Cell phone has been the indispensable part of our life today. For many students, they bring cell phone to school, which annoys many teachers, because the students are not listening to them when they are passing the knowledge. Actually, this situation can't all blame students and teachers have some duty. If they find the attractive way to show knowledge, surely students will focus their attention. It is not possible to ask students to hand in their cell phones, as they get used to using it. Most students will not play cell phone in the classroom, because they know their duty. For the students who can't focus their attention, even without cell phone, they still don't want to study.