How to determine a new or used smartphone Xiaomi: a complete guide with photos and videos

You plan to buy Xiaomi at a bargain price but doubt the seller’s honesty?The risk of running into a repackaged or refurbished is higher today than ever. According to Counterpoint Research, up to 15% of smartphones in the secondary market are sold under the guise of new ones. This article will teach you 10 ways of checking that even service centers use, from packaging analysis to hidden labels in firmware.

We're not going to be limited to basic tips like "look at the box." Here you'll find unique methods of checking through the engineering menu, analyzing battery logs, and even ways to identify a replaced display by color rendering, POCO X5 And Xiaomi 13, we've put together separate tables with standard wear values. Ready to be a diagnostic expert!

1. Packaging analysis: 7 signs of counterfeiting or repackaging

Xiaomi's box is the first "document" of the phone, and the manufacturer uses 5 layers of protection for the package, but the scammers have learned to bypass them.

• 📦 Seals on the box: The original ones have holographic elements with the Mi logo that change color when tilted. on fake seals, the seals are often glued crooked or made from regular foil.
• 🔍 Serial number: Must match on the box, on the phone (Settings) → About the phone and on the sticker under the battery (if the model is collapsible.
• 🖨️ Font and print: Original boxes have laser-printed text, not nail-washed. Fakes often have blurred letters or translation errors.
• 📏 Box sizes: For each Xiaomi model, there are exact dimensions. 12 Pro+ boxed 165×85×45 mm. Deviation more than by 2 mm - sign of repackaging.

Pay special attention to the label with IMEI On new phones, it's matte and doesn't peel off when you try to nail it, and if the sticker is shiny or it's easy to move, you've either had a fake or you've had your phone open.

Verification IMEI: How to identify a replacement or rebuilt device

Code. IMEI — This is your smartphone's passport, and fraudsters often fake it to hide the history of the device:

1. Dial on the phone keyboard *#06# - a window with IMEI will appear.
2. Compare it to the code on the box and under the battery (for collapsible models).
3. Check it out. IMEI via services: IMEI.info – will show the activation date and the SNDeepInfo model – will reveal recovered phones

Critical signs of deception:

• ⚠️ IMEI Starting with 00 or 99 are the “junk” codes that are put after the motherboard is repaired.
• ⚠️ The date of the first activation in the service IMEI.info is older than 3 months when buying a new phone.
• ⚠️ Model mismatch in service and on the box (for example, the service shows Redmi Note 11, and the seller claims that it is Note 12).

3.Diagnostics through the engineering menu: Hidden wear metrics

The Engineering Mode contains data that vendors often reset but cannot forge.

1. Open the phone application
2. Dial ##4636##
3. Select Battery Information or Testing

Key parameters for verification:

• 🔋 Battery health: 100 percent on a new phone. If it's less than 97 percent, the battery is worn out.
• 📱 Total charge cycles: The new unit 0-5 More cycles. 20 — sign.
• 🕒 Battery usage time: Shows total battery life. <10 hours.
• 🌡️ Temperature: If at room temperature it shows >35°C, possible battery problems.

For Xiaomi models 12/13 series K50 There is an additional display test: go to Settings → Screen. → Color mode → If you have an option. DC Dimming is disabled and cannot be activated – the display has been replaced (the original screens always support this feature).

Check out Battery Health (should be 100%)|Make sure there are no charging cycles|Compare battery life|Check the support DC dimming (for flagships)|Write down the serial number from the menu.-->

Physical examination: micro scratches, backlashes and other "diseases" of B/U phones

Even if the phone looks perfect, there are 12 zones that give away its past life.

• 🔍 Camera: Micro-scratch on the glass of the lens (especially the ultra-wide module) appear after 3-6 Light the flashlight at an angle, and the scratches will cast shadow.
• 📱 Buttons: On new phones, the Volume and Power buttons move evenly without backlash.
• 🔌 Jack USB-C: Put the cable in and swing it to the sides.Luft >1 mm indicates a replacement connector or heavy use.
• 🎧 Speakers and microphones: Blow into the microphone hole - new phone should not have dust inside.Gray plaque is a sign of long-term use.

Pressurization test (for models with protection) IP53/IP68): Put a flashlight on the junction of the body and the camera, and if you see the light inside, the seals are worn out, the phone could drop or repair.

