SIM Only Deals
Compare 4G SIM Only plans and find the best deal for you.
- All UK mobile networks, including EE, O2, Three and Vodafone
- Unlimited data plans available
- Shorter contract lengths and keep your number
Looking for a data only SIM?
Compare Deals and save hundreds of pounds Sim Only Deals Phone Deals 
Compare 4G SIM Only plans and find the best deal for you.
Looking for a data only SIM?
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 days 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.
All major networks in the UK offer SIM Only deals. Choose a network below to compare deals:
| GiffGaff SIM Only |
Depending on what phone you have you might need a standard SIM (mostly used by older handsets), a micro SIM (used by many handsets made in the last few years), or a nano SIM (used by many of the newest handsets).
To be sure, you’ll have to check your handset, but the good news is that many networks supply a trio or combi SIM, which includes all three sizes. And if you ever change phone and need a different size SIM card you can either request one from your network or use an adaptor.
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
All of the UK networks have widespread 4G, 3G and 2G coverage. 5G has now launched on a couple of networks with the others due to launch before the end of 2019.
|
Network |
4G population coverage |
5G coverage |
|---|---|---|
|
EE The following also use EE's network: BT Mobile, Plusnet and Virgin Mobile |
over 99% |
Launched in 6 towns and cities |
|
Three The following also use Three's network: Smarty and iD Mobile |
99.8% |
Launched in 15 towns and cities |
|
O2 The following also use O2's network: GiffGaff, Tesco Mobile and Sky Mobile |
99% |
Launching in London in August |
|
Vodafone The follow also use Vodafone's network: Voxi |
99% |
Launching in 4 cities in 2019 |
Currently, EE, O2, Vodafone and Voxi offer SIM Only plans with 5G in the UK, while Three offer 5G Ready plans at no extra cost. You can find them quickly and easily using our helpful filter above.
EE, GiffGaff, iD Mobile, O2, Three, Smarty, Vodafone, Virgin Media and VOXI currently offer unlimited data SIM cards. However, there are various restrictions that apply.
