How to align the screen on Xiaomi Redmi 9: calibration of the sensor, colors and autoturn

Xiaomi Redmi 9 is one of the most popular budget smartphones, but even it is not immune to screen problems. Users often experience sensors that react inaccurately, colors look unnatural, and the image “moves” when you turn the device, and 80% of these problems are solved by software calibration that does not require parsing the phone.

In this article, we will discuss three key aspects of screen alignment: touch-sensitive adjustment (if clicks are not where you are touching), color correction (when brighter or brighter, colder/warmer), and gyro calibration (if autorotation is malfunctioning), and you will know when the problem is hardware-related and requires the intervention of a service center.

All instructions are tested on Redmi 9 with MIUI 12-14 firmware (including global and European versions).If your phone runs on custom firmware (like LineageOS or Pixel Experience), some menu items may differ.

1. Diagnostics of the problem: hardware defect or software failure?

Before settings, it is important to identify the source of the problem: software failures are fixed in 5-10 minutes, and hardware requires replacement of parts.

• 🔍 Sensor doesn't respond to touch or clicks in the wrong place: try using a phone with a different charge (sometimes interference from the power supply affects the screen). If the problem persists, go to the sensor calibration section.
• 🎨 Colors look dull, greenish or reddish: check the screen settings in Settings → Display: If adjusting the brightness and color temperature doesn't help, the problem is the matrix or the plume.
• 🔄 The autopivot is delayed or turns the image in the wrong direction: test the gyroscope using the Sensor Test app (available on Google Play). If the sensor readings "jump" - you need to recalibrate.

A critical sign of hardware failure is the appearance of vertical or horizontal stripes on the screen when you press the case, which indicates damage to the plume or matrix, and self-repair is impossible here.

⚠️ Note: If the Redmi 9 screen is cracked or shows physical damage (dents, chips), any attempts at software calibration are useless.

2. Touch screen calibration: eliminate click bias

If the Redmi 9 sensor is late or registers touches at the wrong point where you touch, the problem is calibration, which often happens after drops, firmware updates, or resets.

For calibration, use the hidden engineering menu:

1. Open the phone app and enter the combination: ##6484###
2. Select the Touch Panel Test (touch panel test).
3. Follow the instructions on the screen: touch the center of the targets, which will appear in different corners of the display.
4. After the test is completed, restart the phone.

If the engineering menu is not available (for example, on some custom firmware), use third-party applications:

• 📱 Touchscreen Calibration (from Google Play) – automatically adjusts the coordinate shift.
• 🛠️ MTK Engineering Mode – for MediaTek processor devices (suitable for Redmi 9 with Helio chipset) G80).

Turn off the cover and the safety glass |

Charge your phone at least 50% |

Make sure your hands are dry |

Do not interrupt the calibration process-->

⚠️ Note: After calibrating the sensor through the engineering menu, do not install touchscreen “improvement” apps (such as Touch Booster.

3. Color rendering adjustment: eliminate greenish or reddish hue

Redmi 9 screen uses the same screen. IPS-It's a matrix that supports Sunlight Display and Reading Mode, but sometimes the colors look unnatural because of incorrect settings or a graphics driver failure.

For manual correction:

1. Go to Settings → Display → Color scheme.
2. Select Standard (for natural colors) or Saturated (for a brighter picture).
3. Turn off Automatic Color Temperature and manually set the slider to 4500–5000K (neutral white).
4. Activate Reading Mode for Reading Only – Constant use of this mode distorts colors.

If the settings don't help, the problem may be in the display driver. Update the firmware through Settings → About the phone → Update the system or reset the screen settings:

adb shell settings put system screen_color_mode 0

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If the colors have become unnatural after the firmware update, try rolling back to the previous version of MIUI via Fastboot.Search the 4PDA forum for rollback instructions in your model's theme.

Calibration of the gyroscope and accelerometer: correcting autorotation failures

If the Redmi 9 screen turns on its own or reacts to late turns, the problem is with the orientation sensors, the gyroscope and accelerometer, which can be disrupted by falls, magnetic interference or resetting.

For calibration:

1. Download the Sensor Test app from Google Play and check the gyroscope readings. If the values jump when the phone is stationary, the sensor needs to be recalibrated.
2. Enter the phone code ##64663## (sensor test)
3. Select Gyroscope Calibration and follow the instructions: Put your phone on a flat surface and wait for the process to complete.
4. Reset the device.

If the calibration didn’t help, check:

• 🧲 Magnetic interference: remove magnets, headphones with neodymium magnets, cases with metal inserts from the phone.
• 🔧 Settings of the autoturn: in Settings → Display. → Turn off the autoturn and turn on the function again.
• 📱 Application conflict: Some programs (such as Tasker or MacroDroid) can block sensors.

5. Hardware problems: when to change the screen

Not all Redmi 9 screen problems are software-solved, and if you've followed all the instructions above, but you're missing the result, it's probably a physical malfunction.

• 🔌 Train damage: manifests as vertical stripes, flickering or completely shutting down the screen.The plume can rub over time or damage when falling.
• 💥 Matrix cracks: Even if the glass is whole, the matrix’s inner layers can be damaged, resulting in color distortion or “broken” pixels.
• 🔋 Battery bloating: If the screen is "bubbling" or if it is hit by waves, it is a sign of the battery bloating, which presses on the display from the inside, in which case urgent battery replacement is required!

The cost of replacing the screen with Redmi 9 in 2026:

⚠️ Note: If new problems appear in the informal service after the screen change (for example, the sensor does not work or colors are distorted), a non-original module was probably installed. Xiaomi uses screens with individual calibration, and cheap analogues may not fit the parameters.

6.Prevention: How to Avoid Screen Problems in the Future

To make the Redmi 9 screen last longer without crashes, follow the simple rules:

• 🛡️ Use high-quality protective glass (at least 0.3 mm thick) and a cover with shock absorbing corners.
• 🔋 Do not allow a discharge below 10% – this increases the load on the power controller, which can affect the performance of the screen.
• 🧲 Avoid magnetic fields: Do not place your phone near speakers, induction charges, or powerful magnets.
• 🌡️ Do not overheat the device: long games or charging in direct sunlight can cause the plume to detach.

Regularly (every 2-3 months) perform preventive calibration of the sensor and gyroscope through the engineering menu, which will help to avoid the accumulation of errors in the operation of the sensors.

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Even minor drops in Redmi 9 can lead to microcracks in the matrix that will manifest over time. If the screen continues to work normally after the impact, check it in the service anyway - sometimes the damage is only noticeable under the microscope.

FAQ: Frequent questions about Redmi 9 screen alignment