How to find out which screen on Xiaomi Redmi: complete diagnostic methods

Owners of Xiaomi and Redmi smartphones often face the need to accurately determine the characteristics of their device, in particular, the display is one of the most important and expensive components, on which the quality of the image, color reproduction and comfort of use of the gadget depends.

Complicating matters, the same smartphone model can be used to install matrixes from different vendors, a standard practice for optimizing production chains, but it means that two identical phones can have different brightnesses or refresh rates.

Find out which panel is installed on your device in a number of ways, from installing specialized applications to using hidden system codes. In this article, we will discuss each method in detail so that you can get full information about the hardware of your smartphone.

Use of system settings and MIUI codes

The fastest way to get primary information about the display is to access the built-in features of the MIUI or HyperOS operating system. Basic data is often hidden in the About Phone menu, but special engineering codes exist for deeper diagnosis.

Try typing in the ringer with the command ##6484##. This code opens the CIT (Customer Integration Test) engineering menu, where you can find the tools to check all the components of the smartphone, and here you can find tests that display the current resolution and color reproduction parameters.

Also useful is the code ##4636##, which displays the test menu. Although it is more commonly used to check networks, some firmware versions contain information about the connected display interfaces. GPU.

⚠️ Warning: Be careful when changing the settings in the engineering menu.Resetting or changing the calibration parameters without understanding the process can lead to incorrect sensor or color rendering.

It is important to understand that standard menus often only show general characteristics, such as resolution. 2400×1080, but do not specify the specific manufacturer of the matrix.To obtain detailed information about the supplier (e.g. Samsung, BOE Tianma will require more advanced methods.

Applications for detailed screen diagnostics

The most reliable way to learn the model of the installed display is using specialized utilities from Google Play, which read data directly from system files and drivers, providing a complete picture of the iron component.

One of the most popular tools is the Device Info HW app. It specializes in gathering information about components that don’t appear in standard Android settings. After launching the app, go to the Screen tab (Display), where you will see not only resolution, but also pixel density (PPI).

Another powerful tool is AIDA64, which is a cross-platform utility that generates a detailed report on the system, and in the Display section you can find information about the current refresh rate (hertzovka) and color space.

💡

Applications like Device Info HW read data from system logs, so they show real information downloaded by the driver, rather than marketing specifications out of the box.

Also worth mentioning is the CPU-Z utility. Although it is better known for CPU analysis, the Device tab often contains a line with the display model ID. This is especially useful if you want to compare the claimed specs with actual Hertz counts.

Log analysis via ADB and computer

For advanced users who don’t want to install unnecessary applications or require maximum accuracy, the ideal option is to use the ADB debugging bridge (Android Debug Bridge), which allows you to access system logs, where the process of initializing the display when booting.

To get started, you need to turn on the developer mode on your phone. Go to Settings → About Phone and quickly click on the MIUI version seven times. Then activate the “Debugging by USB” option in the extended menu.

Connect your smartphone to your computer through USB-Open the command line on your PC and type a command to read the event buffer log:

adb logcat -b events | grep -i display

In the data stream that will start to appear on the screen, look for lines containing the words panel, vendor or manufacturer names (Samsung, BOE, Tianma), which will indicate the specific matrix model installed on your Redmi.

⚠️ Attention: When working with ADB Make sure your computer has the right drivers for your device. Lack of drivers can cause your computer to fail to see the smartphone in debugging mode.

Using logs allows you to see which driver has loaded, especially for models where different suppliers of components can meet in the same batch, and the log will show the exact identifier that can be broken into databases.

Visual diagnostics and tests for broken pixels

Sometimes software methods don’t give a complete picture of the screen quality and visual inspection is required, which is especially important when buying a used device or if you suspect defects that aren’t displayed in the specifications.

There are many online services and YouTube videos that help you identify broken pixels, lights or uneven backlights. Run solid white, black, red, green and blue on the full screen.

When you look at black in a dark room, you can see the contrast quality and the presence of flashlights (uneven lighting at the edges). If you see light spots on a black background, this may indicate build features or a matrix defect.

💡

For the most accurate visual check, use static images of pure colors rather than video, as video players can apply dynamic color correction to hide defects.

Also, pay attention to the angles of view. If the color is strongly distorted or inverted when viewed from an angle, this may indicate the use of the IPS-lower class matrices or even TN-panels, which for modern Redmi is rare, but possible in budget models.

Comparative table of display characteristics

Understanding technical terms will help you better navigate the data you’ve gathered, and below is a table that explains the key parameters to look out for when diagnosing your smartphone screen.

Knowing these parameters, you can match the data from the diagnostic applications with the official model specifications, and if the actual numbers are very different from the ones reported, it's a good idea to think about replacing the display or using the service.

For example, if the specification states 90Hz and the app shows a stable 60Hz, it is possible that the settings have activated a power saving mode that limits the refresh rate. Check the settings at Settings → Screen → Update frequency.

Frequent questions and problems of model definition

Users often wonder why different sources indicate different information about the screen of the same model, which is related to Xiaomi’s global logistics. The company can purchase millions of panels from different factories, and depending on the date of production and the region of sales, the case of the Redmi Note or Poco can get a matrix from Samsung, BOE or Tianma.

Another common problem is that you can't determine the exact model after flashing the device. ROM), Drivers can operate in a universal mode, hiding the exact name of the vendor. ADB-logs when loading the stock system.

⚠️ Warning: Don't blindly trust apps that promise to "improve" the screen or change its frequency programmatically.

If you're planning to replace a screen, knowing the exact matrix model is critical. Even within the same model range, plumes and connectors may differ. Always check the labeling on the new display plume against the diagnostic data.

Conclusion

Determining the type and model of the screen on Xiaomi Redmi smartphones is a solvable task, if you know the right tools. Start with simple methods like system codes and applications from the Play Market. If you need deep analysis, use ADB and system logs.

Remember, having a matrix from a particular manufacturer doesn't always guarantee better quality, it's more about subjective perception, color calibration, and no defects, and checking the condition of the display regularly will help you notice problems and prolong the life of your gadget.