“You don’t enforce a no cellphone policy as if the students are going to murder 100’s of innocents. Airport security and cellphones in Yeshiva’s have nothing to do with each other. Its comparing apples and oranges.”
Remember, cell phones are not banned in yeshivos (perhaps we should clarify what type of yeshiva we are talking about?) because they are a distruptive to the classroon setting (which they may be as well), rather, because they are deemed dangerous to ones yiddishkeit. Apples and oranges?