⚠️ Attention: On phones POCO F4/F5 They often fake water protection by sticking on extra rubber pads. The original ones are laser-engraved. IP53 on SIM-lot.

To check the display, use the broken pixel test:

1. Install Screen Test from Google Play.
2. Select Black, White, Red, Green, Blue modes.
3. Look at the uniformity of the backlight. Yellow spots or uneven brightness indicate a replacement matrix.

5. Check firmware and update history

Firmware (MIUI) It keeps track of all updates, even if the phone was reset:

1. Go to Settings → About the phone → MIUI version
2. Click 7 times on the kernel version (you will be notified "you became a developer")
3. Back to Settings → Additionally. → For developers → Version. MIUI
4. Select the Update Log (Update Log)

What should alert you:

• 📅 Update dates older 2-3 months from current date.
• 🔄 A large number of updates (more than 5 in the last month) – a sign of active use.
• 🔧 Handheld firmware: If the log has records such as Fastboot update or Recovery update, the phone was reflashed.

For Xiaomi 13 Ultra and Redmi models K60 Pro has an additional test: enter the command in the engineering menu

getprop ro.miui.region

CN

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Download the app MIUI Hidden Settings – It will show the full history of the firmware installed, including dates and versions, even if the update log is cleared.

Battery Testing: How to Detect Change or Wear

The battery is the most vulnerable component of Xiaomi, and even if it's replaced, you can detect a fake.

1. Install AccuBattery from Google Play.
2. Charge your phone to 100% and wait for calibration (1-2 cycles).
3. Check the parameters: Health: Should 95-100% Design capacity: Coincides with passport capacity (e.g, 5000 mAh for Redmi Note 12 Pro+). Charge speed: Xiaomi's new phones are charging on 18W+ (for models with support for fast charging).

Signs of a fake battery:

• 🔋 Capacity in AccuBattery on 10-15% less than the claimed (for example, 4200 mAh instead of mAh 5000 mAh).
• 🔥 Phone's warming up. >40°C when charging (check in the AIDA64).
• ⚡ Charging speed drops below 10W After 80% (typical for worn-out batteries).

⚠️ Note: Xiaomi’s 2023 phones (like the Redmi Note 12) use dual-cell battery technology. Apps like AccuBattery can show half capacity (like 2,500 mAh instead of 5,000 mAh) is normal. See the total value in the Battery information section.

7. Camera and sensor inspection: how to identify module replacement

Xiaomi cameras often fail when they fall and are replaced with non-original ones.

1. Open the Camera app and switch to each module (main, ultra-wide, macro, telephoto).
2. Take a photo of a white sheet of paper in good light.
3. Enlarge the picture and check it out: 🎯 Color spots in corners (a sign of a cheap lens). 🔍 Sharpness: On the original modules, text on paper can be read even at the edges. 🌈 Chromatic aberrations (rainbow stripes at the edges) - characteristic of non-original lenses.

To check the sensors, use the Sensor Test from Google Play:

• 🧭 Gyroscope/accelerometer: Spin the phone - the hands should move smoothly, without jerking.
• 📡 Approximation Sensor: Cover the top of the phone with your hand – the screen should go out/light up.
• 🌡️ Light sensor: Cover the LED flashlight with a cloth - the brightness of the screen should change.

On the Xiaomi 13 Ultra and Mix Fold 3 phones, there is an additional test for Leica lenses: in the manual camera mode, check for the Leica Authentic and Leica Vibrant options. Their absence indicates a replacement of the main module.

8.Verification through Xiaomi service centers: official methods

If you are still in doubt, use the official tools of Xiaomi:

• 📄 Warranty check: Enter the serial number on Xiaomi's website.The new phone must have In Warranty status.
• 🔧 Diagnostics at Mi Service: Sign up for a free check at the service center. They use the Mi Diagnostic Tool scanner, which shows: Date of first activation History of repairs Battery and display condition
• 📱 Mi Verify: Download it from Google Play (not available in all regions) and it scans the Qr code on the box and shows the status of the device.

What to do if the phone is B/U or restored:

1. Ask the seller for checks and a warranty card.
2. If you have purchased online, you can make a return via the site (on Wildberries or Ozon you have 14 days to return).
3. Check if the phone is on the blacklist. IMEI.

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The only 100% way to test a new phone is through official diagnostics at Xiaomi’s service center.

FAQ: Answers to Frequent Questions