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An eSIM that works in Japan
An eSIM that works in Japan
FairWave's Japan eSIM gets you connected the moment you land: buy it now, install it before you fly, and activate any time in the next 180 days. Every plan on this page covers Japan on 4G and 5G where the local network has it. 70% of the value of the data you don't use comes back to you as FairCredit.
Pick your plan
Every plan below covers Japan. More data or more days, same country.
Nothing activates until you install it. You have 180 days.
What this eSIM covers
This plan covers one country: Japan. Every plan on this page shares the same coverage; the only choice is how much data and how many days.
What speed you actually get, and what we can't tell you
Every plan here runs on 4G and 5G where the local network has it.
For the fixed-data plans on this page, including the featured one, the operator publishes no throttle at all. That does not mean there isn’t one. It means they did not tell us, and we are not going to turn their silence into a promise. You will see exactly what they stated on each card, and “not specified by the provider” where they stated nothing.
180 days to activate
Buy it now, use it whenever. Every plan on this page can sit unactivated for 180 days, and the clock on your data only starts when you install the eSIM and connect.
The data you don't use comes back
Most travel eSIMs keep whatever you don't spend. We don't.
When your plan ends, FairCredit returns 70% of the value of the data you didn't use, as credit towards your next trip, valid for 12 months.
Will it work on my phone?
An eSIM needs a phone that supports eSIM and is not carrier-locked. Most phones sold in the US in the last five years qualify, and a few do not.
Setting it up
1. Buy the plan. You get an install link by email straight away.
2. Install the eSIM before you fly, while you are still on Wi-Fi. It sits dormant.
3. Land, turn on the FairWave line, keep your US number on your physical SIM for calls and texts.
FAQ
Does this eSIM cover all of Japan?
Yes. Every plan on this page covers Japan; the only difference between plans is data and duration.
How long do I have to activate it?
You have 180 days from purchase. The clock on your data only starts when you install the eSIM and connect to a network.
Is there a speed limit or a data cap?
It depends on the plan; it is printed on every plan card. For the fixed-data plans, the operator publishes no throttle, which we show as “not specified by the provider” rather than as a promise of full speed.
What happens to data I don't use?
FairCredit returns 70% of its value as credit towards your next trip, valid for 12 months.
Sources
Coverage list, plan durations and speed policy: eSIM Access catalog, package family JP, checked 16 Sep 2026.
Catalogue last checked 2026-09-21; we re-check before every publish.