I bought a iPhone 5 on launch last year, and I had a problem with one of the buttons so I had it replaced at the Genius Bar today. When I checked the warranty on my old handset it had around 10 days left, on my new one it says October 2014. Is this a mistake? Do you get a fresh years warranty with a replacement iPhone? I'm really confused as I was going to buy AppleCare within a few days.