That whole screen is a confusing, horrible mess of a UI, in my opinion.
DND is dim. Does that mean it's OFF (one might get reminders) or ON?
DND is bright. Does that mean it's OFF or ON?
DND is bright with a minus sign in a circle. Does that mean it's OFF or ON?
Ditto Sleep and Screen Awake.
Whatever happened to simply putting the words "ON" and "OFF", or even check marks to indicate ON, after these words/phrases followed by a colon?
E.g.
DND: OFF
Sleep: OFF
Screen Awake: ON
Is that so hard to do? (Note that the colons are needed so people don't think "DND ON" means "press here to turn DND ON" versus "DND is currently ON". That sort of confusion can be a real challenge when it comes to designing an intuitive UI.)
And if "Sleep: ON" disables DND and/or Screen Awake, just have those show up as "DND: N/A" and "Screen Awake: N/A", and I think most people would get the message without having to trawl through forums like this, make inferences based on the level of light of a portion of the display, etc.
Further, the online info I found says "When you turn off the setting, the icon appears dim with a line through it." Um, no; I see no line through any of these icons, even when dim. (It looks like there's an extremely dim such icon with a line through it; but that's not really legible even in a somewhat-dark inside room, nevermind when trying to figure out this stuff while outside in sunlight. So those icons seem like they're just background images. In general, devices like FitBits, designed to be actively used and viewed in a wide variety of lighting conditions, should never use dimming/brightening as a substitute for displaying actual useful information.)
It's especially weird that even the documentation doesn't simply include a table showing what each icon might look like, along with a simple explanation of what that means, per row.
But the fact that one is even needed is a strong indicator of a poor UI.
