Windows Phone OS 7.0 is built from the same core building blocks as its Windows Mobile OS predecessors: A Windows CE/Embedded Compact layer at the base, with a bunch of mobile customizations on top.

Might the next major version of the Windows Phone OS work on 7- to 10-inch devices? The latest Windows Phone rumors indicate it might be possible.

Microsoft says its new mobile operating system, Windows Phone 8, will be deeply integrated with the Windows 8 OS in tablet and desktop PCs. No upgrade for existing WP7 users, however.

Microsoft is believed to have shipped the RTM version of the Windows Phone 8 operating system, according to sources. Now it's time for carriers and handset makers to test and preload before the ...

Windows Phone is a proprietary mobile operating system developed by Microsoft. Windows Phone introduced a new design language, previously called Metro UI, but later renamed to simply Modern ...

We managed to finally get our hands on the finalized (or very near finalized) software development kit (SDK) for Windows Phone 8--the one where only select developers were given access too. The ...

Windows Phone 7 has some innovative and unique features, but are they enough to win over consumers? We pit Microsoft’s new mobile OS against Apple’s iOS and Google’s Android to see how it ...

All this iPhone 4 news not doing it for you? Still got Windows Phone 7 on the brain? There’s a simple—and most importantly, free—way to try it out, right now, on your PC. Windows Phone 7 ...

Where Windows Phone should go from here Microsoft's latest Windows Phone OS makes quad-core phablets possible, but it still trails behind OS rivals. Here's what needs to happen.

Microsoft’s mobile operating system has left the building. Windows Phone is no more. While Microsoft’s previously announced ‘end of support’ date for the mobile operating system of July 11 ...

Microsoft's Satya Nadella has confirmed that the next version of Windows, probably Windows 9, will unify the Windows, Windows Phone, and Xbox operating systems into 'one single converged operating ...

How do you factory reset a Windows device when the factory reset feature is missing?