Indeed. I have electrical items that have rattled apart on my truck. I've been through multiple GPS devices and a Blu-Ray player, for example.
I would imagine that a smartphone that sits regularly upon a heavily used rifle might experience similar rattling.
Maybe not, but while I might attach a phone to my rifle for amusement purposes, I wouldn't actually USE the rifle with the phone attached. Just seems like it might be bad for the health of the phone.
[ Post made via Mobile Device ] 