Some students consider that they shoul d bring phones to school.Because they t hink when they take phones with them ,it is convenient for them to contact th eir parents.And also the phones have m any useful functions, such as taking pho tos,playing songs and so on.Even more,i t's popular and fashionable. Those who hold the opposite opion thin k it may have some influence in their stu dy.Sometimes it effects classes.Moreov er,it increase their economic burden. In my opinion,students should bring p hones to school,because we can cont act parents and friends conveniently wit h phones. Some students consider that they shoul d bring phones to school.Because they t hink when they take phones with them ,it is convenient for them to contact th eir parents.And also the phones have m any useful functions, such as taking pho tos,playing songs and so on.Even more,i t's popular and fashionable. Those who hold the opposite opion thin k it may have some influence in their stu dy.Sometimes it effects classes.Moreov er,it increase their economic burden. In my opinion,students should bring p hones to school,because we can cont act parents and friends conveniently wit h phones.