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iPhone 11 Pro Why does my brightness keep changing from 100% to 80%

I'm not positive, but I would imaging the brightness settings on the new HDR display have to be tempered slightly.

I would just call Apple and ask
 
alpi123 said:
Could it be due to heat issues? iPhones usually reduce brightness when they get warm/hot.
Click to expand...
No man, I rarely touch my phone and I'm in a room with an ambient temp of 23C. I'm a light user. Barely use the phone to check my Instagram and Whatsapp
 
Has your phone ever gone down to 20% battery? If so, it could be low-power mode shifting the brightness down.

Other than that, no idea. I’d take it to the Apple Store.
 
since they're into automatically turning everything on that youve specifically turned off (Bluetooth, Wifi-) I wouldn't put it past them to automatically turn the brightness down to 80% after a while indoors when the ambient light isn't daylight.
 
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now i see it said:
since they're into automatically turning everything on that youve specifically turned off (Bluetooth, Wifi-) I wouldn't put it past them to automatically turn the brightness down to 80% after a while indoors when the ambient light isn't daylight.
Click to expand...
I guess that makes the most sense. I will try turning off True Tone display for a while and see if it turns the brightness back down.
 
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