That’s probably because they’re completely fake. This Asian supplier rigged up some fake plastic iPhone’s to properly fit a case around. I’m not sure what exactly the point was here, but they’re not denying these are fake.
Check out the pictures below and you’ll see the sticker of a homescreen. Even if they are fake, it’s the cleanest pictures we’ve seen of the purported next-generation iPhone.
Also be sure to check out the leaked photos archive here.