Mobile is a wireless handheld device that can be used to make receive call from one place to another. Now a days mobile phones also used to surf internet, broadcast video, image capturing, money transfer, office works and other day to day uses increased day by day.
The first handheld cellular mobile was build by Martin Couper an employees of Motorola in 1973.This mobile weighs 2kg at that time.
The first analogy signal mobile was build in 1979 by Nippon telegraph & telephone in Japan. In 1983 Dyna TAC 8000 X was the first mobile which was available for (2G) public use.
The first GSM mobile was available on 9th November 1992 by Nokia company.
First 3G mobile was launched on 15th October 2001 by NTT Docomo in Japan.
First 4G phone named HTC EVO 4G developed by HTC on 4th June 2010 in USA.
Mobile in India :-
In India Mobile was launched on 31st July 1995.First call made by union minister of telecomm inaction Mr. Sukhram of that time to west Bengal chief minister Mr. Jyoti Basu
2G was launched in final and in 1991by Radiolinja .2G came in India as a revolution in the mobile internet.2G spectrum was sold in 2008 in india 3G was launched on 11 December 2008 by MTNL(Maha Nagar Telephone Limited) in Delhi.
4G was launched in Kolkata by Airtel. 5G will be launched by June 2020.