32GB iPhone 3GS- Rattling Noise

[FU0991]

Hey, I was shaking my iPhone for Facebook up and down and noticed a rattling noise coming from the top left of the phone, by the camera. I wasn't sure if the rattle noise is suppose to be their or not so I tried my friend's white 16GB iPhone 3gs and noticed their was no noise in his. I then went to the apple store and noticed that the noise was also present on the display model iPhones. Does anyone know if the noise is normal or not? and whether I should take it to the Apple Store for a replacement?

 

[Matthew Yohe]

Sure that it isn't just the ringer switch? Mine slightly rattles when the phone is muted.

 

[Ivan P]

There's a few topics about this, if I recall correctly it's something in the autofocus hardware in the camera that rattles. It seems entirely normal for the 3GS.

 

[FU0991]

I see, but the only problem is when I compare my 32gb 3GS to other 16gb 3GS's there is nearly no noise. Does the noise develop over time, due to use?