It should be allowed to use cell phones in schools as if there is any emergency case parents can easily inform their children. It should not be allowed to use during lectures but during break it should be allowed. And it also helps after school time as if the children have any transport problem they can inform their parents. Other than this if they have to stay at school after the school time is over for any type of preparation they can inform their parents. but there is some schools that let phones in because of the safety reasons.