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Muffled phone speaker? Common causes and fixes

Quiet, crackly or muffled sound is often caused by dust in the grille, but it can also be liquid damage or a failing speaker. Here is how to narrow it down.

1 min readBy the Wepairs team

A technician carefully blowing dust out of a smartphone

Phone speakers sit behind tiny mesh grilles that are very good at collecting pocket lint, dust and debris. Over months, that build-up can make calls and music sound muffled or distant.

Rule out the easy things

  • Check the phone is not still connected to Bluetooth headphones or a car
  • Turn the volume up and check the ringer and media volume separately
  • Remove the case in case it covers the speaker
  • Restart the phone

Clean the grille safely

Use a dry, soft-bristled brush, such as a clean toothbrush, to gently brush across the grille. Do not push pins, needles or cotton buds into the openings, because they can puncture the speaker membrane and make things worse.

Earpiece or loudspeaker?

Test both. Play music on the loudspeaker, then make a call with the phone to your ear. If only one sounds wrong, that component is the problem. If both are affected, suspect liquid damage or a software issue.

When it needs repair

Crackling, buzzing or sound that cuts out usually means the speaker itself is damaged. Speaker replacements are quick, and we test sound quality on calls and media before handing the phone back.

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