The AdDuplex, who has got access to plenty of important data from their application promotion network and who publishes a monthly report about it, have now looked at their numbers and found that it is more likely that even more Windows Phones have been sold in the Q4 than the Q3 of 2013.
After all, more than about 10 million new Windows Phone handsets have landed in the consumer hands in the last holiday season.
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Their conclusion is basically based on that assumption that no significant number of Windows Phone 7 based handsets were sold last year, and a number of other logical assumptions, but that is of course not as solid as an actual announcement by the owner, Microsoft or their largest distributor, Nokia Inc.
Crucially, AdDuplex also suggests more Windows Phones were been sold in the Q2 than Q3, and that there were therefore a significant number of handsets in the sales channel in the past Q3 already, waiting to be sold in the Q4.
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The AdDuplex suggests that, there are now around about 35 million Windows Phone 8 handsets in use and more than 45 million Windows Phones in total in active use.