I'm not sure but my guess is that when Martin Cooper, (a Motorola employee then) stood in midtown Manhattan in 1973 and placed a call to the headquarters of Bell Labs in New Jersey he probably didn't have a clue as to what he had just invented. I mean if the mobile phone was a human being, by now that baby (mobile phone) that was born on 3rd April, 1973 would be 41 years and 4 months old and as would be expected at that age, s/he should be a mature human being by now.