Big Brother is the mobile phone of the 1970s. Mobile phone was first invented by engineers from Motorola in the United States in 1973. It is a common name for mobile phones. Mobile phone uses an analog communication network. Analog signals are prone to interference, so the call quality is not clear and stable enough. Sometimes you need to shout when talking on the phone. The Big Brother is thick and bulky, shaped like a black brick, and weighs more than a kilogram. Although the battery is large, it can only last for 30 minutes of calls after charging.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
Mobile Phone is a mobile phone of the 1970s, a mobile phone invented in 1973 by Martin Cooper, an engineer from the American Motorola Company. "Big Brother" comes from the humorous term used by people in Guangdong and Hong Kong to call gang leaders. The emergence of this kind of mobile phone also means that China has entered the era of mobile communications.
Thick and bulky, shaped like a black brick and weighing more than one kilogram. It has no other function except making phone calls, and because it uses an analog communication network, analog signals are prone to interference, so the call quality is not clear and stable enough. Sometimes you need to shout when talking on the phone.
Its large battery can only sustain a call for 30 minutes after charging. Even so, Big Brother was still in very short supply at the time, and money was hard to come by.
After a few years, the Big Brother became smaller and had more and more shapes. The price also dropped to about 10,000, and the display screen became LCD. The black and white screen is called the second brother, but it is also an analog signal. Basically, Motorola dominates the world, and there is no other brand.
In the late 1990s, mobile phones with digital signals appeared on the market. This was the Nokia mobile phone that everyone was once very familiar with. Nokia mobile phones were smaller, more portable, and cheaper. , so Nokia soon became mainstream, and many businessmen bought Nokia mobile phones.
Moreover, various different styles of mobile phones have since been launched, such as candy bar phones, flip phones, slider phones, etc., entering the era of mobile phone flourishing.
And there are many mobile phone brands. For example, foreign ones include Motorola, Ericsson, Nokia, Samsung, Alcatel, Siemens, Philips, Sony Ericsson, Panasonic, LG, etc., and there are even more domestic ones. For example, Bird, TCL, Changhong, Panda, Tianyu, ZTE, Amoi, Haier, Hisense, Gionee, Capitel, etc., especially Lenovo mobile phones, were once very popular.
At this time, the mobile phone screen is still black and white, but you can send and receive text messages. Making and receiving calls can only be made within the prefecture-level city. If you leave the prefecture-level city Range, even if you are roaming, you will be charged long-distance and roaming fees when making calls, and you will also be charged roaming fees when you answer the phone
Later, there were color LCD screens. It was all false color at the beginning, and then it became true color a few years later. The color screen at that time was very rough, and you could clearly see the large pixels one by one. However, it also made many people excited. After all, the mobile phone screen had color. And with the rise of color screens, mobile phones have begun to enter the smart era.
Some people believe that the first smart phone was the Tiantuo A6188 produced by Motorola in 2000. This was a PDA phone with a touch screen. This phone had its own operating system and could access WAP1.1 wireless Internet. , and later Nokia launched the 7650, which was the world's first smartphone based on the Symbian OS operating system and equipped with a camera. Subsequently, major mainstream brands launched smartphones one after another, among which Samsung was the most popular.
But later, the old Steve Jobs returned to Apple and launched the landmark iPhone 4, which immediately caused a huge sensation
Subsequently, the domestic smartphone cutting-edge Huawei and Xiaomi At present, Huawei, Honor and Xiaomi have become the absolute main players in the domestic mobile phone rankings, while most of the mobile phone brands that were once prosperous have disappeared, such as Bird, Panda, Haier, Hisense, TCL, Panasonic, Mobile phone brands such as Sony, Ericsson, Alcatel, Siemens, Philips, Amoi, and LeTV have basically disappeared from the market, while big brands such as Samsung, Lenovo, Motorola, and Nokia are now rarely seen around us.
Nowadays, the functions of smart phones are becoming more and more powerful. Not only can you watch movies, TV series and listen to music, you can also watch short videos, take photos and videos, surf the Internet, make mobile payments, navigate, and download various A variety of software allows unlimited expansion of functions, and mobile phones have become the most important information center and Internet terminal.
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