[diminish]

Nokia forms the majority of WP sales and boosters are the cheaper models like 520/21. A good quarter of the sales are pre-WP8 models.

Finally, Nokia sales in North America and US, is lagging behind other continents. That's maybe from an app sales perspective Nokia doesnot make a lot of bang!.

US is mainly an AppleLand, and app store app sales get huge boost from having a big portion of iPhone/iPad subscribers here.

[warrenmiller]

Android is now more popular than iOS in the US, see "Smartphone Platform Market Share" http://www.comscore.com/Insights/Press_Releases/2013/6/comSc...