£19.50 / month

O2 Unlimited Mobile eSIM

Unlimited data, SMS and calls on O2 with a simple 30-day UK business eSIM. Activate your plan in minutes and enjoy strong nationwide coverage.

Ultimate freedom with unlimited data + EU roaming. Find out more.

Get an O2 Business eSIM from gosimless
O2 Unlimited Mobile eSIM from gosimless

Why choose O2 Unlimited plan?

Ideal for heavy users who want ultimate freedom without having to track data usage. Inclusive 35GB data roaming in Europe.

Why choose O2 Unlimited? 🤔

💸

£19.50 / month

🔄

30-day rolling contract

📞

Unlimited UK calls and texts

📶

Unlimited UK inclusive data

‍✈️

EU roaming included up to 35GB

🚀

5G speeds at no extra cost

📲

Keep your old number

🤝

Cancel at any time

💷

Transparent pricing, no hidden fees

👩‍💼

Dedicated support team

Sign upContract info

Who the O2 Unlimited eSIM is suitable for

The O2 Unlimited eSIM plan is built for users who want ultimate freedom without having to track or monitor their data usage. Powered by the trusted UK network O2, this plan is ideal for heavy data users, remote workers, frequent commuters, and professionals who regularly stream content, use video calls, and rely on mobile data throughout the day without wanting to worry about data limits.

With unlimited data subject to a 650GB Fair Usage Policy per calendar month, you can confidently use data-heavy apps such as video streaming, video conferencing, cloud services, navigation, and social media without constantly checking your usage. gosimless makes activation simple and instant, allowing you to download your eSIM digitally and get connected within minutes, with no physical SIM card and no long-term contract.

Inclusive roaming in Europe means you can continue using upto 35GB of data when travelling across Europe without worrying about extra charges. In addition, you receive an allowance of 2000 minutes and 2000 texts per calendar month for making UK to Europe calls and SMS.

Full online management gives you the flexibility to downgrade or switch plans if your usage changes. The O2 Unlimited eSIM offers the ultimate in mobile data freedom, providing dependable UK coverage and the flexibility modern users expect from a digital mobile plan.

If you're interested in inclusive international roaming to more than 20 international destinations such as the USA, Australia, Canada, and New Zealand - as well as inclusive roaming in Europe - you can go for our Vodafone Unlimited plan.

Frequently asked questions

This plan is ideal for heavy data users who want ultimate freedom without having to track data usage. Perfect for remote workers, commuters, and professionals who regularly stream content, use video calls, and rely on mobile data throughout the day without wanting to worry about data limits or counting usage.

Your unlimited data can be used on anything, including in your browser to surf the web and on any app. Unlimited data supports frequent video streaming, video conferencing, cloud-based work, navigation, social media, and everyday browsing without quickly running out of data. Be aware that the unlimited data plan includes a Fair Usage Policy of 650GB for domestic usage per calendar month.

Once you purchase the plan, you receive a QR code that can be scanned on your eSIM-compatible device. Follow the on-screen incstructions to complete set-up. Activation usually takes just a few minutes.

Yes. The plan is completely contract-free, with 30-day recurring billing that renews every 30 days. This gives you the flexibility to change or cancel without long-term commitments.

Yes. The O2 Unlimited eSIM includes inclusive roaming across Europe, allowing you to use upto 35GB of data while travelling without additional roaming charges. You get to make and receive unlimited calls and SMS locally in the roaming destination. You also get to make 2000 call minutes and send 2000 SMS messages from Europe back home to the UK.

If you find that unlimited data is more than you need, you can easily downgrade to a 50GB or 20GB O2 eSIM plan through gosimless. To avoid excessive charges, all mobile plans come with a £1 spend cap by default.

Most modern smartphones support eSIM technology. It is recommended to check your device specifications before purchasing.