It doesn't sound any different to the 4.
Well I compared mine against my girlfriends new iPhone 4s and mine is just comical. It rattles and the vibrate is seriously noisy compared to hers. Going to be visiting the genius bar.
One question- will they swap it out for a brand new one (with proper box) as its only a week old, or try and fob me off with a refurb? And I suppose the other question is... will they actually HAVE any new one's to replace it with?
Hmmmmm... I think i have a small scratch on the screen. does this affect the warranty at all?
They may try to attribute any physical damage to it being dropped (causing the rattle). They can be quite anal about these things...
Mine does it when I tap near the camera, though I'm not really bothered about it. It's not like I'm ever going to be tapping there really on purpose and unless someone told me about it, I doubt I would ever notice.
If for some reason I went and tried to get a refund from the Apple store they might not have any instock anyway. And as nothing is wrong with the phone I don't see the point.
It's the camera lens. It's been the case since the 4 came out, most rattle. Nothing to worry about.