In this sample, 279 people (93%) responded that they played with mobile phones in class. We also investigated the frequency of using mobile phones in class. Among them, 49 people played less than 5 minutes, 79 people played 5-15 minutes, 126 people played 15-30 minutes, 46 people played mobile phones for more than 30 minutes or even the whole class, accounting for 16.33%, 26.33%, 42% and 15.33% respectively. According to the survey, we can conclude that the phenomenon of playing with mobile phones in class is more serious. Therefore, we also conducted a survey and questionnaire survey, found that about 76% of the people think that the teacher's class is boring and can't understand, so they will play mobile phones. Another 15% said they chose to play mobile phones in class because they thought they were important, such as chatting with people they cared about. The remaining 9% thought it was harmless to play with mobile phones in class. We also conducted a questionnaire survey on the types of mobile phone use, and found that about 46% of the people are used to chatting in class, while 27% are used to watching videos. In addition, a large proportion of people visit the web and shop.<br>
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