The big change this month is that, after almost three years at the top (since July 2013), the 520 is no longer the most popular Windows Phone device in use. That title now falls to the Lumia 535.
Windows 10 generation phones are still nowhere to be seen in the top 10 including such previous Windows Phone strongholds as Italy, Russia or India. The only bright spot is UK where Lumia 550 has gained some momentum.
In addition to the US we look in detail at the devices in use in the UK, Italy, Russia, Australia and India.