The era of media boundaries with a mobile phone in the whole world collapses. Contact with anyone From all over the world Discussion of text chat and online together. The track of the Facebook group. Convenient and intuitive interface But at the same phone user behavior. Especially students - student drug use phone almost every time. Lack of interaction with peers Bear a phone screen Silence the people in front. Even in the classroom to find such behavior. This is not intended or interest in the subject taught.