Modern Xiaomi and Redmi smartphones offer users a lot of functionality, but standard control logic sometimes seems obscure. Often times, double-pressing the power button doesn't trigger the right app, and the volume key combination only works for a screenshot. Users are looking for ways to adapt the device to their habits to speed up access to the camera, flashlight or favorite programs.
Reassign buttons to Xiaomi in several ways, from built-in system functions to advanced methods using ADB debugging. In this article, we will analyze all available options, including the nuances of the HyperOS shell and older versions of MIUI. You will learn not only to change the actions of the buttons, but also to create your own automation scenarios.
It’s important to understand that customization options are directly dependent on the operating system version and model of your gadget. The flagship Xiaomi 13 or Xiaomi 14 series may have more hidden settings than the budget models of the Redmi Note series.
Built-in MIUI and HyperOS capabilities
Before you use third-party software, you should study the standard settings of your device in detail. Xiaomi engineers have provided basic functionality to change the actions of physical keys. These settings are usually hidden in the section associated with additional features or special features, accessed through the main menu of parameters.
Most often, users want to change the action of double-pressing the lock button. By default, it often opens the camera app or voice recorder. To check or change this, go to Settings → Additional Features → Buttons and gestures. Here you can choose which application will be launched when a certain impact on the body.
It's worth noting that the menu logic might have changed a little in the HyperOS shell, so if you don't find the right item along the specified path, search by settings, querying "buttons" or "gestures." The system will tell you the actual menu location for your firmware version. This is especially true for global firmware versions, which may differ from Chinese ones.
Not all models support full reassignment, for example, on some POCO series devices, functionality may be reduced to suit system performance, in which case standard tools allow you to turn certain actions on or off, but not replace them with other applications.
Using macro applications for flexible customization
If standard tools are not enough, specialized tools from Google Play come to the rescue. Macros applications allow you to create complex chains of action. One of the most popular solutions is MacroDroid or Button Mapper. They require certain permissions to intercept clicks, but do not require superuser rights (Root).
Once you install this app, you need to give it access to special features, and without that permission, it won't be able to "see" physical keystrokes when the screen is off or locked, and the setup process usually takes only a couple of minutes and is intuitive.
Creating a new macro is like this: you choose a trigger (like “Long pressing up the volume button”) and an action (like “Start Telegram” or “Enable flashlight”). You can create an unlimited number of profiles for different situations.
- 📱 Button Mapper – a classic solution that allows you to reassign single, double and long presses.
- 🤖 MacroDroid is a powerful tool for creating complex scenarios with conditions (for example, turn on music only in headphones).
- ⚙️ Tasker is a professional automation combine for advanced users, which takes time to learn.
⚠️ Note: Button reassignment apps may consume extra battery power as they constantly monitor the status of the keys in the background.
Setting up the side button and fingerprint scanner
Many modern Xiaomi smartphones feature a combined on button and fingerprint scanner, which creates limitations but also opens up new possibilities. In the security settings, you can find the “Fast Access” option, which allows you to run applications when you unlock a certain finger.
To implement this feature, you need to go to Settings → Passwords & Security → Unlock fingerprint. There, select Quick Access and assign a finger (like your right thumb) to run a particular application. This works even if the phone is locked.
This is ideal for running banking apps or instant messengers, but remember that this action is tied to the unlocking process, not just pressing a button in an unlocked state, an important nuance that is often overlooked.
Owners of the Black Shark or RedMagic series of gaming smartphones (based on MIUI) can have additional physical triggers, and their setting is made through a separate gaming application pre-installed in the system, where you can assign any actions for shoulder buttons.
☑️ Checking the settings of the power button
Advanced reassignment through ADB
For users who want full control of the system and are not afraid of the command line, there is a method using Android Debug Bridge (ADB). This method allows you to change the system configuration files without obtaining Root rights, which saves the warranty on the device. USB-cable.
First, you need to turn on USB debugging mode. To do this, go to Settings → About Phone and quickly click on the build number seven times until you see the message “You became a developer.” Then activate the USB debugging slider in the Advanced Settings menu.
Connect the phone to your computer and run the command prompt with administrator permissions. To reassign the buttons, a command is often used that changes the behavior of the navigation keys or physical buttons through system properties. Example of a command to change the action of the home button (if it is physical):
adb shell settings put secure sysui_keyguard_long_press_action 1However, physical volume and power buttons often require changing the kl/ (key layout) file, which is extremely difficult to do on modern versions of Android without Root rights, so through ADB, it is often the software navigation buttons that are set up or ADB is used to install special modified modules if the device is unlocked.
⚠️ Attention: Incorrect use of commands ADB This can cause system instability or loss of access to the settings menu. Always check the syntax before entering.
Comparison of button setting methods
The choice of method depends on your goals and level of training. Embedded tools are safe but limited. Third-party applications are flexible but consume resources. ADB provides deep access but requires technical knowledge. Let's compare the main characteristics of each approach.
The table below outlines key differences that will help you decide on the best reassignment method for your use case.
| Method | Difficulty | Security | Flexibility |
|---|---|---|---|
| System settings | Low. | Tall. | Low. |
| Annexes (MacroDroid) | Medium | Medium | Tall. |
| ADB team | Tall. | Medium | Very high. |
| Root rights | Very high. | Low. | Maximum |
If you just want a double-click camera, you'll have enough system settings. If you want a long-press volume recorder to be turned on in any application, you'll need macros. ADB will do the big interface changes.
Risks of using Root rights
Frequent problems and their solution
During the setup process, users may find that the assigned actions are not performed or are performed with a delay, often due to aggressive energy savings in MIUI. The system can “kill” the background process of the macros application, considering it to be an unnecessary consumer.
To avoid this, find the reassignment app installed in the app list, click on “Saving Charge” and select “No Limits.” It is also advisable to lock the app in memory (lock in the menu of recent apps), although this does not always work effectively on newer versions of Android.
Another problem is conflicts with other apps, so if you have multiple programs that control buttons, they can interfere with each other, leave only one active key management app, and check if In-Pack mode is on, which blocks some actions.
- 🔋 Energy savings are the main reason why macros stop working after a reboot.
- 🔄 Conflicts – Having multiple button managers causes unpredictable behavior.
- 📱 Device model – on some global firmware, functions can be cut out by the manufacturer.
A unique feature of MIUI 14 and HyperOS: in these versions, the mechanism of the background processes has been changed, so for stable operation of macros, you must manually allow the application to auto-run in the Security menu.
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If you use Bluetooth headphones, check their settings separately. Often, the actions of the buttons on the headset can only be reassigned through the headphone manufacturer's special application, not through the phone's settings.
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The most stable way to reassign buttons to Xiaomi without losing warranty and complex setup is to use the System Settings + One Light Macros App with customized battery exceptions bundle.