Images of old cell phones from the 90s are a surefire way to spark laughter-they are big, cumbersome, and look ridiculously outdated compared to the small gizmos we have today. So it should be surprising to learn that the first conception of crude, mobile phones actually dates all the way back to 1947. Researchers tried to evolve the technology used in walkie talkies. They realized that by using small cells instead of relying on single frequencies they could reuse the same frequencies, and thereby dramatically increase the traffic capacity. In other words, the initial kernel of invention was present, but unfortunately its potential was halted.