He said he will stick with BlackBerry company despite founder Mike Lazaridis's exit.
BlackBerry will launch its new touchscreen smartphone in the U.S. with AT&T on March 22.
BlackBerry CEO acknowledges U.S. release date is disappointing, but U.K. sales have been promising.
Unveiling two smartphones and the BB10 operating system, Research in Motion renames itself BlackBerry.
BlackBerry manufacturer Research in Motion changed its name to BlackBerry the same day it released the BlackBerry 10.
RIM's shares spiked as investors wait to see if BB10 will bring the adoption the company needs to stay competitive with other major smartphone makers.
RIM needs BlackBerry 10 to be successful to maintain its customer base.
Leaking photos of the BlackBerry Z10 and launching an app contest for its latest OS, RIM hopes to incite anticipation for its new smartphone.
Worries about future revenue cause share slump.
Research In Motion, lost subscribers for the first time last quarter, as the number of BlackBerry users dipped to 79 million.
