Dr. Martin Cooper invented the first portable cell phone in April 1973.
The first mobile phone handset weighed about 2.2 pounds.
A man talks on his mobile phone while standing near a conventional ... The
transmission of speech by radio has a long and varied history going back to ...
Sep 9, 2014 ... A look back at the many iterations the mobile phone has gone through over the
Apr 16, 2015 ... All the mobile phones that mattered from the first Nokia handset right up to the
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Could you survive without your mobile phone? Cell phones have become
incredibly advanced in a relatively short amount of time, and the possibilities for
3 days ago ... Although most of us feel like we couldn't live without our mobile phones, they've
not really been in existence for very long. In fact, mobile ...
A photographic history of mobile telecommunications.
1921 The Police Department in Detroit, Mich. begins installing mobile radios,
operating around 2 MHz, in their squad cars. ... 1970 Cell phone lobbyists finally
win with the FCC and get a window of 75 MHz in the 800 MHz ... Cell Phone
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