Refurbished iPhone 6?

I bough an iPhone 6 on amazon and it just came in. I'm a little sketched out because from the moment i turned it on, i never saw the set up screen. (The one that says hello in multiple languages and allows you to start your phone)

Is that odd? Should i restart it?

How can i buy an adapter for this?

On amazon, i bought a pair of headphones that were usb-c by mistake. I use iphone and a pc computer, they don't have usb-c plugs. The headphones are usb-c and i'm trying to find an adapter that makes usb-c go to a 3.5mm audio jack. I want one where the usb-c side is "open" and the 3.5mm jack side is "closed" (no hole). I don't really know how to explain this, hope somebody understands.

Getting photos off of a dead iPhone?

I got a new iPhone December 2016 and had stopped using my old one then, although it had still worked perfectly besides normal old iPhone stuff (constant draining battery, etc). I have been trying to turn it on recently, and this thing is full-on dead it seems. Won't charge at all. I have a friend who is in the hospital and probably won't make it much longer, and I know I have pictures and videos of him on that phone. They were not in the iCloud or shared photos or whatever. My question is, if I were to bring this dead iPhone to an Apple tech support in the Apple store, is there any hope they can retrieve photos through some sort of software or opening the phone up or something? I figured the answer was no since iPhones don't have memory cards, just wondering if anyone knew if something like this was possible before I go all the way down to the store.