Updated 31 October 2026
Before you spend money on a repair, spend one minute here. These checks tell you whether your speaker is fine, a bit dirty, still wet, or genuinely damaged. They're also the best way to see if a cleaning actually worked.
What each test should sound like
| Test | A healthy speaker sounds like | If it sounds wrong |
|---|---|---|
| Left / Right | The tone comes from one end only, and both sides are equally loud | One side quiet: water or dust in that speaker. Try Water Eject |
| Both | A steady 440 Hz note, no buzz | Buzzing or rattling: something on the grille |
| Bass 60 Hz | A soft, low hum (phones are naturally weak at bass) | A loud rattle: water or a loose part |
| Voice 1 kHz | Clear and fairly loud | Dull or quiet: probably dust. Try Dust Cleaner |
| Treble 8 kHz | A thin, high whistle | Missing: a blocked grille or a damaged speaker |
| Full sweep | A smooth glide from very low to very high | A crackle at one point: water sitting on the mesh |
Testing left and right on a phone
On phones with stereo speakers, the left channel comes out of one end and the right out of the other. Turn the phone sideways before you play Left and Right. If both seem to come from the same spot, your phone just has a single speaker. That's common on budget models and nothing to worry about.
Test before and after cleaning
Here's a habit worth getting into: play the Voice test and the Full sweep before you clean, then again after. If you hear a clear improvement, the cleaning worked. If nothing changes and it still sounds distorted, it's more likely hardware, such as a torn speaker cone or a loose connector, and a repair shop is your next stop.
Laptops and Bluetooth speakers
The test runs in any browser. On a laptop, Left and Right show you whether both built-in speakers are working. If you're testing Bluetooth speakers or earbuds, make sure your phone or computer is actually sending sound to them before you start.
What a healthy phone speaker sounds like
It helps to know what "normal" is before you decide something's wrong. Phone speakers are tiny, so they can't play deep bass loudly. A soft, quiet hum on the 60 Hz test is completely normal. Voices at 1 kHz should be the loudest and clearest part. The treble whistle at 8 kHz should be thin but clean. The full sweep should rise smoothly, getting louder through the middle and fading at both ends.
What isn't normal: crackling, buzzing, a sound like paper rattling, or the sound cutting in and out. Those point to something on the grille, water on the mesh, or damage.
Record it for a second opinion
If you're thinking about a repair, record a short video of the speaker test playing on the faulty phone, using another phone. A repair shop can hear the problem before you even visit, and you'll have a "before" recording to compare with after cleaning. Hold the recording phone about 20 cm away so it doesn't pick up its own echo.
Which test to run for which problem
- Muffled after water: Full sweep, listen for a crackle at one point.
- Gradually quieter: Voice and Treble, compared with another phone if you have one.
- One side quiet: Left and Right, with the phone held sideways.
- Calls hard to hear: Left and Right to find out whether your earpiece is a speaker, then the ear speaker cleaner.
Questions people ask
How can I tell if my phone speaker is damaged?
Play the Voice and Full sweep tests. If there's constant crackling, buzzing or missing sound even after cleaning, it's more likely damage than dirt.
Why is Left or Right silent on my phone?
Your phone probably has a single speaker, or one speaker is blocked. Turn the phone sideways and try again.
Why does the bass test sound so weak?
Small phone speakers just can't play deep bass loudly. A soft hum at 60 Hz is exactly what you should hear.
Can I test my speaker without installing an app?
Yes. Everything runs in your browser on iPhone, Android and laptops.
More speaker tools
Or go back to the main fix my speaker tool.