If you want to jailbreak an iPhone without a sim card, check out this video and learn how. Initially this video was only for PC, but it now includes instructions on how to perform the same feat on your Mac as well. You'll need a program here to get it done, and you'll need to be connected between your PC/Mac and your iPhone. Break free from the clutches of Apple today and feel the cellular freedom! Now YOU can jailbreak and iPhone without a sim card!