Xiaomi
Clear Speaker Sound Cleaner auf Xiaomi
Dust, lint, and pocket debris can settle inside the speaker grille over time, muffling sound or dropping volume noticeably. Xiaomi phones running MIUI include a dedicated cleaning tool that plays a low-frequency tone designed to vibrate trapped particles out of the speaker mesh.
The feature sits inside the additional settings menu, separate from the regular volume controls, because it triggers a specific speaker resonance rather than normal audio playback.
To run it, open Settings ➤ Additional settings ➤ Clear speaker ➤ Turn On Clear speaker ➤ Got it.
The tool plays roughly 30 seconds of sound. Gently shaking the phone during playback helps loosen debris that vibration alone might not clear.
This fix works best for muffled or quiet audio caused by physical blockage. If the speaker crackles, distorts, cuts out intermittently, or stays silent, the cause is more likely hardware damage or a software conflict, and the cleaning tone will not help.
Side effects are minimal. The tone plays at a moderate volume and stops on its own. Repeating it a few times over a couple of days is safe if muffling persists, but if sound quality does not improve after two or three attempts, a physical inspection or service visit is the next step.