I think mobile OS designed also peaked with Windows Phone 7. Android and iOS haven't touched the intuitiveness and usability it had. Not to mention the Nokia Lu

I think mobile OS designed also peaked with Windows Phone 7. Android and iOS haven't touched the intuitiveness and usability it had. Not to mention the Nokia Lumia hardware was light-years better in build quality then even most Android phones today. They were too late too market and lost developer mindshare with the Windows Mobile to Phone transition.