the app. detects and offers solutions to issues around usb host and otg cables. this software will not mount or show the files on a usb drive. it verifies your otg cable is good and that android can see the usb device. other software may be required to see the files. usage: 1. disconnect your otg cable when prompted. 2. connect your otg cable when prompted. 3. if everything is ok, you will get 4 green check marks. if nothing happens or you get less than 4 green checks, tap more info (web) for a description of the problem. software can not overcome a hardware limitation. if your device does not support otg, nothing will happen when you connect the cable. please do not write a bad review because your hardware does not support otg! if your device does support otg and it is not detected by t