Complex sentence: The device was officially presented in Bochum, Germany, where it was entirely developed, on October 21,2009 by BlackBerry (then known as RIM) vice chairman Mike Lazaridis.
Split into simpler sentences: The device was officially presented in Bochum, Germany--where it was developed--on October 21,2009. The launch event was hosted by BlackBerry (then known as RIM) vice chairman Mike Lazaridis.