Mobile phone Mobile phones are of great importance to many people in society from a businessman to an ordinary man. They can't do without. In time of emergency people need to make a phone call asking for the ambulance help. In travel, mobiles are necessary to tell other people how you are . But some people have bad habits when using mobiles. They sometimes disturb people indoors unnecessarily at midnight. While driving, they may cause death, so the government should pmind strict laws against using them while driving. However, doctors warn people of its drawbacks exposing themselves to the side effects of electromagnetic waves causing cancer. So people should use mobile phones more wisely an .