Saving a Cell Phone

My son dropped his cell phone in the toilet on Friday, and we figured it was toast and would have to be replaced, but I remembered a friend telling me to soak the phone and battery (taken apart) in a ziploc bag full of uncooked rice, and that can save phones that have gotten wet.  I was a little skeptical, but I figured it was at the very least worth a try.  My friend left hers in the rice for 3 days, but after 24 hours of my sons being "treated", my curiosity got the best of me, so I pulled it out, and it worked as good as new!  I will have to remember this trick!