How to clear out this Photos/ Camera Roll related data taking space on the iPhone even after Deleting all Pictures?

**iPhone 6 iOS 10.2:** * Used iMazing: Selected iPhone Between left sidebar options: Pick “Camera” instead of “Photos” - kinda counterintuitive. Select All / CTRL A Delete from right Menu / or Trash icon buttton. * Deleting 7000+ photos took a while. To test if it’s working I closed iMazing and when I got back in as before, was left with 2000 or so. * Repeated and mostly gone. For some reason 2/300 were left and would not delete no matter what I tried via iMazing. * So deleted it using the Photos App - Selecting from Bottom right to Top left (auto scrolls) and selects all. * Delete & then Remove recently deleted. Now I thought this was done; no pics or videos or anything showing inside photos/ camera roll. ————— But when I look via **General > iPhone Storage** and select the app: **Photos & Camera - 318 MB >** **Synced from iTunes Library 70 MB** **Shared Photo Stream 248.1 MB** I don’t remember using any of these above. How can this be cleared out?