General Help please. Accidentally deleted photos from the camera.i need to recover them

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http://androidforums.com – I accidentally deleted an album of photos that were on my phone..I really mean't to delete 1 photo. I am on my PC and I have been searching on how I can recover them and have found solutions BUT I have one problem....THE SAMSUNG GALAXY S3 DOES NOT HAVE THE USB MASS STORAGE OPTION. I need that option in order to recover my photos. I have downloaded and installed the USB MASS STORAGE APK FILE but when I click to choose UMS MODE, an error message comes up saying "Could not get root privileges, external SD card is being accessed or other error (IOException). My phone is not rooted. I d (General)