How to reduce the sensitivity of the sensor on Xiaomi Redmi 4X: step-by-step instructions

The Xiaomi Redmi 4X is one of the brand’s most popular budget smartphones, but even it is not without typical problems. One of them is the oversensitive touch screen, which leads to false positives when touching, random taps in your pockets or during a conversation. If your device reacts to the slightest touch, opens apps spontaneously or ignores intentional gestures, this article will help regain control.

The reasons for sensor hypersensitivity can be software (firmware failures, conflicting settings) and hardware ( plume damage, moisture infestation). We'll look at all possible solutions, from basic MIUI settings to deep calibration through the engineering menu. Importantly, some methods require unlocking the bootloader or root rights, which can affect the warranty.

Before setting up, make sure that the problem is not related to physical damage. Conduct a visual inspection of the screen for cracks, chips or bloating (especially if the phone fell or came into contact with liquid).

1. Disable gestures and casual touches in MIUI settings

The first thing to check is the system settings for touch processing. Redmi 4X has several options that can affect sensitivity:

• 📱 Disabling gestures: go to Settings → Additionally. → Gestures and deactivate all unnecessary combinations (e.g., Double tap to wake up or Swipe up for home screen").
• 👆 Mode "In the pocket": in Settings → Screen. → In your pocket mode, turn on this feature – it blocks random taps when the phone is closed.
• ⏱️ Delayed touch: in some versions MIUI There is an option Settings → Special facilities → Delayed touch (set the value of "long" or "average").

If these options aren’t in your firmware, upgrade to the latest version of MIUI via Settings → About Phone → System Update. The manufacturer regularly optimizes touch handling in new builds.

⚠️ Warning: After you turn off the Double-Tap to Wake Up gesture, you'll have to use the physical Power button to unlock.

2. Calibration of the sensor through the engineering menu

If the standard settings didn’t work, try recalibrating the sensor manually, and you need to log into Xiaomi’s engineering menu:

1. Open the phone app and enter the combination: ##6484###
2. Select the Touch Screen Test (touch screen test).
3. Press Calibration and follow the instructions on the screen (usually you need to alternately touch the crosses).
4. Once completed, restart the phone.

If the #6484## code doesn’t work, try the alternative:

• Install the MTK Engineering Mode app (available on Google Play).
• Start it, go to Hardware Testing → Touch Screen.
• Calibrate and save the settings.

⚠️ Warning: Do not change other options in the engineering menu without understanding their purpose. Incorrect settings can lead to a loss of sensitivity of the screen completely.

3. adjust sensitivity through ADB-team

For advanced users, there is a way to fine-tune the sensor through ADB (Android Debug Bridge), which requires connecting the phone to a PC and enabling debugging over USB.

First, activate the debugging:

1. Go to Settings → About Phone and 7 times click on the MIUI Version to unlock Developer Mode.
2. Return to Settings → Additional → For developers and enable USB debugging.
3. Connect Redmi 4X to your computer and confirm your trusted device.

Now run commands in the ADB terminal (install Platform Tools in advance):

adb shell


su




echo 1 > /sys/touchscreen/sensitivity_level # Reduces sensitivity (values from 0 to 3)




exit




exit

If the command doesn't work, your sensor doesn't support software adjustment, and then only the modified core firmware will help.

4. Installation of a custom core or firmware

If all previous methods failed, the radical solution is to run a custom core firmware with sensitivity control, and the following options are suitable for Redmi 4X (codename santoni):

Installation process:

1. Unlock the bootloader through the Mi Unlock Tool (you will have to wait 72 hours after the account is attached).
2. Install a custom TWRP recavator for santoni.
3. Make a backup of the current firmware in TWRP.
4. Sweep through the selected firmware or core.

⚠️ Warning: Incorrect firmware can lead to a "brick" (completely inoperable) of the device. If you are not sure about your actions, contact a specialist.

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Before you run your firmware, check the kernel compatibility with your version of MIUI. For example, the cores for MIUI 10 may not work on MIUI 12 due to changes in drivers.

5. Hardware causes and their elimination

If the software methods did not help, the problem may lie in physical damage:

• 🔧 Discarded plume: When falls or impacts, the contacts of the sensor plume may move away from the motherboard. The solution is disassembly and reconnection (experience is required).
• 💧 Moisture: Even after drying, the oxidation of the contacts can cause false positives, you need to clean with alcohol or replace the plume.
• 🔋 Failed battery: the bloated battery presses on the screen, distorting sensor signals. Check the back cover for bloating.

For diagnosis:

1. Remove the back cover (on the Redmi 4X it is removable, but requires a plastic shoulder blade).
2. Check the sensor plume for damage or contamination.
3. If there is a bloating battery, replace it immediately (the risk of fire!).

Cost of repair in the service center:

• Replacement of sensor plume: ~1 500–2 500 ₽.
• Cleaning for oxidation: ~1 000 ₽.
• Battery replacement: ~1 200–1 800 ₽.

6. Alternative solutions: protective films and covers

If you can not reduce the sensitivity of the software, but the device is serviceable, try mechanical methods:

• 🛡️ Matte protective film: reduces finger slip, reducing the number of accidental touches. Recommended thickness - 0.3 mm.
• 📱 High-sided case: prevents touching the screen in your pocket (such as Spigen or Ringke models).
• 🔄 Stylus use: If the sensor only responds to a strong push, a soft-tipped stylus may be a temporary solution.

It's also worth trying to turn off vibration when you touch in Settings → Sound and vibration → Vibration when you touch. Sometimes the vibration response creates the illusion of false pressing.

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If the sensor only responds to wet fingers, the problem may be that the screen protector is damaged, and only replacing the display module will help.

FAQ: Frequent questions about sensor sensitivity