AdDuplex has released their regular monthly report for December 2013, culled from data generated from more than 5000 applications which integrate their cross-promotion service.
The numbers confirm that it is basically only Nokia which is still selling Windows Phone 8 handsets, with the company now more than 92% of the Windows Phone 8 installed base.
They also show the continuing ascendancy of the Nokia Lumia 52x family, with the 520 and 521 together making up 34.1% of the Windows Phone installed base, and more than 43.5% of the Windows Phone 8 installed base.
In USA the 52x family is now also coming on strong, with a combined share of 42.4% share, closely matching the world-wide market.
The good performance of the handset has pushed the GSM carriers to first and second place, and Verizon without a cheap unlocked Windows Phone has dropped to 3rd.
The Nokia Lumia 52x family is however not the only handsets that are growing, with the Nokia Lumia 625 growing from 2.9 to 4.5% in only one month, and the Nokia Lumia 1020 moving from 13th to 11th place, now officially ahead of the Samsung ATIV S. while the Nokia Lumia 1520 grew from the 19th to 16th spot.
The full report will be published later today.