Compare Tesco Mobile SIMs: 6GB for £6, 10GB for £10
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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: 7th October 2026.
Tesco best SIM only deals
Our favourite SIM only deal of the month on Tesco Mobile
just
£6
a month
✔ Unlimited mins and 6GB data See full deal
at tescomobile.com
(opens in new window)
Looking at what you can get on SIM only with Tesco Mobile this October, our best-rated deal would be their discounted 12‑month plan below, which comes with 6GB data, plus unlimited minutes and texts for £6 a month:
Even though it's in our pick of Tesco's best SIM only deals, you can actually beat it on price with other providers, including ones that also use the O2 network. See the networks that beat it here:
Tesco are also offering 50GB for £10 on SIM only
just
£10
a month
✔ Unlimited mins and 50GB data See full deal
at tescomobile.com
(opens in new window)
To get more data, we also think this discounted £10 Tesco Mobile SIM is one of their best options. It comes with 50GB data, unlimited minutes and texts on a 1‑month deal:
While this is a good enough deal to make it into the best of Tesco's SIMs, you can beat it for price (even if you definitely want a provider that uses the O2 network). Here are the networks where it'd cost less:
They've also got a unlimited data for £17 SIM plan at the moment
just
£17
a month
✔ Unlimited mins and unlimited data See full deal
at tescomobile.com
(opens in new window)
For people who need even more data, Tesco's discounted £17 SIM below is another of their best deals this month. For £17 a month, it offers unlimited data, unlimited minutes and texts on a 24‑month plan:
It's actually possible to beat this deal if you're not fussed whether your SIM is with a provider using the O2 network. But if you are, it is the current best-priced option. See which networks that are cheaper 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