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What's the best way to test a phone's "waterproofing" claims? Toss it in the pool and see if it survives.

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It starts with three phones: the Samsung Galaxy S7, S7 Active and S7 Edge, all rated to withstand up to 30 minutes in 5 feet of water (1.5 meters).

Caption by / Photo by James Martin/CNET

We measured the depth with a tape measure, and set up rocks to keep the phones from sliding.

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I charged the three phones and went through the setup process, but otherwise, they're fresh from the box.

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The handoff: Getting the phones into the pool without wetting them first.

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Diving down to place the phones.

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A GoPro recorded the phones underwater.

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28 minutes later, I pulled them out.

Caption by / Photo by James Martin/CNET

I noticed right away that the Always On display was visible on all three phones, which means they were all powered on.

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Inspection time.

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The Always On display is hard to see...

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...but it's there.

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Everyone wanted to take a look.

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I rebooted the phones, took photos and used them like you would any phone.

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No water leaked into the camera.

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There's no telltale cloudiness inside the lens, either.

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Same goes for the front-facing camera.

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Water in the ports doesn't mean it's in the phone. They're nanocoated to protect the electronic innards.

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All three S7 models passed the dunk test! Check out our full test results and video here.

Caption by / Photo by James Martin/CNET
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