This is the smartphone we take for granted, but few people know how it has changed into this form. In this report, we will introduce the history of such smartphones and mobile phones.
Now, this small machine in our hands, will it take any change to calm this posture? Let me explain.
The cell phones in our hands. The penetration rate in Japan is more than 100%. According to data released by the Ministry of General Affairs at the end of September 30 in Pingcheng, the number of contracts for mobile communications (mobile phones, PHS, PWA) is 100 million.
Now everyone has a mobile phone and PHS, the popularity is in recent decades, simply did not expect to "carry a phone with you". What makes it possible is the progress of communication technology and the miniaturization of terminals.
In this item, we will explain the process of the popularity of mobile phones to the general public.
[see] Ministry of General Affairs Hewlett-Packard
From now on, about 80 years ago, in 1940, Motorola, an American company, developed SCR-536.
Morotora began mass production of handheld sound in 1941, mostly for the United States Army.
But the hand-held voice is, in the final analysis, the "predecessor of the mobile phone". Because the handheld voice does not use the cell phone line. Therefore, the range of calls is limited.
The establishment of a wireless call system close to modern mobile phones was established in 1946. Used to be American Bell Systems.
Bell Systems uses the telephone lines previously used in landlines in ordinary homes to start radiotelephone line services. This is often referred to as the 0G system.
Although the foundation of mobile communication has been done, the development of key terminals has not kept pace with the times, and even the smallest terminals must be transported by car.
Since then, with the continuous development of various countries, in 1973 Martin Cooper (Martin Cooper) of Motorola managed to complete a prototype of a device with one hand available size.
In another 10 years, Motorola will successfully realize the commercial use of the above terminals in 1983.
This terminal, which is named "DynaTAC8000X", is called the oldest mobile phone.
By the way, in Japan, 1G was used in 1979, shoulder phones were rented in 1985, and Japan's first mobile phone service began in 1987. At the same time, NTT launched its mobile phone No. 1, "TZ- 802".
TZ- 802, a mobile phone that first appeared in Japan
[reference] SCR-536 (Motorola) NTT DoCoMo Historical Exhibition Square
When Xiao Dehong was released, the machine was not sold out, but was provided to users in the form of lease. Therefore, although there is no physical price, only the deposit and project fee is about 200000 yen, and the monthly basic royalty is about 260 million yen.
In addition, the project cost of the debut mobile phone TZ- 802 in Japan is 70, 000 yen. The compensation is about 100000 yen.
Even the latest model of modern high-function iPhone (IPhone XS), whose terminal price is around 110000 yen, shows how luxurious mobile phones were at that time.
The table summarizes the changes of mobile phone numbers in Japan. Please see.
At present, the main mobile phone numbers start with 070, 080 and 090, but due to the lack of number capacity due to the increase in the number of users, the mobile phone number has changed.
What is noteworthy are 1996 and 1999. The so-called "complete region does not specify a way", the previous mobile phone to speak to within 160 kilometers and far away, the first three digits of the number is different. This was abolished in 1996.
In addition, with the lack of capacity, 1999 is an 11-digit number, and it is expected that its capacity will be insufficient in the future, and 12-digit countermeasures are still being studied in the future.
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