用英语简介绍手机的利与弊如下：

The supporters think the cellphone is widely used today, the students usually keep themselves in touch with their parents or guardians via the cellphone any time. As for the security issue, the cellphone is necessary. On the other hand, the students can use it as a tool of study. They can search the study materials on line by using the cellphone, it will cut down much cost of the time, make the study more efficiently.

And other people think that the juveniles is not matured enough to use the cellphone in the right way. There were some reports said that some students used the cellphone to cheat in the exam.

And also, many parents found that their children would attain some inappropriate information from the net service on the cellphone, it is not easy to supervise that. What the worst result is, they become a cellphone addict, stick to the cellphone anywhere anytime.