Apple sticks a small strip of clear plastic with adhesive applied to one side to the logic board behind the camera cable connector to keep it in its socket. When moving it out of the way, be sure not to break any surface-mount components off the logic board.
Hold the end of the cable retainer down with one finger while you use the tip of a spudger to slightly lift the other end and rotate it away from the camera cable connector.
This step is only required if you have an anti-glare display.
Remove the two 8 mm Phillips screws securing the Bluetooth/camera cable retainer to the upper case.
One of the screws may remain captive in the Bluetooth/camera cable ground loop. If replacing the display, be sure to transfer this screw to the new unit.
Lift the Bluetooth board/cable retainer assembly out of the upper case.