How to check out Xiaomi Poco X3 Pro for originality and performance: 15 tests before buying

Why checking Poco X3 Pro is not paranoia, it is a necessity.

Xiaomi Poco Smartphone X3 Pro even in 2026 remains one of the most popular budget devices with a top-end Snapdragon 860 processor and a 120 Hz screen. But the popularity of the model plays a cruel joke: in the secondary market, up to 30% of ads contain re-imbroidered, restored or even fake devices. And the fraudsters have learned to fake even IMEI Serial numbers to fool standard verification services.

This article is not about "basic tips like checking a box." 15 specialized tests that reveal hidden defects - from battery swaps to software locks after the update MIUI. We will learn how to distinguish the original Poco X3 Pro (codenamed vayu) from the clone, check the status of the battery without root rights, and why even a new smartphone can have problems with the device. 5G-All instructions are valid for firmware. MIUI 14/15 and custom assemblies of the type Pixel Experience.

⚠️ Note: If the seller refuses to provide a smartphone for verification with a charge below 80% or without SIM-And in 90 percent of cases, it's a bloated battery or a network problem.

1. Originality Check: How to distinguish Poco X3 Pro from fake

Fake Poco X3 Pro externally copy the original to the smallest detail: the same camera design, the inscription "POCO" It's on the back, and it's even a branded hologram box, but there are 5 key differences that fake is giving away:

• 🔍 IMEI on the box and on the phone: Compare the number under the barcode on the package with what appears in Settings → The phone. → General information. For fakes, they rarely match.
• 📱 Serial number: Enter it on the website mi.com/verify. The original will show the model M2012J11G (global version) or M2012J11I (Indian).
• 🔋 Charger: The original power supply has a marking MDY-12-EU (33W) deductively USB-C. Fakes are often equipped with microUSB charges.
• 🎵 Speaker sound: Turn on the bass track (like this test) The original sound is clear even at maximum volume, the clones have wheezing and distortion.
• 📸 Camera: Take a 48MP photo in low light. For fakes, the images are blurred with artifacts in dark areas.

💡 Lifehack: Ask the seller to remove the back cover (if it's already opened). X3 The Pro under the lid has a safety net on the speaker and Qualcomm's labeling on the processor. Clones often have Mediatek Helio instead of the Snapdragon 860.

2.Iron Test: How to Check the CPU, Memory and Sensors

Poco X3 The Pro is famous for its heart, the Snapdragon 860 processor, which beats many 2020 flagships in performance, but scammers often replace it with weaker chips (like the Snapdragon). 732G) Or they use devices with damaged memory. Here's how to detect it:

Benchmark tests

Install the AnTuTu Benchmark app (or Geekbench 6) and run the test. Compare the results to the reference ones:

⚠️ Warning: If the seller says that "tests don't show real performance" or suggests "look at the eye" - this is a sign that the iron is unoriginal or worn out.°C+ simple-minded.

Memory and storage check

Open up. AIDA64 (section of the Memory section) and pay attention to:

• 📊 Type of RAM: Must be LPDDR4X. If so, LPDDR3 — it's a fake.
• 💾 Warehouse: The original has UFS The clones often have eMMC 5.1 (slower than 2 times).
• 🔄 State of flash memory: In the Android section → Look at the storage room, if it's below 90 percent, it's worn out.

Compare. IMEI box-and-phone|Check the serial number on mi.com|Run AnTuTu and compare it to the benchmark|Check the type of memory in AIDA64|Make sure the vault is UFS 2.2-->

Screen Diagnostics: How to Identify Broken Pixels and Problems with the Screen AMOLED

Poco screen X3 Pro is it IPS LCD 120Hz and support HDR10. But even the original devices have defects, like broken pixels, uneven lighting, or sensor problems:

3.1.Broken pixel test

Download the Screen Test app (or Dead Pixel Detect) and turn on the tests consistently:

• ⚫ Black screen: Broken pixels will glow red/green/blue.
• ⚪ White screen: Check the uniformity of the backlight - the original has no yellow spots.
• 🔴🟢🔵 Color tests: If some color is displayed with stripes, the matrix problem.

💡 Useful advice: Check the screen in the sun. X3 Pros are 450 nits bright, and the image remains readable. For fakes, the screen dims to complete invisibility.

Verification of the sensor and refresh rate

Enable in the settings 120 Hz (Settings) → Display. → Frequency of updates) and:

1. Scroll through a long list (like contacts) and the movement should be smooth, without jerking.
2. Draw a complex figure (for example, a spiral) with your finger. The lines should repeat the movement without delay.
3. Use the Touch Screen Test from Play Market to check multi-touch (simultaneously touching with 10 fingers).

⚠️ Warning: If a vendor says, "120 Hz is eating the battery, so they turned it off," it could be a sign that the screen has been replaced with a cheap 60 Hz analog.

4.Battery: How to know the real wear without root

Poco battery X3 The Pro is one of the most vulnerable places. The official capacity is 5,160 mAh, but after 300 charging cycles, the actual capacity can drop to 70 percent. Vendors often reset the cycle counter or install fake batteries with understated capacity. Here's how to check it:

Checking through the engineering menu

Enter the dialer code in the phone number:

##4636##

Go to the Battery Information section and pay attention to:

• 🔋 Charge level: If at 100% it shows 4500 mAh instead of 5160 mAh, the battery is worn out.
• 🌡️ Temperature: When charging should not exceed 40°C. If higher, the battery is degraded.
• ⚡ Voltage: Normal 4.35-4.40 V at 100%. < 4.2 V - Capacity critically low.

