What is the origin of mobile phones?

The origin of mobile phone was invented by marty cooper in 1973. Its purpose is to enable people to communicate by telephone anywhere. It uses microwave signals and base stations to spread, and can be used all over the world, enabling people to realize safe and efficient long-distance communication anytime and anywhere. In addition, due to the development of technology, mobile phones are becoming smaller and more portable, and the global mobile network also makes them more reliable and convenient.