Comment by mardef
That was Windows Mobile, which was the end of the line of the old Windows embedded line vs Windows Phone, the brand new OS made for modern (at the time) smartphones.
WP7 was the first of the new OS
That was Windows Mobile, which was the end of the line of the old Windows embedded line vs Windows Phone, the brand new OS made for modern (at the time) smartphones.
WP7 was the first of the new OS
Windows Phone 7 was another OS. Windows Phone 8 was the next totally incompatible OS just couple years later.