Compare Tesco Mobile SIMs: 12GB for £9, 60GB for £12
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Find out which choices on Tesco's SIM only came top of our comparisons against every other UK network this month. Last updated: 31st October 2025.
Tesco best SIM only deals
Our highest-rated SIM only deal on Tesco Mobile this month
just
£9
a month
✔ Unlimited mins and 12GB data See full deal
at tescomobile.com
(opens in new window)
We'd say the best SIM only plan Tesco Mobile are selling this October is their discounted 24‑month 12GB deal below, which comes in at £10 £9 a month and includes unlimited minutes and texts too:
That means a total saving of £24 when you add up the £1 discount over 24 months.
It's a good enough deal to get into Tesco's best SIMs but you can actually get a lower price for a similar plan elsewhere, even if you definitely want it to use the O2 network. See which networks that are cheaper here:
Tesco's £12 for 60GB is our next best choice now
just
£12
a month
✔ Unlimited mins and 60GB data See full deal
at tescomobile.com
(opens in new window)
If you want more data, the next best SIM only plan on Tesco Mobile in our opinion is their discounted 24‑month one below. For £15 £12 a month, you get 60GB data, plus unlimited minutes and texts:
In total, that discount of £3 a month means you’re looking at a saving of £72 over the 24‑month deal.
In comparison to the rest of Tesco's current SIM only plans, it's one of the best. But it is beatable on price, even if you're set on joining a provider that uses the O2 network. Here's where else you can get a lower price:
Their £25 SIM with unlimited data is our next favourite this October
just
£25
a month
✔ Unlimited mins and unlimited data See full deal
at tescomobile.com
(opens in new window)
For even more data, another good deal on Tesco Mobile at the moment is their discounted £25 SIM only plan here, which includes unlimited data instead, plus unlimited minutes and texts:
It does enough to get into our pick of Tesco's best SIMs but that doesn't mean it's unbeatable on price. Other providers (even ones that use the O2 network) can beat it. See who's offering it for less here:
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How Tesco Mobile’s benefits and SIM only prices compare
In our review of Tesco Mobile we said we liked the fact that you get access to O2’s great mix of coverage, as well as O2’s fast 5G network. They offer the same coverage experience as being on O2 directly.
You can take a 1-month, 12-month or 24-month contract. Usually, the longer the contract the less you’ll pay each month, but it’s worth comparing plans here to check for any special deals on different plans.
Tesco tend to offer good value on mid-range data plans. And if you’ve got a Clubcard you can get better value deals than their regular range, but only on certain tariffs. They typically offer better value than O2.
One massive benefit is that you can collect Clubcard points from shopping at Tesco stores to get money off your monthly bill and vice versa. And you get extra benefits for adding other users onto your account.
Useful link: Read our full Tesco Mobile review
Handy information about Tesco’s SIM only plans
Your Tesco Mobile SIM will be delivered within 1-5 working days (depends where you live and when you ordered). Or you can take one from a Tesco store. You’ll get every size of SIM, but you can’t get an eSIM.
You’ll have 14 days after your SIM arrives to return it if you’re not satisfied. You’ll get a full refund, even if you’ve used some of your data. Here’s how you can do it.
To join any Tesco SIM only contract you’ll have to pass a credit check. If you’ve got a bad or no credit history you can still join them by taking out a “Rocket Pack” which are bundles of mins, texts and data.
To keep your number when switching to Tesco Mobile from another network, you can request a PAC from you current provider and send it to Tesco whenever.
Useful link: Compare all Tesco SIMs