Phone super slow and overheating after dropped in salt water!

@f0rmkd "i reacted soon took of the battery and put it in rice. I had it in rice for 24 hours and when i tried to power it up again it did," This is a myth that really has to disappear. First off skip the rice. It is absolutely useless. It will not help you fix your phone. All it does it provides a false sense of security. It will not clean your phone, it will not prevent corrosion.

Second, stop continuing to try to charge, sync or otherwise use your phone. This potentially can make a bad situation worse.

Salt Water will get your components to corrode very severely. The very first step I would take is to disassemble your phone. Use this guide to remove the board. Even so it is not your exact model, it should get you there. Once you have to board removed, take a careful and close look at all components and connectors. Truly assess the damage. Look for major corrosion, evaluate the pins in the connectors etc,. Take a look at all connectors as well as cable ends. After that I would suggest that you clean it a couple of times in sterile water, not drinking water (that might have helped right after it got submerged in the salt water). Use a soft brush and clean it very, very thouroughly with the sterile water. With the amount of corrosion that I envision, you will have to remove all the EMI shields. Once you got the gross contamination cleaned, use 90%+ isopropyl alcohol and clean your parts some more. For a proper cleaning, use this guide. It was written for an Apple iPhone 3G but it is still pertinent to your phone as well. I can not stress the importance of a good cleaning enough, so do it over and over while replacing the alcohol after each cleaning. Do not use compressed air for the cleaning since that can drive liquid as well as corrosion particles into areas that will cause trouble later on. Do not use drinking water, if you need to use water, use sterile water. Also, you do not need to leave it to dry for a day. Isopropyl alcohol in the higher concentration will evaporate quickly and dissipate the water. The importance here is the cleaning. If you can get it professionally cleaned, than do so. this is not an easy task and you may need to consider professional help. Check with users like @refectio who have specialized in that type of repair, see what he thinks. Do not forget to replace the battery. This is a must and not an option. It will fail if you do not take care of it now. Keep in mind that water damage is the hardest to troubleshoot and to repair. Hope this helps, good luck.