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After a splash, your iPhone speaker may sound muffled or crackly. You'll find apps, shortcuts and YouTube videos that play a low "water eject" tone to push water out. Do they work? Partly. Here's the science, the evidence, how to try it safely, and what it can't fix.
Key takeaways
- A low-frequency tone makes the speaker vibrate strongly, which can push droplets out of the speaker grille.
- Apple uses the same principle in Apple Watch Water Lock, but iPhone has no built-in water-eject feature.
- It can help with water in the speaker grille, but it won't dry the inside of the phone.
- Use moderate volume and short bursts, and combine it with air drying.
The idea
A speaker works by moving a thin membrane back and forth to push air. Low-frequency tones make it move further with each cycle. When water sits in the speaker grille or the small cavity behind it, those strong vibrations can push droplets out through the openings, a bit like shaking water off your hands.
Evidence
Apple uses the same principle in Apple Watch Water Lock. When you turn off Water Lock after a swim, the watch plays a series of tones to clear water from the speaker. It helps with the speaker grille but won't dry the inside of the phone. iPhones don't have an official equivalent, so on an iPhone you need an app, a shortcut or a tone video.
What tones can't do: - Remove water from the charging port, which is what triggers the liquid-detection alert. - Dry internal components if water got past the seals. - Fix a speaker that's damaged or blocked by debris.
How to try it
Use a speaker-cleaner app such as Speaker Cleaner: Eject Water or a tone video, at moderate volume for short bursts.
- Wipe the outside of the phone with a soft, lint-free cloth.
- Hold the iPhone with the bottom speaker facing down, so gravity helps.
- Play the low tone at moderate volume, around half to two-thirds, for 10 to 30 seconds.
- Pause, wipe away any droplets, and repeat a few times if needed.
- Then leave the phone speaker side down on a lint-free cloth in a dry spot with some airflow, as Apple suggests.
- Don't charge with a cable until the phone is completely dry. Apple recommends waiting at least 5 hours after liquid exposure.
Don't forget the earpiece speaker at the top of the screen, which can also hold water. Some apps let you choose which speaker plays the tone.
Methods compared
| Method | Helps with | Limitations |
|---|---|---|
| Low-frequency tone (app, shortcut or video) | Droplets in the speaker grille | Can't dry the port or internals |
| Air drying, speaker side down | All surfaces, gradually | Takes hours |
| Fan blowing cool air into the port | Faster drying of the charging port | Apple suggests cool air only |
| Rice | Nothing extra | Apple says not to; particles can get in |
| Hair dryer or other heat | Not recommended | Apple says don't use external heat |
| Cotton swabs in the port | Not recommended | Apple says don't insert foreign objects |
Apps vs. Shortcuts vs. videos
- Apps offer adjustable tones and guided steps, but some show ads or offer subscriptions. Check the price before starting a trial.
- Shortcuts: community-made "water eject" shortcuts play a tone through the Shortcuts app. Only install shortcuts from sources you trust, since they can run actions on your phone.
- Videos: free and easy, but the tone may be compressed and ads may interrupt.
Is it safe for my speaker?
At moderate volume and in short bursts, a low tone is no harder on the speaker than loud music. Playing loud bass tones for a long time can stress any small speaker, so keep sessions short. If you hear rattling or distortion that doesn't improve after the phone dries, stop and get it checked.
When it won't help
If the speaker is still muffled a day later, the problem may be debris, damage, or water inside the phone. See iPhone speaker still muffled after water? for next steps, and does AppleCare+ cover water damage? for repair costs.
Preventing the problem next time
Water resistance helps, but it wears down over time and after drops. Avoid swimming or showering with your iPhone, which Apple advises against, and use a waterproof pouch at the pool or beach. See is my iPhone waterproof?
Signs water has reached more than the speaker
A tone can only help with the speaker grille. Get the phone checked if you notice fogging inside a camera lens, flickering or lines on the screen, Face ID errors, random restarts, or a liquid-detection alert that won't clear after 24 hours of drying. Those symptoms suggest moisture inside the phone, which no app can remove. Back up your data while the phone still works, then contact Apple Support or an authorized service provider.
Frequently asked questions
Do water eject sounds really work?
They can help push droplets out of the speaker grille, using the same principle as Apple Watch Water Lock. They don't dry the inside of the phone or the charging port.
Does iPhone have a built-in water eject feature?
No. Apple Watch has Water Lock with a built-in tone, but iPhone doesn't. On iPhone you need an app, a shortcut or a tone video.
How long should I play a water eject tone?
Short bursts of about 10 to 30 seconds at moderate volume, repeated a few times, are usually enough. Then let the phone air dry.
Can a water eject sound damage my speaker?
At moderate volume and in short bursts it's unlikely. Avoid playing loud bass tones for long periods, and stop if you hear persistent distortion.
Sources
Official sources this article relies on, checked October 15, 2026. Rules and prices change, so confirm details at the source.