mm I don't know what is the child because some child can have that when they are only 7 years old but some child are just I don't have words I have seen how 13 years old kid buy a new expensive phone and after 2 days he just broke it.
When they turn 12 or 13. Thats the time of there life where they are going into high school and they are going out, so they need a mobile to contact there parents and to conatct there friends. A mobile with your child is a life saver.