Be sure not to use your iPhone anywhere that there is moisture. I know most of Earth has moisture but if 1 of your 4 moisture sensors changes color your warranty is voided. It is voided because you submerged your phone. When did you submerge your phone? You don't remember ever getting your phone wet. Thats OK Apple will tell you that you have submerged your phone and you have to buy a new one. Even if you have not, you are the liar because they have the sensor. Does not matter that 1 of the sensors is in the lowest point of the phone and may have gotten damp. You are still a liar because a genius told you so.