Why dont people know yet
I am not sure why this is not told more often but its used in a few repair shops with phones with recent water damage.
Water is conductive and can cause corrosion to the main board. Even if you soak it in rice issues can occur down the line. Within days or months due to corrosion. Easy way to dry out your phone without taking it apart and avoid corrosion is to simply take your phone and dip it into a bowl of isopropyl 99% of course. Iso does not corrode, yes its conductive but this is why we have to let it dry after and of course because its 99% alcohol it takes about a day or two max sitting in the open to dry. And I do mean max. if you take a fan onto it after it speeds it up a lot as well. You would only want to dip the phone in for a few seconds and shake it around to make sure the iso mixes with all the water and once it has the concentration of iso will clear up the water damage.
Now of course this is not 100% and works only if the internal circuits are not already damaged. For instance if you have dropped your phone in the sink while it was on, it coudl have shorted a connector and burnt the board and this of course is not fixable. But 90% of the time when your phone gets wet it will just short the battery and turn off your phone.
The biggest risk is getting any water between the back light and the LCD screen as if you do it will discolor the back light and forever have parts of your screen that look odd colored.
This method applies to most all electronics and I have persoanlly used it on
iPhone 3GS and 4
Car remote starters