How to check the serial number Xiaomi on the phone: official and hidden ways

Xiaomi’s serial number is a unique identifier that not only authenticates a device, but also accesses official support, warranty service, or data recovery, but many users face challenges such as where to find the number, how to distinguish the original from a fake, and what to do if the serial does not match the data on the box.

In this article, we will explore all the ways to verify serial numbers on Xiaomi, Redmi and POCO smartphones, from standard methods through settings to hidden commands for the engineering menu. You will also learn how to decrypt information by number, check the history of the device and avoid buying a “gray” or restored phone. Particular attention will be paid to checking through the official service Xiaomi, which since 2023 has updated the validation algorithm and now requires an account binding Mi.

Where is the serial number on the Xiaomi phone?

The serial number (S/N) on Xiaomi devices is duplicated in several places, and can be found both physically on the case or package, and programmatically through the system menus.

• 📦 On the box - usually on a sticker with a barcode (near the IMEI). On new models (for example, Xiaomi 14 or Redmi Note 13 Pro)+) The serum can be hidden under a protective layer.
• 📱 Under the battery - on removable batteries (relevant for old models such as Redmi) 4A or Mi A1).
• 🔧 In the slot for SIM-Cards – on some devices (e.g, POCO X3 Pro) the serial number is marked on a metal frame under the tray.
• 🖥️ In the settings of the phone - the path: Settings → The phone. → General information → Serial number.

If the phone doesn't turn on, you can get the serial number through Fastboot mode.

1. Turn off the device.
2. Press the Power button + Volume down before the Fastboot logo appears.
3. Connect your phone to your PC and type the command in the terminal: fastboot getvar serialno

⚠️ Warning: On fake phones, the serial number on the box and settings may not match. This is a sure sign of a clone or a device assembled from spare parts.

How to check the Xiaomi serial number for authenticity

The official way to verify is through Mi Verify, but since 2023, the algorithm has changed: now you need a tied Mi Account to validate your phone, so if you buy a phone with your hands, ask the seller to temporarily add your account to the list of trusted devices.

Step-by-step:

Log in to Mi Account on phone | Go to Mi Verify| Enter the serial number and IMEI| Confirm the check via SMS| Verify the data with the box-->

• 🌐 Step 1. Go to the checkout page and select a region (e.g. "Russia").
• 📝 Step 2: Enter the serial number (without spaces) and IMEI (You can find out the command *#06#).
• 🔍 Step 3. Press Verify. The system will show status: ✅ Genuine - the original device. ❌ Not Genuine – fake or “gray” imports. ⚠️ Already Activated – the phone is already activated (possibly restored after repair).

If the service gives a Device not found error, it can mean:

• The device is released for another region (for example, the Chinese version of Xiaomi 13T Pro for the domestic market).
• The serial number is faked (a common problem with POCO M5s clones).
• The phone is new and has not yet been added to Xiaomi’s base (relevant for fresh models).

Yeah, always.|Only if I bought it with my hands.|No, I didn't.|I didn't know it was possible.-->

Xiaomi serial number decoding: what the symbols mean

Xiaomi’s serial number is 11-14 characters long and contains coded information about the model, production date and factory, such as the K6803D3GG number, which can be deciphered as:

Some symbols have a special meaning:

• L in position 5 – the device is assembled at the Longcheer factory (often for the European market).
• F is a Flex factory (India or Brazil).
• C – Compal (Taiwan, usually flagship models)

You can use online services like IMEI.info to verify the production date, but they are not always accurate for new models. → History).

Checking the serial number through the engineering menu (for experienced)

If standard methods don’t work (e.g., custom firmware), the serial number can be extracted through an engineering menu, which is suitable for models on Qualcomm processors (e.g., POCO F5 or Redmi Note 12 Pro Speed).

Instructions:

1. Open the phone app and type in: ##4636###
2. Go to the Device Information tab.
3. Scroll down to the Serial Number block.

For devices on MediaTek (e.g. Redmi 10C), use the following code:

##36446337##

Select Engineering Mode → Device Info → Serial Number.

⚠️ Warning: Do not change the settings in the engineering menu unless you are sure of their purpose. Incorrect settings can lead to network loss or overheating of the processor.

adb shell getprop ro.serialno

This requires the included debugging of USB and Mi drivers PC Suite.-->

What to do if the serial number is not read or missing

If the serial number is erased, does not appear in the settings or gives an error during verification, the following reasons are possible:

If you bought a phone with your hands and found a serial number discrepancy:

1. Ask the seller to provide a check or warranty card.
2. Check your device history through Settings → Mi Account → Devices (if the phone was linked to a previous owner’s account).
3. Contact Xiaomi support via the official website by providing a photo of the box, IMEI and check.

💡

If the serial number is missing or tampered with, the warranty on such a phone is automatically voided - even if the device is original.

How to check the serial number Xiaomi without a phone (by IMEI)

If the phone is lost or not turned on, the serial number can be restored by IMEI.

1. Find the IMEI on the box or check (or use a backup from Google Account if the phone has been synced).
2. Go to IMEI.info and enter the code.
3. In the results, look for the Serial Number bar (not all models display this information).

Alternatively, through your Mi Cloud account:

• Sign in to i.mi.com.
• Go to the Devices. → Find the device.
• Select the lost phone – the serial number may be displayed in detail.

If IMEI is missing, try:

• 📧 Check email – when buying in official stores (for example, Mi Store or Messenger) a digital check with a serial book arrives to the mail.
• 📸 Photo of the box – if you took a picture of the package when buying, the number can be enlarged and read.
• 🔄 Recovery through Support – If the phone was tied to Mi Account, support can send data on request (passport required).

Frequent errors in serial number checks and how to avoid them

Many users make the same mistakes that lead to false positives when checking.

• 🔤 Number typos -- serial number is sensitive to register and symbols, K6803D3GG and K6803d3gg — difference.
• 🌍 Wrong region – if you buy Xiaomi abroad (e.g. in Dubai), check the number on the regional site (e.g. Mi). UAE).
• 📦 Replacement box – scammers often paste serial stickers from other devices. Always check the number on the box, in settings and through Mi Verify.
• 🔄 Ignoring IMEI — serial number and IMEI If they don't match the database, it's 100% fake.

To avoid problems:

Verify the number in 3 sources (box, settings, Mi Verify)|Use official Xiaomi services|Check your device history through your Mi Account|Do not buy phones without original packaging-->

If you buy Xiaomi from hand, ask the seller:

1. Take a screenshot of the Settings menu → About the phone with the display of the serial number and IMEI.
2. Show a tied Mi Account (if the phone is not new)
3. Provide a check or warranty card (even if the warranty has expired).

💡

Since 2026, Xiaomi has introduced additional protection: when a new phone is first activated, the system sends a notification to an email linked to the Mi Account. If the seller cannot show this email, there is a high probability that the phone is stolen or recovered.

FAQ: Answers to Frequent Questions About Xiaomi Serial Numbers