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Asda Mobile 
EE 
GiffGaff 
iD Mobile 
Lebara Mobile 
O2 
Sky Mobile 
Smarty 
Spusu Mobile 
Talkmobile 
Tesco Mobile 
Three 
Vodafone 
Voxi SIM plans under a fiver
- Compare SIM plans under £5 a month
- Find the best deal on all UK networks
- Keep your number
SIM Only plans are the best way to save money on your bill for those who are happy with their phone, or comforable with buying it outright.
You can get deals for as little as £1 a month and there are a lot of plans available for under a fiver.
Right now Asda Mobile, Lebara, Spusu, Smarty, Talkmobile, Three and 1pMobile all offer SIM plans for under £5 a month.
We've handpicked some of the best deals for under £5 available today. However, we'd also recommended checking out all the plans under a fiver using our comparison engine.
1. Spusu - 5GB data for £1 a month
Our best value deal right now is on Spusu, who use EE's network, where you can get 5GB data, unlimited minutes and texts for just £1 a month for the first 4 months (then £5 a month).
That's on a 1-month contract giving you flexibility to cancel anytime you like.
2. Smarty - 40GB for £5 a month
Those looking for more data should consider Smarty's 40GB, unlimited minutes and texts deal for £ 5 a month for the first 3 months. It'll cost £10 a month after that, but it's only on a 1-month contract so you can cancel anytime you like.
On Smarty, who use Three's network, you'll also be able to enjoy free roaming in the EU and no annual price rises.
3. Three - 3GB for £5 a month
If you'd prefer to choose a more established network with physical stores then Three are a great option.
For £5 a month you can get 3GB of data, unlimited minutes and unlimited texts on a 12-month contract.
Yes, it's quick and easy to transfer your number to a new network.
Just order your SIM deal and then text 'PAC' (from your old number) to 65075, or alternatively call your current network, tell them you’re leaving and ask for your PAC code.
Pass this code on to the network you’re joining and your number will be ported, usually within the next working day. Just make sure you don’t delay too long in handing the code over, as they expire after 30 days.
Read our full guide to keeping your number
The main UK networks increase prices each April. However, out of the networks offering SIM deals for under £5 a month it's only Three who would increase prices, who increase prices by the Consumer Price Index +3.9% each April.
The good thing about choosing 30-day or Pay As You Go plans is you arn't locked into a long-term contract, so if you are worried about prices increases that is a good way to go.
