If you have a water damaged iPhone your in the right place....
Obviously you should know whether or not your iPhone has water damage but just to start remember you get your phone wet, don't touch anything no buttons nothing! If you do it will most likely short circuit the phone. If you did well it's not too late your phone might still be repairable. I once got my iPhone submerged on a log ride at Playland, and accidentally turned it back on and it flashed white and eventually powered off. I thought I was finished.