Here's how:
1. Download android apps the Diskdigger. This is one apps that can be used in recovering the deleted photos.
3. Click the photo/s you want to recover and click save this file or recover this file locally. It depends on where you want your photos to be placed. After saving your done recovering the photo/s.
Other apps that can be used for recovering photos
1. Dumpster Image & Video Restore
2. Remo Recover for Android