If you actually stopped and took time to consider the power that you hold within your hand when using your smartphone you'd probably be shocked at how far devices and manufacturers have come in such a short space of time. The announcement and release of the Apple iPhone back in 2007 lit a fire under the smartphone market which for the first time saw mainstream users start to part with as much cash as business users and executives alike. Now, thanks to a brilliantly put together video by CNET, we can take a look at the evolution of smartphone design over the last eight years.