Yes, as has been said over and over from the beginning of this thread, this is a specific artifact that won't affect every or even most of your photographs. That doesn't mean it's not an issue however.
I never stated it wasn't. I only pointed out that quite a lot here are exaggerating the problem because they fail to understand the technology.
Do you think there are no other serious photographers here??
Nowadays everybody thinks he/she is a photographer. If there were really photographers here the discussion would be more technical and more to the points made. The only replies I'm seeing are from people desperately trying to convince everybody here there is a problem. People who don't shy away from trolling.
We're not discussing "technical differences", we're discussing a specific image artifact.
A specific image artifact that is quite normal for cameras with a small sensor. Very easy to mix up.
As for that review, it directly contradicts your earlier contention that "all smartphone cameras are bad and so what's the difference."
It can't because it doesn't discuss that part. What it does is tell you how good the 6/6+ cameras are. The review contradicts what a lot of people here think they are experiencing. Be sure to read what they list as pros and cons.
More importantly, there are few images and all are resized and compressed so we can't see if the contrast/nr problem is there.
It is far more scientific than anything in this thread. What we see here are randomly posted pictures with very different lighting situations and absolutely nothing about settings, environment, etc. Looking for any EXIF info results in "no meta data".
Their camera rankings differ strikingly from all other review sites so it raises questions about their testing methodology and thouroughness. Actually the opaqueness of the review is rather suspicious in my view.
They are into photography and have a lot of tooling for the professional photographer. Nearly all of the iPhone reviews are done by enthusiasts and journalists. Most of them are able to take snapshots but are by no means a professional photographer. Also, they have absolutely no testing methodology at all, let alone they share it with the rest of the world. I haven't read a review that points at the problem discussed in this thread, nor any review that is different from the DxO review which draws the conclusion the 6/6+ cameras are fine.
It almost seems like you know the exact problem and are determined to disrupt and distract any constructive criticism of it.
Actually that is the problem with a few people here. It's even worse than with bendgate. People are really obsessed with the camera quality.
Anyways, if you're 6+ camera images don't have the problem we're investigating, why aren't you posting them here to show us exactly why "we don't understand what's going on?"
I don't have a 6+ but a 6 and posting pictures won't help with obsessed people nor with any sane person. Like you've already said so yourself: this requires a testing methodology so we can actually test it without having huge differences (which is what we have in this thread since people randomly post pictures without any protocol or information). If you really know you stuff than why haven't you started building such testing methodology? Or in other words, here's your chance to show you really understand the issue and know how to gather the information for it. For starters: include any details about environment, shoot similar pictures, use similar settings (and post them!), include EXIF info in the picture, what app are they using, have they tried a different app and so on.
), well I have all kinds of pictures of him with my 4S and yes, there is some grain, but you could make out his hair. This was taken with my 6 in decent light. He was not moving and I was resting the phone for stability. When views on my 15" Retina Macbook or my 23" 1080p monitor I can notice a drop in clarity. His fur is smudged. 
