I plan to get an iPhone 6 this fall no question. Problem, I have 2 iPhones: an iPhone 4S with a cracked back ($100 to fix according to iCracked), and an iPhone 5 with a cracked front glass + broken down volume button ($300 to fix, according to iCracked). What's the best way to go about this? Should I trade both in at the Apple store when I reserve the iPhone 6 (do they even accept 2 phones for trade-in)? Or should I repair and try to sell both on craigslist or some other site? Or some other option? Basically I want to get rid of both phones somehow when I get the 6. Thanks!