Duplicate photos on iPhone
How do I delete the several duplicate photos that somehow came to be on my iPhone? There is not an option to delete. To clarify further, I can delete the original, but not the multiple duplicates. The duplicates do not show up on Mac, only original. In addition, please tell me how this happened and what I can do to prevent it. I only back up my phone to my iMac photos, iCloud is not an option.