The mobile industry is a burgeoning one, with a whole host of different companies vying for the top spot. At first, the top spot belonged to Apple, as it comfortably swept aside the competition and rose to the fore. However, Apple was unable to maintain its advantage at the top, and a lack of innovation and ingenuity on their part saw the American behemoths fall second to South Korean tech giants Samsung. Samsung had partnered with Google, and their excellent Samsung Galaxy line of mobile phones has been popularly received throughout the globe. The mobile phones have become hugely popular not only for their performance as well as their outlook. But, are they good enough? Can they compete with others? Here's a brief guide on the different mobile phone operating systems.