One eSIM. Zero stress.

onesim™ keeps you online across the world with a single eSIM. No plastic, no roaming shock.

Download on App Store
Get it on Google Play
Coming soon
Hand holding phone displaying onesim™ app in app store

The best eSIM for travelers

Online in 60 seconds

Setup your eSIM through the app in seconds.

Worldwide coverage

One eSIM keeps you online in 190-plus countries, automatically choosing the fastest local network upon arrival.

Transparent pricing

Flat-rate daily, weekly, or regional passes—see total cost upfront and never fear surprise roaming charges again.

Keep your physical SIM

Keep your physical SIM active for calls and texts while onesim handles data, perfect for banking or two-factor logins.

In-app control

Track data in real time, top up with credit card, and switch plans without contacting customer support.

24/7 support

Reach live agents by WhatsApp or email anytime; average response under fifteen minutes, even during airport layovers.

How it works

1

Download the app

Download the app and sign up for an account.

2

Choose an eSIM data plan

Select the destination and choose your data plan.

3

Install your eSIM

Install the eSIM and enjoy your data.

Download the app

Download on App Store
Get it on Google Play
Coming soon
iPhone with onesim™ app