O2 Free SIM Cashback & Offers
Online cashback rates
for an activated free SIM purchases
More about O2 Free SIM
Get your hands on a free SIM card from O2 with constantly great rates and fantastic top-up incentives
Order your free sim by 9am and you'll get it the next working day (subject to location and Royal Mail delays).
Our Pay As You Go tariffs are flexible.
With a Pay As You Go phone sim you also get lots of perks, just for being on O2. And you can keep your number, if you've joined from another network.
Fantastic FREE text offers - O2 are offering you Unlimited FREE O2 to O2 texts every month when you top up just £10 a month!