Start the Photos App by tapping the Photos icon in the iOS Home screen.
Select the photo or video that you want to duplicate. You can do this from the Camera Roll or any of the other iOS photo albums.
Tap the “Share” icon. When you tap it, the Photos app displays several options for sharing pictures.
Tap the “Duplicate” button.
This step creates a duplicate file instantly. Regardless of where the original photo/video is in your Camera Roll, iOS puts the duplicate at the end. You can duplicate several photos/videos by selecting them as above, then tapping the Duplicate button. Note: the Duplicate and Copy buttons serve two different purposes. Use “Copy” to copy a photo or video that you would then paste in a text message or other app; it does not create a duplicate file. Enjoy!