I dropped my phone into a clean toilet. It was in an apple leather case which I think may have helped out. I immediately fished it out, turned it off, took it out of the case, and tried to dry it off as well as I could. I then did the rice thing (not really sure if this is useful). Well anyway....i turned it on and all appears well. Home button/touch id, sleep button, vol buttons, mute button, touch screen, all seem to work. My question is, come time to turn it in to ATT (after 18 months), what do I need to do with it. How do they check for water damage etc? I briefly looked online but hadn't see anything on what to do with damaged phones.