O2 Discount Codes in September 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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8% off
2 transactions per member. Max discount of £10. Code won't work unless you go through our Shop Offer link!
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 Fold7
Valid on a pay monthly contract.
Get a £70 Amazon voucher when you purchase the New Samsung Galaxy Z Flip7
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 - Pay Monthly Phones
These discounts only apply to phones, tablets and SIM only plans that aren't already on offer.
20% off selected Xtra Plans - SIM only
These discounts only apply to SIM only plans that aren't already on offer.
£59.94 a month iPhone 16 Pro Max 1TB Black Titanium with 150GB Complete Airtime
24 month contract, £170 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.
