Another month has gone by since we last looked at Windows Phone statistics from data provided by AdDuplex . Last month we looked at the Windows Phone ecosystem for the month of April 2014. There we learned that Windows Phone 8.1 was already on 3.1 percent of all Windows Phone devices. How did that number do for the month of May? Read on to find out.

Windows Phone 8.1 now on 5.2 percent of devices

That’s right. The update only available to ‘developers’ and those with the Lumia 630/Lumia 635 has crept up to over 5 percent. Windows Phone 8 comes in 77 percent and Windows Phone 7.x drops a little to 17.8 percent.

The Nokia Lumia 520 is still the most popular Windows Phone ever. That said, other devices are slowly gaining popularity and eating into the Windows Phone device market share that is commanded by the Lumia 520. About 33.7 percent of all Windows Phone devices out in public right now are the Lumia 520, followed by the Lumia 625 in the number two position with 6.7 percent and the Lumia 920 in third with 6.2 percent. The surprise is the Lumia 521 (exclusive to T-Mobile here in the United States) jumping seven spots to take the number four position with 6.0 percent.

Top phones around the globe

Here are the top three phones for a handful of regions around the globe. Note the dominance of entry-level models in every country.

United States

Nokia Lumia 521 (36.7 percent)

Nokia Lumia 520 (18.2 percent)

Nokia Lumia 920 (7.4 percent)

Brazil

Nokia Lumia 520 (45.0 percent)

Nokia Lumia 710 (15.7 percent)

Nokia Lumia 720 (11.5 percent)

Spain

Nokia Lumia 520 (52.1 percent)

Nokia Lumia 625 (10.0 percent)

Nokia Lumia 710 (6.8 percent)

South Africa

Nokia Lumia 520 (51.1 percent)

Nokia Lumia 610 (9.4 percent)

Nokia Lumia 920 (5.4 percent)

Russia

Nokia Lumia 520 (19.6 percent)

Nokia Lumia 920 (9.5 percent)

Nokia Lumia 720 (8.0 percent)

France

Nokia Lumia 520 (43.3 percent)

Nokia Lumia 625 (14.8 percent)

HTC 8S (6.5 percent)

Czech Republic

Nokia Lumia 520 (27.6 percent)

Nokia Lumia 920 (10.0 percent)

Nokia Lumia 800 (8.3 percent)

Poland

Nokia Lumia 520 (24.5 percent)

Nokia Lumia 625 (13.4 percent)

HTC 8S (9.4 percent)

India

Nokia Lumia 520 (39.7 percent)

Nokia Lumia 720 (12.2 percent)

Nokia Lumia 625 (8.5 percent)

Thailand

Nokia Lumia 520 (44.3 percent)

Nokia Lumia 620 (16.5 percent)

Nokia Lumia 720 (11.9 percent)

The data above was collected on May 26th from 4114 Windows Phone apps running the AdDuplex SDK. The full report will be available tomorrow at blog.adduplex.com.