One thing's certain. Microsoft never has to worry about being sued by Apple or Samsung for copying their mobile operating systems.
Microsoft's new Windows Phone 8 OS for mobile devices is radically different from either the Apple iPhone's iOS or the Android. But just because it's different doesn't mean it isn't an elegant, efficient and easy way of navigating through a phone.
Windows Phone 8 is the latest upgrade to the mobile platform that uses an interface called Metro, which employs large tiles instead of icons. The tiles not only are buttons the user presses to open certain functions, such as starting music or entering voicemail, but they also display real-time notifications that are updated on the fly like on-screen widgets. So, from the main home screen, the user can see on the email tile whether there are emails to read.