Activating USB debugging mode is a fundamental step for any user who wants to gain advanced control over their device Huawei. This hidden option opens a gateway for interaction between the smartphone and the computer at a deep system level, allowing not only to install applications bypassing store restrictions, but also to conduct complex system diagnostics. Without this option enabled, many advanced utilities, such as ADB (Android Debug Bridge), simply will not see your device in the list of connected devices. This becomes a critical obstacle when trying to unlock the bootloader, install a custom recovery, or restore the system after an unsuccessful update.
Without option enabled USB debugging many advanced utilities, such as ADB (Android Debug Bridge), simply will not see your device in the list of connected devices. This becomes a critical obstacle when trying to unlock the bootloader, install a custom recovery, or restore the system after a failed update.
The activation process may vary depending on the version of the shell EMUI or HarmonyOSinstalled on your gadget. In some cases, manufacturers deliberately complicate access to these settings for security purposes, so it is important to strictly follow the algorithm of actions described below to avoid unnecessary errors.
Preparing the device and searching for the developer menu
The first step before enabling debugging is to activate the hidden “For Developers” section. By default, this menu item is hidden from the eyes of the average user to prevent accidental changes to critical system parameters.
You need to go to the main phone settings and find the section System and updates. Inside this menu you should find the item About phone. This is where information about the system assembly is hidden, multiple clicks on which serve as the key to unlocking the engineering menu.
Find the line Build number and quickly click on it 7 times in a row. The interval between clicks must be minimal, otherwise the counter will be reset. After successfully completing the action, the system will ask you to enter your screen unlock password or pattern.
⚠️ Attention: If you have Find My Device enabled or have strict corporate profile security policies, the system may block the ability to enable Developer mode until they are disabled.
Once you enter the correct access code, a pop-up notification will appear on the screen indicating that you have become a developer. Now a new item will appear in the menu System and updates a new item will appear - For developers, which was previously hidden.
If the “Build number” item is not activated after 7 clicks, try clearing the application cache “Settings” through the app management menu and repeat the procedure.
Activation of USB debugging and confirmation of rights
After entering the menu For developers a long list of various technical parameters and switches will open in front of you. We are only interested in the function USB debugging, which is usually located at the top of the list or in the “Debugging” subsection.
Move the slider to the active position. The system will immediately issue a warning that this mode is for development purposes only and may leave the device vulnerable to attacks when connected to untrusted computers.
Confirm the action by clicking OK in the dialog box. However, this is not the end of the procedure: for full operation, you must also allow the installation of applications from unknown sources if you plan to use ADB to install APK files.
- 🔌 Connect your smartphone to the PC with an original cable for stable data transfer.
- 🖥️ Select the mode connections
File transfer (MTP)in the notification shade. - ✅ Allow access to phone data when prompted on the smartphone screen.
When you first connect to a new computer, a dialog box will appear on your phone screen asking “Allow debugging from this computer? Be sure to check the box “Always allow from this computer” and click OKso as not to confirm the action again every time.
☑️ Checking ADB connection
Installing drivers and setting up ADB on computer
Even with a properly configured phone, the computer may not recognize the device without the appropriate software. For devices Huawei it is critically important to have the correct drivers that ensure correct communication via the ADB protocol.
It is recommended to download and install the official utility Huawei HiSuite from the manufacturer's website. It will automatically pull up all the necessary drivers for your model, be it P30 Pro, Mate 40 or newer series.
If you prefer a minimalistic approach and do not want to install unnecessary software, you can use the universal package Platform Tools from Google. Unpack the archive into a convenient directory and open a command line in this folder.
adb devicesEnter this command in the terminal. If the drivers are installed correctly, you will see your device's serial number and status device. Status unauthorized means that you skipped the step of confirming the RSA fingerprint on the smartphone screen.
⚠️ Attention: Avoid using drivers from third-party builders or outdated versions, as they may cause a hardware conflict and blue screen of death (BSOD) when connecting the cable.
If the Windows Device Manager displays your device as an “Unknown Device” or “Android ADB Interface” with a yellow exclamation mark, you will need to manually install the driver by updating the drivers and specifying the path to the folder with the files .inf.
Solving the problem with code 10 in the Device Manager
If the error “Code” is displayed in the Device Manager 10" for Android ADB Interface, try disconnecting the device, uninstalling the driver with the "Uninstall driver apps" checkbox, restarting the PC and connecting the phone again, allowing the system to automatically find the HiSuite driver.
Features of unlocking the bootloader on modern models
Owners of smartphones Huaweireleased after 2018 years, face serious restrictions. The company has officially stopped issuing bootloader unlock codes, which makes it impossible to obtain root access or install custom firmware using standard methods.
