iPhone 4 Logic Board Replacement

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Remove the following two screws:
One 1.2 mm Phillips
One 1.6 mm Phillips
Remove the thin steel dock connector cable cover from the iPhone.
Before reassembly, be sure to clean all metal-to-metal contact points on the dock connector cable cover with a de-greaser such as windex. The oils on your fingers have the potential to cause wireless interference issues.

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