I actually don't care for the DNA's camera that much, even coming from the original Incredible. Indoor shots aren't all that great, sure it's a f2.0 lens for low light but the ISO is always set so high that pictures do come out grainy and the color reproduction is a bit flat. I have no experience with the iPhone 4s/5 and s3 cameras, but honestly, the DNA's do not impress me. It's reminiscent of the original Incredible in terms of picture quality, but of course better, but not by too much. The auto focus is also pretty terrible in low light, I need to manually touch screen for focus on many occasions.
Maybe it's because I own a DSLR so I have set the bar higher in terms of photo quality.