Well, another good reason not to have a flip phone. Maybe I'm uncoordinated, but there's no way I could get my phone out of its plastic bag and open the hinge while riding, never mind dialing it. One more year on my contract...

I really, really think it's a bad idea to dismount or stop in a dicey situation like that. In cycling shoes you can't run, you can't really even walk efficiently. Half clipped in, you're a sitting duck attached to your bike. Even if you're a quick-thinking triathlete who can get out of her shoes and run barefoot in nothing flat, your top speed running is going to be maybe half or a third of what it would be on the bike. Never mind that while obviously your personal safety is more important than ANY property, it doesn't make sense to abandon your only means of escape, to potential thieves. Still, it wouldn't be a bad idea for all of us to work on skills like curb-jumping and off-roading, for the usual reasons primarily, but also to be able to get where a car can't follow.

Re: keeping phone in an unzippered pocket, there was a thread on here a couple of months ago where someone lost their phone out of a jersey pocket. I'm always afraid of that happening when I'm head down, butt up.