i noticed that the home button on my iphone is loose. sometimes it makes a clicking sound when i move it up and down. yes, i know i am not the only one. i really don't mind, but im curious if this issue will lead to something worse. for example, is it likely that my home button will stop working all together because it is loose? etc. everything else is fine with my phone (as far as i can tell), and i really don't want to exchange it for another one.