1.Now it is the information society,and mobile phone is one of the speediest information-communication tool.
2.We should take good advantage of our mobile phone, in case that when we are in urgent cases we can call for help with it.
3.And meanwhile we can relax ourselves with it at our post-study time everyday as well.
4.As long as we corretly use our mobile phones,there is no mistakes to keep in step with time ,and it can also be understandable to follow the fashion , but we should always rememmber that study is our primary task.