Microsoft Testing A Surface Phone?

After the launch of the Surface tablet, Microsoft (MSFT) is reportedly is busy testing a smartphone with Asian suppliers, according to the Wall Street Journal.

However, it is not clear if the device will enter into mass production. The phone comes with a screen size between four and five inches, The Verge has reported.

Though previous reports suggested that Microsoft was mulling its own flagship Windows Phone, the device is unlikely to be unveiled before 2013.

The company is waiting to gauge the reception of its partners’ products — Nokia’s Lumia 820 and 920, HTC’s 8X and 8S, and Samsung’s ATIV S — before committing to bringing the phone to market. Unlike Android vendors, Microsoft keeps its phone hardware partners on a short leash, so few of the software elements can be changed. And even Nokia thinks it would be a good idea for Microsoft to release its own phone.

It’s possible that the company is waiting for sales numbers of its Surface tablet in order to see whether consumers are willing to buy into Microsoft as a device company.