Debugging by USB on Xiaomi: how to disable and why it is necessary

USB debugging mode is a powerful tool for developers and advanced users to interact with a device via a computer. However, after using this mode (for example, for firmware, rooting or testing applications), it is recommended to turn it off. On Xiaomi, Redmi and POCO smartphones with a MIUI shell, the disconnection process has nuances, depending on the firmware version and device model.

In this article, you will find the most current ways to disable USB debugging for all versions of MIUI (12 to 14), including solutions for cases when the option is hidden or blocked, we will also discuss why this mode can pose a security threat, and what to do if you have a connection error after disconnecting.

Why disable USB debugging on Xiaomi?

Regime. USB Debugging opens low-level access to Android through the interface ADB (Android Debug Bridge: It’s useful for developers, but it’s fraught with risks for everyday users:

• 🔓 Malware vulnerability: When connected to an infected computer, attackers can install spyware or steal data without your knowledge.
• 📱 Unauthorized access: If the phone gets lost, an attacker with physical access to the device and computer will be able to bypass the screen lock through the device. ADB.
• 🔄 Conflicts with updates: on some versions MIUI enabled debugging blocks automatic firmware update.
• 🔋 Increased battery consumption: Background processes ADB You may consume additional resources even if you are not connected to a PC.

It is especially important to turn off debugging if you:

• 📲 Connect your phone to public charging (at airports, cafes).
• 💻 Use other people's computers to transfer files.
• 🔄 Selling or transferring the device to another person.

💡

If you often connect Xiaomi to different PCs, use the only charging mode in the menu USB-This blocks the data transmission without debugging.

How to disable debugging by USB on Xiaomi: the standard way

On most Xiaomi devices with MIUI 12-14, USB debugging is disabled via the Developer Menu.

1. Open the Settings. → The phone.
2. Find the MIUI version and tap it 7 times in a row until you become a developer!
3. Return to the main Settings menu and select Additional → For Developers (on some models, the path: Settings → System → Advanced Settings → Developers).
4. Scroll down to the Debugging section and turn off the switch next to Debugging over USB.
5. Confirm the action in the window that appears by pressing OK.

If the USB Debugging item is inactive (grey), it means:

• 🔌 The device is not connected to the computer (plug in the USB and try again).
• 🔒 The phone's locked. OEM (You need to turn off the same menu for developers).
• 📱 The firmware is modified (for example, custom recaveri is installed).

Make sure your phone is over 50 times charged%|

Save important data (debugging does not affect files, but it is better to be safe)|

Turn off your phone from your PC (if connected) |

Check that there are no other active dangerous options in the Developer Menu (e.g. Unlock). OEM")-->

Disable debugging on locked devices (MIUI 13/14)

Starting with MIUI 13, Xiaomi has tightened its security policy, and if you forgot to turn off debugging and can’t log in to the Developer Menu (for example, due to resetting settings or locking the screen), use alternative methods:

Method 1: Recovery Menu (Recovery)

This method works if you don’t have a custom recap (e.g. TWRP) installed:

1. Turn off the phone.
2. Press the Power button + Volume up until the Mi logo appears.
3. From the Recovery menu, select Wipe & Reset → Wipe All Data (this will result in a complete reset!).
4. After restarting, debugging over USB will be disabled automatically.

Method 2: Through ADB (if debugging is already enabled)

Paradoxically, if USB debugging is already active, it can be disabled via the ADB command:

adb shell settings put global adb_enabled 0

Once you have completed the command, restart the device. This method works on MIUI 12-14, but requires:

• 💻 Connections to a computer with installed Xiaomi drivers.
• 🔧 Debugging enabled (otherwise the team won't work).
• 📋 Permissions to execute commands ADB (There should be a confirmation window on the phone).

Yes, for firmware |

Yes, for rooting |

Yes, for app testing |

No, never did. |

I don't know what it is.-->

USB debugging does not turn off: reasons and solutions

Sometimes the USB debugging switch doesn't respond to the press or returns to its original position.

If none of the methods worked, check:

• 📱 Version MIUI: On some beta versions of firmware, debugging may behave unstablely.
• 🔧 Root rights: If the device is rooted, debugging can be disabled through apps like Magisk or Root Explorer.
• 🔄 System Updates: Install the latest stable version MIUI through settings → Update of the PO.

💡

If USB debugging doesn’t turn off after all the manipulations, it could indicate a virus infection. Check the device with an antivirus (like Dr.Web or Malwarebytes) and reset to factory settings.

How to check if the debugging is actually disabled?

Not always visually turning off the switch means that debugging over USB is completely deactivated.

Method 1: Through ADB (computer-based)

Connect your phone to your PC and execute in the command line:

adb devices

If you see a List of devices attached without the serial number of the device, debugging is disabled, but if you see a line like 1234abcd device, then the mode is still active.

Method 2: Through phone settings

Go to Settings → Connections and Sharing → USB and select Charging Only. If your phone doesn’t ask for permission to transfer data when you connect to your PC, debugging is off.

Method 3: Through Hidden Settings (for Advanced)

Enter the code in the phone application:

##4636##

In the menu that opens, select Phone Information and check the status of Debugging over USB. Some firmware shows the actual status of the option here.

💡

If you sell or transfer a phone, complete a reset via Settings → Reset → Delete all data. This is guaranteed to disable debugging and remove all associated permissions.

Security: What to do after debugging is disabled?

Disabling USB Debugging is just the first step to protecting your device, and to minimize the risks, you can do this by following these steps:

1. Take it all back. USB-Permissions: In the Developer Menu, find Revoke Permissions USB-Debug and press. This will remove all the saved permissions for previously connected computers.
2. Disable OEM unlock: In the same Developer Menu, deactivate the OEM Unlock option.This will prevent unauthorized unlocking of the bootloader.
3. Remove unknown devices from the trusted list: Go to Settings → Google → Security → Devices with account access and delete suspicious entries.
4. Update the firmware: Install the latest version MIUI through settings → Software updates: New versions often close vulnerabilities related to the USB-debugging.

⚠️ Note: If you have previously connected your phone to public computers (in Internet cafes, libraries, airports), perform a full reset.

Frequent Mistakes and How to Avoid Them

When working with debugging on USB, Xiaomi users often encounter typical errors.

• 🔌 "Device not 'identified' when connecting to PC: Install official Xiaomi drivers from mi.com. Windows may also need to disable driver digital signature verification.
• 🔒 "I couldn't turn off the debugging on MIUI 14: This is a bug in some versions of the firmware. Solution: Turn on Flight Mode, turn off debugging, then turn off Flight Mode and restart the phone.
• 📱 The phone is constantly asking for debugging permission: This means that the option to Always Allow from this computer is not saved. MIUI.
• 🔄 After reset, debugging is turned on again: On some models (Xiaomi) 12T, Redmi Note 11) debugging is saved after reset.Solution: perform reset via Recovery (see section above).

⚠️ Note: If you use Xiaomi with custom firmware (like LineageOS or Pixel Experience), the debugging process may be different. XDA Developers.

FAQ: Answers to Frequent Questions