Xiaomi's originality scales by serial number: the full guide 2026

You bought a Xiaomi Mi Smart Scale smart scale either by stock or hand, but you doubt its authenticity? Fake Chinese gadgets are so common that even experienced users run the risk of getting a fake. Serial number is your main tool for verification, but few people know how to use it correctly. In this article, we will analyze all the official and non-obvious verification methods, including hidden markings, which are rarely copied.

Xiaomi is constantly updating its security practices, so old instructions (until 2023) may not work, and we tested the current algorithms on the Mi Body Composition Scale 2, Smart Scale 2 and Mi Scale 3 models, and we are ready to share working life hacks, and we will also tell you what errors 90% of users make during verification and how to avoid them.

Why it’s important to check the originality of Xiaomi’s scales

Fake scales don't just show inaccurate weight, they can be harmful to health. Fake scales often use cheap sensors that distort data by:

• 🔢 Body weight (accuracy up to ±500 g instead of claimed ±50 g)
• 💧 Fat/muscle percentage (Error up to 10-15% due to poor-quality electrodes)
• ⚡ Impedance (incorrect indicators can be misleading in diagnosis)

In addition, fake devices don’t sync with Mi Home or sync partially, losing data, and in the worst case, transfer your biometric data to third-party servers (such cases were recorded with Mi Band fakes in 2022).

Where to find the serial number on the scales Xiaomi

The serial number (S/N) is a unique 14- or 16-digit code that is applied to the body and duplicated in firmware, and on the original scales, it is located in three places:

1. Sticker on the back (under the battery compartment or next to the QR- code).
2. In the mobile application Mi Home/Mi Fit (section "Devices → Settings of the scales → About the device").
3. On the box (on the label with the barcode or next to the model).

Attention! If the serial number on the box and on the scales is not the same, it is 100% fake, and also check if the number is erased when rubbed with an alcohol napkin (fakes often print paint instead of laser engraving).

Method 1: Check through the official Xiaomi website

The most reliable method is the verification on mi.com, which works for all models released after 2019.

1. Go to the checkout page: mi.com/global/verify.
2. Enter the serial number (without spaces and dash).
3. Enter the code from the picture (capcha).
4. Press Verify.

If the scales are original, you will see:

• 📌 Model of the device.
• 📅 Date of production (month/year).
• 🏭 Manufacturer (e.g. Huizhou Plant).

Check the correctness of the input (are there any extra gaps)

Make sure you use mi.com/global instead of regional versions.

Try another browser (sometimes blocks VPN)

If the error "Invalid SN" is a 100% fake device-->

⚠️ Warning! Some scammers fake verification pages. Always make sure that the site address starts with https://www.mi.com (not mi-verify.com or the like).

Method 2: Checking with the Mi Home app

If the scales are already connected to the application, the serial number can be checked directly in it. This method is suitable for models with Bluetooth 5.0 support (Mi Scale 3, Body Composition Scale 2):

1. Open Mi Home and select your scale.
2. Go to Settings. → About the device.
3. Find the serial number or SN.
4. Compare it to the number on the body.

Critical signs of counterfeiting in Mi Home:

• 🚫 The app shows the scales as "Unknown device" or "Mi Scale (copy)".
• 🚫 The device section is missing or empty.
• 🚫 Libras are connected but do not transmit body composition data (weight only).

💡

If the scales are not connected to the Mi Home, try resetting them to factory settings: press and hold the 10 seconds switch until the indicator flashes. Then repeat the pairing.

Method 3: Analyzing the serial number by the Xiaomi algorithm

Xiaomi uses an encrypted serial number system, where the first characters encode the model, factory and batch, deciphering it using the number XMSH03HM123456:

If the serial number does not have an XM prefix or the factory code does not correspond to the official list (HM, SZ, GZ, WH), the device is guaranteed to be fake.

To verify:

1. Check the first 6 characters with the table above.
2. Check that the year of issue (3-4 characters) is no older than the current one.
3. Make sure the factory code is on Xiaomi’s official list.

Method 4: Checking by QR- code on the case

On the original Xiaomi scales, the serial number always has a QR- code, which leads to the product page on the official website.

1. Scan the QR- code with any scanner (e.g., through Google Lens or Mi Home).
2. The link should start with https://www.mi.com/global/.
3. The page should have a photo of your model with the exact characteristics.

Signs of a QR fake:

• 🚫 The link leads to aliexpress.com, amazon.com or another marketplace.
• 🚫 QR- The code is not scanned or leads to a "broken" page.
• 🚫 The page shows another model (e.g. Scale 2 is shown as Scale 1).

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If the QR- code leads to a 404 error page or redirects to a third-party site, the scales are fake. Xiaomi's original QR- codes never "break" - they are static and only lead to mi.com.

Additional signs of forgery (if the serial number is in doubt)

Even if the serial number has passed the check, note the physical differences of the original scales:

• 🔍 Plastic quality: The original has a matte coating without barbs. Counterfeiting is often shiny and smells of chemistry.
• ⚖️ Weight of the device: The original scales weigh 1.8–2.2 kg (fakes are lighter by 200–400 g).
• 🔋 Battery bay: the original lid fits tightly, without backlash. Fakes often have latches.
• 📶 Bluetooth module: the original connects in 2-3 seconds, fake can "seek" the device up to a minute.

Also check the complete set:

• 📦 The box must include: scales, 4 batteries AAA, instruction in English/Chinese, warranty card (for official deliveries to Russia).
• 🚫 Counterfeiting is often packed with or without batteries AA, and the instructions are printed on cheap paper.

⚠️ Warning! Some vendors on marketplaces sell replicas of Xiaomi scales marked "unoriginal but works like original" and not only violate brand rights, but can be dangerous: in 2023, Rospotrebnadzor recorded cases of excess radiation levels in fake bioimpedance scales.

What to do if the scales are fake

If the check showed that your scales are fake, act according to the algorithm:

1. Collect evidence: Photo of the serial number and QR- code, screenshot of the error on the website mi.com/verify. Check or screenshot of the order (if you bought online).
2. Contact the seller: On the marketplaces (Wildberries, Ozon, AliExpress) open a dispute with a claim for a return. In the physical store, demand a replacement or a refund of the money (under Art. 18 ZoZPP).
3. Complain to Rospotrebnadzor (if the seller refuses to return the money): Fill out the form on the website zpp.rospotrebnadzor.ru. Specify article 14.7 of the administrative code ("Deception of consumers").

If you bought a scale with your hands (on Avito, Yule), the chances of getting your money back are minimal.

• Write a negative review with evidence.
• File a fraud complaint in support of the platform.
• If the amount is large (from 10 000 ₽), contact the police under Art. 159 of the Criminal Code of the Russian Federation ("Fraud").

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When communicating with the seller, use the phrase: "The device does not meet the declared characteristics (Article 4 of the Consumer Protection Act)" or "The product is counterfeit, as confirmed by the check on the official website of the manufacturer", this will increase the chances of return.

FAQ: Frequent questions about Xiaomi weights check