Buy now, activate when you land
No clock ticking yetEverything you need for reliable data from the moment you land.
KDDI cover Tokyo, Kyoto, Osaka and Hiroshima and every major corridor between them — urban cores and highways alike.
Validity clock starts on first data use in Japan, not at purchase. Install at home — activate when you arrive.
Dual SIM means your regular number stays live. WhatsApp, iMessage, and all messaging apps work normally.
Share your connection with a laptop or travel companion — hotspot included on all Japan plans at no extra charge.
Running low on data? Top up your eSIM in seconds by creating an account. We’ll keep an eye on things for you and send an alert when you hit 50% and 80% usage.
Flat prepaid pricing — pay once, know exactly what you get. No bill shock, no hidden fees, no contracts.
Our Global eSIM covers Japan, Korea Republic of , China and Taiwan-Province of China in a single plan — no need to buy separate eSIMs for each country. One install, 4 destinations.
Travelling beyond Japan? Browse regional and nearby plans.
Or if your trip is only taking you to a single country, browse our full destination library or see the quick links beside for prominent countries in this regional bundle.
If you haven't used any data, you're entitled to a full refund — no questions asked.
Three steps — takes under two minutes.
Choose your data bundle and checkout. Your eSIM is delivered instantly by email — no waiting, no postage.
Install before you fly — all you need is Wi-Fi at home. No local signal needed to install.
Enable data roaming on your breeze eSIM. Plan validity starts on first use in Japan — not at purchase.
Full specification list for your Japan eSIM plan.
| Device requirement | eSIM-compatible and network-unlocked |
| Supported devices | iPhone XS+ · Samsung Galaxy S20+ · Google Pixel 3+ · iPad (select models) |
| Connection type | Data only — no regular voice calls or SMS |
| Hotspot / tethering | ✓ Yes, included on all plans |
| Speed | 4G/LTE and 5G where available* |
| Plan activation | Starts on first data use in Japan, not at purchase |
| Validity counted in | Calendar days from first use |
| Top-up | Available anytime via breeze website |
*5G access depends on local network rollout. Actual speeds vary by location and network load.
Watch how to install your Japan eSIM in under two minutes — covers iOS one-click install, Android setup, and QR code scanning.
Suica card, Shinkansen bookings, and Shibuya Crossing live cams all need data — the Navitime transit app is essential for the world's most complex rail network.
Temple circuit and Gion geisha district need data for timed-entry tickets — booking Fushimi Inari at dawn and finding hidden machiya teahouses reward connectivity.
Dotonbori street food and Universal Studios Japan need data — Tabelog restaurant reviews and last-minute USJ Express Pass bookings keep your trip optimized.
Peace Memorial audio guides stream on your phone — data helps with JR Ferry bookings to Itsukushima Shrine's floating torii gate on Miyajima Island.
Rated Great 4.2 / 5 · verified reviews
The eSIM was easy to install. It gave plenty of data and cost a reasonable amount. From Keflavik to Hofn I basically did not lose service once.
Easy to use and great coverage in Canada & USA for the price.
The internet quality of the eSIM was impressive, just as I had expected, and the setup process was extremely straightforward.
eSIM stands for “embedded SIM”, because everything you need is digitally built into your smartphone or tablet. Think of it as the evolution of the SIM card - it’s just like your old SIM, but better! Now there are no tiny holes or bits of plastic to deal with, so you never have to think about swapping out SIM cards again. Wave goodbye to the old and say hello to the future of mobile connectivity!
You can’t make regular network calls or send SMS with your eSIM, but you can keep your existing SIM active if you still want access to these services. Just make sure you confirm any charges with your network provider before you travel. And remember, while breeze eSIM plans are designed just for data, you can still use messaging and voice apps like WhatsApp, Messenger, iMessage and more. These apps all work great with the data connection your breeze eSIM provides.
Setting up your eSIM is easy, and we’ll send a step by step guide after purchase. Or, you can head to our eSIM installation guide here.
First, you need to make sure you’ve got a reliable internet connection, so make sure you’re connected to Wi-Fi. Go to Settings > Mobile Data > Add Data Plan. This can vary depending on your model, so if you can’t see this option, find your steps here.
We’ll send you regular updates and you can check the data used on your eSIM in the My Account area of your breeze login.
Yes. Breeze connects to KDDI, providing coverage across all major cities, suburbs, and well-travelled highways in Japan.
Japan eSIM connects to KDDI. Your device automatically connects to the strongest available signal.
Your validity begins the first time your eSIM connects to a network in Japan — not when you purchase or install it. Install before you fly and activate when you land.
If you need more data while travelling in Japan, log in to your breeze account, select your active eSIM, and choose the top-up option to add more data.
Absolutely. Your Japan eSIM provides excellent coverage in Tokyo, Kyoto, Osaka and Hiroshima.
Setup help, troubleshooting, or account questions — we're here.
Before you checkout, let’s make sure that your device is eSIM compatible.
Find your device below to see if it is eSIM compatible. If your device is not listed you will not be able to install an eSIM. Not sure what your device model is? Click here to find out.
Device types
Check compatibility
Scan the QR code below with the device you plan to use.
