Devices running the Windows Phone 8 operating system hit the market late October. The update includes many promising features that should help Microsoft compete with Apple's iOS and Google's Android in the mobile market.
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Microsoft Reveals Windows Phone 8
Before we move into this next phase of Windows mobile devices, let's take a look back at how we got here. Scroll through the photo gallery above to see how Microsoft's mobile UI evolved from Pocket PC to Windows Mobile to Windows Phone 7.