More and more university students began to have their own cell phones.What"syour comment"s on it?

Just like the coin has two sides, so does the cell phone. As we know, with the cell phone, it is more convenient to communicate with each other.People can keep in touch with each other everywhere at any time. However, it also affects students' daily life. For example,a person who is used to the cell phone, he/she may feel frustrated when the phone is not with her/him.Besides, cell phone has become the noises in the class,especially in the self-study rooms,for the students will use the cell phone to send short messages(some of them even answer the phone). All in all, only the university students take good advantages of the cell phone,can the cell phone be a good tool for the students.