UK eSIM Guide 2025: Best Plans, Providers and Setup

Travelling to the UK and want to stay connected? A UK eSIM makes it easy to access local mobile networks without a physical SIM card.

Our guide covers the main aspects of using a UK eSIM, including the best plans, how eSIMs work, comparisons between providers, tips on buying and using them while travelling. You will also find recommendations for different needs and reviews from verified travellers.

Get ready to make your trip smoother and stay connected effortlessly, explore the options and choose the UK eSIM that suits you best.

Best UK eSIM Plans

How Does eSIM Work in the UK?

An eSIM is a digital SIM built into your device, letting you connect to a mobile network without a physical card. You activate it by scanning a QR code from your provider to download a digital profile, which allows calls, texts, and data.

Key Benefits:

• Convenience: No need for a physical SIM; setup is quick and easy.
• Dual SIM: Use multiple numbers or networks on one device.
• Travel-Friendly: Switch to local data plans abroad without changing SIMs.
• Secure: Cannot be physically removed if your device is lost.
• Eco-Friendly: Reduces plastic waste from SIM cards and packaging.

How to Get and Use:

1. Buy a plan from a UK provider that supports eSIM.
2. Receive a QR code or download link.
3. Activate in your device settings and start using your UK data, calls, and texts.

Comparison of UK eSIM Providers

In the UK, eSIMs are offered by major networks such as EE, O2, Three, and Vodafone, as well as smaller providers like Giffgaff, Lyca Mobile, iD Mobile, and Voxi.

For travellers or short-term use, specialised providers such as Nomad, Saily, Maya Mobile, and Airalo offer data-only eSIM plans.

Choosing the right eSIM depends on whether you need data only, calls and texts, the plan duration, and your budget. The table below summarises main UK eSIM providers to help you find the best option.

*Data plans and prices may vary; please refer to the latest information on the provider’s official website.

👇 Going to the UK for a short trip? Trip.com eSIM makes it easy:

• Works with major UK operators: Three(5G)/Vodafone(5G)/EE(5G)/O2(5G)/Sure(LTE)
• 1–30 days validity, choose daily or total data packages (1GB/day or up to 30GB)
• Instant QR code delivery, activate anytime
• Supports 4G/5G and hotspot sharing
• Can be reinstalled up to 10 times on the same device

Which eSIM Is Best for the UK?

The best UK eSIM depends on your needs. Saily is a strong all-round option with reliable internet, quick setup, and extra privacy features. If you’re looking for the cheapest choice, eSIM4Travel offers very low-cost plans for light users. For heavy data use or if you want fast 5G, Orange and providers on the EE network are excellent. Other options like Holafly, Nomad, and Airalo are also popular, with unlimited data or flexible travel packages.

UK eSIM Recommendations

Where to Buy UK eSIM?

1. Online

• Provider Websites/Apps: Buy directly from mobile networks like EE, O2, Three, and Vodafone, or from smaller providers such as Giffgaff, Lyca Mobile, iD Mobile, and Voxi.
• Specialist eSIM Providers: Services such as Holafly, Airalo, Maya Mobile, Nomad, Saily, and easySim sell data-only eSIMs. You choose your plan online and receive a QR code by email for quick setup.
• Travel Platforms: Sites like Trip.com also offer UK eSIMs that you can purchase before your trip.

2. At the Airport

• Sim Local: Available at London Heathrow, Gatwick, and other major airports, with kiosks and staff to help activate your eSIM.
• Mobile Carrier Kiosks: Counters from major providers like EE or Three can often be found in arrivals halls.
• Vending Machines: Some airports have eSIM vending machines for instant purchase.
• Retailers: Shops such as WHSmith sometimes sell SIM cards and may also provide eSIM options.

3. Stores & Dealers

• You can also buy eSIMs from authorised dealers and mobile phone shops across the UK.

How to Use UK eSIM When Travelling?

