So, I just purchased an iphone 4 off craigslist. The phone was working fine when the other person handed to me with their sim in it. I purchase the item and bring it home and its still fine. All the persons stuff is still on the phone so I decide to reset all on the phone and this is where my problem happens. I have no sim for the phone. Now it says IMEI Unknown and ICCID Unknown is that normal til I get a sim in it? The phone has the USB cable and the itunes logo. When I plug it into Itunes it says no sim detected plug in sim and reconnect to itunes.