The final vital reason is cell phones easily to be student 's weapon to kill themselves at school . School environment is a safe and healthy place ,however , students are in the changing period of both mentality and physicality, sometimes due to small problems they easily take action without thinking carefully ,such as fighting, gathering into small gangs , bullying each other. Students often use cell phones to call the assistance of outside when they are getting into fights, then lead to the serious effects later. School administrators are difficult to control the order of school if this problem happens. Therefore , not allowing to use cell phones at school are going to avoid the order of school in danger.
In conclusion , everything always have two sites of it , not excepting cell phones a sort of useful tool, importantly , we should know take use of its advantages effectively . Cell phone use bring us so many benefits but lead to a large number of problems, therefore, from the above -mentioned reasons ,personally I consider that cell phone use in secondary and high school should be banned to prevent unpredictable effects later.