a kinda similar thing happened to me a while ago. one weekend in 7th grade i dropped my ipod in the driveway of our condo in vt, when we were leaving to come back to mass. it was there for a week, in the snow, and when we got there the next weekend, the neighbors told us they found it earlier that day and it still worked perfect
i dropped my moto razr out of my car in a snow storm 2 years ago, during the summer, we found it in the driveway, took out the battery, and it still works perfect. my sister uses it as her phone, and we didnt even replace the battery.