Hey folks, I've seen conflicting reports here, so I just wanted to get a definitive answer. If you purchase an iPhone 4 from at&t premier, can you just sell the phone outright on eBay, or do you need to activate it yourself first? I'm using the upgrade on an existing line, but plan to keep the existing device. Do I need to remove the SIM card? I only ask because I see a ton of these things going onto eBay still shrinkwrapped and locked to at&t, so it makes me think I can just ship it out without doing anything to it... thanks!