The best way to cope is a warning, and the specific rules on the use of mobile phones in a rigorous academic institutions. And many people think that might be better if I put the student from class. Or hold the phone the night before, and after school. Which seems to be the only solution as appropriate. We are sure that all the students had to say was that the student's behavior is inappropriate and incorrect one bit of talking in class. I know that the class is studying. So to do that, in addition to teaching. We would talk, eat, sleep or talking on a cell phone in this case it is very unreasonable. And a demonstration of disrespect teachers. I respect what they're studying. And without respect to time and place.