Over the past few years, SIM-only contracts have seen something of a resurgence. On this page we'll bring you the best SIM only deals from EE, Three, Vodafone, O2, Giffgaff and more with our regularly updated guide.
There are a huge variety of SIM only deals, most of them for 12 months but some offering monthly rolling contracts, letting you cancel anytime.
SIM-only is much more affordable than a conventional phone contract and is an attractive option if you already have a phone you can use or if you'd rather buy an unlocked phone from elsewhere.
Compare the best SIM only deals
Couldn't find a SIM deal above? Here you can compare all the best SIM only deals available right now. You can use the sliders and menus to choose the best deal that suits your needs.
Can't see the widget? Click here to see the full comparison widget.
UK network coverage checkers
Below you'll find links to the four coverage checkers you need. Why four? Because any other network is an MVNO (Mobile Virtual Network Operator), which means they don't have their own masts and signal, they use the networks provided by Vodafone, EE or O2. GiffGaff and Tesco mobile, for instance, uses O2's network, while BT Mobile uses EE's.
Or, if you'd rather go independent, you can try Ofcom's mobile signal checker.