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UK eSIM from O2

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 O2 eSIM Cards?

Built for Modern Connectivity, Designed for Simplicity

Our O2 eSIM services offer you the convenience of simple activation instantly, with a range of flexible plans to choose from that operate on a leading network provider. 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 o2 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
Travel app illustration

Frequently asked questions about eSIM

To install the eSIM, visit our website and choose any O2 travel or O2 Europe roaming plan you want. Scan the QR code after receiving it, and your eSIM will be installed.

Yes, you can easily purchase data plan O2 without other features for only browsing, streaming, and any work needs.

You can contact our support staff through chat or email in case of any doubt or to solve any issues regarding your eSIM.

To check if your O2 UK data plans is active, go to your settings and enter data/cellular, and check that the active carrier is still functioning.

Yes, eSIM Cards offers plans with O2 unlimited data and transparent roaming costs O2, so you stay connected without surprises.

Yes, we provide information on O2 international prices to help you choose the best plan for travel.

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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