The first telephone conversation in history was made in Boston, the U.S. between the inventor Alexander Graham Bell and his assistant Thomas Watson on March 10, 1876.

“Mr. Watson, come here, I want to see you,” said Bell into his experimental telephone to Watson who was in another room but out of earshot.

Bell developed an acoustic telegraph and drew up a patent application for it in 1875.

A year after his patent was issued, Bell managed to make his telephone functional.

Bell’s invention originally had the same logic of operation as the electrical telegraph previously developed by the

Read more: 144 years pass since first words uttered on telephone