That’s not “Windows phone” that’s “Windows mobile”, the precursor to Windows Phone, which didn’t release until 2010.

Shifting to Windows Mobile now, in 2006, Windows Mobile 6 had only about 10% market share, behind both Palm OS and Symbian, the latter of which held a whopping 60%. I looked further back in time and I do see that Windows Mobile had a 34% market share in 2001, however it was again dwarfed by PalmOS. It’s also worth it to note that that 34% wasn’t comprised mainly of cellphones, but rather barcode scanning guns in warehouses and logistics, because you could make custom applications for them with relative ease. There are still warehouses today that use those old windows mobile scanner guns.