Microsoft announced a record quarter yesterday, earning $5.24 billion on revenue of $18.53 billion.
Part of that success story, despite decreasing Windows revenue, there was growth in Windows Phone licensing, which grew by $102 million last quarter.
Microsoft unfortunately does not break out Windows Phone itself in the Devices and Consumer Licensing segment, so we do not know exactly how much Windows Phone is earning for them at present.
The $102 million increase also includes Android patent licensing, making it difficult to say it if represents growth for Android or Windows Phone.
On the other hand having Android patent revenue assigned to Windows Phone means Samsung, HTC and LG are all paying for the development and marketing of Windows Phone, which is somewhat ironic in the end, given the level of support they give the OS in general.
See the relevant results at Microsoft here.