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That country was the first to invent it.
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The mobile phone was invented in 1973.
In April 1973, Martin Cooper, a technician from the famous American company Motorola, invented the world's first mobile phone that could be used by civilians. It can be played using any radio band**. In 1987, the first mobile phone entered the Chinese market, the model was the Motorola 3200.
Even the mobile phones that everyone says are extremely expensive.
The first generation of mobile communication only transmits the guessing and vertical analog signals between the mobile phone and the base station, which can only be used to play the first generation, with poor security and anti-interference capabilities, and cannot roam internationally. So far, the first generation of mobile communication has entered the life of the general public. Of course, due to its high price, only a few people can afford it, and it has not yet reached the point of popularization.
The development history of mobile phones:
1G era: Since 1973, Motorola has been the market leader in sound transmission through analog signals, and it is called Big Brother in China.
2G era: In 1995, it was popularized in the world, and brands such as Nuodong Fengkia and Ericsson rose, and the functions of mobile phones were not limited to calls, but also more digital.
3G era: In 2009, China officially adopted the two major fronts of Apple and Android, which means the rise of mobile Internet.
4G era: In 2013, China launched 4G, and smartphones began to become popular, which are characterized by faster and more stable connections between people and information.
5G era: In 2019, 5G technology was officially commercialized in China, with a speed of more than 10 times faster than 4G, which can realize the Internet of Everything.
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Mobile phones were first developed by the battlefield mobile ** machine manufactured by Bell Labs in the United States in 1940. However, due to its size, the researchers' pants had to be placed on a shelf in the laboratory and did not get practical applications.
In April 1973, Martin Cooper, a famous engineering technician of Motorola in the United States, invented the world's first mobile phone for civilian use. When Coopa hits the world's first mobile**, he can use any electromagnetic frequency band. In fact, the first generation of analog mobile phones relied on the different frequencies to distinguish different mobile phones for different users.
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Mobile phones first appeared in the United States; The invention of mobile phones has made our lives more convenient, we can contact the people we want to contact at any time, we can meet the people we want to see at any time, and it also ensures our safety to a certain extent, so that we can communicate with family and friends anytime and anywhere.
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America, it was invented by Martin Cooper, an American designer. The impact is that people can use it to obtain a large number of information resources, and can also communicate across the barriers of space, which facilitates people's travel, work and life, and now people can shop online, surf, etc.
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It first appeared in the United States. Slowly the popularization of mobile phones has changed people's lifestyles, and at the same time, it has also improved the efficiency of life and made people's lives more convenient.
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The mobile phone was invented in the United States.
In April 1973, Martin Cooper, a technician at the famous American Motorola company, invented the world's first mobile phone that could be used by civilians.
When the first mobile phone was invented, Martin Coopa used it to make calls, and in fact, the first generation of analog phones used different frequencies to distinguish between different phones and different users.
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The mobile phone was first developed by the battlefield mobile machine manufactured by Bell Labs in the United States in 1940.
In 1958, the Soviet engineer Leonid. Kupriyanovich invented the -1 mobile book**, and in 1973, American motorcycle sales led engineer Martin Coopa to invent the world's first commercial mobile phone.
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Inventor of the mobile phone: Martin Cooper.
Martin Lawrence Cooper
Cooper, born on December 26, 1928, was born in Chicago, Illinois, USA, a famous inventor, because he was the first to develop the mobile **, known as the father of the slag branch sedan **. In 1950, he received a master's degree from the Illinois Institute of Technology. At that time, Coopa was an engineer and technician of the famous American company Motorola.
After 29 years at Motorola, he founded his own communications technology research company in Silicon Valley.
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