With the development of science and technology, it is very common for people to use mobile phones everywhere. However, more and more students use it in class. In my opinion, they shouldn't use mobile phones in class.

First of all, when students don't know the answers to their homework, they will rely on mobile phones. Secondly, students will want to play games with their mobile phones in class, which will interfere with other students in class. Students can't concentrate on the teacher. Last but not least, students will compare their mobile phones with others, and they will spend too much money on them.

As far as I am concerned, students should not use the telephone in class.