USB-Device not recognized on Xiaomi: A complete guide to fixing the bug

You plugged a flash drive, external hard drive, or even a charger into a Xiaomi smartphone, but instead of the expected result, you saw a notification «USB-This bug can appear on any model, from the budget Redmi Note 12 to the flagship Xiaomi 14 Ultra, and the reasons for it are dozens of: from banal contamination of the connector to serious firmware failures. In this article, we will analyze all possible solutions, including hidden settings. MIUI, which the official support does not advertise.

The peculiarity of the problem is that it can manifest itself in different ways: sometimes the device is detected, but not mounted (for example, a flash drive is visible in Settings). → Storage, but it doesn't open, and sometimes the system doesn't respond to the connection at all. We'll look at both scenarios, and we'll also focus on specific bugs. MIUI, which are not found on Android stock, for example, why MIUI 14 stopped working OTG-cables, or why Redmi A2 see USB-exFAT storage.

Before you move on to drastic measures (like resetting your settings), check out three key points:

• 🔌 Cable and connector: try another USB-cable (preferably original from Xiaomi) and clean the port of dust with compressed air.
• 💾 Storage format: MIUI Often does not recognize the file system NTFS — convert the flash drive into FAT32 exFAT.
• 📱 Connection mode: Action selection may be hidden in the notification curtain (e.g., “File Transfer” instead of “Charging»).

If the basics didn't work, read on. We structured solutions from simple to complex so you wouldn't waste time on unnecessary manipulation.

1. Checking of hardware components: cable, port, device

Start with a physical diagnosis, and that eliminates 60 percent of the possible causes, and most often, the problem is mechanical damage or equipment incompatibility.

First, test another USB cable. Cheap cables (especially those over 1 meter long) often have damaged data wires, leaving only power lines to charge. Xiaomi’s original cables or certified USB-IFs (with a logo on the connector) guarantee stable operation. If there is no replacement at hand, connect the device to another smartphone or PC: if it is detected there, the problem is exactly your Xiaomi.

Second, look around. USB-Take a flashlight and check if there's any inside:

• 🧹 Dust or debris (clean with a wooden toothpick soaked in alcohol).
• 🔧 Bent contacts (bend them with a needle carefully if you have experience).
• 💧 Corrosion traces (indicates moisture ingress - requires professional cleaning).

Third, check the compatibility of the devices. Some external hard drives require additional power (e.g., power, WD My Passport, which the smartphone can't provide. USB-externally powered hub or connect the disk to your PC to transfer files.

MIUI settings: hidden USB and OTG settings

MIUI hides some of the USB features in deep menus. If your Xiaomi can't see the USB drive, but the cable and port are working, check the following settings:

Open Settings → Connected devices → USB. There should be a switch “Enable OTG” (on some firmware it is called USB OTG Storage).

1. Activate Developer Mode (7 times click on the MIUI version in Settings → About Phone).
2. Go back to Settings → Additional → For developers and find the default USB configuration.
3. Select File Transfer (MTP) or USB-accumulator (UMS).

On some models (e.g. POCO X5 Pro), the OTG is disabled after a firmware update to return the function:

adb shell settings put global usb_otg_enabled 1

This command must be entered through ADB (the instructions for setting up ADB are in the next section).

After the connection USB-The device in the notification curtain appears message "Charging through" USB», There is no option to transfer files – it is a bug. MIUI. Decision:

1. Connect the device.
2. Unlock your phone and swipe down the notification curtain.
3. Click on the Charge notification via USB and select File Transfer.

3. Firmware update and reset USB-settings

Mistake «USB-Device not recognized" often appears after update MIUI Or changing custom firmware, and 80 percent of the time, a slide back to a stable version or a reset helps. USB-stack.

First, check the relevance of the firmware:

1. Go to Settings → About the phone → System update.
2. If you have an update, install it, especially for the Redmi Note 11/12, where MIUI 13.0.5 had an OTG bug.
3. After the update, perform a soft reset: pinch Power + Volume up for 10 seconds.

