I returned my first 5s because the screen was loose near the top right side. My new one was fine at the store but today I noticed it was clicking a little when I pressed down near the volume buttons. I played with it and it seems to have gone away. I've read numerous threads about this (mainly 5 threads). I'm confident it's not a glue issue as I've watched a couple of screen replacement videos. It looks like the screen clips into place before the bottom screws are installed. Anyone else experiencing this? Also wondering if anyone here has replaced their screen and could tell me how the screen is actually held into place? Thanks!