After installing the new display, the home-button is a little deeper immeresd in the display than before. As if the new display did not fit completeley inside the steel frame. When I look at the iphoen from the side - its also obvious that the glass above the steel frame is thicker than the glass on the back of the phone. could the new display (purchased from ifixit) be thicker than the old? I really tried hard to push the new display all the way into the steel frame and alle the screws attaching the display to the frame fitted in nicely.

Btw - the phone works fine and there is no visible gap between the new display and the steel frame.