Windows Phone 7 is facing a huge uphill battle when you consider the market shares of Apple’s iPhone and Google’s Android devices, but Microsoft is confident it will make a dent over time. Today, the company revealed that it’s sold 1.5 million units of Windows Phone 7 within six weeks since it launched.

Achim Berg, vice president of business and marketing for Windows Phones, noted in a Q&A posted {link no longer active} to Microsoft’s website, that the sales number is, “in line with our expectations especially when compared to other new platform introductions.”

[a]listdaily recently spoke with Microsoft about its ambitions in the mobile space, its marketing around the device, and gaming on Windows Phone 7. You can read that feature here.