One of the big re-additions to the Galaxy S7 and Galaxy S7 Edge is its IP68 rating. In plain English, that means your device can be submerged up to 1.5 meters for up to 30 minutes. Wanting to flaunt that feature, T-Mobile did a underwater unboxing for the upcoming Galaxy S7.
While this is a fun video and all and the device is technically capable of being submerged, it’s not a practice I would recommend on a regular basis. Technology and liquid just aren’t the best of friends. Sure they can come together every now and then without causing a fritz but the more you keep them apart, the better.