How long should I leave my Iphone in rice? - 1

I was in a rush and completely forgot my Iphone 4S was in my back pocket. Next thing you know, I hear a splash in the toilet. It took me a second to realize what had happened and I immediately pulled my phone out. I dried it with a towel and pressed the lock key to see if it was alright. There were no glitches, the home button stopped working but its fine now. The only issue is that it won't turn off, I've tried turning it off, but it magically turns back on itself. As far as I know, all the buttons are working, nothing happened to the screen and the water damage indicators aren't pink at all. Just to be safe I want to leave it in rice, but how long should I leave it in for considering the damage doesn't seem all too bad?

Hm, what is it with people dropping their phones in the toilet? Lol! I swear 5th person i seen today, including my ex.
id say, if the damage isn't to bad, maybe overnight? Try it again and if its fine alright, if not maybe try it again for another day/ or night. If your not using it now id put it in there adn leave it in for the day and over night and check it in the morning, but if it works and you want to use it during the day overnight sounds fine