Hundreds of thousands of viewers are singing its praises in the comments, swearing that the two-minute video fixed their phones after spills, drops and other liquid mishaps.
The lowest tone that that speaker can reproduce, at the loudest level that it can play, will create the most air motion, which will push on the water that's trapped inside the phone.
It's just a specific oscillating tone that pushes the water out of the speaker grilles; not sure how effective the third-party versions are for phones since they're probably not ideally tuned.
But, in theory, the sounds from the YouTube video should act like the water expulsion feature of the Apple Watch.
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