Hi Nickname,
Do you mean the adaptive brightness not working?
Could you tell us more about how it doesn't work?
Could you show us a short video of the problem? This could help us look into the problem greatly.
To share videos, please upload it to ASUS WebStorage (https://www.asuswebstorage.com/navigate/) and share the link with us.
How is the ambient brightness when the problem appears?
Please provide your firmware version: Settings > System > About Phone > Software information
Thank you 🙂
