Smartphone Effect of Human Life
Researchers and scientists have been thinking about wireless telecommunication systems since the invention of the telephone. But we will start with World War II without going into such a long history. During the Second World War, in 1940, the military used radio and telephone. Reginald Fessenden was the inventor of this radiotelephone system. Then in 1947, the first call was made from a car. The first call was made on June 17, 1948, from Laos, Missouri, under the Bell telephone service. Then, on October 2, 1948, Elion Bell made a telephone call again