Chosen Solution

Hi All, A small black plastic part, shaped like a right triangle, fell out while I was tearing down my son’s iPhone 4s for repair. I searched the interwebs and couldn’t find anything like this particular part. As shown in the attached image, one side of the part has a circular-shaped impression/depression in it, and the other side is flat. The circular depression is not a hole and does not go all the way through the piece. Any idea of where this piece came from? Thanks in advance!

iPhone 4S Dock Connector Replacement iPhone 4S Dock Connector Replacement Too me it looks like this part. Remove the small black spacer that was under the Phillips screw near the vibrator. Its the spacer.