ITProPortal: Arguably counted amongst one of most useful technical gadget so far, the mobile phone has completed 25 years of its existence.
The first mobile handset that appeared in market was the Motorola DynaTAC 8000X and it was 13 inches long and weighed almost 1.75 pounds, obviously too bulky for contemporary mobile users.
In 1983 when the mobile was first launched, one had to pay USD 50 a month in rentals and calls would cost 40 cents per minute during peak times.
Incidentally Motorola poured a whopping USD100 million investment and 10 years in developing the first ever mobile handset.
At the end of this year the total number of mobile phones will be more than four billion.