iPhone doesn't have a trash bin in which your deleted photos can be stored. If you accidently delete photos on your iPhone, you may meet iPhone Photo Recovery to
recover deleted pictures from iPhone 4S.
iPhone Photo Recovery is professional application that can help you extract iPhone file and get all of photos back if you deleted your cherished photos by mistake. And it works well with iPhone 5, iPhone 4S, iPhone 4, iPhone 3GS.
More Guide:
how to recover deleted photos from iPhone