My husband went to put his 6s on the bedside table last night while half asleep & accidentally dropped it into his water glass. It was only in the water for 3-5 seconds & we immediately removed the case & dried it off & it seemed fine. This morning it started acting crazy/stopped working. He went to Apple store, they opened it up & saw the water damage sensor had been triggered & said his only option was $299 replacement. He got the new phone but I'm just wondering, I thought the 6s phones had an additional rubber seal inside that made the phones almost waterproof. I've seen multiple videos on YouTube where the 6s phones are left in a sink full of water for hours with the timer running to no ill effect. Is this just extremely bad luck that a few seconds in a water glass could ruin an iPhone 6s?