Here is some interesting data. Is a survey about Cellphone usage among children in Japan, before I read I thought that most young children, 7 to 10 years old, probably had cellphones and were, somehow, hard core users of services like mobile manga and tamagochi.
I got blown away with the result that shows that actually Japanese parents are not very fond of their children walking around with cellphones, but the ones who give a mobile to kids are mostly for safety reasons.
But why is this important? Well the survey shows also that the parent and the children choose together the phone, making market to explore since is easy to see the reason to buy and the developing different applications to please parents and children.
Click for the full survey