However, enabling USB debugging remains necessary even under these conditions, since many tools for working with the file system, backing up or removing logs continue to function without an unlocked bootloader.
There are third-party services and paid methods for bypassing the blocking, but their use is associated with high risks. Authentication algorithms in new versions EMUI and HarmonyOS have become much stricter.
| Device model | Year of manufacture | Ability to unlock BL | USB Debugging Status |
|---|---|---|---|
| Huawei P20 / P20 Pro | 2018 | Officially Closed | Available |
| Huawei Mate 20 X | 2018 | Code Required (DC-Unlocker) | Available |
| Huawei P40 Pro | 2020 | Impossible (hardware) | Available |
| Honor 9X | 2019 | Depends on region | Available |
| Huawei Nova 9 | 2021 | Blocked | Available |
For older models, released before mid-2018, the procedure for obtaining an unlock code through the official application Huawei Unlock may still work if the servers have not been completely shut down in your region.
Additional debugging options and wireless connection
In the menu The developer hides many other useful functions that may be useful to an advanced user. For example, the option Wi-Fi debugging allows you to get rid of wires when testing applications or transferring files.
To activate wireless debugging, the device and computer must be on the same Wi-Fi network. Turn on the corresponding switch in the developer menu and follow the instructions to pair via IP address and port.
It is also worth paying attention to the “Background process limit” parameter. It is not installed by default, but can be limited to test application behavior when there is low RAM. It is not recommended to change this value for everyday use, as this may disrupt the operation of instant messengers.
- 📡 Turn on “Show touches” to visualize taps on the screen when recording video instructions.
- ⚡ Activate “Animation acceleration” for a subjective feeling of interface speed.
- 🐛 Use the "Error Log" to diagnose failures of specific applications.
Another important function is Selecting an application for a fictitious location. It allows you to replace the real GPS coordinates of the device, which is useful for testing geo-dependent services or games, although many modern applications have learned to detect such substitutions.
⚠️ Attention: The developer menu interface may differ on different firmware versions. If you do not find the described function, use the search in the settings by entering a keyword in English or Russian.
Wireless debugging is convenient for developers, but for initial pairing and low-level debugging (Fastboot) you still need a reliable cable cable.
Solving common connection problems
Often users are faced with a situation where all the settings are correct, but the computer stubbornly does not see the phone in debugging mode. Most often, the problem lies in physical damage to the cable or port.
Try replacing the USB cable with a known good one, preferably an original one, that supports data transfer, and not just charging. It is also recommended to switch the cable to another USB port, preferably to the USB 3.0 connector (blue) on the back of the system unit.
If the problem persists, check if the “Charge Only” mode is enabled on your phone. When connecting the cable, swipe down from the top edge of the screen, click on the USB connection notification and select the mode File transfer.
In rare cases, a full reset of debugging settings helps. Go to the menu For developers, find the item Revoke permissions for USB debugging and confirm the action. Then disable and re-enable the debug switch itself.
What to do if ADB sees the device as offline?
If the `adb devices` command shows an `offline` status, try restart the ADB server with the commands `adb kill-server` and `adb start-server`, and also check whether the antivirus is blocking the connection.
For macOS and Linux users, you may need to configure rules udev to correctly determine access rights to USB devices. In Windows, the problem is most often solved by updating drivers through the device manager with manual selection from the list of compatible ones.
Frequently asked questions (FAQ)
Is it safe to keep USB debugging enabled all the time?
No, this reduces the security level of the device. If you lose your phone with debugging enabled, an attacker could gain access to your data or install malware through your computer. It is recommended to enable the function only while performing necessary operations.
Why does the computer not see Huawei after enabling debugging?
The most likely reason is the lack of ADB drivers or the use of a cable that only supports charging. Make sure that HiSuite is installed, the cable is working properly, and the file transfer mode (MTP) is selected in the notification shade.
Is it possible to enable debugging if the phone screen is broken?
If you did not activate debugging before the breakdown and did not confirm your trust in the computer, it is almost impossible to do this without a working touch screen. However, if debugging was enabled previously, control is possible via the mouse (with OTG support) or ADB commands.
Does enabling debugging affect the device warranty?
Enabling USB debugging itself is not grounds for denial of warranty service. However, any actions performed with its help that lead to a breakdown (for example, unsuccessful firmware) may void your warranty.
How to completely disable developer mode?
Go to the menu For developers and turn off the main switch at the top of the screen. After this, the menu item will disappear from the system settings until the next multiple click on the build number.