January's AdDuplex report does little to bolster the position of Microsoft's Windows Phone. The report reveals changes within the Windows Phone ecosystem as opposed to comparing it to Android and iOS sales. In turn, it shows some interesting bits about OS version growth and which Windows Phones sell the best and where. Windows 10 on 10%

Windows 10 Mobile continues to take a slice of the Windows Phone OS pie with 9.5 percent for the month of January. That is an increase of 0.7 percent from last month, but as AdDuplex notes that number is likely driven more from new hardware adoption (e.g. Lumia 550, 950, and 950 XL) rather than new Insiders. The latter group may have finally peaked with late adopters now waiting for official updates rather than jumping into the risky tester pool. Best VPN providers 2020: Learn about ExpressVPN, NordVPN & more Windows Phone 8.1 still dominates at 77.7 percent, but Windows 10 Mobile is on more devices than Windows Phone 8.0 at just 8.4 percent. Lumia 520 is still king

Back in early 2013, the Lumia 520 became the shocking buffer that saved Windows Phone. Seemingly out of nowhere, the phone was quickly being used by many new faces. Priced right with robust features for the time the Lumia 520 was a precursor to the quality budget phone craze that later took the industry. As noted in our previous coverage, it only took one year for the Lumia 520 to become the most popular Windows Phone in 2014. Unfortunately, Android OS and Chinese manufacturers came onto the scene and stole Nokia's thunder. Soon after the market was flooded with just as good – if not better – spec'd budget phones with a more popular OS. Nokia – and eventually Microsoft – have been unable to capture that lightning in the bottle again ever since. Looking at January's numbers and in 2016 the Lumia 520 continues to represent 12.9 percent of all Windows Phones globally more than any other (the Lumia 535 is next at 11.7 percent). The fact that a phone announced three years ago is still the king of Windows Phones puts things into perspective. Nokia and later Microsoft have been unable to convert those 520 owners into owners of newer or better Windows phones. Devices like the Lumia 640 (6.3 percent) and Lumia 640 XL (3.3 percent) have done admirable especially if you consider them the same phone (for 9.6 percent total) with just slightly different specifications. Those phones were announced just under one year ago. Unfortunately, there are no data points for the new Lumia 550, Lumia 950, or Lumia 950 XL. Considering the pricing of at least two of those and the late launch of the Lumia 550, perhaps that is not too surprising. It is not reassuring either, as no one, not even Microsoft, are expecting those phones to push any real numbers. Still, it would have been nice to have been surprised by this AdDuplex report. BLU overtakes Huawei

Another interesting bit is that BLU with their Win HD and Win JR phones (0.27 percent) have barely passed Huawei (0.26 percent) for Windows Phone manufacturers. Considering Huawei has not had a phone in years, it is surprising it took this long. Despite efforts from BLU companies like Samsung (0.59 percent) and HTC (1.21 percent) still have double and quadruple the market share. Brand names matter, folks. Lumping Nokia and Microsoft devices into one group and the legacy duo still make up a massive 96.97 percent of all Windows Phones. That number is virtually unchanged as newer OEMs like Acer and Alcatel OneTouch have yet to launch any new products with Windows 10 Mobile. Around the world