If you find that your cell phone has gotten water in it, there is one way to dry it out that many people would never think of. First, take a cup that is bigger than your cell phone and place your cell phone in it. Once you do this, place uncooked rice until you have your cell phone completely submerged. Leave it for about 24 hours and when you return, your cell phone should be completely dried out.
Drying out a cell phone will take a little time to do. You can try a large bowl of dry rice to submerge the phone in and let it sit for a few days to a week. Periodically take it out and check to see if it is working.