I deleted everything on my old iPhone 8 Plus. I downloaded all my pics from Photobucket, Flickr, also YouTube files and stored them on the phone.
I turned my iPhone 8 on a couple months later to transfer the pics to an external hard drive.
when I did this, the number of pics rapidly declined...
Over the past few months (since October 2016), my iPhone 6 has been rebooting itself (as though I'm pressing the power and home button simultaneously). When the phone restarts, all of my apps appear as normal, but my pictures, videos, and music are all gone. Slowly, they restore themselves...