O2 SIM Only Deals

No deals available with a 1 Month term

Why choose O2 for a SIM Only deal?

O2 is the commercial brand of Telefonica UK Limited and is a leading digital communications company with the highest customer satisfaction for any mobile provider according to Ofcom. With over 23 million customers, O2 runs 2G, 3G and 4G networks across the UK, as well as operating O2 Wifi.

Check out the SIM Only deals from any of these UK Networks.

If you use a lot of mobile data then we have you covered, check out the today's best Unlimted Data SIM from across all available UK Networks.