Because my phone (Sony Xperia V) have support for USB-OTG but do not have a quick way to unmount an attached USB device, I made this project. IMPORTANT 1: This application do not add support for USB hosting to your devices! IMPORTANT 2: This was suppose to be used on Sony Xperia V phones with Android 4.2, others are not supported, because I do not have other devices. Use it carefully and be aware about possible issues. If you encounter android.permission.MOUNT_UNMOUNT_FILESYSTEMS exception the