samsung a20 adaptive brightness not working

[jayjayang]

After updating my samsung a20 to android 10 adaptive brightness wont work i do factory reset clear cache and safe mode but nothing work.

[Charlon]

it's to contact the tech support if you already did a reset

[klenlue]

did you try to switch on and pff the adaptive brightness?

[jayjayang]

yes but when i started to on adaptive brightness i cant adjust the sliding icon if itry to adjust the sliding icon to lowest its turning again to middle point. but if I off the adaptive brightness its turning to normal i i can adjust were i want to adjust