My previous post was removed without explanation, so I'm reposting, this time with photos added directly to Reddit.

I was really looking forward to the 4x Telephoto lens. However, it produces insane artifacting on the edges of the photo.

It is totally unusable in low light photography.

In daylight it's doing pretty well, but the artifacts are still there. The algorithm is better at hiding them, but this is clearly a severe hardware issue.

See example images and comparison with iPhone 12 Pro Max.

THESE ARE NOT CROPPED IMAGES FROM THE MAIN LENS. SEE CAPTIONS FOR EACH PHOTO.