Is there a warranty for an iPhone if they cannot determine when the phone was purchased? I bought an iPhone 4 from a friend who got it a few years ago. It didn't turn on. Basically an out of box defect. It was never opened, activated, nothing. Their system shows that it wasn't ever touched basically and they can't activate it because it won't turn on. They troubleshooted it over the phone, too. I was told to go to the Apple store but just want an idea if they will be able to help at all.