Before You Travel

1. Check Compatibility
Make sure your phone supports eSIM (most smartphones from the last 7 years do).

2. Buy a Plan
Choose a UK eSIM plan from a mobile operator (e.g. EE, O2, Vodafone, Three) or a travel provider (e.g. Trip.com, Holafly, Airalo, Nomad, Klook).

3. Install the eSIM

• Follow the provider's instructions to install the eSIM, or
• Trip.com App (iPhone iOS 17.4+): Go to Account → All Orders → Install for one-click installation.
• QR Code: In your phone settings, add a new eSIM and scan the QR code provided.
• Manual Entry: Enter the SM-DP+ address and activation code if given by your provider.

4. Set Your Data Line
In your phone’s settings, choose the new eSIM as your data line so it connects when you arrive.

When You Arrive in the UK

1. Keep Your Main SIM for Calls
You can leave your home SIM in your phone, but turn off its data to avoid roaming charges.

2. Activate the eSIM
In settings, switch on your UK eSIM and turn on data roaming.

3. Connect to the Network
Your phone will join a local UK network (e.g. EE, O2, Vodafone, Three). Use your data for internet, maps, or calls via apps like WhatsApp.

Troubleshooting (if data doesn’t work)

• Check that data roaming is enabled.
• Adjust the APN if needed:
• • Go to Mobile Data Network / Cellular Data Network
  • Enter APN: plus
  • Restart your phone.
• Remember: Each QR code can be installed up to 10 times if you delete the eSIM.

Is eSIM Better than a Physical SIM in the UK?

eSIMs offer more flexibility and convenience than traditional physical SIMs. You can have multiple numbers or plans on a single device, switch networks quickly, and avoid handling physical cards.

Physical SIMs, however, are tangible and can be easily transferred between devices, which some users prefer for convenience or perceived security.

The best choice depends on your priorities: ease of use and travel-friendliness, or simplicity and physical control.

eSIM vs Physical SIM in the UK

Trip.com UK eSIM Verified Traveller Reviews

It worked perfectly during my stay in London. I was able to share my hotspot with my partner and the signal was good. Very competitive price compared to other esim providers.

My sister recommended using an eSIM from Trip, so I gave it a try. The UK network was really terrible, but the eSIM from Trip still worked great. I think it's a solid choice!

The activation of this e sim package is quite convenient and easy. Seamless connection and internet connectivity once I landed in Heathrow.

Reliable signal with smart backup options, automatically switches networks when one is weak. Much more dependable than the local SIM I used (giffgaff, lyca…etc)

Very convenient eSIM connection service! Everything is easy, accessible, connected on a trip, was immediately in touch, thank you!!!🙏🏽

Highly Recommended for Travellers, Trip.com’s eSIM made my journey so much easier. Fast setup, stable internet, and great value. I’ll be choosing this option again for all my future trips.

UK eSIM FAQs

How much does eSIM cost in the UK?
Prices vary from a few pounds to over £10 per month depending on the provider and data plan. Some providers offer eSIMs free for existing customers, while others may charge for certain plans.

Can you get a UK phone number with an eSIM?
Yes, UK eSIMs from providers like EE, Vodafone, or Lyca Mobile can include a UK phone number. Some international eSIM providers also offer UK numbers.

Do eSIMs change your phone number?
No, installing an eSIM does not automatically change your phone number.

Do I turn off roaming when using eSIM?
Turn data roaming ON for your eSIM to use local networks, and OFF for your primary SIM to avoid high roaming charges.

Can you have both a SIM and an eSIM?
Yes, dual SIM-compatible devices can use a physical SIM and an eSIM at the same time.

Can I still use my WhatsApp with an eSIM?
Yes, WhatsApp works over data, so you can continue using your existing account while travelling with a data-only eSIM.

Popular eSIM Options in Other Countries/Regions

Find the most popular eSIM options for your next trip and stay connected wherever you go!