Ya, there should be glass covering the whole top edge where the camera is, but yours doesn't have one/ I didn't even know it was possible to get a manufacturing defect like that!
nothing else is missing. there is a sticker over the back of the phone. you can see where its horribly cut and not aligned correctly. from what i see, it looks like theres nothing wrong with the phone. there is no way for us to see the clear lens missing at this angle.