App To Get Moisture Out Of Phone. While the phone is off plug the charging cable in and check to see if you get the moisture warning. You can damage the phone speaker if you try it.
This is also the solution if your phone ever falls in the water. First go into safe mode and find out if its a hardware or software problem. Remove your sim card slot.thats the only way out for moisture once you dry it up.
The humidity is gonna stay around for some months or weeks.
While in safe mode try the charger. If you get the same $@$* its the hardware, so theres some kind of moisture dmg. The other fix, that has been in use for years. Gently shake the device to help remove water or moisture from the port.