The AdDuplex Windows Phone Statistics Report from August 2015 indicates that the Lumia 520 and 630 remain the most popular devices globally, with the Lumia 640 gaining traction. The report covers detailed market shares across various countries, highlighting minor fluctuations in device popularity and manufacturer shares. Additionally, there is a notable increase in Windows 10 adoption, now present on 3.3% of devices, even while still in preview.