Missing kernel driver or hardware limitation. Solution: The XML file only tells Android the software feature exists. You also need a kernel with CONFIG_USB_OTG enabled. Check your custom kernel version.
/system/etc/permissions/android.hardware.usb.host.xml
If your device is not rooted, you cannot modify system XML files. However, you can try these alternative steps to fix USB host issues:
If you are looking to download or apply this fix, note that it requires root access to modify system folders. Stack Overflow Create the File : Save the code block above as android.hardware.usb.host.xml Move to System : Use a root file explorer to paste the file into /system/etc/permissions/ Set Permissions : Ensure the file permissions are set to (rw-r--r--). Update Core Hardware : You may also need to edit handheld_core_hardware.xml tablet_core_hardware.xml in the same folder to include inside the : Restart the device for changes to take effect. Stack Overflow Trusted Sources Official Source Code : View the original file on the Android Open Source Project (AOSP) Git GitHub Mirrors
Restart your device to let the system initialize the new hardware permission. Troubleshooting and Risks
Copy your newly created android.hardware.usb.host.xml file and paste it directly into the /system/etc/permissions/ folder.
Once it loaded, he took the USB-OTG (On-The-Go) adapter and clicked it into the charging port. He connected the camera. A notification instantly slid down from the top of the screen: "Open Camera to handle Canon EOS 5D?"
