Introduction To Mobile Phones

Mobile phone, the full name of mobile phone or wireless phone, is usually called mobile phone. It was originally just a communication tool. In the early days, it was commonly known as "Big Brother" [1]. It is a portable telephone terminal that can be used in a wide range. It was first developed from the battlefield mobile phone manufactured by Bell Laboratories in 1940. In 1958, Soviet engineer Leonid Kupriyanovich invented ЛК- Type 1 mobile phone. In 1973, American Motorola engineer Martin Cooper invented the world's first commercial mobile phone.

Mobile communication has gone through the 2G era and the 3G era, and has developed to the 4G era so far, and the 5G era has followed closely. There has been 5G commercial in China.