mobile phones at school

The cell phone is very important thing in the world and ilfe.
but some people use it for bad things, as the student in school. They take the cell phone with them in school. This is a very big problem.
The disadvantages of the cell phone is that it causes the distraction for the teacher and student in the class. And it is very dangerous on our healty. And they lose them time and money. The students who take the cell phone at school are impolite. They take bad photos. Some people are big mouth they use the cell phone just to tell in anything and waste their money and time.

But the cell phone has advantage.