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IPhone 4 Black Rubber Piece
What is this black rubber part?
This rubber piece protects the screen cables from being cut by the corner of the motherboard. If it’s left out then there’s a greater chance that the screen cables will be rubbed on during general wear and tear.
Where does the extra black rubber piece go?
See the video below for how to put this black rubber part back in your iPhone 4.
iPhone 4 Metal Piece Left Over
Another peice that you may have left over is this small metal part! If so just see our metal part guide for where it goes.