A few notes on Night Light

[mirh]

Before finding your majestic app, I did my own research about the feature. And it seemed a pity not to have it all documented now. Note this is all untested by me, but still multiple people seemed confident about them. ALLEGEDLY:

• Nougat may also require tuner_night_mode_adjust_tint (it should be uninfluential when turning off though)
• OnePlus phones (and Realme?) might require night_display_auto_mode
• Samsung phones should have blue_light_filter (potentially overlapping)
• Xiaomi phones could (not sure if concurrently or alternatively) have screen_paper_mode_enabled
• Huawei phones might use eyes_protection_mode? (idk, the phoneprofileplus dev seems to think so at least)

EDIT: of note that some of these settings may sit in the system (or global?) registry store instead of secure

[henrichg]

Tested in my test devices:

Pixel - required is WRITE_SECURE_SETTINGS permission, because of Settings.Secure db, working
Samsung - not working :-(
Xiaomi - working, required is Shizuku, root
Huawei - working, Shizuku, root, WRITE_SECURE_SETTINGS is not needed
OnePlus - required is WRITE_SECURE_SETTINGS permission, because of Settings.Secure db, working

EDIT: For Samsung it is not working. Switch in Settings is set by value assigned to "blue_light_filter", but filter is not set on/off. Problem with "night_display_activated" persists. Value "1" switch off display. :-( Tested in S10, S21.

[henrichg]

Fixed also for Samsung.
Needed is start of service:
henrichg/PhoneProfilesPlus#81 (comment)