I want to sell my iPhone before the announcement of the iPhone 5. I was wondering do Apple have on their system who currently owns an iPhone based on the serial number. For example if I was to sell the iPhone would the iPhone still be linked to me on Apple's system? My second question is if I posted a screenshot of my iPhone with the serial number displayed (Settings - General - About) on eBay for example is that a bad idea letting people see the serial number of the iPhone? The reason I want to show the serial in the first place is so that they can check if it's still in warranty, which it is. Gives people some assurance then. Thanks.