I have read a couple of things on this site about possible water damage, or maybe installing a new os. Well, the water damage indicators on my phone are not red, but there is a little sticker on the bottom of my battery that has red x's on it (possible water damage indicator)?
If you have a white sticker or a sticker with red X's on it, you are fine. The plain white sticker turns red when it gets wet. The white stick with the X's will turn a soild red/pink when it gets wet, the red x's bleed into the white making it all red/pink.
I dunked a dead battery with red x's on it, under running water in the bathroom one day to see what if anything would happen to the sicker on it. It turned reddish pink. Like taking a magic marker and touching it to a piece of tissue, the darker color wicks into the lighter color. When it dried it looked darker than it did while wet.