Apple Watch Water Lock — and how to replicate it on iPhone
When you end a swim workout on Apple Watch, the watch plays a series of tones through its speaker that physically eject water from the speaker opening. This is not magic — it's physics: specific frequencies vibrate the speaker membrane in a way that overcomes the surface tension holding water in the grille.
Water Remover uses the same principle, optimized for the iPhone speaker profile. If you've ever used Apple Watch Water Lock, you'll recognize the effect immediately.
Clearing water from AirPods
AirPods Pro (water resistant to IPX4) and AirPods 4 can trap water in the speaker mesh after exposure to sweat or rain. Place the AirPods mesh-side down near the iPhone speaker and play the water eject tones — the vibrations can transfer through air and surface to help dislodge water from nearby devices.
For best results with AirPods, place them driver-side down on a hard surface near the phone's speaker while running the eject sequence. This method is less reliable than direct speaker application but works for light moisture exposure.
After a swim or workout
If you swim or work out with your iPhone (iPhone 12 and later are rated for swimming in the pool), running a water eject sequence after each swim keeps the speaker consistently clear rather than letting water accumulate across multiple sessions.
For Apple Watch wearers, pair the Water Lock end-of-swim eject on the watch with the Water Remover eject on the iPhone for complete audio clearing after pool sessions.
Other water-resistant Apple devices
The same audio frequency ejection principle works on any device with a speaker that can trap water. The Apple TV Siri remote (IPX4 rated), Magic Keyboard with Touch ID, and other Apple audio devices can all benefit from the technique.
Hold the device speaker or audio opening near the iPhone speaker while running the eject sequence, and gravity plus vibration will help clear most trapped moisture.
Clear Any Speaker with One Tap
Download Water Remover free on iOS — Apple Watch-style water eject for your iPhone, AirPods, and more.
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