mobile phone's histoy
The start of mobile phones is a car telephone that makes the battery of the car a power supply. Service started in 1979 in Japan.
"Shoulder phone" that became it in a present cellular phone appeared in 1985.
However, it was very heavy(three kg).
And, "type 802" that was called the first generation of the cellular phone in 1987 appeared.
The technology and the service of the cellular phone rapidly start advancing starting with it.
Because the charge's having become cheap, the number of those who use the cellular phone has increased.
Service "i-mode" that was able to hook up to the Internet started, and it became an explosive hit in 1999.
If you want to know carrying plainly ・・・
Kogure Yuichi Official site
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