According to an estimate of the second generation WP phones, Nokia has the most with 45% as extrapolated by WMPoweruser.
This is just for the second generation handsets. Nokia’s goal is to first become number 1 WP manufacturer and then compete with other manufacturers on other platforms. Currently as it stands, Nokia’s still only just on 4% of the overall WP market apparently. Given how small WP is, it doesn’t bode well that whilst Nokia are the most popular of the second gen handsets, it hasn’t made that much of a dent towards overall WP share. Perhaps there’s an error there with the numbers?
It could be that without actual sales data, the extrapolation from downloads skews the information. What we’re seeing is some trickling of the early results of Nokia’s Lumia journey. We won’t really see the true extent until Q2/Q3, and really only see proper ‘NOKIA’ WP handsets until they get with the Apollo programme.
Cheers mrprince for the tip