Was getting empty data thumbnails after upgrading phone (somehow lost during backup) for 5 years worth of sent/received photos from the SMS app. Couldn't figure out how to fix it so I decided to just find the photos from old and new backups using 'iBackupBot' and delete them from the phone afterwards. So I found the folder where all the media for the SMS app was located in and deleted it. Even went to various deep folders within the phone after when it didn't work to find more thumbnail files/photos etc and deleted those as well. But I still get these empty data thumbs when clicking details in the SMS app. Does anyone know if there is a file that is storing this information still that I'm missing, or what I need to do to find what the hell I need to do to clean it up. The phone doesn't recognize them as photos anymore (iTunes says 0 photos on phone). And I need to keep the history as i refer to it many times.