I think that's better than being sunken down like the other poster said. On all my iPhones, the button always seems to lower after time bc we press it so much.
Apple should just do away with the home button now that there's gestures for everything anyway. So many people end up having problematic home buttons.
I JUST got a new one yesterday and I had the same issue...didn't feel like going to exchange it as it works perfectly. So...I tried giving the home button a couple stiff, sustained presses. Not crushing pushes, but firm. And it seemed to settle in just perfectly
I'm not suggesting you do this yourself, not sure of the long term effect of trying this will be. But just thought I'd pass that on.
TR
Apple should just do away with the home button now that there's gestures for everything anyway. So many people end up having problematic home buttons.