there is a little green dot in the battery area. that will represent water damage. if you have this the phone is no good, will not work. do you have insurance?> if not go to a store and they may give you a deal on a new phone or used phone.
No way is it dry after 3 hours, take off the covers and remove the battery and put it close to a radiator or another heat source, not hot enough to damage it, and leave it for at least 3 days to dry properly and then it may work.