Son of a @**$&#^

I dropped my S7 on Easter Saturday from 2 feet and it hit the corner just right to crack the screen. My bad luck as it was its first time out of its OtterBox in 2 years as it would not fit in my breast pocket of my nice shirt with its case on that day.
Got a food dehydrator? Bag of rice may work over a week or so but if you find a phone repairman, ask him for a jar of desiccant. Its silica that will dry your hands of you pour it on them. If he gives one up, buy him lunch. Pour it in a bag and drop phone in. your issue may be that the battery has already shorted and opened itself for protection. Everything else is waterproof as the circuit boards go through a bath during manufacturing (speaker/mic and vibrator unknown)