A:AnswerI'm not sure how you figure out the age, but I just got the phone 2 weeks ago and it was in perfect condition and has been working great. I don't know if I just got lucky, but I've no complaints about the iPhone 6s 64 gb.
A:AnswerI have no idea. It is an unlocked phone and in theory it should work anywhere because the iPhone 6s is a dual-mode phone (GSM and CDMA), but I am not sure. The exact model I received was an A1688, so you can check with Apple's website to see which bands it covers.