Where does this rubber come from? (Please help if you DIY iphone 4 before)

[oceanb70]

See attached picture, where does it come from? it just drop from no where.

 

[cal6n]

I think that fits over the edge of the central metal sheet of the frame assembly to protect the display ribbon cables from chafing. I think you can just see it here, in a photo from ifixit.com

 

[pjo]

I do not see anything like it from the image of the results of the ifixit teardown, you may want to ask on their site though.

 

[cal6n]

Looking through their images on the site, I can't see it either but, when I took an iPhone apart to replace the screen, I'm fairly sure that's where it was.