A:Answer I never noticed any ambient light reaction. Of course, I immediately set up specific screen brightness defaults for all my Routines. It stays at whatever level I set it, with the exception of 0% (screen off); with that setting, when you interact again it will return to whatever non-zero brightness percentage you had set previously. There are only about three or four total levels besides the screen-off level, in reality, e.g. 1 through 15 percent is the same thing.