Quiet Hours are schedule-based. Set a start and end time for calmer overnight behavior.
Display, LED, and sound are separate controls. Screen brightness, light-ring level, and volume can be adjusted independently.
Use the device or app. The same practical settings are available from the on-device settings flow and the app.
If a sound still surprises you. The monthly self-clean cycle (first Tuesday of the month, around 10 AM) is separate from Quiet Hours behavior and is normally brief.
