The evolution of iOS: From iPhone OS To iOS 8

iOS changed enormously over the last few years. When the first iPhone was released, the most entertaining thing to do was to watch YouTube videos and try to find a few web-based games. This was a time before apps, multi-tasking, or folders. Looking back, it’s amazing to see how iOS has transformed from a simple touch operating system, lacking a lot of key features, to a true computing behemoth with more features and tools than most iPhone owners will probably ever use.
Today, Apple's mobile operating system graduates to iOS 8, but before you dive fingers first into the new features, et’s take a look at how dramatically iOS has changed since its 2007 introduction.