If you don’t have a sim card to activate your iPhone and you need to skip this screen then follow the step by step video below to get your iPhone up and running in no time. This tutorial works on all version from iOS3 all to way to iOS6! Note: In the video, the activation screen my iPhone 3G has will probably be different than from what you have. Apple changed the activation screen in iOS5 and iOS6, however, this tutorial works for all iOS versions mentioned. You need to download the two files below. If you don’t know what version your iPhone is on, watch the video and it will tell you.
Redsn0w (Download the NEWEST one – its at the top)
iPhone Firmware File – (Download the version your iPhone is on).