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Take stock of the first mobile phones of the world's mobile tycoons and appreciate the elegant demea

In today's era when mobile phone giants in the past have faded out of the stage of history, people only see emerging mobile phone brands such as apple and Samsung. Although these mobile phone giants have gradually disappeared in the long history, their contributions to the history of mobile phone development are indelible. Today, let's take a look at the second mobile phone brands produced by mobile phone giants such as Nokia and Motorola A cell phone.

Motorola dynatac 8000x

This bulky mobile phone in 1983 is definitely the first mobile phone in the world. The R & D cycle has exceeded 10 years. It was developed by Martin Cooper, the father of mobile phones, who appointed krolopp as the project leader. The Motorola dynatac 8000x weighs two pounds. Talk time is half an hour. The selling price is $3995. R & D costs $100 million.

Nokia tank

The mobile phone, mobira sensor, came out earlier than Motorola in 1982, but it can't be called a mobile phone. Because it's so big, it's like a radio. It is a product launched by Nokia after its acquisition of salora, a Finnish TV manufacturer. Mobira sensor supports the world's first 1g network with 450MHz VHF band. It looks like an old radio and weighs 9.8kg.

The first mobile phone independently developed in China

Yd9100, the first domestic mobile phone

Date of birth: 1991

Birthplace: the Fourth Research Institute of the former Ministry of Posts and Telecommunications

In the Xie's art collection in Haining, Zhejiang Province, there are more than 13000 old mobile phones on display. Located in the central glass cover of the exhibition hall, there are some of the most valuable old mobile phones. One of them is about 20cm high and 10cm wide, with the words "yd9100" printed on the body. This is the first cellular mobile communication handset independently developed by China, which is also commonly known as "cell phone" at that time. With its appearance, the foreign brand of "mobile phone" with a price of 20000 yuan or 30000 yuan at that time had to reduce its price again and again.

YD is the abbreviation for mobile, while 9100 indicates production in 1991. Yd9100 was developed jointly by the former Fourth Research Institute of the Ministry of Posts and Telecommunications (now the Fourth Research Institute of Telecommunications Science and Technology) and Jiangyin Economic Commission of Jiangsu Province.

Yd9100 was officially appraised by the Ministry of Posts and telecommunications in Beijing on May 20, 1992. The expert's opinion is that it has complete functions, clear voice and good communication effect, which is the first in China. It also marks a new step in the research of communication technology in China. In November 1992, the first set of "mobile phone" production line designed by China itself was also put into operation in Jiangyin Intelligent Communication Equipment Co., Ltd., and mass production of yd9100 "mobile phone" began.