Xiaomi’s modern smartphones are famous for their value for money, making them one of the most popular targets for the aftermarket. However, after falling or getting moisture, owners often face the need to replace broken glass or matrix. At this point, the critical question is how to find out the original display or not on Xiaomi, so as not to overpay for a low-quality copy. The market is oversaturated with modules of various quality classes, from factory defects to outright fakes that can spoil the experience of using the device.
Using a non-original component entails a number of problems, from the banal decrease in brightness and color reproduction to the complete failure of the touchscreen or the appearance of image artifacts. The original display undergoes strict quality control at the factory and fully matches the manufacturer's calibrations. In this article, we will discuss in detail the software and hardware verification methods that will help you avoid buying substandard parts and save money.
It is important to understand that visually distinguishing a quality copy (called "Hard OLED" or "In-cell") from the original can be extremely difficult even for an experienced wizard without special equipment. However, there are a number of indirect features and software tests that allow you to detect a fake with high probability. We will look at methods available to the average user without having to disassemble the phone or connect it to complex analyzers.
Visual diagnosis and tactile sensations
The first thing to look for when getting a new display module is its look off. Xiaomi uses high-quality glass with an oleophobic coating that gives the screen a deep black color when the device is off. Copies often have a grayish or bluish hue when turned off, which is especially noticeable when compared to another device of the same model. The frame around the matrix of the original is always perfectly smooth, without gaps and glue prots.
The tactile sensations of scrolling through the tape on the menu can also tell you about the quality of the component. AMOLED-The screens that are equipped with flagship models have a high frequency of sensor survey, which makes scrolling smooth and responsive. Cheap IPS-copy or low-quality OLED Often, they are guilty of delays, "twitched" images or insufficient sensitivity of the edges of the screen.
⚠️ Warning: If you notice that in bright lighting, the black color on the screen is displayed as a dark gray glow, you are almost certain to see it. IPS-copy AMOLED-The original. AMOLED It allows you to turn off individual pixels to display black, which can not be cheap matrixes.
Special attention should be paid to the quality of the module assembly. The plumes of the original parts have clear markings, smooth soldering and dense connectors. On copies, you can often find a careless sticker, a curved protective film on the plume or soldering marks where they should not be. When you install the module in the case, the original stands perfectly smoothly, without distortion, because the geometry of the frame is observed with an accuracy of a millimeter.
☑️ Visual inspection of the display
Checking through the engineering menu and codes
The most reliable way to program diagnostics is to use Xiaomi’s built-in engineering menu, which requires you to open the Phone app and enter a special combination of characters. The most common code to check all components is ##6484##. Once you enter this code, the CIT menu (Customer Information Test) will automatically open on the screen, where all the nodes of the smartphone are listed.
You need to find the item in the test list that's responsible for the display. Depending on the firmware version and device model, it can be called "Display", "Screen" or "LCD Test." Clicking on this item, you run a series of automatic checks. The system will consistently change the colors of the screen (red, green, blue, white, black), checking the uniformity of the glow and the absence of broken pixels. If the display is not original or has defects in connection with the board, the test may fail or give an error.
Another important parameter that can be checked in the engineering menu or through special applications like Device Info HW is the panel ID. The matrix manufacturer is often encoded in the system. The original Xiaomi displays are characterized by certain vendors such as Samsung, LG, Ebbg or Tianma. If you see an unknown name or field in the manufacturer's field, it is an alarm signal. You can also see the resolution and refresh rate, which must strictly correspond to the declared characteristics of your model.
What if the code doesn't work?
Image analysis: colors, brightness and viewing angles
Picture quality is what catches the eye first. Xiaomi's original displays calibrate in the factory to provide a natural color reproduction. Copies often sin with excessive color saturation, going to "acid" tones, or, conversely, with a faded image, especially on gradient screensavers: instead of smooth color transition, there can be stripes or stepping (banding).
Brightness is another critical parameter. AMOLED-screens are capable of producing high brightness (often higher) 1000 nit in spades for flagships, which allows you to read text comfortably in the sun. 300-400 And you can check this by taking your phone out into the bright sun or by pointing the light of the desk lamp directly at the screen at maximum brightness.
- 👁️ Viewing angles: Tin the phone at an angle 45-60 On the original. AMOLED The color may change slightly in color, but the image remains clear and contrasting. IPS-Copies of color may invert (become negative) or pale very much.
- 🌑 Depth of Black: In a dark room, open an all-black image. In the original, the black pixels must be turned off and merged with the phone frame.
- 📉 PWM-Modulation: Some users are sensitive to screen flickering. Original displays often use high-frequency PWM or DC Dimming, whereas copies can flicker at low frequencies, causing eye fatigue.
Also worth noting is the Always On Display feature, which works smoothly on the original panels, watches and notifications don’t eat pixels or create halos. On fakes, AOD is often either missing or works with artifacts, as it requires specific support from the display controller.
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To check color rendering accurately, use the "Gradient Test" or "Color Bars" test images that you can find online to help you identify broken areas and uneven backlights.
Technical specifications: frequency and resolution
Modern Xiaomi smartphones often feature screens with increased refresh rates of 90 Hz, 120 Hz and even 144 Hz. This ensures smooth interface animations. When installing a copy, even high-quality, the system may not recognize high-frequency support and limit the work of 60 Hz. Check the current frequency can be in the screen settings or through monitoring applications such as Display Tester or AIDA64.
The resolution of the matrix is another marker of originality. Flagship models have a resolution of FullHD+ or WQHD+. If you see standard HD+ (720p) in the system characteristics on a phone that should have a higher resolution, then there is a cheap copy installed. Software interpolation can not add physical pixel density, so the picture will look grainy.
An important aspect is support for HDR10+ and Dolby Vision. These technologies require certification and hardware support that cheap counterparts do not have. If the settings are missing the ability to turn on HDR or the system says that the content is not supported, although previously everything worked - this is a sign of replacing the display with a non-original. Certification also affects the operation of autobrightness: the original smoothly changes the brightness, the copy can do it in jerks.
| Characteristics | Original display | Quality copy | Cheap forgery |
|---|---|---|---|
| Type of matrix | AMOLED / OLED | AMOLED (often relabeled) or quality IPS | TFT/IPS with low density |
| Brightness (max) | 800-1500 nits | 400-600 nits | 250-350 nits |
| Black. | The pixels off (perfect black) | Dark gray, you can see the glow. | Gray, low contrast |
| Imprint scanner. | It works fast and accurately. | It works, but it's slower. | Often not working or glitching |
Compatibility and functional issues
Installing a non-original display often results in not only a deterioration in image quality, but also a loss of functionality of the smartphone. The most common problem is the failure of the built-in fingerprint scanner located under the screen. Reading technology requires a certain thickness and transparency of the matrix, which copies can not provide, as a result, the scanner either stops working completely or begins to fail in every second case.
Another nuance is the proximity sensor, which in modern Xiaomi is often embedded in or below the matrix itself, and when replaced with an analog, the sensor may not work correctly: the screen does not go out during a conversation or, conversely, goes out when you just hold the phone in your hand, which leads to missed calls and accidental cheek presses.
⚠️ Note: After replacing the display with a non-original one in some models (for example, Xiaomi 11, 12, 13 series), a system warning may appear that the screen is not certified.
Power problems are also possible: Low-cost displays are less efficient, causing accelerated battery discharge; the phone may start to warm up near the top of the case, where the screen plume is located; in rare cases, a substandard module may even damage the power controller on the motherboard due to voltage surges.
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The absence of a subscreen fingerprint scanner after replacement is the surest sign of installing a copy, even if the seller claimed otherwise.
Where to buy and how to protect yourself
To minimize the risks, it is best to buy the display in specialized spare parts stores with a good reputation, rather than in spontaneous markets or from random sellers on message boards. The original is rarely cheap: the price of the original module with a frame can be up to 40-60% of the cost of a new phone. If you are offered to replace the flagship screen for 2-3 thousand rubles, it is guaranteed to be a copy of low quality.
When buying, be sure to ask for a check and a guarantee. Honest sellers give a guarantee on displays from 14 days to a month, because they understand the risks. If the seller refuses to give a guarantee or writes in a check "no return", this is an occasion to think about the quality of the product. It is also worth checking the packaging: original parts often (but not always) come in Xiaomi branded boxes with holograms.
Before you finally assemble your phone (glading the glass to the body), ask the wizard or plug in the plume yourself and check the touchscreen, the image and the fingerprint scanner. If everything works correctly, you can Proceed to assemble. If you notice artifacts or problems, you better return the goods immediately before the protective film from the plume is removed.
- 🛡️ Warranty: Always keep checks and service contracts, which is your top bargaining chip when disputes arise.
- 🔍 Reviews: Study reviews about the service center or seller on the Internet, paying attention to complaints about displays.
- 📦 Packaging: Having factory-made packaging and labeling increases the chances of originality, although it is not a 100% guarantee.