I'm hoping for a quick answer to these questions, for a purchase is imminent today. We will be buying a 16G iPhone 3GS later today. It will be cash and carry at a discounted price. The phone will be unlocked. My questions. Can a new, boxed iPhone be sold unlocked? If it is unlocked, wouldn't that mean that someone would have had to open the box to unlock it? Finally, if the above is correct, then how can one know if the phone has been used, (for weeks, months or more)? Thanks!