Alexander Graham Bell was born and saw the first light in Scotland. He worked with a number of deaf and mute people at the famous Boston University and passed valedictorian with his superhuman achievements. After that, he became a scientist and worked with his assistant. Then Martin Cooper was the former director of the Bell lab company that invented the world's first cell phone. And for the first time, the world's first mobile phone was launched in 1947 in the United States.

Alexander G.Bell was born in Scotland. He worked with  deaf-mutes at Boston University. Work with his assistant, Thomas Watson invented the world's first cell phone. After that, they traveling all over America to demonstrated to public countless exhibitions and by the 1877, the first cell phone to be put into commercial use.