I'd purchased an iPhone 3g on the date of launch. 4 days prior to the warranty expiration (1 year standard warranty), I walked into an Apple Store with dead pixels and got it replaced with a new iPhone. Is the warranty for the replaced phone is valid for 90 days or those 4 days? The reason I ask is that I want to purchase an AppleCare protection for the iPhone now. Want to make sure if I'm too late.