Not sure when it came loose. Didn't fall out of the holster - the whole holster must have come loose. And it was such a short walk between when I know I last had it, and when I was settled in my car. Sadly, the only populated place I passed was a coffee shop with lots of high school kids. I'm guessing that someone is using this powerful device for nothing more than SMS messaging, and will never spring for Blackberry service. Sigh.