I am traveling abroad and want to use my old iphone 2g. I jailbroke it using redsnow running the 3.0 software. How do I know if the unlock worked. I have cydia and I checked unlock. Is there anyway to know for sure that my phone is unlocked without inserting a new sim card. I don't want to have to screw with it when I am away and want to know it will work when I install the sim card.