Quote:
Originally Posted by apple_hobbyist  Hello,
I am new here in the GSM forum and have a problem where I can't get any further. I have received an iPhone 12 Pro which has not been opened before. The screen brightness is permanently set to about 20%. |
I don't necessarily have exact answers for you but it's a common issue in the 12 that if it doesn't see the ear speaker flex that the screen is stuck on dim. It's essentially a software bug.
I had one I couldn't get out of that mode until I ran across a post somewhere that if you change the display zoom it snaps out of it. (settings->display & brightness ->display zoom) Was stunned when it worked! So worth a try.
Given all you've done, your issue may be something more. Maybe try a new ear speaker flex..