Stop. If three cycles produce no improvement at all, the cause is not blockage. Check the symptoms on our guide to when a sound tool will not help, and have the device inspected rather than continuing to run cycles.
Tap the button below. It plays a low‑frequency sound that vibrates the speaker and pushes trapped water and dust out of the grille. Turn your volume up to about 80%.
💡 Point the speaker downward so gravity helps the water escape. Repeat 2–3 times if needed.
This tool is optimized for Vivo Y21 devices. Select your exact model for the best results.
Dry the outside of your phone first.
Let gravity help pull the water out.
Ensure audio plays through the phone's internal speakers.
Never use earbuds. Turn volume up, but 100% isn't required.
Our tool is designed to target the three most common speaker issues using precise acoustic frequencies. Whether your phone took a dive or just sounds muffled from pocket lint, here is how we fix it.
Clear trapped water from your phone in about 60 seconds. The steady 165 Hz vibration physically pushes trapped liquid out of the speaker mesh.
A steady 165 Hz tone — the sweet spot for maximum diaphragm travel — physically pushes trapped water out.
Use our deep clean mode to act as a dust remover. Sweeping low frequencies shake loose stubborn dirt, sand, and lint.
Sweeps across low frequencies (120–400 Hz) to shake loose lint, dust and stubborn droplets the single tone misses.
Act as a volume booster for muffled speakers. Clear out blockages to restore heavy sound, loud bass, and crisp audio.
A clean 440 Hz reference tone so you can hear whether your speaker sounds clear again after cleaning.
Perfectly safe. These are ordinary frequencies your speaker already plays during music. The tool never exceeds normal listening levels — it just concentrates the energy at the frequency that moves water best.
The Y21 follows the Y-series pattern, and knowing that pattern sets realistic expectations about what cleaning will and will not recover.
For a complete overview, see our full guide: Fixing an Android phone speaker.
A single bottom-firing loudspeaker, with the earpiece handling calls only. There is no stereo pair, so the absence of a second channel is the design rather than a failure. Media volume comes entirely from one small driver.
Cover each grille beside the charging port in turn while audio plays. Only one is a speaker; the other is a microphone. Ten seconds of testing prevents a lot of wasted effort.
*#558# for the Funtouch hardware test where available.If the speaker is blocked by liquid or loose pocket lint, cycles will restore it to factory output. What they will not do is make a budget single-driver phone loud — the hardware ceiling is modest by design, and a fully cleared Y21 producing moderate volume is a Y21 working correctly.
This distinction matters: if audio is clean but quiet, you are at the hardware limit. If it is muffled and dull as well as quiet, something is restricting it and cleaning will help.
No certified IP rating. Treat the speaker cavity as open to the board. Power off immediately after any liquid contact, eject the SIM tray to check the indicator, and do not charge for 24 to 48 hours.
Case off, brush the grille, volume 70–80 percent, grille facing down at about 45 degrees, three cycles with brushing between each. Verify with a recorded reference clip rather than by memory.
Stop. If three cycles produce no improvement at all, the cause is not blockage. Check the symptoms on our guide to when a sound tool will not help, and have the device inspected rather than continuing to run cycles.
No. The frequencies used sit inside the range your speaker already reproduces whenever you play music, and the tool runs at moderate volume rather than maximum. The one genuine caution is earbuds: never run ejection tones into in-ear devices while you are wearing them.
No. Around 70 to 80 percent is the practical sweet spot. Maximum volume on a restricted diaphragm produces distortion rather than more displacement, and adds avoidable stress to the driver.
No — and this matters. The sound has to travel through the blocked speaker to do anything, so any connected Bluetooth or wired device defeats the purpose entirely. Disconnect everything first.
Eject the liquid the same way, but treat the device as needing professional attention afterwards. Salt and sugar leave conductive, corrosive residue when they dry, and that residue keeps damaging the board long after the speaker sounds normal.
Our tool is great for water and dust, but it cannot fix physically blown speakers or electrical damage.
Learn when it won't workStep-by-step help for wet, muffled, crackling or quiet phone speakers.