Mobile phone has added a new dimension to our communication system. It has made the world closer to us. a it has made worldwide communication easier. We use it for our day-to-day communication. b it has been a part and parcel in our life as we cannot go for a single day without using it. We use it for rapid communication. c mobile phone is not free from defect. It has some negative sides as well. d excessive use of mobile phone may damage our hearing power. e it is a means of money wastage. f it is seen that many underworld crimes are being done with the use of mobile network. g the radiation from mobile phone may cause cancer to the users. h we are aware of these harmful effects. i we are not aware of using the mobile phone. j we must have to be conscious of the negative impact of mobile phone.