Timeline: evolution of cell phone

Dec 23, 1958

Tokyo Tower

Tokyo tower started a business in 1958. Height is 333meters.

Jan 9, 1962

color televison.

Color TV broadcasting started in 1960. But, only one thousand household have color TV in 1962.

Dec 13, 1968

beeper

Beeper service started in 1968. http://www.nytimes.com/2002/04/11/technology/the-bell-is-tolling-for-the-beeper.html

Apr 15, 1983

Disney Land opening

Jan 13, 1985

First cellphone

This phone was put on sale by NTT.　The name is "shoulder phone". User have to carry this phone body hanging own shoulder. Weight is 3kg.　Usually, this phone was put on car. http://web-japan.org/kidsweb/hitech/mobile/mobile01.html

Dec 13, 1987

Second cell phone

This cell phone was miniaturized from old type. Weight is 900g.
This cell phone can be used with one hand. http://www.nytimes.com/2006/05/12/technology/12rimm.html
youtube: timeline of cell phone history
http://www.youtube.com/watch?v=-DztC-enOKk

Dec 9, 1988

Japnese communication company AU was opening.

The company NTT opened on 1985.NTT is the first communication company,so it make a monopoly of communication of cellphone.However, on 1988s the au company wasn opening.

Dec 13, 1991

cell phone

With the developing of miniaturize, "mova" was put on sale. Weight is 230g. Sales dramatically rose by the appearance of this phone.　 article:The Japan Times
http://www.japantimes.co.jp/text/ed20080127a1.html

Sep 4, 2001

Disney Sea is open

Dec 13, 2004

slide cell phone

NTT docomo put on sale slide type cell phone.

Dec 26, 2006

Black Berry

Blackberry began to spread in Asia since 2006. Blackberry spread mainly among businessmen. http://www.nytimes.com/2006/05/12/technology/12rimm.html

Jul 11, 2008

smart phone

The first smart phone is i phone 3G.It paid attention in Japan.Smart phone like a PC, whenever can use internet and zoom pictures. http://www.japantimes.co.jp/text/nc20121024a1.html