The Endoscope App opens your external borescope camera by USB OTG and reads it through your android device. Enter the USB to endoscope camera borescope and click the camera icon and then take a photo and record video. You can watch, delete, and edit all your recorded videos and photos from the gallery. Endoscope app is working like a sewer camera and you will not need the camera drain unblocker or plumbing repair anymore.