My brother found an iPhone 2G in a parking lot a few days ago, with no SIM card in it. It was pretty badly beaten up (bottom portion of the back is missing, screen is scratched) but in working condition. It was locked so he couldn't get into it to see any of the contacts and maybe find out who's it is. So he reset it. Now it just keeps saying "insert SIM card". I myself have an iPhone 3GS and inserted it and plugged it into the computer. It wanted me to active it with AT&T. What will this do as far as my account goes (I don't want to be charged or have my own iPhone screwed up in any way)? I also have a SIM card from another phone that is still active, but I don't want that charged either. And if activating it won't work without charging me or something, is there anything else we can do to actually get into the phone?