In my view, a mobile phone for a child under 10 years of age should have a very limited functionality. It should be used primarily to what the phone has been created that is to talk. There is no need to equip it in a large number of multimedia functions. Gazing at the tiny screen when playing games or watching videos can really aggravate the child’s eyes. I think I would be a good idea if it was made of reflective elements so as to further improve the safety of our kids when walking especially in autumn when the days grow short and dark falls very early. Phone should be very durable and resistant to shocks, and should be waterproof. Of course, should not be too heavy and big. Simply it must be comfortable. It is very important for the child that the phone had a built-in GPS receiver so that we can if necessary be able to check the whereabouts of our child. Every parent probably is well aware of what important and convenient solution it is. To sum up, the phone must be durable and easy to use and should have a GPS system.