When you trade in an iPhone 6, (which I suspect many will be doing next week) There's a 3 point test you have to pass go check to see if your LCD display has been cracked, and one other. But the one I wanted to focus on is the water test. Everyone knows that there is a little water indicator inside the iPhone. That's what I wanted to know more about. What are they actually testing for? Are they testing to see if the iPhone was ever completely submerged in water? Or will the indicator go off if it was raining, and if you had your phone in the shower with you?