We live in the age of science and technology. Mobile phone is one of the wonderful inventions of modern science and technology. Mobile phone is a scientific divice by this we can communicate with others. This communication system is opereated without any wire. Nowadays, we can not think even for a day without mobile phone. The consumers of mobile phone are increasing day by day. Though people are getting benefits, mobile phone sometimes becomes the cause of health hazards. It causes brain tumours, genetic damage and many other incurable diseases. But it is a matter of great regret that most people are not aware of disadvantages of mobile phone. Besides, some people use mobile for commiting crime. Students kill their valuable time because of mobile phone. Even sometimes young girls are harrased and teased through mobile phone. Using cellular phone is also harmful to the pregnant women. We know the usefulness of mobile, too. Earlier it took us weeks and months to contact our near and dear ones. But now we can contact them with a single press of mobile buuton. Besides, it has created a new era for the business world. If mobile phone is used in a controlled way, it will do more benefit to us.