Professional screen calibration Xiaomi Redmi 8

Many owners of budget smartphones often face a situation when the image on the display seems faded, too cold or, conversely, too yellow. The screen Xiaomi Redmi 8 is equipped with a high-quality IPS-matrix, but the factory settings of the color profile do not always correspond to the individual preferences of the user or the real colors of objects. Proper calibration can radically change the perception of content, making the picture more saturated and natural.

The setup process does not require expensive professional equipment, although it involves the use of specialized applications or hidden engineering menus. Competent adjustment of RGB and gamut parameters allows you to eliminate image artifacts that are often found in stock MIUI. In this article, we will discuss in detail the software and hardware methods for bringing the display to the ideal.

Now, you have to understand that factory calibration is often done with a warm tone bias to reduce eye strain, but it distorts the real colors. If you're a photo processor or you just want to get the clearest picture possible when you're watching a video, standard settings may not be enough. Next, we'll move on to step-by-step instructions to help you customize the display.

Basic Color Rendering Settings in MIUI

The first step should always be to check the standard features of the operating system. The Android-based MIUI shell provides basic functionality to change the color profile, which is often ignored by users. To access these options, go to the Settings menu → Screen → Color scheme.

Here you will be offered several modes of operation of the matrix. The mode "Saturated colors" makes the picture more vivid and contrasting, which most users like when watching media content. However, for accurate color reproduction, it is better to choose the mode "Standard colors" or "Paper" if you often read the text. The color temperature is also regulated by a slider, allowing you to shift the white balance towards warm or cold shades.

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Use the read-only mode as it severely restricts color coverage and makes the image monochrome or sepia-like.

Remember the autobrightness feature, which can affect color perception when lighting changes, and some users prefer to turn it off and adjust the backlight level manually for image stability, and the Read Mode option is often available in this section, which should only be activated when you are working with text for a long time.

Using an engineering menu to fine-tune

To get deeper into the display, there is an engineering menu available through a special code in the Phone app. Enter the combination ##6484## to get into CIT service mode. Here you can run pixel-broken matrix tests and gradient tests.

In some versions of firmware, you can access advanced display settings through the engineering menu, where you can adjust the gamut parameters. However, be careful: changing unknown parameters can lead to incorrect display of the interface. The main purpose of using this section is to diagnose the physical state of the screen before software calibration.

If you find a major problem in your testing, such as uneven lighting or bands, software calibration may not help, and then you're talking about a hardware malfunction that requires a module replacement. The engineering menu is a powerful diagnostic tool, but it's not a panacea for all visual defects.

Application of third-party calibration applications

When system tools are not enough, Google Play apps come to the rescue, allowing you to overlay a color filter over an image, and one of the most popular solutions is the Screen Balance app, or analogues that work on the principle of rebalancing red, green and blue channels.

The principle of these programs is to create a semitransparent layer of color over the main image, which compensates for the factory skew to one side of the spectrum. For example, if the screen goes blue, the application will add a yellow filter. It is important to note that these utilities often require root rights or special debugging modes to work properly.

• 📱 Screen Balance – allows you to fine-tune white balance and blue light levels.
• 🎨 Color Calibration – offers ready-made presets for various tasks (photos, videos, games).
• 👁️ Blue Light Filter – specializes in reducing harmful radiation, but can change color reproduction.

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Third-party applications do not change the physical matrix, but only impose a software filter, which can slightly reduce battery autonomy.

When using these applications, it is important not to overdo it. Overcorrection can lead to the appearance of "noise" or compression artifacts on gradients. The optimal solution is to find the "golden mean" when colors become pleasant to the eye but remain recognizable.

Configure permission and frequency of update

Although the Xiaomi Redmi 8 has a fixed physical resolution matrix, the system can be available to adjust the image scale or density of dots per inch (DPI).

To access hidden settings, go to Settings → About Phone → MIUI version and quickly press 7 times. Then, in the advanced settings, look for Smallest width. The standard value for this model is usually 360 or 392 dpi. Changing this value makes the interface elements larger or smaller, but does not change the physical resolution of the screen.

It is not recommended to set extreme DPI values, as this can lead to a “go” layout of some applications. the refresh rate on this model is fixed at 60 Hz, and it is impossible to programmatically increase it to 90 or 120 Hz without deep modification of the system core, which is not recommended for ordinary users.

Elimination of yellowness and illumination defects

One of the common budgetary problems IPS-The matrix is a kind of uneven lighting, or what's called the "yellow tint effect," where one of the corners of the screen is noticeably yellower than the rest of the surface.

To combat yellowness, use color temperature settings by shifting the slider toward Cold. If that doesn't work, use the calibration app to add a blue channel to the problem area, although it's difficult to change globally. It's also worth checking if Night Light is enabled, which automatically adds a yellow filter in the evening.

⚠️ Note: If the yellow spot has clear boundaries and does not change when the image changes, this may indicate physical damage to the matrix or plume, and not a software failure.

In some cases, resetting the screen to factory settings or completely flashing the device if the problem is caused by an error in the display drivers helps, but more often than not, uneven backlighting is a lottery factor in the production of panels.

Resetting and calibration of the sensor

Sometimes problems with displaying color or reacting to touch are solved by resetting the display settings. In the CIT engineering menu, there is a "Touchpanel" item that allows you to check and calibrate the touch layer. Incorrect touch screen operation can create the illusion of image problems (for example, spontaneous change in brightness).

You can use the Recovery menu to reset your graphics. Select Wipe Data, but remember that this will delete all data from your device. Make sure to back up important information before you do any resets.

Once you reset, the system will go back to the factory color profiles, and it's a good way to know if the distortion was caused by your previous experiments with the settings, and if the problem persists after the reset, it's hardware or deep-seated system settings.

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