Shop pay monthly SIM deals at O2, and enjoy unlimited minutes & texts, speedy 5G, O2 Priority perks, O2 WiFi hotspots, and more.

Want a SIM only deal for your mobile phone? With great data deals, fantastic rewards and inclusive EU roaming, an O2 SIM could be the ideal choice for you.

Compare SIM-only deals on O2, including cheap SIM deals and SIMs with high data, and find the plan for you.

Find and compare cheap O2 SIM only deals that offer a package of minutes, texts and mobile data for a monthly cost. Get the best deals with MoneySuperMarket.

Compare the best O2 SIM only deals which includes minutes, texts and mobile data for a monthly fee without a phone. O2 SIM only deals are normally cheaper than a traditional mobile phone contract.

Compare with Go.Compare to find O2's best sim only deals, which include offers with unlimited data. Get value and connectivity from a leading network.

Compare O2 SIM only deals from Confused.com. Find and compare the cheapest deals from O2

Find the best O2 SIM Only Deals in December 2025, including 30-day, 5G and unlimited data plans

See how we rate each of the choices on O2's SIM only, compared with other UK mobile networks' closest plans.

Jan 26, 2025 · In this article, we’ll look at O2’s latest SIM-only deals, and how you’re able to get them. We’ll also look at their other SIM-only plans (including Classic, Plus and Ultimate plans), and how …