Call 61818 from your child’s mobile phone or visit parentalcontrol.o2.co.uk and click the “Continue” button.
Controls & Settings guide
O2 Parental Controls allow the account holder to block adult content when the device is using the mobile and network out of the home (the default is 18+). Additionally, you can also allow access to sites classified as suitable for under 12’s.
The mobile number of the handset you want to set up the service on, your credit card to prove your age.
See more resources and articles to help children stay safe online.