英语作文!100分!

Reflection on the Mobile-phone Marketing and Suggestions on Its Improvement
Since its invention,the Mobile-phone has become one of the most important means of communication in the world.The mobile-phone has completely changed the lifestyles of almost all people in the world.The sale of mobile-phone increase sharply in china,especially in big city.
The mobile-phone is indeed nessary to people.But the negative of it are obvious.For example,in order to increase the sale,some companies promote the mobile-phone to students.Some students often waste a lot of time chatting over the phone in their spare time,some even use them to cheat in exams.In addition,mobile phone bill is also a heavy burden on students' families.Even worse,some companies are profit oriented.They expose the customer’s informations to others,which would harm the customer’s benefit.
Therefore a strict law should be issued to keep the mobile-phone under proper control.under the guidance of the law,I think,the mobile-phone will play a better and better role in the future.