iPhone 4 screw washer problem. Don’t know where it came from

iPhone 4 screw washer problem. Don’t know where it came from.? I want to change iphone 4 display and everything goes good but when you untie all screws there are 6 washers from the side. And I put telephone upside down and 1 more thick washer fell out. Anybody know where it came from and where to put it back. Need answer quick! Thank You



Answer #1
Take a pic of the back of the phone (open), I might be able to figure it out. I’ve opened up a few iPhone 4’s last year to fix em.
Answer #2
Take a pic of the back of the phone (open), I might be able to figure it out. I've opened up a few iPhone 4's last year to fix em.
http://www.ifixit.com/Teardown/iPhone+4+Teardown/3130


Answer #3
That doesn’t look like a COMPLETELY necessary part…i’d suggest fixing it all back up (without that part) and see if the phone works as normal.
There’s a 90% chance it’ll be fine.
Answer #4
That doesn't look like a COMPLETELY necessary part...i'd suggest fixing it all back up (without that part) and see if the phone works as normal.
There's a 90% chance it'll be fine.
do you think that this part belongs here.