Microsoft and component suppliers in Asia are in the initial stages of testing a smartphone design, according to a report Thursday in the Wall Street Journal.
A source cited in the report says the phone has a screen size of between four and five inches.
Top smartphones from Samsung, Apple, HTC, and Motorola all have screen sizes in that range.
But officials at component suppliers added that they're not sure if the Microsoft phone would go into mass production, according to the report. Microsoft did not respond to a request for comment....