I got my replacement this past Sunday and mine starts with 5K--indicating refurb. Without me even asking, the genius insisted the phone was brand new however and that he was not "lying". Lol. I guess he must have been challenged a lot when replacing iPhones.
At any rate, I'm fairly certain it is a refurb.
My first 2 iPhones were brand new. #1 speaker stoped working. Got it replaced with # 2. It wouldn't stay connected to the Internet. My third is refurbished. It's the best one I've had. I don't know why people make a big deal about their iphone being refurbished.
how do i find out what my serial number is and how is that determined its old or newest ?