The best deals on Tesco Mobile's SIM only in January 2025
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Compare pricing on Tesco's SIM only this month vs all the other UK mobile networks. We've identified their best options. Last updated: 15th January 2025.
Tesco best SIM only deals
The best SIM only deal on Tesco Mobile this month
just
£20
a month
✔ Unlimited mins and unlimited data See full deal
at tescomobile.com
(opens in new window)
Out of all the SIM only plans available this January on Tesco Mobile, we'd say their best value deal is their discounted 24‑month SIM below, which gets you unlimited data, plus unlimited minutes and texts for £25 £20 a month:
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £25 £20 a month (24‑month contract)
See full deal
🛈 No annual price rise for Clubcard holders
It’s a discount of £5 a month against the full price, adding up to a £120 saving over the 24 months.
It might not be the lowest-cost SIM only deal with unlimited data on the entire market but if you're sure you need a SIM using the O2 network, it is the best-priced. Here are other networks you can beat it on:
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £16 £8 a month for 6 months, then £16 (24‑month contract)
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Unlimited minutes + Unlimited texts + Unlimited data (5G) = £18 £0 a month for 3 months, then £18 (24‑month contract)
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Unlimited minutes + Unlimited texts + Unlimited data (5G) = £20 £16 a month (1‑month plan, no contract)
See full deal
🛈 No annual price rises
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £16 a month (1‑month contract)
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Unlimited minutes + Unlimited texts + Unlimited data (5G) = £26 a month (12‑month contract)
See full deal
🛈 Annual Price Increase: monthly plan increases annually on 1 April by £1.80
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £20 a month (24‑month contract)
See full deal
Or their £13 for 60GB SIM plan is worth a look too
just
£13
a month
✔ Unlimited mins and 60GB data See full deal
at tescomobile.com
(opens in new window)
If you need less data, you might like the discounted £15 £13 SIM only deal running on Tesco Mobile at the moment. It's a 24‑month plan, which comes with 60GB data, unlimited minutes and texts too:
Unlimited minutes + Unlimited texts + 60GB data (5G) = £15 £13 a month (24‑month contract)
See full deal
🛈 No annual price rise for Clubcard holders
That discount will save you £2 a month, which adds up to £48 over the course of the 24‑month deal.
If you don't need your SIM to be on a provider that uses the O2 network, you can beat this deal elsewhere. But if you do, it's the cheapest 60GB data or more option. See the networks with cheaper plans here:
Unlimited minutes + Unlimited texts + 60GB data (5G) = £10 a month (12‑month contract)
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Unlimited minutes + Unlimited texts + 80GB data (5G) = £10 £5 a month for 6 months, then £10 (24‑month contract)
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Unlimited minutes + Unlimited texts + 100GB data (5G) = £9.95 £4.98 a month for 3 months, then £9.95 (12‑month contract)
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Unlimited minutes + Unlimited texts + 120GB data (5G) = £10 a month (12‑month contract)
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Unlimited minutes + Unlimited texts + 40GB 80GB data (5G) = £10 a month (1‑month plan, no contract)
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Unlimited minutes + Unlimited texts + 25GB 60GB data (5G) = £16 £10 a month (12‑month contract)
See full deal
Tesco are also offering 12GB for £9 on SIM only
just
£9
a month
✔ Unlimited mins and 12GB data See full deal
at tescomobile.com
(opens in new window)
For a smaller amount of data, we'd say this is one of Tesco's best deals on SIM only this month too. It's a discounted 24‑month plan, comes with 12GB data, unlimited minutes and texts for £10 £9 a month:
Unlimited minutes + Unlimited texts + 12GB data (5G) = £10 £9 a month (24‑month contract)
See full deal
🛈 No annual price rise for Clubcard holders
That’s £24 you’ll save over 24 months with the deal thanks to the £1 monthly discount.
Compared to Tesco's other deals, this comes out among the best. But it's worth knowing you can get a lower price elsewhere, even on other providers that use the O2 network. Here's which other networks can beat it:
Unlimited minutes + Unlimited texts + 25GB data (5G) = £8 £4 a month for 12 months, then £8 (24‑month contract)
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Unlimited minutes + Unlimited texts + 20GB data (5G) = £9.90 £6.90 a month (1‑month plan, no contract)
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Unlimited minutes + Unlimited texts + 50GB data (5G) = £7.95 £3.98 a month for 3 months, then £7.95 (12‑month contract)
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Unlimited minutes + Unlimited texts + 40GB data (5G) = £7 a month (1‑month contract)
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Unlimited minutes + Unlimited texts + 20GB data (5G) = £8 £4 a month for 6 months, then £8 (1‑month plan, no contract)
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Unlimited minutes + Unlimited texts + 16GB 50GB data (5G) = £8 a month (1‑month plan, no contract)
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Unlimited minutes + Unlimited texts + 40GB data (4G) = £8 a month (12‑month contract)
See full deal
🛈 Increased to: £9.00 on April 1 2025
Unlimited minutes + Unlimited texts + 25GB 40GB data (5G) = £16 £8 a month (12‑month contract)
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Unlimited minutes + Unlimited texts + 20GB data (5G) = £22 £8 a month (12‑month contract)
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Unlimited minutes + Unlimited texts + 15GB data (5G) = £9 a month (24‑month contract)
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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