Japan & South Korea eSIM – data plans from €3.99
Flying Tokyo to Seoul on one trip? A single Japan and South Korea eSIM works in both countries, so there is no swapping on the way.
Japan & South Korea eSIM plans and prices
Plan details
- Networks: South Korea (SKTelecom 5G, LG Uplus 5G), Japan (SoftBank 5G, KDDI/au 5G)
- Validity starts when the eSIM connects to a network at your destination.
- Install the eSIM within 180 days of purchase.
- You can buy more data for the same eSIM if you need it.
- Data only. For calls and messages you can use your own SIM card or apps.
Is the data enough?
Choose trip length and usage to get a rough suggestion.
Estimate: about 5.6 GB
Suggestion: 10 GB · 30 days · €25.49
The estimate is based on average use. Video and hotspot use data quickly.
VAT included. One-off payment, no automatic renewal. By buying you accept the terms and ask for immediate delivery, so your right of withdrawal ends once the eSIM has been delivered.
- First check if your phone supports eSIM
- Help with any problems: [email protected]
Two countries, one eSIM
The plan covers two countries. In Japan it uses SoftBank and KDDI/au, and in South Korea SK Telecom and LG Uplus, with 5G support on both. In cities and on routes between big cities the connection is generally good, while mountains and small islands can weaken it.
Maps and public transport lookups are the most important apps in both countries, so a daily plan suits a city trip well. A fixed GB plan is better for relaxed use, mostly maps, messages and restaurant searches.
Getting a local SIM means a shop visit and often a queue or showing your passport. The eSIM is installed at home and the data switched on after you land. Roaming on your own plan usually works, but it is often dearer than an eSIM focused on data. If you visit only one of the two countries, the plan still covers both, so pick it only if your route takes in both.
Get started in three steps
Choose a destination and plan
You see the price, validity and data amount right away.
Install the eSIM
You get a QR code and clear instructions. Your phone needs an internet connection during installation.
Turn on data when you arrive
Select the eSIM for mobile data when you reach your destination, and turn off data roaming on your own plan.
FAQ: Japan & South Korea
Does the same eSIM work in Japan and South Korea?
Yes. It works in both countries, so you do not swap eSIMs mid-trip.
eSIM or pocket wifi for Japan?
An eSIM is lighter: it lives in your phone, so there is no device to carry or charge, and no airport pick-up.
What can I use this eSIM for?
The plan is meant for mobile internet on your trip, for example maps, messages and browsing.
Will my own number still work?
Yes. Your own number and SIM card stay active for calls and messages. Choose the Reissaa eSIM for mobile data.
When should I buy the plan?
Buy and install the eSIM before you leave, while you have a stable internet connection.
