The 3 stages of good timing
Many travellers wonder when to buy their Japan eSIM: the day before departure? At the airport? In reality the simplest approach is to split it into three moments — and none of them happens in a rush.
You receive your QR code by email 2 minutes after purchase, together with the free Japan guide and Google Maps map. No rush afterwards: you have 180 days to activate it.
Before departure — at home, on Wi-FiInstall the eSIM calmly2 minutes: scan the QR code from your phone settings. The eSIM stays inactive — you lose no days of your plan. Follow the step-by-step guide →
Select your eSIM for data and turn on data roaming: the connection arrives within seconds. It's now, and only now, that your period starts.
When should you buy your Japan eSIM? Right now
There's no reason to wait. Your eSIM doesn't “expire” in a drawer: you have 180 days to activate it after purchase, and the 30-day period (data plan) or your unlimited days start only on activation, once you're in Japan.
Ordering early is one less thing on the trip checklist — and time to calmly check that your phone is eSIM compatible. And if it turns out not to be after your purchase, we refund you in full: that's our compatibility guarantee.
Japan eSIM before you leave: why not wait for the airport?
Installing an eSIM needs a Wi-Fi connection and two calm minutes. At home you have both. At Narita or Haneda, after a twelve-hour flight, an immigration queue and baggage to collect, it's considerably less comfortable.
By installing your eSIM before departure, you step off the plane with internet the moment you land: Google Maps, WhatsApp and your itinerary work immediately, with no hunting for airport Wi-Fi. And if you have the slightest question during installation, our support, 7 days a week, replies within minutes — far easier to sort out from your sofa than from the arrivals hall.
The right habit: keep a copy of the QR codePrinted or saved on another device. You install before you leave, on Wi-Fi, and on the day everything is already set.
Trip moved or postponed: what happens?
Nothing serious. As long as your new departure falls within 180 days of purchase, there's strictly nothing for you to do: the eSIM waits, installed or not, and your plan starts on activation in Japan.
If your trip is pushed beyond those 180 days, write to us before you leave: our support will help you find the best solution. And once you're there, if something doesn't work as expected, see our guide “My eSIM isn't working”.
