Didn't happen on my original 5, but this one has that annoying rattle thing, most clearly heard when it vibrates. There's always the possibility of it being lose but this is supposed to happen right?
It is possible the on/off and other buttons are slightly loose and will rattle. Also the camera lens is "floating" so it could also.
it uses a cheaper vibrating unit (i believe rotational) versus the previous iphone 4/4s (linear)
thus the reason for rattle
Nyet comrade. Try again.