In the 1870s, two inventors Elisha Gray and Alexander Graham Bell both
independently designed devices that
  could transmit speech electrically (the
telephone). Both men rushed their
  respective designs to the patent office
within hours of each other, Alexander
  Graham Bell patented his telephone first. Elisha Gray and
Alexander Graham Bell entered
into a famous legal battle over the invention
of the telephone, which Bell 
won.
The cell phone was invented because the military needed a way to

communicate with troops over long distances. The first cell phones were used in

wars and for long range communication

the Tlephone is one of the greatest inventions in history. Early

telephones were nothing like the ones we have today. Telephoneis the

Greek word for “far sound.” This is how the telephone became what it is

  today.