The question of which display is installed on the popular Xiaomi Redmi Note 9 Pro, worries many users who are planning to replace the glass or just interested in the technical details of their device. The smartphone hit the market with a screen that has become a trade-off between cost and quality, but confusion about specifications often leads to misconceptions. AMOLED-The reality dictates the harsh specifications of the budget segment of the time.
Understanding the type of matrix is critical not only for enthusiasts, but also for those who are faced with a breakdown and looking for parts. IPS LCD technology used in this model has its own features of color reproduction and power consumption, which distinguish it from its counterparts. In this article, we will discuss in detail what exactly is hidden under the protective glass of your gadget.
You can independently diagnose, learn the exact model of the display module and understand whether to expect from this screen “deep black” color or high contrast, characteristic of the display module. OLED-We'll take a look at all the nuances to give you a complete picture.
Technical characteristics of the screen Redmi Note 9 Pro
The smartphone display occupies a significant part of the front panel, providing immersion in content. The diagonal is 6.67 inches, which is the standard for modern "scapula". The matrix resolution is 2400×1080 pixels, which gives a pixel density of about 395 ppi. This value provides a fairly clear picture in which individual points are not noticeable in normal use.
The refresh rate of the image in this model is limited to 60 Hz. Unlike newer versions or Pro versions with the prefix "S", there is no support for 90 or 120 hertz. LCD-It's a medium-sized panel, which can reach 450 nits in manual mode and up to 650 nits when you activate automatic adjustment, and it's protected by Corning Gorilla Glass 5, which does a good job of scratching, but still requires precision.
An important aspect is the availability of HDR10 support, which allows the device to correctly display the extended dynamic range in video content, although the brightness margin still limits this effect compared to flagships. Color coverage covers a significant part of the sRGB space, but does not reach the full extent of DCI-P3, which is typical for entry-level IPS.
Type of matrix: IPS LCD vs. AMOLED myths
The most common myth is that the Redmi Note 9 Pro has AMOLED. It's not. It has a classic IPS LCD panel. In-Plane Switching (IPS) technology uses backlights that burn constantly, forming images through liquid crystals. This is fundamentally different from AMOLED, where each pixel glows independently.
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You can check the type of matrix by turning on the all-black picture in a dark room. On IPS you will see a light glow ("lights"), and on AMOLED the screen will be completely black, since the pixels are turned off.
Absence AMOLED This means that the Always On Display function is limited or emulated software, consuming more power than the screen. OLED-And the black color on the screens. IPS It looks more like a dark gray, especially when viewed from an angle or in bright light.
⚠️ WARNING: When buying a spare display in markets or parts stores, beware of sellers claiming to sell the “original” display. AMOLED" It's a marketing ploy. The factory equipment only provides for this. IPS.
The advantage of the IPS array is that it doesn't flicker at low brightnesses, which protects the eyes of sensitive users. While cheap AMOLED screens can cause fatigue, IPS backlighting is stable. However, the viewing angles are worse than those of the top OLEDs, and when viewed from the side, you can experience color inversion or loss of saturation.
How to find out the display model through the engineering menu
For those who want to know the exact model of the installed module, there is a way through system codes. This will help to determine the manufacturer of the panel (for example, Tianma, Boe or CSOT), since Xiaomi often uses components from different suppliers in the same model.
To access diagnostic information, you need to open the Phone app and enter a special code. Type ##6484## in the dial box. The device will automatically go to CIT (Customer Information Test) mode. This is a hidden section for engineers.
☑️ Check through CIT menu
In the menu that opens, find the item associated with the display (usually called Display or Screen). By clicking on it, you will be taken to screen testing, where often in the corner or in the version menu (the Version button), the code of the panel you are using, you can also try the code # #4636#, go to Phone Information and look for information about the graphics adapter, although there is less detailed information.
If the codes don't work (newer versions of MIUI may block them), use third-party utilities. Applications like Device Info HW or AIDA64 can often read display IDs through system files. Look for a "Panel" or "Driver" line that will indicate an identifier, such as nt36672c or the like.
Checking for broken pixels and lights
IPS screen owners are familiar with artifacts such as "clouding" and "hosting" (residual image). Because the backlight in the Redmi Note 9 Pro is located on the edges or evenly distributed, uneven light distribution is common.
To check, turn on the all-white image at maximum brightness in the dark. Pay attention to the corners and center of the screen. Grey spots or iridescent stains indicate an uneven pressing of the matrix against the frame or a defect in the panel itself. This is not always a marriage, often this is a feature of the assembly of budget IPS modules.
| Type of defect | It looks like | Criticism |
|---|---|---|
| A broken pixel | A point that does not change color (black or color) | High (if in the center) |
| The Light (Clouding) | Bright spots on a black background | Medium (depending on brightness) |
| Gosting | Trace of the previous image | Low (passes over time) |
| Puppies. | Rainbow stripes when touched | Medium (indication of pressure) |
It’s also worth checking the screen for dead pixels that don’t light up at all, using online tests that run away (solid colors): red, green, blue, white and black. On a black background, broken pixels will glow, on a white one – black.
Can a broken pixel be cured?
Comparison with Redmi Note 9 Pro Max and S
Often users confuse the regular Pro, the Max version and the updated S version. It is important to understand the differences, as they affect the choice of cases, glasses and expectations of picture quality. All three models use IPS technology, but diagonals and resolution may differ.
The Redmi Note 9 Pro Max, available mainly in the Indian market, has an identical 6.67-inch FullHD+ screen. The differences lie in the camera module and fast charging support, but the display module is interchangeable 99% of the time, making it easier to find parts during repairs.
The Redmi Note 9S is the global equivalent of China’s Redmi Note 9 Pro (without the Max console).It also has an IPS panel with the same specs. However, the newer Redmi Note 9 Pro 5G (Chinese version with a Snapdragon 750G processor) already uses a 120Hz LCD screen. Be careful when looking for information: if it’s a 4G version (Snapdragon 720G), it’s always 60Hz.
⚠️ Note: Do not attempt to install the display from 5G version 4G Despite the similarity, the plumes and controllers may differ, which will result in the inoperability of the touchscreen or complete inoperability of the module.
Color adjustment and calibration in MIUI
Because IPS arrays often have a cold hue from the factory, Xiaomi provides correction tools that make the colors warmer or more saturated, bringing them closer to the user's preferences.
To access the settings, go to Settings → Screen → Colors and saturation. There are several profiles available: "Standard", "Saturated", "Warm" and "User" and "Standard" or slightly warm "Warm" are recommended for everyday use, as they are less eye-wasting.
Settings → Screen → Reading Paper (on) → SettingsAlso worth mentioning is Reading Mode, which adds a yellow filter that mimics electronic paper, which is useful for reading text, but distorts colors when you view photos, and on IPS screens, this mode hides the shortcomings of color reproduction, making white less bright.
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For maximum autonomy, use a dark theme, but remember: on an IPS screen, this does not save battery power as effectively as on AMOLED, since the backlight is running constantly.