Gartner has published an interesting report, which details numerous points. The first is Nokia falling to position 10 in the first quarter of 2013. This is out of all mobile phone manufacturers (Samsung remains first). While Windows Phone is increasing its share and sales, Nokia has still yet to experience a surge that will replace the sheer volume of units the company used to ship.

It's not all doom and gloom, however. 

Gartner Q1 2013

As one can see in the above, Microsoft is climbing rather steadily from 2012. The company holds 2.9 percent of the market, while it only held 1.9 percent the same time last year - not a bad increase. With Blackberry continuing to dwindle, it's now time for Nokia and Microsoft to really push the platform. The Lumia 925 is a sign of things to come, and boy are those things going to be good.

Source: Nokia