As the representative of handheld devices, mobile phone developped rapidly in the recent years and had been a major department in the electronic manufacture industry. The market analysts forecasted that phone market had been maturity, and its pace might be slowed down. But there is still a strong market when the mobile phone was upgraded because of its extensive use, high penetration and rapid technological development. As the 3Gcommunications provided more essential services to phone users, the global mobile phone market, stimulated by the high-end products, had been a major force in the semiconductor industry.

Recently, the use of mobile phone was beyond the scope of the communication tools besides calling and SMS. Mobile phone had a broader range of uses in the work and entertainments, such as listening to music, watching movies and TV, surfing in the internet, sending e-mails, msn, drawing, handwriting, playing games and so on. And mobile phone will be more widely used in the new fields in the 21^st century. Mobile phone could send heart patients’ distress signals to doctors for first aid, control your house, and even help the policemen in criminal cases.

Although it was important in our usual lifes, mobile phone could cause tremendous damages to human body. For example its electrical magnetic radiations could make the people get neurasthenia, dizziness, lack of energy and other diseases. Owing to the phone virus, mobile p英语论文网 【http://www.51lunwen.org】hone could be easily infected and important informations in the phone might be deleted forever which caused incalculable loss to the phone owners.

In this papar, we concluded that mobile phone was useful to us and widely used in our usual lifes, but it might cause damages to human body. So we should be more careful when using mobile phones.