2, affecting vision, mobile phone screen is small, high brightness, playing mobile phone for a long time will obviously reduce eye vision.

It is easy to form bad habits. Playing mobile phones in class often makes college students have no serious and rigorous attitude towards anything, which has a great influence on their future.

4. Leave a very bad impression on teachers, making it more difficult for them to graduate smoothly.

5. It will affect the reputation of the whole class in the school and bring bad influence to the class and counselors.