Mobile phone is a kind of portable telephone terminal which can be widely used. It is called a mobile phone or a wireless phone. At first, it was just a communication tool. It was commonly known as "mobile phone" in China in the early days. The mobile phone was first developed from the battlefield mobile phone manufactured by Bell Laboratories in 1940, and was later developed by the American Motorola engineer Martin? Cooper invented the world's first commercial mobile phone in 1973. In addition to typical telephone functions, modern mobile phones also include many functions, such as camera, GPS and Internet connection, which are often called smart phones. Mobile phone is the name of Chinese mainland, and it is called mobile phone in Hong Kong, Macao and Taiwan. 1one day in April, 973, a man stood on the street of new york, took out a wireless phone about the size of two bricks and made a call, which attracted passers-by to stop and stare. This man is Martin, the inventor of mobile phone? Cooper. At that time, Cooper was an engineer of the famous Motorola company in the United States.