Use mobile phone on campusNowadays,more and more students are using mobile phones on campus,causing some hot topics.Some people think it is a really good thing.It is conveninet that the students can use mobile phones when and where they need,such as when they want to find somebody or call someone for help.Whats more,more and more students have access to mobile phones through which they can search for the information they need.However,this phenomenon also make some negative effects.As the development of mordern technology,the fuctions of mobile phone are more complicated.If we pay attention to people around us,we will find that almost everyone has smartphone.The college students always spend lots of time on playing games,watching movies,giving messages and chating with each other by using smrtphone.Moreover,mobile phone can cause many diseases.The longer we use smartphone,the worse the ability of listening and vision are.In my opinion,not only can mobile phones help us do many things,but it also has many bad influence on us,so we must keep a good balance between study and entertainment,making a good use of this modern tool.