Planning on getting a G4 this Saturday (giving my Note 3 to my daughter). Have been trying to learn as much as I can about the G4. A website I have gone to is "ifixit.com". A very interesting site, has "how to" videos & articles about fixing almost any electronic device. I did not see a video about G4 but there was a teardown of a G4 with pictures of the procedure & simple x-rays of various components. It seams like it would be relatively easy to repair any part. He only used a #0 or #00 phillips screwdriver & various picks, no part was soldered. The only problem was the screen, which probably could not be removed (entire top would have to be replaced.
After removing the motherboard all other parts (camera, headphone jack, etc) could all be replaced relatively easily.
After removing the motherboard all other parts (camera, headphone jack, etc) could all be replaced relatively easily.