Phone speaker test - check left and right output
Play test tones through each speaker and listen for silence, crackle or distortion.
Phone speaker test
Plays the channel that goes to the bottom speaker when the phone is held the way you picked above. On a phone with only one loudspeaker, everything plays from the bottom — that is normal.
A web page cannot switch audio to the call earpiece — browsers always play through the loudspeaker. On phones with stereo speakers, the earpiece doubles as the second speaker, so this plays the channel mapped to it.
Silent at the top? If your phone has a single speaker, that is expected. If it has stereo speakers, clean the earpiece mesh gently and check that a case is not covering it.
Hold the phone sideways for this test. The sound should jump to the end of the phone on the side it names.
Phone speakers are tiny: 150 Hz will be quiet on most phones, and deep bass is missing entirely. A rattle or buzz on the low tone at normal volume is the sign of a damaged or dirty speaker.
The tone rises in pitch and loudness over 12 seconds. The page cannot hear your speaker, so only you can judge distortion: a clean tone that just gets louder is healthy; a buzz, rattle or crackle is not.
This cannot go above your phone’s own media volume — use the volume buttons too. Silent mode can mute web audio on iPhone.
Pick a test and press Play.
Try the Speaker Cleaner & Water Eject tool, then run this test again to compare. It may help move trapped water; it cannot repair a damaged speaker.
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What this test can honestly tell you
It plays a gentle tone panned to one channel at a time and asks what you heard. It does not claim to have verified which physical speaker produced the sound, and here is why that distinction is not pedantry:
Browsers hand audio to the operating system, and what happens next varies. Many phones mix both channels into a single speaker. A device with one speaker plays everything through it. Bluetooth headsets re-route the lot. So a phone with a completely dead right speaker can pass a naive "did any sound play" check perfectly — and plenty of online speaker tests report exactly that.
Only you can say which side you heard it from, so that is what gets recorded, and the report labels it as your confirmation rather than as a measurement.
Before you decide a speaker is broken
- Check the volume and the silent switch.
- Take the case off — a case that covers the speaker grille muffles it enough to sound like a fault.
- Look at the grille. Pocket lint packed into it is the single most common cause of a quiet phone speaker, and it is fixable with a soft brush.
- Disconnect Bluetooth. A phone quietly connected to a speaker in another room sounds broken.
Crackling and distortion
A speaker that plays but rattles or buzzes at volume usually has a damaged diaphragm, often from water. That is a real fault and worth recording.
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Quick answer
Play the tone and answer what you heard. Before deciding a speaker is broken, check the volume, remove the case, clear lint from the grille and disconnect Bluetooth - those explain most quiet speakers.
Key facts
- Browsers cannot verify speaker channel routing - many phones downmix to mono
- Pocket lint in the grille is the most common cause of quiet output
- Crackling at volume usually means a damaged diaphragm
- Your answer is recorded as a confirmation, not a measurement