I was warm when I got to the platform at Fenchurch so I took my jacket off and folded it on my lap.
When the train pulled in and had disgorged itself of inbound commuters, I got up walked to the doors. At this point my phone flew from my jacket pocket and slipped down the side of the platform and next to the wheels of the train.
Luckily the new driver walked by at that moment and was able to get one of those litter grabber things from a cleaner and retrieve it for me without loss of limbs.
So now I have a scratched up phone that has made liberal contact with the ends of an item commonly used to pick up litter no one would want to touch with their hands.
Great. At least I still have the phone, I suppose.