You can set WHEN TO SHOW:
Always-on ambient display.
This feature may cause additional battery drain, but only a minimal
percentage. This feature will be disabled in battery saving mode or
when the battery level is lower than 5%.
You can set WHAT TO SHOW:
Display & brightness
There are two modes here, including Light and Dark mode.
You can choose the Auto switch, and the Dark mode will replace Light
mode at sunset.
Go to Settings > Display & brightness > Dark > Dark mode
settings.
There are three different styles, including enhanced, medium,
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