I replaced the front facing camera, but it didn’t resolve the problem with the front facing camera. The socket on the logic board must be damaged.

You should take the board out of the enclosure before you use a rotary tool on the device.

If the screw is stripped, why would you reuse it? You’ll have the same problem when trying to repair the Mac in the future if you need to repair it again. Don’t they have those screws available as a kit (with other screws) on iFixit?

This part should be removed from the guide - it doesn’t work at all.

I don’t think the iOpener was effective at softening the adhesive. Using a suction cup and the spudger is good enough.

You won’t be able to put the spudger into the gap unless the phone is in a vertical position (speaker side up) in your hands.