You may wonder if photos have been deleted but not in trash folder, where are they. Though there is no a recycle bin nor a “Recently Deleted" album in iOS devices, it doesn't mean that your photos of precious moments are gone for good after inadvertent or mistaken deletions.
Whether stored in internal memory or external memory (SD Card), deleted data continue to exist in storage until new contents are added in place of them. (That's why one has to stop using mobile device after data loss.) Before being overwritten, deleted files just get invisible by users and inaccessible by normal tool.
To recover deleted photos, you have to perform 'Data Recovery' on your Android, which resorts to professional program or feasible workarounds. If you're in need of Android photo recovery, the following methods are the ones you would not like to miss out.
Step1: Download the fonedog recovery app.
Step2: Launch and connect recovery to your computer.
Step3: Select file type to scan.
Step4: Choose file to recover
Step5: Complete recovery.
More info you can read : How to Use Photo Recovery App for Android