O2 Discount Codes in August 2025
O2 offers a wide range of flexible mobile plans designed to keep you connected.
Browse all discounts, vouchers, and promos from O2
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£7 a month, 3GB, 12 month contract, unlimited calls & texts
SIM Only offer, Ends 10th September.
£11 a month, 50GB, 12 month contract, unlimited calls & texts
SIM Only offer. Ends 10th September.
£10 off upfront cost on any Apple iPhone pay monthly contract
Each April prices rise by £1.50 as set by the Consumer Price Index rate of inflation +3.9%.
Get a £35 Amazon Voucher on iPhone 16 £29.99 per month, iD Mobile, £39 upfront & 100GB of data
Each April prices rise by £1.50 as set by the Consumer Price Index rate of inflation +3.9%.
Get a £70 Amazon voucher when you purchase the New Samsung Galaxy Z Flip7
Valid on a pay monthly contract.
Get a £70 Amazon voucher when you purchase the New Samsung Galaxy Z Fold7
Valid on a pay monthly contract.
Apple iPhone 16 5x Data Boost to 500GB Data for £29.99 a month and £39 upfront
Each April: iD monthly prices rise by £1.50 as set by the Consumer Price Index rate of inflation +3.9%.
20% off selected Xtra Plans - Refurbished Phones
These discounts only apply to phones, tablets and SIM only plans that aren't already on offer. UK's only Lifetime Service Promise: Every phone comes with Battery Refresh and Lifetime Warranty at no extra cost meaning your phone lasts longer.
20% off selected Xtra Plans - SIM only
These discounts only apply to SIM only plans that aren't already on offer.
20% off selected Xtra Plans - Pay Monthly Phones
These discounts only apply to phones, tablets and SIM only plans that aren't already on offer.
£44.69 a month - iPhone 16 128GB Black with AirPods Pro (2nd Gen) with 150GB Complete Airtime
24 month contract, £110 upfront fee, Paramount+ 24 months inclusive, Go Roam - 56 days, Screen repair included, Up to 36 months extended warranty
£45.33 a month Samsung Galaxy S24 Ultra 5G 256GB Titanium Black with 150GB Complete Airtime
24 month contract, £110 upfront fee, Paramount+ 24 months inclusive, Go Roam - 56 days, Screen repair included, Up to 36 months extended warranty. Your monthly cost will increase by £1.50 every April.