Cellphones

This is my report on the history of cellphones:

Cellphones

Cellphones are portable communication devices. Before cellphones, two way radios were used in vehicles but weren’t cellphones because they were not connected to a telephone network. Users could not dial numbers from their cars.

In 1910 Lars Magnus installed a telephone in his car, it wasn’t a radio telephone. While driving in the country, he connected using a long pair of wires to the national telephone line.

In Europe, radio telephony was first used on first class passenger trains between Berlin and Hamburg in 1926. Also in 1926 radio telephony was introduced on passenger aircraft for air traffic security.

In 1946, engineers G . Shapiro and I . Zaharchenko successfully tested their version of a radio mobile phone mounted inside a car. The device could connect to the local telephone network with a range of 20 km.

The first person to have a mobile phone was Prince Phillip, who had the system fitted in the trunk of his Aston Martin. The prince could make a phone call to the queen while driving, which was thought to be quite amazing.

In 1958, Kupriyanovich resized his radiophone to “ pocket version”.

So thats the process of the cellphone we have today!