So I went golfing the other day and it had been raining and was very humid outside and of course my battery cover came off when I pulled the phone out of my pocket. I grabbed it and put it back on and never thought about it again, the next day however when I was playing with my phone and took the cover off I noticed the water mark had been tripped. No water got on the phone so the humidity must of tripped. Just thought I'd let you guys know because apparently these water marks are super sensitive.