Did you know that the initial release of the Android OS was on September 20, 2008 which makes it today exactly 4 years old. Happy Birthday Android!!!
As a curiosity the building blocks of the OS were put together in October, 2003 by Andy Rubin(co-founder of Danger), Rich Miner (co-founder of Wildfire Communications, Inc.), Nick Sears (once VP at T-Mobile), and Chris White (headed design and interface development at WebTV).
While the first smartphone running Google Android operating system was the HTC Dream, released on October 22, 2008.
If you want to learn more about Android’s history follow this link here.