I have a lot of undeletable old photos on my iPhone. The photos are there, but no photo app shows the trash can icon. They aren't on iCloud or any other current device, so I'm thinking that at some time I must have done something like sync an iPhone I no longer have with a Mac I no longer have. I've usually just cloned one phone to the next, but I reckon that next time I may be in for a manual copying job.
This is a frustrating result of “syncing” an album of photos from a computer.
Apple decides that—despite you putting your album on your device—you are not allowed to alter the album in any way. You can’t edit photos or delete them…you must do those things on the computer instead.
