Who made the display of your Xiaomi Poco X3: how to know the screen manufacturer in 5 minutes

Have you ever wondered why two Xiaomi Poco smartphones are the same? X3 The reason is often the display manufacturer. Xiaomi doesn't make the screens on its own, it buys them from third-party vendors like Samsung Display, BOE, Tianma or Huaxing Optoelectronics, even within the same model (e.g. Poco) X3 NFC POCO X3 Pro) panels from different brands can be installed.

Knowing the display manufacturer will help you evaluate the actual screen quality, predict its durability, and even choose the best option when buying a used device. For example, Samsung AMOLED panels are traditionally considered brighter and more energy efficient, while BOE can offer more budget-friendly solutions with other characteristics. In this article, we will discuss 5 working ways to accurately determine whose display is installed in your Poco X3 – from simple checks through settings to deep analysis using the engineering menu.

Why Poco X3 is equipped with different display manufacturers

Xiaomi, like many other smartphone makers, has a multi-supplier strategy, which means that one model can buy components from several companies, which allows:

• 🔄 Diversify Risks – If one supplier has production problems, Xiaomi can quickly switch to another.
• 💰 Optimize cost – competition between display manufacturers reduces component prices.
• 📦 Accelerate supply – orders are distributed among several factories, reducing the shortage.
• 🌍 Localize production – local brands displays can be used for different regions (for example, for example, for the local brands, BOE China).

But there’s a downside to this approach: screen quality can vary markedly even across the same series. For example, Poco X3 NFC users often point out that Samsung displays have more saturated colors and better viewing angles, whereas Tianma panels can suffer from yellowness or uneven backlighting. This is not a defect — just features of different technological processes.

⚠️ Note: If you are buying Poco X3 hand, be sure to check the display manufacturer. Some sellers do not mention replacing the screen with a non-original one (for example, after repairs), which can lead to a deterioration in the user experience.

Method 1: Checking through smartphone settings (without root)

The easiest method is to use the built-in MIUI tools, which do not require the installation of additional applications or superuser rights.

1. Open the Settings app on your Poco X3.
2. Go to About Phone (or Device in new MIUI versions).
3. Find all the features (may be called the full specification).
4. Scroll down to the Display or Screen block.

Some firmware may display manufacturer information (such as Samsung AMOLED or BOE LCD). However, this method does not work on all versions of Poco X3 — often the data is hidden. If you do not find the right information, move to the next method.

Try to update MIUI to the latest version

Use third-party applications (see Method 2)

Check through the Engineering Menu (Method 3)

Compare visually with known samples (Method 4)-->

Method 2: Applications for display analysis

If the standard settings don’t work, specialized utilities will come to the rescue. We recommend the following apps (available on Google Play):

• 📱 CPU-Z — Shows detailed information about the hardware, including the display model (Device section).
• 🔍 AIDA64 — Display displays the panel manufacturer (for example, SDC Samsung, BOE for BOE Optoelectronics).
• 🎨 Screen Test – not only defines the brand, but also tests the quality of the image (gradients, broken pixels).
• 📊 DevCheck is a user-friendly interface with the Screen section, where the manufacturer is indicated.

An example of the mapping in AIDA64:

Display:




Resolution: 1080x2400




Density: 395 dpi




Manufacturer: SDC (Samsung Display)




Technology: AMOLED

⚠️ Note: Some applications may show the wrong manufacturer if the display has been replaced with a non-original one, in which case the data will match the panel model rather than the actual brand.

CPU-Z

AIDA64

DevCheck

Other

Not using.-->

Method 3: Engineering menu (for power users)

The Engineering Mode is a hidden MIUI section that brings together low-level settings and diagnostic tools to get there:

1. Open the Phone app.
2. Enter the combination: ##4636###.
3. In the menu that appears, select Phone Information (or Hardware Info).
4. Scroll to the Display or Screen section.

Here you can see parameters such as:

• Panel Vendor is a panel manufacturer (e.g. SDC, BOE).
• Panel Name is a display model (e.g. AMS643JE01 for Samsung).
• Driver IC – a screen controller (can indirectly indicate a brand).

If the ##4636### combination doesn't work, try the alternative code: ##36446337## (for display test) or ##284## (for sensor check).

Method 4: Visual examination and tests

If the software methods didn't work, you can try to identify the manufacturer by the outside, which is subjective, but often works:

1. Viewing angle test: Rotate the screen at 45°. If the colors remain saturated, it's probably Samsung AMOLED. If the image fades or yellow appears, it's probably BOE or Tianma.
2. Black check: Include black background (e.g. wallpaper settings). AMOLED-On the screens, the pixels are completely turned off, creating a "deep" black. LCD-panel (BOE/Tianma) blackish.

The broken pixel test:

• Use the Dead Pixel Test app. Samsung panels are less likely to have defects, whereas BOEs can have "dead" subpixels.

Also note the marking on the display plume (visible when disassembling the device or through a magnifying glass at the end of the screen).

• 🔹 SDC or Samsung - Samsung Display.
• 🔹 BOE or BOE Varitronix — BOE Optoelectronics.
• 🔹 TM Tianma - Tianma Microelectronics.

💡

If you’re not sure about visual diagnostics, take a picture of the screen on another device at maximum brightness. Compare the photo to Samsung and BOE display reference images (you can find them on forums like 4PDA or XDA Developers).

Method 5: Disassembly of the device (extreme case)

If all the previous methods have failed, the most reliable but risky method is physical disassembly, which is only suitable for advanced users or service centers.

• 🔧 Set of screwdrivers (cross, flat, plastic shoulder blades).
• 🔥 Hazel for softening glue (temperature) ~60°C).
• 📸 Loop or macro lens for taking markings.
• 🧲 Screen suction cup.

Algorithm of action:

1. Turn off the phone and remove it. SIM-map.
2. Heat the edge of the display with a hairdryer (don’t overheat – this can damage the plume!).
3. Carefully tuck the screen with a plastic spatula, starting at the bottom edge.
4. Disconnect the display plume from the motherboard.
5. On the back of the panel, find the marking (usually in the upper left corner).

⚠️ Attention: Disassembly of Poco X3 If you're not sure about your skills, you can call a service center, and the cost of replacing the plume can be as high as you can get. 30-50% from the price of the new screen.

💡

If you plan to sell or buy the Poco X3 handheld, the display manufacturer’s information can affect the price: Samsung screen devices, for example, often sell 10-15% more expensive than those with BOE or Tianma panels.

Comparison of display manufacturers for Poco X3: which is better?

Now that you know how to define a screen brand, let's look at the pros and cons of each, and here's a comparison table based on user feedback and tests:

Which display is better? There's no one answer, it depends on your priorities.

• 🎮 For gamers and multimedia enthusiasts – Samsung AMOLED (Better contrast and response speed).
• 💰 For budgetary use — BOE Tianma (cheaper to replace).
• 📱 For long-term autonomy, Samsung is back (AMOLED cost-effectively LCD).

Frequently asked questions