Microsoft may have inked a deal with Nokia, but that doesn't mean other mobile manufacturers have been so easily wooed by Redmond. 

Motorola vice president Christy Wyatt denied that Motorola was considering a jump to Windows Phone 7.

I don't envision us using Microsoft. I would never say never but it's not something we're entertaining now, she said.

Noting that her company is the only one to feature the Android platform on all of its devices, Wyatt said that a major concern for Nokia over Windows Phone 7 was the closed nature of the platform. Android, in contrast, is open source, a feature that allows manufacturers to alter the operating system to suit the needs of individual devices without paying a license fee.

Wyatt also cited Window's Phone 7's late entry into the smartphone market as another concern. According to a recent report from comScore, Windows has only 9 percent of the smartphone OS market, while the BlackBerry OS has 33.5 percent and Android and Apple's iOS have 26 percent and 25 percent, respectively.

Wyatt's comments come shortly after Microsoft's deal with Nokia to feature Windows Phone 7 on Nokia's phones. Nokia CEO Stephen Elop said that much of his company's rationale for working with Microsoft emerged out of a fear of a possible duopoly between devices running Apple's iOs and Google's Android operating system.

By partnering with Windows Phone 7, we've established a very different dynamic, and created an environment where Windows Phone 7 is a challenger. We've created a three-horse race, Elop said.

Motorola's Chirst Wyatt, however, said Motorola did not share those concerns. The latest big releases from Motorola, the Atrix smartphone and Xoom tablet, both feature versions of Google's Android operating system. 

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