Hi, I need help activating my iPhone 5. It was given to me by a friend. I'm not using the phone as a phone but instead, an ipod. It came with a sim card when given to me. However, when I was setting it up, it said for me to insert a sim card. Which didn't make sense because there was already one inside. So I bought another one and tried it. Same thing, it told me to insert a sim card. I don't know what to do! I really want to use it as an iPod. Please help me out!! Thank you!