My iPhone 6 Plus seems to have serious OIS (Optical Image Stabilization) problems. I've shot a series of photos of the brand-new Kano Raspberry Pi Kit when I suddenly decided to check them. Each of them has a strange motion blur. I conducted some further experiments and found that natural light photos and photos with a tripod seem to have less artifacts.
Then I tried to make a Genius Bar appointment here at the local Apple Store but they seem to be run out of Geniuses. So I've chatted with the Apple Support and will get a call tomorrow.
Maybe I should have gone directly to the Apple Store. Who knows.