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O2 SIM only deals: comparing their best monthly plans in September

O2 logo with a SIM cardVisit

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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 September 2021.

O2's best SIM only deals

The best overall O2 SIM only deal this month

O2 SIM card
120GB data
a month

24-month dealGet this deal

(opens in new window)

O2's 60GB for £18 plan is a good option too

O2 SIM card
60GB data
a month

24-month dealGet this deal

(opens in new window)

Their £16 for 25GB plan is a decent deal for September

O2 SIM card
25GB data
a month

24-month dealGet this deal

(opens in new window)

If you need less data, another good deal on O2 at the moment is their £16 SIM only plan here, which includes 25GB data instead, plus unlimited minutes and texts:

It's a good enough deal to get into O2's best SIMs but you can actually get a lower price for a similar plan elsewhere, even if you definitely want it to use the O2 network. See where you can get it for less here:

Compare all SIM only plans

Compare deals from all networks

How O2's deals compare with other networks

SIM card with magnifying glass



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