How to turn off the button on the back of Xiaomi

Owners of Xiaomi gaming smartphones, such as the Black Shark series or Redmi K Gaming Edition, often face the need to change the configuration of physical buttons. These controls, located on the side edges or back, are designed to improve the gaming experience, but in everyday use they can cause discomfort.

Not all models can completely disable these keys without superuser rights, but there are a number of effective methods to minimize their impact on the system. In this article, we will look at the standard tools of the MIUI and HyperOS shell, as well as advanced ways to manage hardware buttons, you will learn how to reconfigure their functions or completely block unwanted actions.

Before you start setting up, it's important to understand that some game models don't structurally allow you to completely ignore the signal from the physical button at the kernel level without special utilities. However, properly configuring the software triggers allows you to reduce the probability of accidental activation to zero, and we will analyze all the options available, from simple menu switches to the use of debugging commands.

Identify the type of buttons on your device

The first step should always be to accurately identify the hardware of your smartphone. In the Xiaomi ecosystem, “back buttons” often mean ultrasonic triggers located on the side faces, but activated by pressing on certain areas of the case. Less commonly, models with mechanical switches built directly into the back cover. Understanding the type of mechanism dictates the choice of method of disabling it.

If you're talking about a mechanical button, it's a click-through, it's a smooth stroke. Ultrasonic triggers respond to your finger pressure and don't have moving parts in the traditional sense. Black Shark's gaming lineups are characterized by ultrasonic sensors that require calibration or software locking through the Game Center system app.

Regular Redmi or POCO smartphones don’t usually have additional buttons on the body unless it’s a specific modification, and in such cases, users may mistakenly accept a fingerprint scanner that is paired with a lock button, or software controls, and it’s important not to confuse the physical element with a virtual function.

⚠️ Attention: Attempting to physically seal or block mechanical buttons with foreign objects may damage the plume or body of the device.

Set up game triggers through Game Center

The main tool for managing additional input elements is the built-in Game Center (or Game Turbo) application, which is where all the necessary switches for activating and deactivating game functions are concentrated. To access the settings, you need to launch the application, go to the control section of a particular device or a general peripheral profile.

In the trigger settings interface, you'll find sliders that are sensitive and operating. To effectively disable the button, just turn the corresponding switch to off or reduce the sensitivity to minimal values. MIUI allows you to save profiles for different games, which gives you flexibility: buttons can work in shooters and be turned off in instant messengers.

Sometimes you have to recalibrate your sensors if they don't respond properly even when they're off, and you have a trigger menu that resets the settings to factory values. After you reset, you have to retrain your sensors, but when you set up, just don't assign any commands to the problem areas.

It’s worth noting that some system updates can change menu layouts or item names. If you don’t find the right switch right away, search the app or go to Help. The relevance of the Game Center version also plays a role: older versions may not support new sensor models.

Blocking through "Do Not Disturb" mode and profiles

An alternative, though less specific, way is to use system profiles. Do Not Disturb mode in some firmware versions may limit the system's response to certain hardware interrupts, although it primarily blocks notifications and sound. This is useful if the button causes vibration or audible signal when accidentally touched.

You can create a special profile for sleep or work, which will turn off all secondary input functions. To do this, go to Settings → Sound and vibration → Do not disturb. Here you can set a profile activation schedule so that it will be activated automatically at the right time, preventing accidental screen awakening or application launch.

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Use script automation to enable the Do Not Disturb profile to be turned on when connecting to home Wi-Fi, which will also reduce sensitivity to casual touch in a quiet environment.

In addition, the Special Options section often features a button lock feature, designed for children or people with limited motor skills, but great for our task, and activating this feature blocks all buttons except the power button, which is a radical but effective solution to prevent any accidental pressing while carrying in the bag.

Using ADB for Deep Deactivation

For advanced users who don’t have enough standard settings, there is a method to turn off buttons via the ADB (Android Debug Bridge) debugging bridge, which allows you to interfere with the system services responsible for handling hardware interrupts, which requires connecting the smartphone to the computer and having drivers installed.

Before you start, you need to activate the developer mode. Go to Settings → About the phone and quickly press 7 times on the MIUI build number. Then, in the Developer menu that appears, turn on USB debugging. Connect the phone to your PC and start the command line.

adb shell settings put secure ignore_touch_when_covered 1

While designed for in-pocket mode, this command can affect touch processing from side sensors in some custom builds. More specific commands depend on the device model and the keycode. For example, utilities like Button Mapper in conjunction with ADB can be used to block a specific keycode if system constraints allow for the interception of an event.

It is important to understand that there is no universal command to “turn off the back button” because the event codes vary from sensor manufacturer to sensor, and you may need the getevent-l utility to determine the exact code that the problem button generates, and then block it.

Sticking problems and physical maintenance

If software methods don't work, there's a high probability of physical malfunction. Dust, moisture, or small debris caught under a button or sensor can cause false positives. In the case of mechanical buttons on gaming smartphones, a common problem is wear of the membrane or the ingestion of a sweet liquid that, when dried, creates a sticky layer.

Try to press the trigger button or zone several times for diagnosis, if the feeling of "stick" persists, cleaning may be necessary. Use compressed air to blow the gaps. Alcohol wipes can be used to wipe the external surfaces, but do not allow liquid to enter the housing.

In the case of ultrasonic sensors, sticking is often a software artifact or a consequence of a plume being damaged. If the phone fell, the contact could be disrupted. In this situation, software shutdown is the only temporary solution before a service center visit. Ignoring the problem can lead to accelerated battery discharge, as the processor will constantly process interruptions.

⚠️ Warning: Disassembling your smartphone to clean buttons is self-deprived.If the device is warranty service, contact your Xiaomi Authorized Center.

Reassign functions instead of disabling

Rather than turning off the button completely, often a more rational solution is to reassign its function to a less critical action, such as setting the button so that it doesn't perform any action on the system, but only activates within a particular application, which allows you to preserve the functionality for games by removing the stimulus at the rest of the time.

Automation applications like MacroDroid or Tasker allow you to create complex scenarios. You can set a rule: "If you press the volume button (or trigger) and the screen is off, do nothing." This effectively blocks the phone from waking up or the voice recorder from starting when you accidentally touch it in your pocket.

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Reassigning the button function to the action of Nothing in a particular context (e.g., outside the game) is often more effective than attempting to completely disable the hardware interrupt.

It’s also worth considering using third-party launchers or game modes that intercept input control. Some game shells have their own input layer that ignores system commands from buttons when the game is running in normal mode rather than in Game Turbo mode.

Frequently Asked Questions (FAQ)