My girlfriend's Iphone 2g 2.0 got wet a few years back, thus she stopped using it and moved on with a different phone. However, I picked up the phone the other day and was able after many attempts to restore it. It is now asking me to activate it with itunes? I have a 3gs iphone with att along with the sim card inside of it, can I use the same sim card (mine) to activate her phone back up? Can I unlock/jailbreak it before the phone is activated.

any ideas?