I have seen throughout the years that my early photos have started disappearing and it has gotten to such a point that I know I had a photo of something, but I look back and it’s gone (I also see blacked-out corrupted photos) but not only is it gone, other photos are obviously gone. The idea that the first 2 years I had an iPhone are left with only 40 pictures left is insane. I had hundreds. Apple has been terrible with the photos app in the past. It took them around 5 years to fix the bug on the iPad that kept you from zooming in, rotating to another orientation and back, and resuming full screen without stalling and having to restart the photos app. The fact that they were that negligent about that bug for so many years is indicative of how they treated the photos app. It’s most likely that when there was very little free space they started corrupting the photo data or pushing it out without prioritizing it’s importance, and this has been going on for years. An app can be redownloaded (usually) a 10 year old photo can’t. Maybe Kodak should start a photo-backup cloud for iPhone users.