http://www.cambridgeincolour.com/tutorials/diffraction-photography.htm
I had these sorts of issues in mind, really.
Generally speaking, cheap DSLR lenses aren't that bad of quality. Still though, they're focusing light on sensors that are larger than what you might find in this camera. By larger, I mean physical size. I doubt this phone is packing a 35mm film sized sensor. I would imagine the density of pixels is crazy.
The lens may be a, what was it, f2.2? That's pretty wide open, but if the pixel density is high enough it could still have issues with diffraction. My D7000 worked best at about f5.6. Look at the Sony DSC-RX100, you'd need to stop down to 2.8 to avoid those issues. There's the issue of quality of lens too, and with the lens wide open like that there's other troubles you have to deal with... like chromatic aberration.
Quality of lens, yes... Hmm, think about a cheap camera compared to one with good glass? We're looking at extremes here, but it'll illustrate a point. I'm thinking a hipster plastic lens camera compared to a top of the line Canon. Yes, extremes, but you get my point. As that pixel density gets higher, as the sensor gets smaller, it's going to magnify those flaws somewhat. I'm not saying the lens on this is so cheap, but still, I'd wander where it's quality bar is at. The photos do look nice though, so it seems it's not so bad.
Those images are down-sampled though, the ones I've seen. It's actually a brilliant plan to get some great images out of the camera. The straight 41mp photo though, I can't imagine it being all that great.
However, having said all of that. My Nikon D40, a 6mp camera, with a cheap lens, took better images than those samples. It's not obviously so, but if you peep at the pixels a little closer it becomes more obvious. Maybe it can't compare to the low light shots, but there's certain things about the daylight shots that I didn't like, that my D40 never did. However, overall picture, they're great. Those issues are something a photographer might notice, but most run of the mill people wont.