You don't need to jailbreak it. I will work fine on WiFi and you can use it like an iPod touch. It's already been activated, but the SIM isn't valid anymore, so it will just say "no service" at the top. You can take the SIM out if you want and it will say "no sim" or you can just leave your old SIM in there, it won't make any difference as to the function of the iPhone. The new SIM in the 3GS has your phone #/info transferred to it. You can sync them both with the same iTunes account if you want and put the apps you buy on both devices.
__________________
And all the science, I don't understand. It's just my job 3 nights a week.
|