英语作文 关于讨论中学生是否应带手机

Some people say that is harmful for those students who take cellphone in school,I think it depends.
Cellphone can be used in many ways for students,for example,calling,keeping or developing relationships with others,even playing game on it!
Most people know its advantages and disadvantages form their bosoms,for sometimes they didn't want to face it.
Teachers should point the way to usefulness in taking cellphone in school!