Total silence is almost always a routing or profile problem: the sound is going somewhere else, or a mode is muting it. Hardware failure of all audio at once is rare.
- 1Raise Media volume specifically (volume button → expand sliders).
- 2Turn off Do Not Disturb, and check its schedule isn't re-enabling itself.
- 3Bluetooth off: a paired speaker in another room may be receiving your audio.
- 4Restart; test with different apps (one silent app = that app's own mute).
- 5Safe Mode test: sound back = an installed app (volume managers, equalizers) is muting.
- 6Verify hardware with the Speaker Test; verify mic separately if calls are the issue.
Tip: Sound only missing in one app? Check that app's internal volume and notification settings before anything else.