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The lightning connector assembly contains many different integrated components:
Lighting connector, responsible for charging and connecting your phone to your computer or accessory.
Microphone
Headphone Jack
If your phone is no longer recognized via USB cable, it may be time to replace the lightning connector.
Replacing the lightning connector should fix charging and connectivity issues.
Remove the following four Phillips #000 screws:
One 3.1 mm screw
One 2.9 mm screw
One 1.5 mm screw
One 3.4 mm screw
Use a spudger to pry the Lightning connector cable up from its socket on the logic board.
The Lightning connector data cable is held to the logic board and rear case with mild adhesive.
Use an opening pick to slowly separate the cable from the logic board.
Continue prying with the flat end of a spudger.
Continue prying with an opening pick to separate the Lightning connector assembly from the rear case.
Be sure to separate all parts of the assembly from the rear case, including the Lightning connector, headphone jack and home button cable socket.
Remove the Lightning connector assembly.
Examine your replacement part, and your original cable carefully to be sure they match. Your replacement Lightning connector assembly may be missing certain components that need to be transferred from the original.
Components that commonly need to be transferred include a clip routed along the left and top edges of the headphone jack, the rubber microphone cover, and the bracket for the Touch ID cable connector.
There are several spacers loosely placed on screw posts under the Lightning connector assembly. While not essential to phone function, you should replace these washers where you found them when reassembling the phone. Spacers may vary between devices, this unit has spacers as follows:
One bracket
One C washer
Two small washers
If you are removing more components, take these pieces out and set them aside for safe keeping.