I have auto brightness turned off, and I still notice sometimes my iphone will get dimmer randomly. When it gets dimmer, I check the brightness and it's on max brightness, so I'm not sure what's going on. Could someone advise?
I am using iphone 12 pro on iOS 13.1 though this problem occured in the past on older iOS versions. The use is indoor and there's seemingly no lighting change in my environment
Maybe this abrupt luminosity changes are linked to your battery level and therefore the automated activation of low power mode. Low power mode slightly reduces your luminosity while in use. It normally activates automatically when your battery reaches 20% and deactivates when your battery is at 80%. If you are using your iPhone while charging it, it might be a reason.
There are 2 solutions to me:
Disable low power mode when it pops up.
Or, create an automation the "Shortcuts" saying that when low power mode is turned on, disable low power mode.