerary.
When should I install my travel eSIM?
Install on Wi-Fi before departure, then enable the line after immigration in your first country. Validity typically starts when the plan first connects to a supported network.
How much data do I need for 18 days across 4 countries?
Most travelers on this route manage with 15 GB for maps, messaging, and photos. Add more if you hotspot or stream video daily.
Do I need a new eSIM at each border?
No. One multi-country eSIM keeps working as you cross borders, as long as your plan includes every destination on your route.
Network and setup details
- 1Install your eSIM on Wi-Fi before you fly, then enable the travel line after landing in each country.
- 2Partner networks vary by destination; 5G is available where supported locally.
- 3Turn off home-SIM data roaming if you only want the travel line handling mobile data.
Arrival tips for Japan, South Korea
- 1Download offline maps for subway systems before long train legs between cities.
- 2Keep ride-hail and rail apps signed in — they need mobile data for pickups and seat alerts.