11-17-2015, 09:08 AM
I have the same issue on my Nexus 5 that is running Android 6.0 Build MRA58N.
Android is able to mount the USB storage device and it also shows up under Settings > Storage & USB > Portable storage. However, UAPP is still not able to find the USB storage device.
Android is able to mount the USB storage device and it also shows up under Settings > Storage & USB > Portable storage. However, UAPP is still not able to find the USB storage device.