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UK eSIM from Three

Travel smart - get instant data with our easy eSIM setup

4.6/ 5

Rated 4.6/5 Excellent - Based on 7500+ Reviews

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Family Plan Savings

Add 2 plans to get 10% OFF, or 3+ plans for 15% OFF!

10%
2 plans
15%
3+ plans

Looking for wider coverage?

Browse our regional and global plans starting at the prices below, each plan includes data access in your selected destination.

High-Speed Data

4G/5G networks in all covered countries

No Roaming Fees

One flat rate across all countries

Secure Connection

Encrypted connections for safe browsing

Why Choose eSIM

Why choose our Three eSIM Cards?

Built for Modern Connectivity, Designed for Simplicity

Our eSIM services offer you the convenience of simple activation instantly, with a range of flexible plans to choose from that operate on leading network providers such as Three Network. With it, you can enjoy wide coverage, fast and reliable connectivity for all your communication and data needs.

Local & Global Coverage

Access reliable major networks with our local and travel eSIMs, available across multiple countries.

Unlimited Data & Voice Options

Choose from flexible plans, including unlimited data and calling on supported eSIM plans.

Simple App-Based Management

Manage your eSIMs, plans, and activations easily through the app, available on both iOS and Android.

Instant Digital Activation

Buy online, scan a QR code, and activate within minutes. No physical SIMs, no store visits.

Seamless Setup, Powerful eSIM.

Select Country

Select Country

Choose Plan

Choose Plan

Make Payment

Make Payment

Activate your eSIM

Activate your eSIM

Receive Your eSIM Profile via Email or App

Once you purchase, you'll instantly receive simple instructions to install and activate your three eSIM and enjoy affordable data while you travel.

What's Included:

QR Code Installation Guide

Step-by-step App Instructions

Instant Activation Support

Live Chat & Email Support

View installation instruction
eSIM Cards app preview

One app. Endless travel possibilities.

Discover special offers on hotels, experiences, transport, and more- globally.

Download on the App StoreGet it on Google Play
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Frequently asked questions about eSIM

You can activate your eSIM by selecting your region and plan, completing payment, and scanning the provided QR code to install and activate the eSIM.

The plans for eSIMs that operate on three network start from £24.50. With eSIM Cards, you can customise your plan as per your needs, like a monthly, quarterly, half-yearly, or yearly subscription. For customers searching “Three Near Me,” our platform ensures easy online access without needing a store visit.

You can easily contact our support staff, that's willing to help and guide you through at any given time regarding any issues with the eSIM.

A lot of modern devices are compatible with an eSIM nowadays. This includes all the newer models from Apple, Android, Google Pixel, and so on. Because of this, it is easy for 3 network users to stay connected.

Yes, you can easily use the hotspot with your eSIM plan and share your Three unlimited data across devices.

Yes, you can get a contract-free eSIM that operates on Three through eSIM Cards.

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Your trusted provider for global eSIM solutions.

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Contact

Pentagram Systems Limited


27 Old Gloucester
St London WC1N 3AX, UK

Email: support@pentagramsystems.co.uk

Phone: +442045113780

© Pentagram Systems Limited 2026