Chosen Solution
I have replaced my screen and digitiser. When refitting the logic board I was having trouble putting in the top centre screw. When removing the logic board to see what the problem was, I found a loose grounding clip underneath it. It has provision for a screw to pass through it with a grounding dimple to the side. I would attach a picture but not sure how to through a URL link. I’ve looked at various videos and disassembly/assembly guides to see if I can spot where it goes but have had little joy.
You can upload an image to a image hosting site like imgur and post the shared image link here so we can see it that way. Is it where that long screw goes through the black metal plate with the silver thing that contacts that long screw? I think that part is like crescent / half-moon shaped and is silver / gold it should mount together with some black piece if I’m correct. Check Step 22 of this, I think the gold piece sits under that plastic part where that long screw usually goes in (above the earpiece speaker).
