I was at a public pool the other day, 1st day i got my S5 and was about to give it a shot. Saw a guy walking around in the pool with his S5 and dunking it, but he had a case on it. I approached him and asked if the phone is truly waterproof and should i be worried ... he said this is his second one, the 1st one he took to the pool and the screen began to not respond to touch. So he said they insured him (i didnt ask details about how/who) and he got a new one, and now has a waterproof case on it. How has everyones experience been with water?