If the problem persists, reset your USB settings:

1. Open Settings → Applications → Application Management.
2. Click on the three dots in the upper right corner and select Show System Processes.
3. Find it. USB-settings (or Media Storage) and clear the cache + data.
4. Reboot the phone.

For advanced users: if the reset didn’t help, try manually reinstalling USB-driver ADB:

adb shell pm uninstall -k --user 0 com.android.externalstorage


adb shell pm install-existing com.android.externalstorage

4. Formatting USB-storage device in compatible format

MIUI doesn't support NTFS by default, which is the main reason why 64GB+ flash drives are not defined, because the system sees the drive, but can't mount it because of file system constraints, and the solution is to reformat the flash drive to FAT32 or exFAT.

Use the official Microsoft utility to format:

1. Connect the flash drive to a Windows PC.
2. Open Explorer → This computer, right-click on the flash drive and select Format.
3. Select the file system: FAT32 - for flash drives up to 32 GB (maximum file size 4GB). exFAT - for flash drives from 64 GB (supports files >4 GB).

Start.

If the flash drive is still not determined after formatting, check it for broken sectors:

1. Run the Command Prompt on behalf of the administrator.
2. Enter the command: chkdsk X: /f /r where X is the letter of your flash drive.

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If you need to copy a file larger than 4GB to a flash drive, but MIUI can’t see exFAT, use an OTG adapter with NTFS support (for example, Meenova NTFS for Android).

5.Diagnostics through ADB and Hidden Commands

If standard methods didn't work, it's time for advanced diagnosis. ADB (Android Debug Bridge can be checked if the system recognizes USB-nucleus.

First, set up ADB:

1. Download the Google Platform Tools.
2. Unpack the archive into the root of the disk C:\ (It's got to be a way. C:\platform-tools\).
3. Enable USB debugging on your phone (Settings → About Phone → MIUI Version → 7 times Press → Return to Settings → Additional → For Developers → Debugging by USB).
4. Connect your phone to your PC and type in the command line: adb devices If the device is determined – ADB is ready to work.

Cost of repair USB-The port in Xiaomi depends on the model:

Before visiting the service center:

1. Make a backup of data (via Mi Cloud or on PC).
2. Check if the warranty is valid (on most Xiaomi models, the port is covered by a 12-month warranty).
3. Check whether the service uses original parts (on unofficial ports often do not support OTG).

⚠️ Note: if the phone is warranty, do not open it yourself - this will cancel the warranty obligations. mi.com/ru/service/center.

7. Alternative methods of data transfer without USB

If USB-The port is out of order, but the phone is still working, use alternative file transfer methods:

• 🌐 Mi Share (formerly Mi Drop): built-in feature MIUI for transferring files over Wi-Fi Direct. speed up to 20MB / s.
• ☁️ Cloud Storage: Upload files to Mi Cloud, Google Drive or Yandex.Disk, then download to another device.
• 📶 FTP-server: install the application FX File Explorer or Solid Explorer, Enable FTP-server and connect via PC.
• 🔄 Bluetooth: Slow (up to 1MB/s), but suitable for small files.

For mass transmission (for example, transferring photos from Redmi Note 11 to PC), it is optimal to use Mi Share:

1. On both devices, open Settings → Connection and Sharing → Mi Share.
2. Select Send on your phone and Receive on your PC (or other smartphone).
3. Confirm the connection to QR-code.

If you need to transfer files from a broken screen, but USB-port:

1. Connect the phone to the PC.
2. Enter in the command line: adb pull /sdcard/ C:\Xiaomi_Backup\ This will copy all files from internal memory to disk. C:\.

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Mi Share works even without the internet – data is transmitted directly over Wi-Fi Direct, which is 10 times faster than Bluetooth.

FAQ: Frequent questions by mistake «USB-device not identified»