In the battle for smartphone market share, Microsoft has unveiled its brand new "Windows Phone 7." It's a bid to take on Apple's iPhone and Google's Android device in an increasingly lucrative industry.

Microsoft unveiled its new line up of Windows 7 phones at an event in New York City- hoping the new handsets win back market share from rival Apple's iPhone and Google's Android system.

The new phones will initially be available on AT& T's network in the US and then available globally through 60 mobile carriers.