What are the benefits of using mobile phones in universities for students' physical and mental health?

In the past, mobile phones could make phone calls and send text messages. With the development of science and technology, mobile phones have now developed into smart phones, and some mobile phones can be found on smart phones in life. Both men, women and children like them very much and are using them, which brings people the convenience of entertainment, but at the same time it also has a negative side. Some people have a hidden heart because of excessive use of smart phones. They feel that they are at a loss because they don't have a mobile phone, which affects their work life and students.