You are talking about your 14 years old right ?~ <br> At this age you need to be a bit strict .. Please do not give him any mobile phone ..keep a check on the google searches too of he is using your mobile ..the most important thing is to check his friends circle ..make compulsory study hours and also give him time as the habit needs to inculcated...<br> Make a small study circle and encourage him to study ...give him small rewards if he is doing well..talk to him as a friend and make him understand..<br> Best wishes ..