The first time you use a credit card to prove to us that you are 18 or older we will charge £1 to your credit card and credit £1 to your mobile account. Please note that each time you verify your age, your credit card will be charged £1. You will only receive £1 credit when you use this service for the first time.

To block or unblock access to 18+ content

Please use the age verification online tool

More about O2's work on helping keep children safe when using their mobiles

O2 adheres to the UK Code of Practice for the self-regulation of new forms of content on mobiles. Learn more about it here.