SIM Only Deals

All major networks in the UK offer SIM Only deals. Choose a network below to compare deals:

SIM Only contracts have a number of advantages. For one thing, they’re cheaper than getting a contract that includes a new phone. They’re also almost always shorter term, generally coming in at either 30 day rolling contracts or 12 months, so you have more freedom and flexibility to change your tariff.

SIM Only contracts are also ideal if you’re happy to keep your current phone – or want to buy a new one outright rather than paying for it monthly.

You’ll almost certainly need a nano SIM, which is the smallest of the removable SIM card sizes. Though if you have a very old phone or a feature phone rather than a smartphone then there’s a chance you could need a mid-sized micro SIM or a large standard SIM.

However, the UK’s networks supply trio SIMs with all three options, so you don’t have to choose your SIM card size when placing your order.

The only time you do need to choose at checkout is if you want an eSIM instead — though even then, you can typically switch to an eSIM later.

• Which SIM size do I need?

Although you’re not always tied in for long on a SIM Only contract, it’s still preferable to choose the right network first time round, and beyond costs you may want to consider their coverage

Coverage

All of the UK networks have widespread 4G and 2G coverage, with 5G being quite widely available too, though a bit more variable.

All the networks listed on this page offer 5G SIM Only plans in the UK, and 5G comes at no extra cost — though a few networks do have speed caps on some plans, so watch out for those.

Yes, a number of networks offer SIM only plans with no credit check, which are great for those who don't want a credit check conducted or have bad credit. You can visit this page for a full list of your options.

Every network on this page other than Spusu offers unlimited data SIM Only plans at the time of writing. However, there are various restrictions that may apply, so check the small print.

• Browse unlimited data plans