The earliest mobile phone in the world is the Motorola dynatac800x mobile phone, which was launched in the United States in 1983. The mobile phone weighs about 1 kg, has a half-hour talk time and sells for $3995, making it the most valuable "brick" in the name.
In December 1972, the United States was responsible for the research and development of Motorola's wireless field, and later was honored as "the father of mobile phones"