I turned on “show refresh rate” in developer options and noticed different behaviours at different brightness levels:
0 - 55% : the refresh rate is a constant at 120hz except in videos where it goes down to just 60 hz even for 30fps videos
55 - 85% : the LTPO panel is working as expected and refresh rates can go down to 10hz and goes to 30hz for 30fps videos
85-100% : the lower limit is now 1hz
Is this by design or is something wrong with my unit?
If it is how its designed, why is it like that?
My phone has refresh rate set to the “high” option