On my old phone I wrote an app to write screen brightness values directly to the underlying Linux device. It bottomed out at either 3 or 5, which was still way below what the normal brightness slider allowed but it seems there’s a hardcoded non-zero lower limit.
crt brightness could be brought down to zero back in the day.
Can that not be done with LCDs and OLEDs? Turn off the backlighting at least?
On my old phone I wrote an app to write screen brightness values directly to the underlying Linux device. It bottomed out at either 3 or 5, which was still way below what the normal brightness slider allowed but it seems there’s a hardcoded non-zero lower limit.
Whoever hardcoded that probably was a victim of the prank one time too often. 😔