Owners of Xiaomi, Redmi and POCO smartphones often face the need to deep-tube the system or transfer files beyond the standard interface. This is where the USB debugging mode, a hidden developer tool that gives direct access to the Android operating system, comes to the scene. Many users are scared of the term, considering it the lot of programmers, but understanding its functions can save your data or help restore the device after a crash.
Essentially, enabling this option allows the computer to interact with the phone at the command line level, bypassing the graphical user interface, which is necessary for installing specialized applications, deleting logs (error reports), unlocking the bootloader or even flashing the device. Without activating this protocol, most advanced utilities simply “will not see” your smartphone, even if the cable is working.
In this article, we will discuss how to safely activate this mode, what risks it carries if used improperly and why it should be turned off after work is completed, and how to turn your gadget into a powerful tool for managing the system without harming the stability of MIUI or HyperOS.
What is USB Debugging and Why You Need It
Android Debug Bridge (ADB) is a client-server program that is part of the Android SDK that enables communication between your computer and your device. When you activate the appropriate switch in the menu, your smartphone goes into a command standby mode from an authorized PC, a fundamental mechanism for application developers to test code in real time.
But debugging has long gone beyond purely programming, with regular users using it to install applications from sources that are blocked by Google Play’s security system, or to remove system debris that cannot be erased by standard methods, and the only way to do a full backup with all the passwords and application data before resetting.
⚠️ Warning: While the phone is in debugging mode and connected to a charger in a public place (cafe, airport), unauthorized access to your data is theoretically possible!
In addition, it is through this interface that programs work to customize the interface, change the system fonts and even emulation. GPS-Without debugging enabled, utilities like Xiaomi ADB/Fastboot Tools will not be able to perform their tasks, as the operating system by default blocks external interventions for security reasons.
How to turn on debugging mode on Xiaomi and Redmi
The process of activating hidden features on the MIUI and HyperOS shells is slightly different from pure Android and requires sequential actions. First, you need to go to the About Phone menu in the basic settings. There you need to find the MIUI version (or OS version) line and quickly click on it 7-10 times in a row until the pop-up notification “You became a developer” appears.
After that, a new option will appear in the main settings menu, “Additional Settings” (in some firmware versions it may simply be called “Advanced Settings”). Inside this section, you will find the “Developers” menu, and this is where the desired USB Debugging switch disappears.
☑️ Algorithm for enabling debugging
When you first turn on, the system will give you a risk warning, you have to agree, and then, when you connect to your computer, confirm the debugging permission in the pop-up window on your smartphone screen. It's important to check the print of the RSA key that is displayed on the screen to make sure that you are connecting to your trusted computer.
Configure additional parameters of the developer
The developer menu includes not only the debugging switch, but also a variety of other options that affect the interface and communication with the PC. For example, you can change the default USB configuration here. If your computer does not see the phone in file transfer mode, it is worth checking the default USB Configuration and select MTP (Media Transfer Protocol).
You can also use settings that speed up the visual interface, and scales for window animation, transitions, and animator duration can be reduced to 0.5x, making Xiaomi subjectively faster, but don't turn them off completely, as this can disrupt the visual logic of navigation.
| Parameter | Recommended value | Impact on the system |
|---|---|---|
| USB debugging | VL (as required) | Allows ADB teams |
| USB configuration | MTP / File Transfer | Access to the file system |
| Animation scale | 0.5x | Interface acceleration |
| Keep the screen down. | Off | Savings of battery when charging |
You should pay special attention to the item "Stay awake." If you activate it, the smartphone screen will not go out during charging. This is useful when debugging applications, but harmful to the matrix and battery life in normal use, so keep this option off.
💡
If after turning on debugging, the phone began to warm or discharge quickly, check the running background processes in the developer menu - perhaps some application "hang" in the debugging cycle.
Using ADB to manage the system
To work with the command line on your computer, you need to install Google's Platform Tools. Once you unpack the archive and connect the phone, you can send commands. For example, the adb device command will show you a list of connected devices and confirm the success of the connection. If a device with a serial number appears on the list, then the connection is established.
One of the most useful features for Xiaomi users is the ability to remove system applications that cannot be removed through settings. With ADB commands, you can safely uninstall components like Mi Credit, Mi Video or advertising services without disrupting the basic functions of the phone.
adb shell pm uninstall -k --user 0 com.miui.videoplayerAlso, through ADB, you can take full screenshots (screenshots) without saving to the gallery, record video from the screen with sound (which is not always possible with standard means) and broadcast the screen to the computer monitor in real time for presentations.
Dangerous ADB commands that cannot be entered without understanding
Connection problems and their solution
A common problem for users is that the computer can't see the phone despite the debugging enabled. 90% of the time it's the cable. Many complete cables are only for charging and have no data lines. Try replacing the cable with the original or certified analogue with the labeled (data transfer).
The second common reason is drivers. Windows can automatically install a standard MTP driver, but debugging mode often requires a specific ADB Interface driver.It can be installed through Device Manager by manually specifying the path to the driver folder from the SDK Platform Tools.
If the screen of the smartphone does not pop up a window requesting permission to debug when connecting to a new PC, try the following:
- 🔄 Turn it off and reconnect. USB-cable.
- 🔌 Try another one. USB-port, preferably on the back of the system unit (direct to the motherboard).
- 📱 In the menu "For developers" find the item "Debugging by USB (settings) and select "Always request" or "Always allow».
⚠️ Note: If you have changed your computer and your phone is still trying to connect to your old one, the keys are not available. RSA You can have conflicts. In the developer menu, find the item "Cancel debugging permission for the user". USB» Click it to reset all previously authorized computers.
Security: When to turn off the debugging
Keeping debugging on is a security hole for your device. An attacker, having physical access to an unlocked phone with debugging enabled, can copy all your data, including passwords from banking applications and correspondence, almost instantly using automated scripts.
In addition, some banking applications and games with enhanced cheating protection may fail to work or warn of a potential threat if they see an active developer mode, a security mechanism that blocks the introduction of modified code into the application memory.
It is recommended to enable this function only for the duration of specific tasks (transferring large amounts of data, installing specific software) and immediately turn off the USB debugging switch after completion of work. This will take a couple of seconds, but will significantly improve the level of protection of your personal information.
💡
The main safety rule is to enable debugging only on a trusted computer and turn off immediately after use. Do not leave your debugging phone unattended in public places.