The sqeaking sound caused by the bottom chassi rubbing against the frame. The fix is to remove the bottom plate with P5 screwdriver, note the different screws. Then clean the edge where the chassi and bottom part meets, especially in the corners. I also put a tiny amount of silicone grease in the corners. Just watch with the grease not to touch any component.

Hello Dan! I have an 16" 2021 macbook pro A2485 m1 model. 1 px horizontal line halfway faded appeared at the top of the screen just after my warranty expired... Is this also caused by the tcon overheating? M1's supposed to run much cooler...

You need to reset the privacy settings in IOS, then it will recognised again. "If you have not connected your iPhone to your computer in a while and the computer was updated with new software, there could be some trust settings issues. In order to check and resolve this issue, Open your iPhone, tap on Settings > General > Reset > Reset Location & Privacy."