How to accurately determine the display model on Xiaomi Poco X3 Pro: from settings to disassembly

Introduction: Why it’s important to know the screen type on the Poco X3 Pro

Xiaomi Poco Smartphone X3 The Pro comes with different types of displays depending on the batch, the region of delivery and even the date of production. IPS-full-resolution matrix HD+ (2400×1080) and frequency of renewal 120 Hz, but in practice users are faced with variations: from the original panels of Samsung or BOE Knowing the exact screen model is critical in several cases:

First, it affects color quality – for example, Samsung’s matrixes are traditionally considered more contrasting than BOE. Second, when replacing the display after a fall or crack, it is important to choose a compatible panel with the original backlight and touch layer, otherwise you risk getting artifacts when touching or uneven brightness. Finally, some firmware and calibration profiles (for example, in the Screen Balance app) are optimized for specific matrix models.

In this article, we'll look at all the ways you can identify a display, from software methods to visual analysis, including hidden engineering menus and physical disassembly. None of these methods require root rights, but some require care to avoid damaging the device.

Method 1: Check through smartphone settings (without additional tools)

The easiest and safest method is to extract the display information from the standard MIUI menus. Unfortunately, the Poco X3 Pro does not directly specify the matrix model, but you can get indirect data:

1. MIUI version and device model: go to Settings → About phone. Check the lines of the MIUI version and Model. If the model name has an EEA suffix (e.g. m2102j20sg), this indicates the European firmware, where Samsung matrixes are more common.
2. Screen settings: Open Settings → Display. Pay attention to the available color reproduction modes: 🔹 Standard – usually corresponds to the factory calibration for the original panels. 🔹 Saturated – may indicate Samsung’s matrix (wider color gamut). 🔹 Reading mode is an indirect sign of a non-original panel (occurs after replacement).

Also on this menu, check for the Adaptive Update option, and if it's not available and the screen only supports fixed 60Hz or 120Hz, it could be a non-original firmware or a replaced matrix.

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If the screen settings do not include the Color Mode or Color Temperature option, it is highly likely that a non-original panel is installed without hardware calibration support.

Method 2: Engineering menu and hidden test codes

More information about the display can be obtained through the MIUI engineering menu. This method does not require root rights, but requires caution - do not change the settings unless you are sure of their purpose!

To enter the engineering menu:

1. Open the Phone app.
2. Enter the combination: ##36446337##
3. Select Version info (version information).

In the menu that opens, find the sections:

• 📱 LCD ID — The matrix manufacturer code may be displayed here (e.g, SDC Samsung Display, BOE for BOE Technology).
• 🔧 TP ID — Sensory layer identifier (must match with the sensor layer) LCD ID original-panel).
• 🖥️ Panel Version – The matrix version (e.g, V1.0 first-party).

If the LCD ID displays a Unknown value or an empty field, it may indicate:

• 🚨 Non-original panel (often after repair install cheap analogues without the correct firmware).
• 🔄 Updated firmware, where access to the engineering menu is limited (for example, on customized ones) ROM Pixel Experience).

Method 3: Visual inspection and tests for artifacts

Even without disassembling the device, you can tell the type of matrix by its characteristic visual features, a method that is subjective but often helps to distinguish Samsung from BOE or non-original panels.

Test 1: Viewing angles and color reproduction

• 👁️ Look at the screen from an angle. ~45° When you display a white background (open notes or a browser with a blank page). Samsung matrices have almost no color distortion, whereas the Samsung matrices have a very low color. BOE may appear a yellowish or bluish tint.
• 🎨 Open an image with gradients (like the Lagom test images) If you see stripes or sharp transitions on the gray gradient, it's a sign of a cheap panel.

Test 2: Lighting and uniformity

• ☀️ Turn on maximum brightness in a dark room. Original matrices have uniform lighting, while non-original matrices can glow brighter at the edges or in corners ("cloud effect").
• 🔦 Check for availability. PWM-flickering (may cause eye fatigue) To do this, take a screen from another camera in slow motion (240) FPS). If you see a flicker, it's a cheap panel.