Working time test

Charge your phone to 100% and start:

• 🎮 Game (e.g. Genshin Impact on medium settings) with 120Hz enabled.
• 📺 Playing YouTube videos in resolution 1080p60.

The original battery should last at least 5 hours in play and 12 hours in video, and if the time is less than 30% or more, the battery needs to be replaced.

💡

Ask the seller to show the charging history in the AccuBattery app if the graph shows a sharp jump in capacity or temperature above 45°C - battery malfunctioning.

5.Camera: how to check all modules for performance

Poco X3 Pro equipped with a quadrocamera:

• 📸 Basic module: 48 MP (Sony) IMX582)
• 🌄 Wide-angle: 8 MP (119)°)
• 🔍 Macro: 2 MP
• 👁️ Depth sensor: 2 MP

But even the original devices have problems, like blurry on a wide-angle, artifacts at zoom, or broken autofocus. Here's how to diagnose it:

Primary chamber test

Take a photo under the following conditions:

1. 🌞 Bright sunlight: Check the detailing (should be clear edges of objects).
2. 🌃 Low lighting: Turn on Night Mode. The original has little noise, the clones have "snow" all over the frame.
3. 🔦 With flash: Colors must be natural. If the skin in the photo is greenish, it's a white balance problem.

Verification of additional modules

Switch to other cameras and pay attention to:

• 🌄 Wide-angle: The edge of the frame should not be distorted (fish eye").
• 🔍 Macro: Focus should be caught from a distance of 2-5 cm If only from 10 cm - the module is defective.
• 🎥 Video 4K: Write down the video in 4K@30fps. The original does not have "jelly" (artifacts when moving).

⚠️ Note: If the seller says that the camera is bad because of the MIUI" — On pure Android (like LineageOS), the quality will not improve if the hardware is damaged. Check the camera through GCam - if the artifacts remain, the problem is in the module.

💡

The most reliable way to check the camera is to shoot a video in the 4K And zoom in on the PC. X3 Pro should not have a "soapy" effect with zoom.

Communications and networking: 5G, Wi-Fi and GPS

Poco X3 Pro supports 5G (modem X55), But many vendors are hiding network problems, like the phone may not catch some ranges. 4G Or lose contact on the subway. Here's how to check:

The test 5G and LTE

Put it in. SIM-support-card 5G (e.g. MTS or Tele2 and:

1. Check the network indicator: should be displayed 5G (not 4G+).
2. Run Speedtest. Download speed on 5G must have > 200 Mbps.
3. Call another phone, and if you're talking, you're having a problem with your modem.

6.2. Wi-Fi check and GPS

Connect to a 5GHz network and:

• 📶 Measure your speed with WiFi Analyzer. > 300 Mbps.
• 📍 Turn on Google Maps and check accuracy GPS. The error should not exceed 5 meters.
• 🔄 Reboot the router and see how fast the phone connects back. The original has instantaneously, the clones have up to 10 seconds.

💡 A useful tip: If the seller says that "5G Does not work due to firmware" - ask to show the modem settings in MTK Engineering Mode (code ##4636## → Phone information. The original network list will have ranges. n1/n3/n7/n28/n78.

7. Software Verification: Firmware, Locks and Hidden Problems

Even if the iron is fine, Poco X3 Pro can have software locks: a binding to a Mi Account, a blocked bootloader or viruses in the firmware:

7.1 Checking for Mi Account lock

Go to Settings. → Accounts. → Mi Account. If:

• 🔒 Account is tied, but the seller can’t untie – phone blacklisted (stolen).
• ❌ Cannot add a new account – the device is locked after reset.
• ⚠️ The message “This device is locked” appears – Find My Device protection is enabled.

Firmware diagnostics

Open the Settings. → About the phone and check:

• 📱 Version. MIUI: It should be. 14.x.x or newer. 12.x.x — Firmware is outdated, vulnerabilities are possible.
• 🔄 bootloader status: Enter the terminal (via Termux): su -c "fastboot oem device-info If Device unlocked: false, the bootloader is locked (you can't install custom firmware).
• 🛡️ Root Checker: If there is a root, but the seller did not warn - it is suspicious (possibly the phone is hacked).

⚠️ Attention: If in Settings → Additionally. → For developers included the option of debugging by USB, But the seller says he didn't change anything -- probably the phone was interfished.

8 Physical examination: what is hidden under the cover

Even if all tests are passed, check out Poco. X3 Pro for physical defects. Fraudsters often hide:

• 💧 Traces of moisture (even if the phone did not sink, the contacts could oxidize from condensation).
• 🔧 Autopsy marks (scratches on screws, unoriginal detachments under the lid).
• 🔋 Bloated battery (sellers can glue the lid to hide the deformity).

8.1 How to detect traces of repair

Take a flashlight and look around:

• 🔦 Back cover: The original has no gaps between the lid and the body. If there is, the phone was taken apart.
• 🛠️ Screws: The original screws have a Torx cross-shaped head T3. If the lids are removed, the lid is unscrewed.
• 📱 Screen: Swipe your finger around the edge of the glass. If you feel a ledge, the screen was glued on its own (probability issues).

💡 Useful tip: Smell the charging connector. If you smell the burning, the phone overheated when charging (possibly short circuit in the power controller).

💡

If the seller refuses to remove the cover or protective film, this is a reason to doubt the originality of the device. X3 NFC, pro-version).

FAQ: Answers to Frequent Questions