Well,
My Nokia 1100, on Tracfone, just went through the wash - while it was on, and after a day of drying out on the hearth, it still worked.

I dont' think it's SUPPOSED to work after that, but that was a few weeks ago, and I've had no trouble with it at all.

FWIW, I often take my phone, wrap it in some of that shrink-to-fit window plastic, and then run a hair dryer on it. That makes the phone "rain-resistant" and more importantly, keeps the crud out of the power and headset jacks.