The lateness of the iPhone 4S announcement and Samsung's lack of a Galaxy SII model in the US during Q3 really has permitted HTC to gain the #1 spot in the US :
http://www.bgr.com/2011/10/31/htc-t...pot-in-u-s-according-to-q3-data-from-canalys/
http://www.bgr.com/2011/10/31/htc-t...pot-in-u-s-according-to-q3-data-from-canalys/