eSIM & Roaming: How to stay online worldwide without a costly surprise

Q: Does my smartphone support eSIM?

Most newer smartphones (for example, iPhone from the XS onwards, Samsung Galaxy S20 and later, and Google Pixel from generation 3) support eSIM. Use our free eSIM checker on this page to check the compatibility of your exact model.

Q: How do I avoid roaming charges outside Europe?

Before entering a non-European country, switch off data roaming for your main SIM. Buy and install a local or regional eSIM in advance. As soon as you arrive, enable data roaming only for the eSIM profile.

Anyone travelling outside Europe knows the problem: the inclusive data allowance from your home tariff no longer applies and mobile providers’ roaming charges can rise dramatically. Often, just a few megabytes can cost several pounds. The solution to this problem is the eSIM (embedded SIM).

With an eSIM, you simply download a digital mobile profile for your destination country – without the hassle of swapping cards at the airport. In our guide, you will learn how to keep track of your data allowance, check whether your smartphone is compatible and find the best tariff for your next adventure.

Start eSIM tools & checkers

Select what you would like to check so you can stay online abroad safely and affordably (100% free):

The ultimate eSIM & roaming checklist

So that you do not suddenly find yourself without internet access or facing unexpected charges when you arrive at your holiday destination, work through these points before departure:

Checklist

Check compatibility: Does my smartphone have an eSIM chip? (Use our checker above.)
Check for a device lock: Is the phone unlocked for other networks (no SIM lock)?
Disable home data roaming: Before departure, switch off data roaming for your main SIM in the settings.
Buy & install the eSIM on Wi-Fi: Ideally, set up the eSIM at home or on hotel Wi-Fi using a QR code.
Assign the data line: In your smartphone settings, set the new eSIM as the primary source for "Mobile Data".

Case studies: how much money an eSIM can save

Case study 1: The business trip to the USA

Mr Smith is flying to New York for 7 days. His UK provider charges a hefty £29.99 for a "travel data bundle" with only 3 GB of data. If he exceeds this, he pays £1.49 per MB.
The solution: He uses our eSIM comparison tool in advance and buys a USA eSIM with 10 GB of data for just £15. He saves money, gets more than three times as much data and is online as soon as he lands.

Case study 2: Backpacking across Asia (Thailand, Vietnam, Japan)

Sarah is planning a multi-week trip across three Asian countries. In the past, she would have had to buy a local physical SIM card at each airport, swap the chip and lose valuable time.
The solution: She books a regional "Asia eSIM" that covers all three countries. The networks switch automatically when crossing borders, and her UK number remains active for emergency texts (for example, online banking verification codes).

Frequently asked questions (FAQ) about using an eSIM abroad

What is an eSIM and how does it differ from a normal SIM?

An eSIM (embedded SIM) is a chip built directly into your smartphone that can be digitally loaded with mobile network profiles. You no longer need a physical plastic card and can activate tariffs, especially for travel abroad, in seconds via QR code or app.

Can I use my normal SIM card and an eSIM at the same time?

Yes, most modern smartphones support dual SIM. You can keep your physical SIM card active for calls and texts on your usual number (be careful of roaming charges when receiving calls) and use the eSIM specifically for mobile data in your destination country.

Does my smartphone support eSIM?

Most newer smartphones, such as the iPhone from the XS series onwards, Samsung Galaxy S20 and later, or Google Pixel from generation 3, support eSIM. To be 100% sure, use our free eSIM checker at the top of this page.

How do I avoid roaming charges outside Europe?

The most important step: before entering a non-European country, switch off data roaming for your main SIM card. Buy and install a local or regional eSIM in advance. As soon as you arrive, enable data roaming only for the newly created eSIM profile in your settings.

Expertise in travel law & passenger rights

Our guides and generators are based on a strict assessment of current UK regulations (such as UK Regulation 261 (UK261)), relevant court judgments and UK consumer travel law. They are developed by Marc (Project Lead) & team to help travellers pursue their rights against airlines and travel organisers with confidence.

Important note: Our tools provide practical self-help for flight delays, hotel issues or rail disruption. They do not replace individual legal advice from a solicitor.

Learn more about our legal methodology & editorial process →

Problem with your flight, train or hotel?
Fix-My-Trip checks your entitlement to compensation, ticket refunds or a price reduction for travel services in just a few steps.
A service from Fix my Trip.

💡 Found an error in the tool? As we are an automated portal and do not provide individual legal advice, it helps us enormously if you report bugs or outdated providers: Send feedback to our central team.