i just got a 16 gig 3g iphone, i was told i have to plug it in and use itunes to get it set up, i dont have a sim card so i took my sisters sim card from her phone which is a fido sim card and put it into the iphone, i live in canada by the way, so i put her sim card in, turned the phone ion turned itunes on plugged it in and itunes said" this sim card is not supported by this carrier', does this mean the phone is not unlocked and if so will it work when i unlock it or not? how does this work i am not sure what to do or how to work it i have friends that can unlock the phone and jail break it, will it work after this is done or not?