Im in a vacations trip at the beach, eventhough I know my phone has Ip68 certification I don't sumerge it on the pool or the sea. Nevertheless I dont worry too much y some drops of water touch it. So yesterday at the beach some drops of water got on the phone I did'nt mind until I got to the hotel and phone wouldnt charge because "There was moisture in the charging port" so waited until the mosture went away and it worked properly. Today when I was about to charge my phone it stoped charging and now when I conect it does nothing, in few words my phone doesnt want to charge, I need help!!
I would recommend giving this troubleshooting article a try: http://www.samsung.com/us/support/troubleshooting/TSG01001449/
Your phone doesnt need to be dropped it water to collect moisture. You were near bodies of water. Heavy moisture around it, also sand is an issue. It sounds like you fried your charging port so I suggest you go to a authorized retailer and get it checked up/fixed.
Never hurts to try cleaning the port. Water on the port seems to love to cause corrosion and oxidation right away so take a Q-Tip and tear bits off and stuff them gently into the port until it's full and using a needle gently swabthe port. Then use the needle to remove all the cotton.
Might be able to also use rubbing alcohol in the port and then stuff it full. That's what I did but I'm not going to reccomend putting a liquid in the port since I'm uncertain of any side effects.
I've heard you need to let it dry for up to 24-48hrs if u plan on wetting it. While that happens u can always wirelessly charge it. I've gone swimming with my phone and I wouldn't wire charge it for 2 days JUST TO BE SAFE and so far so good. Works fine.