WHAT CAN I DO?
There are now mobile phone operators who sell phones with filtering software included, so that children won't access inappropriate websites or content. It is worth checking that your child's phone has this capability.
Remind your child that any image they send on their mobile can be changed and shared online, and that once they have sent an image they have lost control of it.
Read through the young people's website with your child, and help them to understand that they shouldn't give out personal details such as their mobile number to strangers, or other young people that they don't fully trust.