I dropped my iPhone 4s in the toilet? - 1

I almost instantly pulled it out, and it works… But the volume is super quiet even on all the way up… I put it in a bag of rice, how long do I leave it in there for?

You should leave it in for at least at least 24 hours but its good to leave it in longer and it's best to not turn it on before but if you did and it worked then Its probably fine

Forever and upgrade to that iphone 5 or 6!

24 hours. If that won't work, use a hair dryer