Incredibly, the basic concept of the mobile phone has existed for decades. In the nineteenth century, scientists experimented with the use of the Earth's atmosphere to transmit and receive communication. This was the beginning of the mobile phone. In 1973, however, the first call was made from a mobile phone.  In 1947, AT & T and Bell Labs demanded that the Federal Communications Commission allocate more radio frequency frequencies, so mobile use could become more and more widely spread. The FCC has decreased, so only a limited amount of frequency is available. This meant that only about two-thirds of the same area of service was being held simultaneously. It was not worth a company to invest time and money into technology if it were not used more widely.
Fortunately, the FCC has decided to allocate more frequencies to the mobile phone in 1968. This was the real beginning of using a mobile phone. Many small, low-power towers broadcast the signal. Each cell had a few miles radius, and calls could jump between the towers if they left the cell. Now mobile phone tests can begin, started in 1977 with Chicago users in 1977. Mobile phones range from cumbersome mobile phones to tiny phones that fit into the palm of your hand
Mobile phones have not become so popular or popular since the 1990's, but work that has been going on for decades. From now on, you can take pictures, listen to music, access the Internet, send files, and more. Learn who has a phone number to view the numbers and communicate freely with others. The mobile phone is one of the most important innovations of the past century and will undoubtedly continue to change the way people interact with each other in many ways.
Source by sbobet