cell phones

Cell phones are one widely used all around the world. Cell phones bring many advantages to us. For example, It is easy to find somebody where you are, we can send the message immediately, and we can talk anywhere or anytime. Although the cell phones have many virtues, it still has some drawbacks. Such as teenagers always compare the look of the phones, or they will play the games during the class, and phones have many radiation. Therefore, I only think the phones are just a convenient tool to contact someone. It is not necessary to compare or let us not be concentrate in the class.