Test 3: Touch layer

• ✍️ Do a multi-touch test: touch the screen with 5-10 fingers at the same time. On non-original panels, touches may "miss" or "ghost" presses may appear.
• 📏 Check the responsiveness at the edges of the screen – the original matrices have uniform sensitivity, while the replaced ones may have “dead zones” 2-3 mm wide.

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If you scroll through pages or play games, the screen is shaking or horizontally barred, that's a sign that the matrix is not compatible with the display controller, and that's often the case when you replace it with cheap ones.

Method 4: Disassembly of the device (for experienced users)

If the software methods fail, you can visually identify the matrix by removing the back cover. Attention: this cancels the warranty (if it is still valid) and requires electronics skills.

• 🔧 Plastic mediators or shoulder blades.
• 🔥 Fryer (for softening glue).
• 🧲 Magnetic screwdriver (cross, size) PH00).
• 📸 Loupe or macro lens (for reading small inscriptions).

Procedure:

1. Turn off the phone and remove it. SIM-map.
2. Heat the back cover edge with a hair dryer (a temperature of ~60°C) for 2-3 minutes.
3. Carefully tuck the cover with the mediator, starting at the bottom edge (where the USB-C connector is).
4. Unscrew 12 screws that fix the metal plate over the battery.
5. Disconnect the battery plume (use a plastic tool!).
6. Lift up the screen module (it is attached to glue and plumes). On the back of the matrix there will be a labeled sticker.

Typical designations on the original matrices:

Charge the battery by 30-50% (full charge is dangerous!)

Make a backup copy of the data

Prepare the workplace (clean surface, good lighting)

Use an antistatic bracelet or touch a grounded object periodically

Take a picture of each step for reverse assembly-->

⚠️ Warning: When you disconnect the display plume, don't pull the wires, just the plastic connector! Damage to the flexible cable will cause the sensor or backlight to fail, and it will cost 30-50% of the cost of the new screen to replace it.

Method 5: Specialized applications for display analysis

If you don't want to take your phone apart, you can use third-party utilities, which don't always show you the exact matrix model, but they give you additional data to analyze:

1. Screen Test (from White Mobile)

• 📊 Tests color reproduction, contrast and uniformity of backlighting.
• 🔍 Info can display resolution and refresh rate (but not matrix model).

2. CPU-Z

• 📱 In some cases, the Display bar indicates the manufacturer (e.g. Samsung). AMOLED, POCO X3 Pro uses the IPS).
• 📉 If the value in the Density graph is different from 395 PPI, This may indicate a non-original panel with a different resolution.

3. AIDA64

• 🔧 In the Display section, look for Panel or Manufacturer lines. X3 Pro original matrices are usually labeled as LCD (IPS) indicating 120 Hz.

Importantly, none of these applications guarantee 100% accuracy. For example, AIDA64 can show general display information but not a specific matrix model. For accurate identification, it is better to combine this method with visual inspection or verification through an engineering menu.

Frequent problems after replacing the display and how to avoid them

If you are already faced with a screen replacement with the Poco X3 Pro or are planning one, pay attention to the typical problems:

1.The sensor or part of the screen is not working

• 🛠️ Cause: Sensor plume or incompatible panel damaged.
• 🔧 Solution: Check the density of the plume in the connector (sometimes reconnecting helps). If the problem persists, the matrix is incompatible with the controller.

2. Flickering or stripes when scrolling

• 💡 Reason: Disparity between the update frequency of the matrix and firmware (for example, 60 Hz panel is installed instead of 120 Hz).
• 📱 Solution: Update your firmware to the latest version or roll back to the one that supports your matrix.

3. Uneven brightness or "clouds" in the backlight

• ☀️ Reason: Cheap matrix with poor-quality illumination or damage to LEDs during disassembly.
• 🔦 Solution: Replace the panel with an original or proven analog (e.g., from the BOE marked NT36672A).

⚠️ Note: When buying a replacement for Poco X3 Avoid panels marked "For Mi" 10T" or "Redmi Note 9 Pro" - despite the appearance of similarities, they use other lighting and sensor controllers, which will lead to a broken display.

FAQ: Frequent questions about the Poco X3 Pro display