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What are the benefits of using an eSIM?

  • Instant setup

    An eSIM lets you connect to a mobile network without inserting a physical SIM card. It can make it easier to set up a mobile data plan, particularly when travelling.

  • Potential savings abroad

    Some eSIM providers offer data plans designed for travellers. These can cost less than using your UK provider’s roaming charges or buying international add-ons, although prices vary by destination and provider.

  • More network choice

    With an eSIM, you can choose a provider that offers good coverage where you are travelling. This means you are not limited to the roaming partners used by your home network.

How do I get started with an eSIM?

  • icon purple phone with 5g text

    Check your phone is eSIM compatible

    Most newer smartphones support eSIM, including recent iPhone, Samsung and Google Pixel models. Check your device settings or manufacturer website before comparing plans.

  • icon purple phone

    Compare and buy an eSIM plan

    Look at eSIM deals based on destination, data allowance and how long the plan lasts. Once you choose a plan, you will receive the details needed to install it.

  • Activate the eSIM

    Follow the instructions from your provider. This usually involves scanning a QR code or entering a manual activation code in your phone’s mobile network settings. Setup steps may vary depending on the device.

Our expert says…

If you're travelling abroad, an eSIM can be a cost-effective way of spending less on mobile data"

Ashton Berkhauer Home & Utilities Expert

Frequently asked questions

What is an eSIM?

An eSIM is a digital SIM that lets you connect to a mobile network without inserting a physical SIM card. Instead of swapping cards, you download a mobile plan directly to your phone and activate it through your device settings.

Can I use an eSIM and a physical SIM at the same time?

Yes, many modern smartphones support dual SIM functionality. This means you can keep your physical SIM for calls and texts while using an eSIM for mobile data, which can be useful when travelling abroad.

Are eSIMs cheaper than roaming?

They can be, depending on the destination and provider. Some travel eSIM plans offer multi-day data packages that may cost less than daily roaming passes from UK networks. However, prices vary, so it is worth comparing options before you buy.

Do all phones support eSIM?

No. Many newer smartphones support eSIM, including recent iPhone, Samsung Galaxy and Google Pixel models, but older devices may not. You can usually check compatibility in your phone’s network settings or on the manufacturer’s website.

Do I need internet to activate an eSIM?

Yes. You normally need a WiFi or internet connection to download and activate an eSIM profile. Once the setup is complete, you can use the mobile data from the eSIM plan.

Can I switch between eSIM plans?

Yes. Most phones allow you to store more than one eSIM profile and switch between them in your settings. However, only one eSIM can usually be active at a time, depending on your device.

Is an eSIM safe to use?

Yes. eSIMs use the same network security standards as traditional SIM cards. Because the SIM is built into your device, it cannot be physically removed if your phone is lost or stolen.

Can I remove or delete an eSIM?

Yes. You can delete an eSIM profile from your phone through the mobile network settings. If you want to use the plan again later, you may need a new activation code from the provider.

Are eSIMs better than physical SIM cards?

eSIMs are not always better, but they can be more convenient in certain situations. Because the SIM is built into your device, you can download and activate a mobile plan without inserting a physical card. This can make switching networks or setting up a travel data plan quicker, especially if you are abroad.

However, physical SIM cards may still suit some users, particularly if you frequently move your SIM between devices.

Can I use an eSIM when travelling abroad?

Yes. Many travellers use eSIMs to access mobile data when visiting another country. You can buy a travel eSIM plan for your destination and activate it before or after you arrive.

This allows you to connect to a local network without relying on your UK provider’s roaming services.

Will using an eSIM change my phone number?

Not usually. If you install a travel eSIM for mobile data, you can normally keep your existing UK SIM active for calls and texts.

Many phones support dual SIM functionality, meaning your physical SIM and eSIM can run on the same device at the same time.

How do I install an eSIM on my phone?

Most providers will send you a QR code or activation details after you buy an eSIM plan. You can install it by:

  • opening your phone’s mobile network or SIM settings

  • selecting the option to add an eSIM or mobile plan

  • scanning the QR code or entering the activation code

The exact steps may vary depending on your device

Can I keep more than one eSIM on my phone?

Many smartphones allow you to store multiple eSIM profiles. This means you can install different plans and switch between them in your device settings.

However, most devices only allow one or two eSIMs to be active at the same time.

Do I need to remove my physical SIM to use an eSIM?

No. An eSIM works alongside your physical SIM. Many people keep their UK SIM in their phone while using an eSIM for data when travelling.

This allows you to continue receiving calls and texts on your usual number while using a separate data plan.

Reviewed on 17 Mar 2026 by