O2 SIM only deals: comparing their best monthly plans in October
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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: 15th October 2021.
O2's best SIM only deals
The SIM only deal on O2 we rate highest this month
We think O2's best value option on SIM only this October is their £20 a month plan below, which comes with 150GB data, plus unlimited minutes and texts on a 24‑month deal:
Unlimited minutes + Unlimited texts + 150GB data (5G) = £20 a month (24‑month contract)
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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. Here's where you can beat it on other networks:
O2's 250GB for £23 plan is a good option too
For those needing more data, we think this 250GB is one of the best SIM only plans on O2 too. It's on a 24‑month deal, comes with unlimited minutes and texts - all for £23 a month:
Unlimited minutes + Unlimited texts + 250GB data (5G) = £23 a month (24‑month contract)
See full deal
It might not be the lowest-cost SIM only deal with 250GB data or more on the entire market but if you're sure you need a SIM using the O2 network, it is the best-priced. See lower-priced networks' deals here:
Their £26 for unlimited data plan is a decent deal for October
To get an even bigger data allowance, we also think this £26 O2 SIM is one of their best options. It comes with unlimited data, unlimited minutes and texts on a 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 unlimited data option. Here are other networks you can beat it on:
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How O2's deals compare with other networks
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