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Seamless Connection in Any Country You Visit

Why eSIM io?

Discover OneSIM

OneSIM by eSIM io offers an eSIM valid worldwide with pay-as-you-go payment option

  • One eSIM valid in over 160 countries

  • Pay‑as‑you‑go or choose a 30-day data plan

  • io Balance never expires

Astronaut and a planet

This Is What Our Users Say

Punishments

No issues at all

I bought it for half the price of other service providers, used it on a trip to Copenhagen in April 2025, and had no problems. I just have to recommend it. I was very satisfied.

Murat Yılmaz

Kudos to whoever did this

Kudos to whoever did this. I had no problems at all, I downloaded the program a week before going abroad. I chose the country I was going to and bought an internet package. It said it was waiting for activation. I started using internet as soon as I enter

Yasemin Ertepe

Great price and smooth connection

I travel a lot and always use eSIM io. It is affordable, easy to install, and works everywhere. Very practical for those who travel a lot. I definitely recommend it.

The Tetik

Amazing!

I bought 10 gb data for around $13. I use it in Germany. It is very efficient and was activated immediately. I felt the need to write this just as a guide for new users. iOS users, turn on international roaming from the settings when installing, otherwise

Ömer Maşalı

It is a very nice application

It is a very nice application, it gives you $5 on your first login, which means you get 3GB data for free (for 30 days) It will come in handy in difficult times, thanks again eSIM♥️

Akın Gürleyen

Great and affordable

Great and affordable

hsn_brk

Flawless Experience

Its installation and package selection are practical and its international internet connection and call quality is high.

Airdem737

Good coverage

I am pilot and i use it on several different contries during my flights. It worked good at all.

Mustafa Nazman

A great app

A great app that was a great help in our trip to Spain without any problems...

Use eSIM io mobile app for a better eSIM experience.

To download the app, open your phone's camera and scan the QR code. The eSIM io mobile app offers a great experience for usage notifications and balance managing and tracking.

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App Store QR Code for eSIM.io

How Does eSIM io Work?

Step 1

Download the eSIM io app

Step 2

Pay as you go or purchase a plan

Step 3

Top up io Balance to your account

Step 4

Add OneSIM to your phone just once and do not remove it

Step 5

Easily track your usage