If this had happened to me I would have:
1. Accepted the phone from the cc.
2. Dismantled it as much as I could, ie battery out, back taken off etc. or if it was an iphone, turned it on to see if it really was an iphone.
If there was any doubt, I'd stop and evacuate the a/c straightaway.
If it was plainly a lost phone, I'd pocket it and say nothing. It would be 'rediscovered' on the next T/R.
Oooooh! Aren't I a devil?
