Buying a Xiaomi smartphone is often a compromise between the desire to get advanced features and a limited budget. However, when the screen is broken, saving on components can turn a flagship device into a useless piece of plastic. The market for spare parts is full of copies that may look identical on the outside, but in terms of image quality and reliability are inferior to factory modules at times. The smartphone owner faces a difficult choice: overpay for the original or risk buying a cheap counterpart.
The difference between an original display and a quality replica is often in details that are not visible when you look at a store window — it can be a shade of white, sensor sensitivity or power consumption. In this article, we will discuss the technical details that will help you avoid becoming a victim of unscrupulous sellers and service centers.
And you have to understand that even within the original category, there are gradations, there are displays taken from broken phones, there are new factory modules in the package, and there are so-called "originals without frames" that are glued in workshops, and they will all behave differently in operation.
Visual diagnostics: colors and viewing angles
The first thing to look out for when turning on the device is color reproduction. AMOLED-The matrices that most modern Xiaomi models, including the Mi and Redmi Note series, are equipped with are deep black. IPS-print-and-flip OLED-In the case of analogues, the original screen, when you display black, actually turns off the pixels. If you see black as dark gray or bluish, that's a sure sign of a non-original module.
Viewing angles are the second critical parameter: tilt the phone at a 45-degree angle and look at the white background in the settings or in the browser. On the original matrix, the color remains stable, only slight dimming is possible. Copies often have a "crystallization" effect or a sharp departure into yellowness / greenness. This is due to the use of cheaper polarization filters.
⚠️ Note: If the brightness at maximum when installing a new screen causes ripples or flickering, which is noticeable by lateral vision, most likely, the display controller does not meet the specifications of the smartphone processor.
Brightness also plays a role. Xiaomi's original panels are calibrated to ensure that they are readable in the sun. Copies often have a brightness ceiling of about 350-400 nits, whereas the originals give out 500-800 nits and above. You can check this by comparing two identical phones side by side under direct beams of light.
Marking and physical differences of the module
If you have the option to inspect the module itself before installation or during disassembly, look at the plume and back of the matrix. Xiaomi's factory parts always have clear, laser engravings with the model codes. These codes can be broken into the databases of panel manufacturers such as Tianma, Huaxing or Samsung, which are suppliers to Xiaomi.
On the plume of the original display are often present specific QR-And you can see the codes and barcodes that are automatically readable on the assembly line, and the copies are either missing or printed with a regular paint that can be erased, and you can also look at the connection connector, which is perfectly fit in the originals, and the contacts have a uniform golden hue.
The thickness of the module is another physical parameter, and copies are often made thicker than the originals to compensate for the lack of a protective layer of glass or the use of a rougher backlight technology, which can cause the phone to close worse or a gap between the frame and the screen.
💡
Save the package from the old broken screen. Compare the location of the contacts and plume on the new and the old modules, even millimeter shifting can lead to installation problems.
Software tests and engineering menu
Xiaomi provides powerful built-in diagnostic tools that help distinguish the original from the fake at the software level. The most reliable way is to use the CIT (Customer Integration Test) engineering menu. To get there, open the Phone app and type in the combination ##6484##.
In the menu that opens, select the item associated with the display (usually called "Display" or "Color Test"). Here you can check the uniformity of the backlight, the presence of broken pixels and the operation of colors. Original screens are strictly controlled, so the gradients should be smooth, without stripes (banding).
☑️ Checking in CIT-menu
Also worth noting is the light sensor, which is calibrated to a specific model in the original modules, and if the screen does not automatically change brightness when you put your hand up or go out into the light, it's a sign of controller incompatibility or poor copy quality.
Touchscreen and multi-touch test
One of the most common problems with copies is the degradation of the touchscreen, and unlike the original, which uses a high-quality oleophobic coating and a precise touch layer, the sensitivity in replicas is often understated, which is manifested in the need to push harder on the screen or to let touches on the edges.
To test multi-touch, you can use the standard test in the engineering menu or download a specialized application from Google Play, such as the MultiTouch Test. Xiaomi’s original display should support 5 to 10 simultaneous touches without crashing. Copies often “lose” fingers while pressing three or more dots at the same time.
| Parameter | Original | Quality copy | Cheap forgery |
|---|---|---|---|
| Black. | Deep black (pixels off) | dark gray or bluish | Light gray, visible backlight. |
| Frame (frameless models) | Thin, uniform, color in color with body | A little thicker than the original, a backlash is possible. | Visibly thick, often black or white |
| Response (Touch latency) | Instant, smooth scrolling | Minimal delay, possible jerks | Notable lags, "twitchy" scrolling |
| Energy consumption | Standard model. | Higher than 10-15% | Higher up. 20-30%, quick-load |
Also worth mentioning is the Always On Display (AOD) feature, which often works incorrectly on copies: the numbers may be dim, have artifacts or not display at all, although the system has a feature on, due to the fact that the controllers of cheap arrays do not know how to correctly address pixels in standby mode.
Energy consumption and heating
Few people realize that the screen is the main consumer of energy in a smartphone. AMOLED-The panels are optimized to work with a specific processor and power controller, and copies are often assembled from what is cheaper, ignoring energy efficiency.
After replacing the screen with a non-original one, you may notice that the battery starts to run out faster, even under the same use case.This is because the backlight of the copy can consume more current to achieve the same brightness as the original.
Why is the copy warming up?
In the long run, installing a poor-quality display can cause the battery to bloat due to constant overheating. 1000-2000 The ruble on the screen can result in a replacement battery in six months.
Frequent questions and misconceptions
Many users believe the myth that "original without a frame" is always a good thing. In fact, gluing glass to the original matrix in artisanal conditions often leads to loss of sealability and reduced sensitivity. Factory assembly involves the use of robotic lines and special glue that polymerizes under UV radiation of a certain power.
There's also this misconception that if a phone sees an accessory, it's original. ID-So, the software checks on the About Phone are no longer 100% guaranteed, and only a comprehensive check of the image, the tactile sensations and the behavior of the system allows you to draw the right conclusion.
💡
The surest way to buy the original is to order a display assembled with a frame through official channels or authorized service centers, where they give a guarantee of compatibility.