Can someone identify these two parts and where they go?

I disassembled my out of warranty iPhone 4S to repair a broken lock button. However, I can't find anywhere on the web where these two parts go. I have found pictures of the part on the left, but it's not identified as to where it goes so I am at a loss. I have not been able to find any picture of the part on the right. Help is much appreciated.

Thanks,

Al

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