How do these work? I bought an iPhone 6 at launch last year so the warranty is gone. I also bought a 6S Plus last month so I am giving this phone to my sister. I dropped it during a hike last year and scuffed it up a bit on the back. Still works great and screen had glass protector so screen is still perfect. Is that enough to warrant a out-of-warranty replacement from Apple and how much would it cost now that the new 6S phones are out? Thanks.