here is a report about the history of cellphones

History Of Cellphones

Cellphones are portable,smart,easy to use and tough.But do you know how all this started?Well I am about to tell you.

The idea of phones first started in 1928.And since then radio technology has started to evolve.Phones were used in war.And on 1973 the first cellphone was made.As technology evolved,entertainment was installed like music,games and cameras.

In 1910 Lars Ericssion installed a phone in his car, but this was not a radio phone.He would travel the country and use a accessible telephone line.Using a long pair of electrical wires,he could connect up to the national telephone network.

Also in 1946 Soviet engineers G.Sharpio and I.Zaharchecko succesfully tested their version of radio mobile,mounted inside a car.It could connect up to a network from a range up to 20 kilometers.

In the 1990’s the ‘second generation‘ was introduced.Known as the 2g network.The 2g network worked by having a digital circuit that switched transmissions,and it was also the introduction to advance and fast phone-to-network signaling.

Not long after the 2g network,people started to work on the ‘third generation‘ also known 3g network.After awhile in 2007, over 295 million people subscribed on 3g network worldwide.3g telecom services has earned over 120 billion dollars.And so it was clear that the 3g network is a profitable service.