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Why Choose a Three UK eSIM

Three is one of the UK’s top mobile networks, providing high-speed data, reliable 5G coverage, international roaming, and affordable eSIM plans. With a Three UK eSIM from Sim Local, you can stay connected effortlessly, whether you're streaming, navigating, or keeping in touch at home or abroad.

✅ Unlimited Possibilities: Enjoy massive data allowances with unlimited calls and texts in the UK, plus data roaming in over 70 destinations - all at unbeatable rates.

✅ Fast 5G Speeds, Everywhere: Three UK provides strong coverage and unlimited 5G speeds, ensuring a smooth mobile experience across the UK and beyond.

✅ Switch Plans, Not SIM Cards: Get online in minutes with a Three UK eSIM from Sim Local—quick, easy, and digital.

✅ Roam Without Roaming Charges: Take advantage of Three’s generous international roaming options, helping you stay in touch without the stress of hefty roaming charges in over 70 destinations worldwide.

Find My Plan

  • Pinpoint the perfect eSIM plan in seconds!
  • Personalised recommendations for your trip.
  • An even faster way to escape roaming charges...

We’re Bringing
The Big Brands To eSIM

Why risk it with generic, own-brand plans? Sim Local connects you to the #1 network provider in more countries than anyone else. The result? A travel eSIM that actually works—or your money back.
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No Quibble Refunds
Get your money back if you change your mind!
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Trusted Local Networks
Enjoy priority speeds with a local eSIM plan—no more roaming delays.
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Help In A Hurry
Speak to us, we are available and online 24/7
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Connect Instantly
Get connected before you’ve even collected your luggage.
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Free Yourself Of Roaming Charges
Grab a pay-as-you-go eSIM plan for just 10% of roaming costs!
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Not Just ‘Data Only’
Calls and texts available (in popular destinations).
coin
No Quibble Refunds
Get your money back if you change your mind!
heart
Trusted Local Networks
Enjoy priority speeds with a local eSIM plan—no more roaming delays.
simhelp
Help In A Hurry
Speak to us, we are available and online 24/7
thunder
Connect Instantly
Get connected before you’ve even collected your luggage.
switch
Free Yourself Of Roaming Charges
Grab a pay-as-you-go eSIM plan for just 10% of roaming costs!
phone
Not Just ‘Data Only’
Calls and texts available (in popular destinations).

Top Questions About Three UK eSIM Plans, Answered

Can I buy a Three UK eSIM through Sim Local?

Yes. You can buy your Three UK eSIM online or in the Sim Local app, no shop visit needed. Pick a UK eSIM plan with data, calls and texts, or a global data plan if your trip covers more than one country. Activate it now, or whenever your trip starts.

How do I activate a Three UK eSIM purchased from Sim Local?

Once you’ve bought your plan, you’ll get your Three eSIM QR code. Scan it, use the direct download option, or add the eSIM manually in your phone settings. It only takes a few minutes. Our activation guides for iOS and Android walk you through every step.

Does a Three UK eSIM include roaming?

Yes. Data roaming in 70+ destinations is included at no extra cost, so you can use your data abroad without roaming charges. Check each plan for the full list of countries before you travel.

Does a Three UK eSIM from Sim Local support 5G?

Yes. Our Three UK eSIM plans connect to 5G where it’s available and to 4G everywhere else, from busy city centres to the quieter countryside. You’ll need a 5G-compatible phone to get 5G speeds.

Is a Three UK eSIM from Sim Local compatible with my phone?

It works with most eSIM-compatible smartphones, including recent iPhone, Samsung and Google Pixel models. Your phone also needs to be unlocked. Not sure? Use our compatibility checker before you buy.

Can I use my Three eSIM as a hotspot?

Yes. You can share your data with your laptop, tablet or a travel buddy’s phone using your personal hotspot. Hotspot data counts toward your plan’s allowance.

Is the Three eSIM pay as you go?

Yes. Every Three eSIM plan from Sim Local is prepaid. You pay once and use your plan for 30 days (or 90 on the unlimited plan). No contract, and no monthly bill waiting for you at home.

Does the Three UK eSIM come with a UK phone number?

Yes, our UK plans with calls and texts include a local UK number. That’s handy if you’re moving to the UK, studying here, or need to receive texts from a UK bank or landlord.

Is there a Three UK eSIM with unlimited data?

Yes. Choose unlimited data, calls and texts for 30 or 90 days. It’s a good fit for longer stays, remote work or anyone who streams a lot.

What’s the best eSIM for the UK if I’m only visiting?

It depends on how long you’re staying and how much data you use. For a short trip, a 20 GB or 100 GB plan on Three’s 5G network covers maps, messaging and social media easily. If you’re staying longer, the unlimited plans give you more freedom.

Three or EE: which UK eSIM should I choose?

Both are solid UK networks, so it comes down to where your trip takes you after the UK. If you’re travelling beyond Europe, eaither EE or Three UK eSIMs are a great fit. Data roaming in 70+ destinations is included, from the USA and Australia to Costa Rica and Brazil, at no extra cost. If you’re mostly staying in the UK, or only hopping over to Europe, an EE or a Three eSIM are a great fit, with plans that include EU roaming.