In what year was the mobile phone invented?

April 1973 inventor Martin Cooper.

2. Mobile phone, the full name of mobile ** or wireless**, commonly known as mobile phone, was originally just a communication tool, and in the early days, it was commonly known as "big brother", which is a portable ** terminal that can be used in a wide range, which was first developed by the battlefield mobile machine manufactured by Bell Labs in the United States in 1940.

years, Soviet engineer Leonid. Kupriyanovich invented the -1 mobile **, in 1973, American Motorola engineer Martin Cooper.

Invented the world's first commercial mobile phone. After the 2G era and the 3G era, it has developed to the 4G era so far, and the 5G era is also closely followed, and 5G has been commercialized in China.

Mobile phone is the abbreviation of portable **, or mobile**, Hong Kong is also known as mobile**, is a portable wireless**.

One day in April 1973, a man stood on the street of New York, pulled out a wireless ** about the size of two bricks, and called it, attracting passers-by to stop and look sideways. That man was Martin Cooper, the inventor of the mobile phone. At that time, Coopa was an engineer and technician of the famous American company Motorola.

This man shouted that the world's first mobile ** was against an opponent who worked at Alexander Bell Labs, who was also developing mobile ** at the time, but had not yet succeeded. Coopa later recalled: "I called him ** and said:

Joe, I'm talking to you right now with a portable cellular**. I heard a 'gnashing of teeth' on the other end of the earpiece—though he had maintained considerable politeness. ”

This product of competition between scientific and technological personnel in those years has now blossomed everywhere, bringing great convenience to our modern life.

Martin Cooper, who is 74 years old, started his own communications technology research company in Silicon Valley after 29 years at Motorola. Currently, he is the chairman and CEO of this company. Martin Cooper's idea at the time was to let ** know that wireless communication – especially small mobile phones – is very valuable.

In addition, he hopes to pique the interest of the Federal Communications Commission in supporting Motorola in its rivalry with AT&T, which is also a major communications company in the United States.

In fact, going back further, we will find that the concept of mobile phones appeared as early as the 40s. At that time, it was Alexander Bell Laboratories, the largest telecommunications company in the United States, that began trial production. In 1946, Alexander Bell Labs created the first so-called mobile communication**.

However, because of its size, researchers had to put it on a shelf in the lab, and slowly people forgot about it.

It wasn't until the late 60s of the 20th century that AT&T and Motorola became interested in this technology. At the time, AT&T was renting out a very large mobile wireless ** that customers could attach to large trucks. AT&T's vision is that in the future it will be able to develop a mobile ** with a power of 10 watts and use the radios on the trucks to communicate with it.

According to Coopa, this kind of ** is too big and heavy to move and let people take it with him. As a result, Motorola applied to the Federal Communications Commission of the United States, requesting that the power of mobile Shouye communication equipment should only be one watt, and the maximum power should not exceed three watts. In fact, the radio power of most mobile phones today is only 500 milliwatts at most.

From the registration of the mobile phone patent in 1973 to 1985, Caiwuye gave birth to the first modern sense, truly mobile**. It is to place the power supply and antenna in one.