I wonder if the following question is on-topic and if not if their is another Stack-Exchange site I could ask it.
From the repair tag description it seems like it is no on-topic but I just wanted to be sure and ask if there is a way change it to be on-topic:
Questions relating to electrical/electronic repair. Questions on the repair of consumer electronics, appliances, or other devices must involve specific troubleshooting steps and demonstrate a good understanding of the underlying design of the device being repaired. Please ensure your questions are somewhat generic in nature so they are likely to help future visitors and not too localized to a specific piece of equipment.
I am afraid my question is to specific as it is. But I wonder if I could change it to make it more general, for example by asking more about the function of the part.
The question would be:
I am currently trying to change the display of my LG G2.
When I tried to remove the display I noticed that one screw turned through. It turned out, that the electrical part the screw is attached to detached from the board. I assume that it was already detached before I started my repair efforts. I wonder if the phone can still work with this part being lose.
So my question is: What type of electrical part is the loose part and how does it work? .
Note: I had it fixed before so it was not the first time the display was replaced (not by myself)