I keep my phone in my front pocket 90% of the time. However, there's been a number of times where I've been distracted, and have slipped it in my back pocket just before sitting on it, such as finishing a conversation just before getting into the car or working on something that may get my front wet, like gardening. It's a nice adrenaline rush feeling it under me all of a sudden, but, thankfully, I've never inflicted damage like that.