In the modern day life, mobile phones have become an integral part of mutual communication. Today there are more than two billion cell phone users being exposed every day to the dangers of electromagnetic radiation (EMR)—dangers government regulators and the cell phone industry refuse to admit exist. Included are: genetic damage, brain dysfunction, brain tumors, and other conditions such as sleep disorders and headaches. The amount of time spent on the phone is irrelevant, as the danger mechanism is triggered within seconds. This article highlight on hazards of electromagnetic radiation by using mobile phone.