Adaptive brightness does not learn preferences, remains consistently too dim (Fairphone 5, /e/OS 3.0.1)

The adaptive brightness feature on /e/OS 3.0.1 appears not to learn from manual adjustments as expected. According to standard Android behavior, adaptive brightness should adapt to user preferences over time – for example, remembering that the user prefers slightly higher brightness in dim environments.

In my case, however, the system always sets the brightness too low, especially in darker conditions. Even after repeatedly increasing it manually in those situations, it doesn’t seem to adjust its baseline or “learn” from my behavior.

Expected behavior: Adaptive brightness should gradually learn and remember user preferences. For example:

In low light: should remember that I prefer 40% brightness instead of 10%

In bright light: should raise brightness accordingly, without manual adjustment

Actual behavior: The brightness remains consistently too low across all conditions, even after multiple manual corrections. The system does not seem to adapt or change its behavior over time.

Steps to reproduce: Enable Adaptive brightness

Go into a dark room – screen dims too much (e.g., to 5–10%)

Manually raise brightness (e.g., to 40%)

Repeat multiple times in similar lighting conditions

Observe that the system continues to default to the same low brightness level every time

Reproducibility: Always – the behavior is consistent

Device information: Device: Fairphone 5

/e/OS Version: 3.0.1

Android base: Android 13?

Additional notes: This may point to either a missing learning mechanism or a bug in the brightness algorithm