Best iD Mobile SIM offers: 25GB for £6, 108GB for £9
The retailers featured on this page may compensate us when our readers follow links to their websites and make a purchase. More
See how iD compare on price this month vs the competition on SIM only. We've checked each of their plans to find the best. Last updated: 15th July 2026.
iD Mobile's best SIM only deals
The best SIM only deal on iD Mobile this month
just
£6
a month
✔ Unlimited mins and 25GB data See full deal
at idmobile.co.uk
(opens in new window)
Out of all the SIM only plans available this July on iD Mobile, we'd say their best value deal is their discounted 1‑month SIM below, which gets you 25GB data, plus unlimited minutes and texts for £6 a month:
iD's is actually the best-priced SIM only deal in the UK at the moment for 25GB data or more. No other providers can beat it for monthly cost. Here's each network's nearest plan:
Or their £9 for 108GB SIM plan is worth a look too
just
£9
a month
✔ Unlimited mins and 108GB data See full deal
at idmobile.co.uk
(opens in new window)
For more monthly data, you might like the discounted £10 £9 SIM only deal running on iD Mobile at the moment. It's a 1‑month plan, which comes with 108GB data, unlimited minutes and texts too:
That discount will save you £1 a month, which would add up to £12 over the course of a year.
You can't actually currently beat iD's prices there for a SIM only deal with 108GB data or more on any other provider. Here are the closest alternatives each network is currently offering:
iD are also offering 50GB for £7 on SIM only
just
£7
a month
✔ Unlimited mins and 50GB data See full deal
at idmobile.co.uk
(opens in new window)
For a smaller amount of data, we'd say this is one of iD's best deals on SIM only this month too. It's a discounted 1‑month plan, comes with 50GB data, unlimited minutes and texts for £7 a month:
There aren't any other networks with cheaper pricing on a SIM only deal with 50GB data or more than iD. If you want to see other providers' nearest efforts, use the dropdown below:
£20 Clubcard voucher (automatic, no need to claim)Compare all SIM only plans
Compare deals from all networks
How iD Mobile's deals compare with other networks
Networks
Providers:
Plan
Data: (0MB+)
Minutes: (0+)
Thanks, we'll send that out now. Please check your inbox for our email.More about iD's SIM only plans
How iD’s benefits and SIM only prices stack up
In our review of iD Mobile, we said we liked that they offered full access to Three’s network (including identical 5G speeds and coverage) on low-cost deals. And they have an excellent WiFi calling scheme as well.
You can choose either a 1-month, 12-month or 24-month contract on iD. It tends to be the case that longer contracts cost you less per month. But it’s still worth checking to see what their best current deals are.
iD tend to offer great value on all their SIM only plans, and the cost of your plan won’t increase during your contract so you can hold onto that value. They’re usually one of the cheapest ways onto Three’s network.
They’re fairly low-frills, but they do have a good data rollover scheme that lets you keep unused data for your next month. They also offer inclusive EU roaming. But they don’t offer much else.
Useful link: Read our full iD Mobile review
What else you should know about iD’s SIM only plans
Your iD Mobile SIM card will be delivered within 2-3 working days after ordering. You’ll get each size of SIM card in your package to fit any phone. iD don’t offer eSIMs yet (see the providers that do here).
When you order anything online you have 14 days to get a full refund, and this is also the case for SIM cards. Here’s how you can get a refund if you’re unhappy with your SIM.
You’ll have to pass a credit check to join iD, no matter if you want to join on a 1-month, 12-month or 24-month contract. If you’ve been rejected for a contract you can still join on a PAYG monthly bundle.
If you’re switching from one network to get onto iD Mobile then you can keep your number by requesting a PAC from your current provider to give to iD. Here’s more info on how to do that.
Useful link: Compare all iD SIMs