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's from the top right around the camera and it's not the power button because I hold it down and there's still a rattle. It was very faint on my original but now it's more noticeable
I went into the Apple store about my rattle and the Genuis guy took one apart and showed me the vibrating switch in the corner wich he stated was normal to rattle.
The word on the net is that the iPhone 5 reverted to a more exuberant rotational vibrator like the iPhone 4. I have not opened any of my phones to confirm.
With the 5, they went back to the vibrator that's on the 4. The 4S has a different vibrator. The 4S has a more subtle vibration, as opposed to the more "harsh" feeling, louder vibrate on the 4/5.