Assuming you mean the Lumia 1020, I don't have any hands-on experience although I've seen a lot of images others have taken. And, to be honest, there's not that much difference. The Nokia has a much better flash, and somewhat better optics, together with a sensor that has too many pixels for its size. And the Nokia's native app is more photographer-friendly than Apple's (which is good, because you don't have a lot of other choices). At a technical level it clearly has superior—if slow—hardware, but that doesn't really translate into substantially better images as far as I can see. The meat of the matter is that the best mobile photography around at the moment all seems to be being taken by people using iPhones!