Of all the phones in the BlackBerry lineup, the Curve is the one that makes or breaks RIM's performance as it's the most universally appealing: it has to suit not only the corporate rank and file but also those texting their friends or posting to Facebook. As such, more is riding on the success of the Curve 8900 than on even the media darling phones like the Bold or Storm. The new smartphone is technically superior to older Curves in nearly every way; our goal in our full review is to see whether that's enough to dislodge competition from Apple, Nokia, and a host of others.