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It hard to select any one Windows Phone 7-based mobile device that's most unpopular with consumers and enterprise users. That's because none of the products are selling well, and speculation abounds that Windows Phone 7 might be dead before it even gets going. The issues with Windows Phone 7 are numerous, including issues with updating, multitasking and more. Microsoft is promising big things in its upcoming Mango update, but will it be too late?

The Nokia N9 isn't even out yet and it's already clear that people around the globe just aren't all that excited about it. For one, the N9 is based on MeeGo, a Linux-based operating system that most consumers have never even heard of. Plus, Nokia's other smartphones continue to have trouble appealing to customers that are more intrigued by Apple's iPhone or various Android models. The Nokia N9 might just be dead on arrival.