O2 SIM only deals: comparing their best plans in January
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We look at whether O2's current best SIM only plans are decent value compared to all their competitor mobile networks in the UK. SIM Sherpa is your trusty guide. Last updated: 14th January 2022.
O2's best SIM only deals
This month's overall best O2 SIM only deal
We'd say the best SIM only plan O2 are selling this January is their 24‑month unlimited data deal below, which comes in at £30 a month and includes unlimited minutes and texts too:
It's definitely one of O2's best. But it's not market-leading. You can get a similar plan on other providers for less, even if you need your SIM to use the O2 network. Here are other networks you can beat it on:
O2's £20 for 150GB is our next best choice now
For people who don't need that much data, O2 are also offering this £20 SIM, which includes 150GB data, unlimited minutes and texts on a 24‑month plan. It's another of their best deals:
Unlimited minutes + Unlimited texts + 150GB data (5G) = £20 a month (24‑month contract)
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You can beat it for price if you don't need your SIM to be with a provider using the O2 network. But if that's a must, then it is the lowest-cost SIM with 150GB data or more. See the networks with cheaper plans here:
Their £18 SIM with 60GB is our next favourite this January
If that'd be too much data for you, you might like the £18 SIM only deal running on O2 at the moment. It's a 24‑month plan, which comes with 60GB data, unlimited minutes and texts too:
While this is a good enough deal to make it into the best of O2's SIMs, you can beat it for price (even if you definitely want a provider that uses the O2 network). Here's which other networks can beat it:
Unlimited minutes + Unlimited texts + 100GB data (5G) = £16 a month (12‑month contract)
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Unlimited minutes + Unlimited texts + 100GB data (5G) = £14 a month (24‑month contract)
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Unlimited minutes + Unlimited texts + 100GB data (5G) = £15 a month (12‑month contract)
See full deal
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