How to Calibrate the Screen on Xiaomi Redmi 4X

The Redmi 4X, released in 2017, is still popular due to its reliability and autonomy, but over time, owners may face color distortion. The display may begin to turn yellow, blue or show an incorrect reaction to touch, which significantly reduces the comfort of using the device. The problem often lies not in the physical breakdown of the matrix, but in a software failure or miscalibration settings, which are easy to fix yourself.

In this article, we will discuss in detail how to calibrate the screen on Xiaomi Redmi 4X, returning it to factory color accuracy and sensor responsiveness. You will learn about standard methods of setting through engineering menus and hidden service codes that do not require root rights.

Diagnostics of problems with the Redmi 4X display

Before taking action to change the display parameters, it is necessary to clearly define the nature of the malfunction. Often users confuse the software calibration failure with the physical burnout of pixels or damage to the plume. If the screen appears to be stripes, broken pixels or areas with missing glow, the software calibration will be useless and hardware repairs will be necessary. However, if the colors become dull, unnatural or the sensor begins to walk, the situation is corrected.

Pay attention to the lighting conditions you use your phone. The automatic brightness adjustment in the Xiaomi Redmi 4X sometimes doesn't work properly due to contamination of the light sensor. Wipe the top of the screen over the speaker. If the problem persists at maximum brightness and a clean sensor, then it's time to intervene in the color reproduction settings.

⚠️ Warning: Don't confuse the standard night vision mode with a screen malfunction. Check if you have a yellow filter in the notification curtain before you climb into the engineering menus.

For initial diagnostics, you can use a built-in hardware test to help you cut down application conflict, so if the test shows stable performance but you don't like the visual image, you'll need to manually adjust the scale.

Using the CIT Engineering Menu for Testing

The most reliable way to check and initially configure the display is to use the built-in CIT (Customer Integration Test) menu, which is designed for factory testers, but is also available to ordinary users. To enter the menu, you need to type a special code in the Phone app. Enter the combination ##6484##. If the code does not work, try the alternative ##4636##, although the former is more likely for MIUI.

When you open the menu, you'll see a list of all the components of the smartphone. We're interested in the item associated with the display, usually called Display or Screen. In some versions of the MIUI firmware for Redmi 4X, this section may be hidden or called differently, for example, Version -> Hardware Version. Inside you will find color check tests (Red, Green, Blue) that will help you visually assess the uniformity of the backlight.

It's important to understand that the engineering menu is primarily diagnosing, not always allowing you to change the parameters on the fly, but this is where you can see if the system sees the display correctly, and if the colors are not displayed correctly in tests even in diagnostic mode, this confirms the need to reset or reconfigure the drivers.

Customize color reproduction through hidden codes

For direct color calibration, Xiaomi smartphones often use codes that allow access to color temperature settings. One of these codes is ##3646633## (Engineer Mode). Once in this menu, go to the Hardware Testing tab, then select Display and then Color. Here you can see the sliders adjusting the red, green and blue channels.

Be extremely careful when changing the values in this menu. Incorrect calibration can make the image unreadable or lead to permanent battery overruns due to improper backlighting. Write down the base values before making changes so that you can return to factory settings. In some versions of MIUI, access to these sliders can be blocked for ordinary users.

⚠️ Note: Changing the values in the Color engineering menu may cause the interface to be displayed incorrectly, +5 or -5) and check the results.

An alternative is to use Google Play calibration apps like Screen Balance or Color Calibration, which run on top of the system and don't require root rights, allowing you to overlay a color filter to compensate for the yellowness or blueness of the screen, a safe method that doesn't change the system files.

Calibration of the touch screen (Tachscrin)

Special attention is required to calibrate the sensor, especially if the Redmi 4X has begun to respond to latency touches or “phantomize.” For this purpose, there is a special section in the CIT engineering menu Touchpanel. Going to it, you will see instructions in English suggesting to swipe your finger along special lines or paint over certain areas of the screen.

The process of calibrating the sensor requires accuracy and a clean screen. Make sure that the display does not contain droplets of water, grease or protective film with damage that can interfere with the process. Follow the instructions on the screen: usually you need to circle the contours or press the specified points. If the sensor misses the pressing, the system will suggest repeat the procedure.

In some cases, when standard calibration does not help, users resort to resetting calibration data via a reset. ADB-A simpler method is to use code ##2664##, which triggers the touchscreen test. Pass all the steps of the test. If the sensor doesn't respond in the corners of the screen, there may be a problem with the physical deformation of the body or the plume.

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Before calibrating the sensor, be sure to remove the protective glass or film if they have thick edges or damage, as they can distort the accuracy of the setting.

Comparison of screen calibration methods

There are many ways to improve the image on the Redmi 4X, from the regular MIUI settings to deep system intervention, depending on your skills and the extent of the problem. Below is a table comparing the basic approaches to solving problems with the display.

For most users, a combination of standard settings and third-party applications is the best option. Interfering with system files through root rights is justified only if the screen has critical factory defects that cannot be fixed by software in other ways.

Remember that Redmi 4X fitted IPS-a matrix that initially has its own features of color reproduction, different from AMOLED-You don't expect it to have the perfect black depth that you would expect from more expensive models, but it's possible to get a nice, natural picture.

FAQ: Frequently Asked Questions

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The safest and most effective way for the average user is to use third-party calibration applications that do not make changes to the system, but only impose a corrective layer.