Travel eSIM: get your data sorted before you go
A travel eSIM is a prepaid data plan that you download to your phone as a digital SIM card. You buy it before your trip, install it with a QR code and use the internet when you arrive, with no plastic card.
Updated 9 November 2026
Why an eSIM is worth it when you travel
Outside your home region, data on your own mobile plan can get expensive. In countries such as Thailand, Turkey, the United States and the United Arab Emirates, EU roaming rules do not apply, and carrier roaming prices can be high.
With an eSIM you know the price and the amount of data in advance. You pay once for the plan and there are no monthly fees. Your own SIM can stay in the phone for calls and messages.
eSIM, roaming or local SIM?
| Travel eSIM | Your own plan (roaming) | Local SIM | |
|---|---|---|---|
| Getting it | Online before you leave | Already in your phone | In a shop or kiosk on arrival |
| Price | Shown in advance | Depends on your carrier and the country | Depends on the country |
| Works on arrival | Yes, if installed beforehand | Yes | Only after you buy and set it up |
| Your own number | Stays active alongside | Stays active | Often means swapping your SIM card |
| Best for | Most trips | Trips within your home region and light use | Long stays |
How it works
Choose a destination and data amount
Plans are fixed data plans or daily plans.
Install the eSIM before you leave
You get a QR code and clear instructions.
Switch the data on when you arrive
Select the eSIM for mobile data when the plane lands.
How much data do you need?
A rough estimate for one traveller. You get a more precise estimate from the calculator on each destination page.
- Maps, messages and occasional browsing: about 300 MB a day.
- Normal use, social media and a little video: about 800 MB a day.
- Lots of video or hotspot use: about 2 GB a day or more.
Where are you headed?
Choose a destination and see the prices. There are 89 to pick from.
Frequently asked questions
How much does an eSIM cost?
The price depends on the destination and the amount of data. For example, plans for Thailand start from 3.99 euros. You see exact prices in euros on each destination page, and you pay once with no monthly fees.
What is an eSIM card?
An eSIM is not a physical card but a SIM built into the phone, to which a plan is downloaded digitally. In everyday speech it is also called an eSIM card.
Can I use an eSIM and my own SIM card at the same time?
Yes, if your phone supports two plans. The eSIM then handles data and your own plan handles calls and messages.
Do I get a phone number with the Reissaa eSIM?
No. The plans include data. For calls you can use your own plan or apps such as WhatsApp.
Do I need an eSIM in EU countries?
If your own plan is from the EU or EEA, it is often enough, because inside the EU and EEA you use it at home-country rates. Your carrier may still limit the amount of data under a fair use policy. An eSIM is a good addition if you need a lot of data.
What is a prepaid eSIM?
A prepaid eSIM is a data plan paid for in advance and downloaded to your phone with a QR code. It has no monthly fee and no contract, and you know the price before the trip.