on 23-09-2012 00:55
I was going to say the same.
The rattle is the camera lens and is normal. The iPhone has what the call a floating lens, which is why u here the little rattle. It has done it in my iPhone 4, 4s and now 5.
Some dearer digital cameras use the same technology.
Use iPhone XS Max dual sim, SE, Honor 10, IPad Pro 11, Apple Watch 4 LTE, 100+ Mpbs Barrier and a Record Player.
on 23-09-2012 10:51
Yeah It's the lock button, I'm going to say almost every single iPhone 4/4S/5 does it, thats how after about a year all the dirt gets into and it starts jamming. There isn't much they/you can do as it needs a gap around the side to be able to push down but yeah, that's the rattling.