Now that the initial hype surrounding Microsoft's Windows Phone 7 mobile operating system has died down, smartphone lovers appear to be ignoring it.

Market research from comScore shows that Microsoft's Windows Phone U.S. market share declined from 7.5 percent in March to 5.8 percent in June. Since the OS was released last October, Microsoft has lost 38 percent market share.

According to InformationWeek, this could mean manufacturers that had previously aligned with Microsoft, including Samsung, HTC and LG, may soon question whether WP7 is "worth supporting." The most troubling sign for Microsoft, the report said, is that the research includes Windows Mobile devices that have already been sold. That could mean that many who had jumped on the bandwagon early are abandoning WP7 devices for others, suggesting an interesting trend for those purchasing Samsung accessories.

However, the statistics could be a result of Microsoft's relative stagnance in the market while Nokia, its new manufacturing partner, prepares a new line of smartphones based on the operating system.

In the long run, this partnership has been seen as essential to Microsoft's expected success. According to IDC, Windows Phone 7 will see rapid growth in the next few years, growing to become the No. 2 mobile OS behind Android in 2015.