Tesco Mobile SIM only deals for January: comparing their prices

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How good value are Tesco Mobile's current batch of SIM only plans? We check against other UK mobile networks to find the answer. SIM Sherpa is your trusty guide. Last updated: 4th January 2021.
Tesco best SIM only deals
The best SIM only deal on Tesco Mobile this month
We think the best value for money SIM only plan on Tesco Mobile for January is their 15GB for £12.50 deal. It's on a 18‑month plan and comes with 5000 minutes and 5000 texts too:
You can get a lower-priced SIM with 15GB data or more elsewhere if you don't need it to use the O2 network. But if you do need that, it is the cheapest deal available. See who's offering it for less here:
Their £15 for 25GB plan is a decent deal for January
To get a bigger chunk of data, you might like the £15 SIM only deal running on Tesco Mobile at the moment. It's a 18‑month plan, which comes with 25GB data, 5000 minutes and 5000 texts too:
It's not actually the cheapest SIM only deal on the market at the moment with 25GB data or more but it is the lowest-priced plan on any provider using the O2 network. Here's where you can beat it on other networks:
They're also offering unlimited data for £28 on SIM only currently
If you need even more data, we'd say this is one of Tesco's best deals on SIM only this month too. It's a 18‑month plan, comes with unlimited data, 5000 minutes and 5000 texts for £28 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 lower-priced networks' deals here: