How to find out if the display on Xiaomi

Buying a Xiaomi or Redmi smartphone on the secondary market, as well as contacting an informal service center, always carry the risk of encountering low-quality components. Replacing the screen is one of the most common repair procedures, and unscrupulous craftsmen often put cheap copies, passing them off as the original. Visually distinguishing a quality fake from a factory matrix becomes increasingly difficult as manufacturing technologies become more and more difficult. OLED-The panels have stepped far ahead.

However, software diagnostics and careful inspection can detect discrepancies with high accuracy. The original display always has unique identifiers prescribed in the factory, and meets the stated specifications for brightness and color reproduction. Ignoring the check can lead to rapid burnout of pixels, uneven backlighting or even problems with the touch screen.

In this article, we will detail how to verify Xiaomi display authenticity using built-in system tools and third-party utilities. You will learn to read hidden codes, analyze screen parameters and notice the small details that counterfeit. This knowledge will help you avoid overpaying for low-quality parts and save nerves when buying used devices.

Visual diagnostics and inspection of the body

The first step of the inspection should always be a thorough visual inspection. Xiaomi's factory screen is perfect for the build: the gaps between the frame and the glass are minimal and uniform throughout the perimeter. If you see glass fitting tighter in one corner than in the other, or there is a prominent protruding glue, this is a sure sign of unqualified replacement. The original modules are assembled on automated lines with micron precision.

Pay attention to the color temperature and the uniformity of the glow. Turn on the white picture at maximum brightness and look closely at the screen when the light is off. OLED-The matrices used in the Mi and Xiaomi flagships should glow evenly. Yellow or blue spots, especially in the corners, indicate low production quality or aging panels. Copies are often sinned by the "dirty screen effect" when divorces are visible even on a static image.

⚠️ If under the screen you can see traces of dust or villi, and the phone itself does not have official moisture protection (or it is declared, but the assembly is broken), this is almost guaranteed a sign of opening and replacing the part in artisanal conditions.

It's also worth checking the thickness of the frames. In modern models with COF (Chip On Film) technology, the bottom frame is very thin. On cheap copies, the plume often bends sloppy, making the bottom of the screen much wider than the top, which is especially striking on the Redmi Note and Mi T series.

Checking through CIT's engineering menu

The most reliable way to get a first diagnosis is using the built-in CIT (Country Information Test) menu, which is designed to test all nodes in the factory and allows you to run an automatic screen check. To enter the menu, open the Phone app and type in the code ##6484##. If the code does not work, try ##4636##, although the former option is more universal for Xiaomi.

In the list that opens, select the item associated with the display (usually called "Display", "Screen" or "Color Bar"). The test is a sequential change of colors: red, green, blue, white and black. Your task is to carefully monitor each color. OLED-The pixels should be completely turned off in the screens, creating a blackness effect. IPS low-quality OLED-copy.

During a broken pickle test, swipe across the screen to see if the touchscreen works. The engineering menu will also show if the multi-touch system recognizes all 10 points at once. Copies often have driver problems, which can cause the phone to "not see" some of the taps or react with a delay. If the test is successful, the system will give a "Pass" message, but this does not give a 100% guarantee of originality, since copy controllers have learned to cheat simple tests.

Technical characteristics analysis through AIDA64

For a deeper analysis, you need to look under the hood of the system using third-party utilities. Download the AIDA64 or Device Info HW app from Google Play. These programs can read information directly from the display controller. Launch the application and go to the Display section.

Here, you should be interested in a few key parameters: first, the resolution and pixel density (DPI) that must be strictly in line with the specifications of your model; second, the physical size in inches; but most importantly, the information about the panel manufacturer. The "Panel" or "Manufacturer" field should include the name of a well-known brand, such as Samsung, E-ink, BOE or Tianma. If you see the inscription "Unknown", "Generic" or the name of an unknown Chinese factory, it is a disturbing sign.

Also, pay attention to refresh rates. If your smartphone supports 90Hz or 120Hz, the app should show these values. Copies often only work on the standard 60Hz, even if the system settings are higher, which is because the cheap array controller is not able to support high hertz.

Checking serial numbers and IMEI

Each original display module (or plume that comes with it) has its own identification data. Although the average user can not always read them directly without disassembling, indirect signs will help in checking. In some Xiaomi models, when you replace the screen with a non-original one in the system logs or in a special engineering menu, a warning about the component discrepancy may appear.

Check the phone box. It has an IMEI label, a serial number (S/N) and a model on it. These data must match the ones in the system. To check, type *#06# in the Phone app. Compare the IMEI to the data on the box and, if possible, the data on the back cover (if it's not glass). The IMEI mismatch may indicate that the phone is made of different parts ("Frankenstein"), which is often the case when you replace the display with a cheap analog along with the regluided case.

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When buying a used Xiaomi, always ask for a check or warranty card. Having an official warranty often (but not always) implies that all components are original at the time of sale.

There is a myth that IMEI can be used to break through the history of display replacements on Xiaomi servers, which is not quite true: official service centers enter data on the replacement of the main nodes, but access to this database is closed. However, if the phone is listed as being repaired or has the status of "refurbished" in global databases, this is a reason to be wary.

Sensitivity and multi-touch test

One of the most noticeable signs of a non-original display is the degraded performance of the touchscreen. Xiaomi's original touch layers are highly sensitive and accurate. To test this, you can use the built-in test in the engineering menu ("Touchpanel") or download the multi-touch test app.

Swipe your finger diagonally, the line should be flat, without jerking or tearing. Try typing quickly or playing a dynamic game. Copies often show cursor jitters, missed taps, or "ghost touch" when the phone responds to touches that weren't there. This is especially critical for Black Shark or Poco F game models.

It is also worth checking the fingerprint scanner if it is built into the screen. Under-screen ultrasonic or optical technologies require a certain thickness and transparency of the display layers. Cheap copies often make the layer too thick or use materials that distort the signal, as a result, the scanner begins to work slowly, with errors or stops working altogether after a firmware update.

Differences between OLED and IPS in budget models

The Frequent Fraudsters' Trick - Replacing OLED-screen IPS In the models where the specification should be OLED-It's a matrix, or vice versa. For example, in the Redmi Note 10 Pro, it's a matrix. AMOLED, a) in cheaper versions — IPS. Unscrupulous repairmen can supply cheap IPS-The phone in the phone where it should be OLED, asserting that "it was so".

It's easy to tell them apart. Turn on the black picture in the dark. OLED-The black screen doesn’t glow at all (pixels are off), so black looks like a hole in space. IPS-The screen is always backlit, so black is more likely to be dark gray, and in bright light you can see the lights around the edges, OLED It has more saturated colors and infinite contrast.

⚠️ Note: Do not believe claims that"OLED It burns better, so we have a reliable IPS". Modern. OLED-Xiaomi panels have a life of tens of thousands of hours and burnout protection systems. Replacing the type of matrix changes the power consumption and color calibration, which can lead to malfunctioning of the system.

Another sign is the angles of view. OLED There's almost no color distortion when you look at it from an angle. IPS-And in the case of a copy, it can fade or invert when it's moving away from the center. OLED-screens are usually thinner IPS-analogues, which affects the overall thickness of the module.

Frequent questions and answers

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The most reliable way to avoid problems is to buy phones from official dealers, and repairs are carried out only in authorized service centers, saving checks.