Unlimited data SIM deals

With our unlimited data SIM deals, you’ll never run out of data, so there’ll be no worries about going over your allowance or having to pay for extra data. Unlimited data means you can always stay connected – even when there’s no Wi-Fi. So, pull out your phone and get ready to stream, chat, browse, post, play and download – without limits.

Truly unlimited data

Shopping for SIM only deals with unlimited data? Or maybe it’s unlimited data phone contracts that you’re after, like on the iPhone 15 or the Samsung Galaxy S24 Ultra 5G? Either way, we’ll have what you’re looking for here at Tesco Mobile. Unlimited data means unlimited freedom to stream your favourite shows, catch up with friends and family on video calls, browse the Web, post on social media, and much more – without the need for Wi-Fi.

Bag a phone with an unlimited data plan

Grab an unlimited data SIM only deal

Why choose an unlimited data SIM?

No data limits, no speed limits

We promise not to slow you down just because you love data. Our unlimited data plans have no data limits and no speed limits.

Read our Fair Usage Policy

99% UK network coverage

Stay connected wherever you are, for as long as you want. We share O2’s network, so you’ll have 4G in 99% of the UK and 5G as it’s rolled out.

Check your coverage

No Wi-Fi? No problem

With unlimited data, you won’t need to rely on Wi-Fi to stay connected, as you’ll always have data at your fingertips.

Frequently asked questions

Yes. Our Unlimited Data plans have no speed limits and no data caps, so you can use data without thinking about it, as long as it’s for your personal use on your mobile. We want to make sure the network is fair for everyone, so we do reserve the right to monitor your usage and take action if you’re not following our Fair Usage Policy.

As long as you use your unlimited data for your personal use and on your own mobile, you’ve nothing to worry about. To find out more, you can read our Fair Usage Policy

Yes, you can get a pay monthly unlimited data tariff on 4G or 5G on phone and SIM only contracts.

You can use your Tesco Mobile unlimited data for personal use in mobile devices. You can’t use it in a home router for home broadband.

Yes. As long as it’s for your own personal use. To find out more, you can read our Fair Usage Policy

You can sign up to an unlimited data offer on our Mobile phone deals or SIM only contracts