A mobile phone belongs to a mobile terminal and can be held in your hand. In the early days, because of its large size, commonly known as mobile phones, it developed into the 5G era. 1973 in April, American engineer marty cooper invented the world's first civil mobile phone, and marty cooper was called "the father of modern mobile phones" from now on. Until now, mobile phones have become a very important tool in people's lives. They are as diverse as Swiss army knives and bring people a wonderful life experience.