Updated 31 October 2026
Dust is sneaky. Unlike water, it doesn't announce itself. Your phone lives in a pocket or a bag, a little lint gets in every day, and one evening you realise videos sound thin and you're turning the volume up more than you used to. Nothing broke. The holes just slowly filled up.
How to clean dust from your speaker
- Take the case off. Lint loves to collect right where the case meets the speaker holes.
- Turn the volume all the way up and point the speaker down.
- Tap Clean Dust and let the three rounds play. In each pause, tap the phone gently against your palm.
- Finish by hand if you can still see grey fluff (see below).
- Compare the sound with the speaker test. The Voice and Treble checks show dust problems most clearly.
Why a sweep instead of one tone?
Dry dust doesn't behave like water. Every speck sits in a hole of a slightly different size and reacts best to a slightly different vibration. A single steady tone would only shake some of them. So this mode glides from 300 up to 2,000 Hz and back down every six seconds, giving every particle its moment.
These higher notes barely move the speaker cone, which makes this mode very gentle. It's safe to use as a monthly clean-up, especially if your phone spends its life in a pocket.
Cleaning the grille by hand (safely)
Sound loosens dust, but sometimes it needs a little help to actually leave. These are the methods we'd trust on our own phones:
- A soft, dry brush. A clean soft toothbrush or makeup brush, brushed across the holes, not jabbed into them.
- The tape trick. Press painter's tape or a blob of sticky putty onto the grille and lift it off. Use a fresh piece each time until nothing comes away. Honestly, this one is the most satisfying.
- A microfibre cloth for the area around the grille.
Please don't use pins, needles or toothpicks. One slip and you can puncture the mesh, and a torn mesh lets in far more dust from then on. Compressed air at close range pushes dirt deeper, and liquids or alcohol should never go into the holes.
How to tell it's dust and not something else
- The sound got quieter gradually, over weeks or months, with no water involved.
- Voices on speakerphone sound flat, like the person is far away.
- Hold the phone under a bright light and you can see grey lint in the holes.
- On a stereo phone, one end sounds noticeably quieter than the other.
If it suddenly went quiet overnight, dust probably isn't the cause. Check whether Bluetooth is connected to something, or have a look at our low volume fixes.
Why pockets are the worst place for a speaker
Jeans and trouser pockets are full of tiny cotton fibres. Every time you slide the phone in and out, a few of them catch on the speaker grille, and body heat plus a bit of moisture helps them stick. Over a year that adds up to a felt-like layer you can actually see. Bags are better, but crumbs, sand and makeup powder find their way in there too.
A case with a small lip around the bottom edge helps a lot. So does putting the phone in your pocket speaker-end up, so the grille isn't the part that drags along the fabric.
A simple monthly routine
- Take the case off and shake it out. Lint collects inside cases too.
- Run Clean Dust for three rounds.
- Do the tape trick on the bottom grille and the earpiece slot at the top.
- Wipe the whole phone with a dry microfibre cloth.
- Play the Voice test on the speaker test page and compare it with how you remember it.
It takes about three minutes. Doing it once a month keeps the buildup from ever getting thick enough to notice.
What if dust and water got in together?
Dust plus water turns into mud in the mesh, which is common after a dusty ride in light rain. Always deal with the water first, using Water Eject. Wait until the phone is properly dry, at least an hour. Then run Clean Dust and brush the grille. Brushing while it's still wet just smears the mud deeper into the holes.
Questions people ask
How often should I use the dust cleaning sound?
Once a month is plenty for most people. If you work somewhere dusty or keep your phone in a pocket without a case, run it more often.
Is the dust cleaning sound different from water eject?
Yes. Water Eject uses a strong, low 165 Hz tone to push water. Dust Clean sweeps between 300 and 2,000 Hz to reach particles of different sizes, and it's gentler.
Can it clean dust out of the charging port?
No. Sound moves the speaker, not the port. For the port, switch the phone off and very gently use a soft brush or a wooden toothpick.
It's still quiet after cleaning. Now what?
Check your volume limits and Bluetooth first. Our low volume guide walks through the settings that most often cause it.
More speaker tools
Or go back to the main fix my speaker tool.