Know what’s left.
Check your remaining data before your next day out — remaining, total and spent, for each package on your eSIM.
The onesim appYour travel data.
Using Android? Get it on Google PlayUsing an iPhone? Download on the App StoreFree · iOS and Android · iPhone detectedFree · iOS and Android · Android detectedFree · iOS and Android · choose your storeFree · iOS and Android · scan or choose your store
Scan to download the appOpens the right store for your phone. App download only — not an eSIM install code.
Your travel data.
Always within reach.
Check your remaining data, manage your packages, and get ready for your next trip — all in the onesim app.
Scan to download the appOpens the right store for your phone. App download only — not an eSIM install code.Your eSIM
Europe 5 GBActive
Expires Sep 14, 2026Remaining3.42 GBof 5 GB
Japan 3 GB15 days after activation›
Buy another package
PackageseSIMAccount
Europe 5 GBValidity30 daysCountries39
Install eSIM
Already installed? Your package is added to the same eSIM.Already bought on our website?
Sign in to the app with the same email address you used for your purchase. Your eSIM and package will be available in that account.
You can also access your eSIM through your purchase confirmation or email. Installing the app doesn’t sign you in or move a purchase to another account.
One eSIM, every trip. The app keeps it in order.
onesim is one reusable eSIM with regional packages. You don’t install a new eSIM for every country — you add a package. The app is where that lives.
Keep your packages together.
Access your eSIM and manage your travel packages in one place — active, not yet started, and finished.
Get ready for the next trip.
Choose another regional package when it’s time to travel again. It’s added to the eSIM you already have — nothing to reinstall.
From download to ready to go.
Downloading the app and installing an eSIM are separate steps. Existing customers keep their existing account and eSIM.
- 1
Get the app.
Download onesim for your phone from the App Store or Google Play.
- 2
Sign in.
Already purchased? Use the account associated with your order — the same email you verified at checkout. New to onesim? Create an account to get started.
Can’t find your purchase? - 3
Open your eSIM.
Access your package and follow the installation guide if you haven’t installed your eSIM yet. Already installed? Your package is on it — nothing to reinstall.
Installation guide
Good to know.
The app is optional; the eSIM is what gets you online.
No. You can buy on the website and receive an email with a link to access your eSIM. The app is optional — it makes installation easier and lets you check remaining data and top up.
Website purchases come with an “Access your eSIM” link by email; request a fresh one from the recovery page if it expired. In the app, sign in with the same email address you used at purchase. Can’t find your purchase?
No. Downloading the app and installing an eSIM are separate. Install from your order page or from the app, on Wi-Fi, before you travel. Installation guide
Yes. Every account has one eSIM for good: keep it on your phone and buy a package for the next destination — it is added to that eSIM. Each package has its own coverage, allowance and validity.
Most phones from 2019 on support eSIM, and the phone needs to be carrier-unlocked. The quickest way to be sure is to check your model in the compatibility guide before you buy. Check compatibility
Ready for your next trip?
Keep your eSIM and travel packages close at hand.