I know this thread is really old, but I'll answer to the best of my knowledge...
I had the old RAZR, and multiple times dropped it into small puddles at work. It was never submerged, but did get quite wet. I never had a single problem because of it... They aren't waterproof, but surely are protected from small quick bouts of being wet. I have read of people submerging them completely and not having issues, although I wouldn't test the theory.