When apple replaces a defective phone with a replacement phone , how do we make sure it is new not remanufactured. I had to give back my new Iphone 6 plus the day after due to back camera lens being not clear.( small dust or smudge?) , it was replaced by the phone that the Genius Bar employee had with her to compare my phone. The genius employee just gave the serial no .sticker ripped from the box for my feature reference . My question is do they have one demo phone with them all the time to compare phones for defects or every time they see a customer get new box from back? I didnot see her opening the box in front of me! Neither she gave the box. I want to make sure I got the new phone not a demo phone or remanufactured, since mine was a day old phone. I am not getting clear answers from apple or apple store. Mine was brought from At and T and the apple care directed me to go to apple store for device check. Now I cannot return the phone to At and T . I am new to this since all my previous apple products were flawless.