How many liquid sensors are there on the iPhone that turn red to show if the phone got wet? I know about the one in the headphone jack, but I think I found another one. I spilled a cup of water on my phone last night on the bottom side of the phone. Today when I was in the sun, I noticed a red spot in the dock connector. Sorry about the pic, I think the iPhone has a better camera than my digital camera. Can anyone confirm this, or is the only visible sensor in headphone jack?