Press Release:

Waterloo, ON – Research In Motion Limited (RIM) (Nasdaq: RIMM; TSX: RIM) will report results for the third quarter of fiscal 2006 on December 21, 2005 after the close of the market. A conference call and live webcast will be held beginning at 5 pm ET, which can be accessed by dialing 416-640-1907 or by logging on at http://www.rim.com/investors/events/index.shtml. A replay of the conference call will also be available at approximately 7 pm by dialing 416-640-1917 and entering passcode 21117894#. This replay will be available until midnight ET January 11, 2006.