I love my Iphone 3g and I am very careful with it. It is also my first phone with a sim card. I was wondering what were some good cheap or older phone models that I can use with my at&t Iphone sim card. I would like to have a backup phone to swap the sim into for when I go do things that could be a little too risky for the iphone to be in my pocket. such as going the lake or concerts and stuff