Symptoms
- Popping or crackling sound during calls or media
- Distortion gets worse at higher volume
- Sound is fine through headphones but not the speaker
- Crackling happens on one speaker channel only
Likely causes
- CommonDust or debris in the speaker grilleParticles vibrating against the speaker cause a crackling or buzzing sound.
- CommonVolume set too high causing distortionSpeakers can distort audio that's boosted beyond their clean output range.
- PossibleLiquid residue affecting the speakerEven dried liquid residue can interfere with the speaker diaphragm's movement.
- PossibleThird-party volume boosting app or equalizer settingSoftware that amplifies bass or volume beyond normal levels can distort output.
- Less commonPhysically damaged speaker coneA torn or dented speaker cone will crackle at most or all volumes.
What to do
- Lower the volume to about half and see if the crackling reduces or disappears.
- Inspect the speaker grille for dust or lint and clean gently with a soft, dry brush.
- Play the same audio through headphones to confirm whether the issue is the speaker itself or the audio source.
- Turn off any bass boost, equalizer, or volume-enhancing app and retest.
- Restart the phone to rule out a temporary software glitch.
- Test with different apps and sound types (music, call, alarm) to see if it's limited to one source.
- If the phone was ever exposed to liquid, let it fully air dry before further testing.
- If crackling persists at all volumes and sources, the speaker hardware likely needs replacement.
Tools and parts
- Soft-bristled brush
- Headphones for testing
Replacement phone speakerSearch: “phone loudspeaker replacement”
When to call a pro
If crackling continues across all apps, volumes, and after cleaning, have a technician inspect or replace the speaker.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.