: You can create this file yourself using a text editor. It should contain the following code:
Below is to help you obtain or create the correct file for your situation.
Because this file resides inside the protected system partition of Android, you must have a rooted device to manually add or restore it. Prerequisites A rooted Android device.
You do not necessarily need a special 2021 download, as this file structure has been consistent for years. androidhardwareusbhostxml file download 2021
In Android's "USB Host Mode," the mobile device acts as the host, powering the bus and enumerating connected peripherals. This requires the operating system to recognize the android.hardware.usb.host feature. The android.hardware.usb.host.xml
If your device's hardware supports OTG but the software does not, you can manually add this file. This process typically requires Root Access because it involves modifying the partition. Obtain the File : You can create this file yourself using any text editor. android.hardware.usb.host.xml permissions "android.hardware.usb.host" permissions Use code with caution. Copied to clipboard Move to System Folder : Use a root-enabled file explorer to move the file to /system/etc/permissions/ Set Permissions : Ensure the file permissions are set to Edit Core Hardware Config (Optional but Recommended) Find a file named handheld_core_hardware.xml tablet_core_hardware.xml in the same /system/etc/permissions/ Add the line inside the section if it is missing. : Restart your device to apply the changes. Developer Use Case: device_filter.xml
In Android, this file is a permission declaration. Its presence in the /system/etc/permissions/ directory is what allows the system to recognize and power connected USB peripherals. Some older or budget devices might have the physical hardware for OTG but lack this specific software flag in the system image. How to "Install" or Create It : You can create this file yourself using a text editor
Ensure your minSdkVersion is at least (Android 3.1), as earlier versions do not support host mode natively.
Users searched for this file in 2021 for several reasons:
In previous Android versions (9/10), the file sometimes included additional permissions like <feature name="android.hardware.usb.accessory" /> . However, Google’s 2021 CDD (Compatibility Definition Document) separated these. The clean, minimal version above is the correct one for 2021 standards. Using an older file could cause conflicts with Android 11’s scoped storage or USB accessory detection. Prerequisites A rooted Android device
PackageManager pm = context.getPackageManager(); if (!pm.hasSystemFeature(PackageManager.FEATURE_USB_HOST)) // The android.hardware.usb.host.xml is likely missing // or the hardware genuinely doesn't exist. Log.e("USB", "USB Host Mode not supported by system.");
If it is not already there, add the following line inside the permissions block: Save the file and exit. Step 5: Reboot the Device