How to break Xiaomi smartphone by serial number: the full guide 2026

Buying a Xiaomi smartphone in the secondary market or in unofficial stores is always associated with risks: counterfeits, gray imports, devices with an unclean history (loss, theft, repairs). The only reliable way to check the legality of the phone is to punch through the serial number (SN), this unique identifier is encoded in the firmware and case of the device, and the manufacturer ties to it data about the warranty, the region of sale and even the date of production.

In this article you will find 5 working methods, how to get full information about the phone Xiaomi, Redmi or POCO down SN — From official services to hidden engineering teams, we will also analyze what data can be legally obtained and for what queries Xiaomi services block access (spoiler: history of owners and users of the site). IMEI down SN Not directly tied. All instructions are relevant to models. 2020–2026 years, including Xiaomi lineups 13/14, Redmi Note 12/13 and POCO F5/X5.

Where to find the serial number on your Xiaomi phone

The serial number (SN) is a 15-20 digit code that the manufacturer applies to the case and prescribes in the system settings. On Xiaomi, it can be found in 4 places:

• 📱 In the phone settings: go to Settings → The phone. → General information → Serial number. Some firmware may have different paths: Settings → System system → The phone. → Model and equipment.
• 📦 On the box: look for a barcode sticker — SN near-indicated IMEI and the model (e.g, SN: 123456789ABCDEF).
• 🔧 Under the battery: on older models (until 2020) SN It was duplicated on a sticker under the removable lid, on new smartphones (e.g. Xiaomi). 12T) It can only be seen after the disassembly.
• 🖥️ Through ADB: If the phone is not turned on, connect it to the PC and type the command: adb shell getprop ro.serialno

⚠️ Attention: If SN The box and the settings of the phone are not the same, so you have either a fake or a replacement motherboard device after repair. IMEI *#06# - This must match the data in the box.

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If the serial number is erased or not readable, try scanning the barcode on the box using the Barcode Scanner app, which often shows the full SN.

Official ways to check SN through Xiaomi services

The manufacturer provides 3 legal tools to check the phone by serial number, which show basic information: model, region of sale, warranty status, but data on previous owners, operator locks or repair history through these services can not be obtained - this will require alternative methods (see section 4).

1.A check on the Mi Verify website

Mi Verify is Xiaomi’s official device authentication tool, and works with most models released after 2018.

1. Go to the site and select the language (Russian is available).
2. Enter the serial number (SN) or IMEI (can be found by command *#06#).
3. Enter the captcha and press Verify.

The system will issue one of the statuses:

• ✅ Authentic Mi Product – The Original Device.
• ❌ Invalid Serial Number — SN not found in the database (possible forgery or input error).
• ⚠️ Region Mismatch – the phone is intended for another region (e.g. the Chinese version for Europe).

2. Verification of the warranty through Mi Service

The Mi Service service shows the warranty period.

1. Select the country (it is important to specify the region of purchase!).
2. Enter SN or IMEI.
3. The system will display the date of the start of the guarantee and its expiration.

⚠️ Note: If the warranty has expired but the phone is recently purchased, it is a sign of gray imports (the device may have been in stock for years) or forgery. Also check if the warranty country matches your region: for example, Chinese Xiaomi does not have an official warranty in Europe.

3. Check through the Mi Check app

The official Mi Check app (available on Google Play) scans the SN and shows:

• 📅 Date of production (month/year).
• 🌍 Sales region (CN — China, IN — India, RU — Russia, etc.).
• 🔄 Guarantee status (active/inactive).

The app works offline, but to check the warranty requires an Internet connection.

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Xiaomi’s official services do not show the history of owners or blocking by IMEI. This requires third-party databases (see section 4).

Alternative methods: engineering codes and third-party services

If the official tools didn't provide enough information, you can use hidden engineering menus and third-party databases to learn:

• 🔧 Production Date (more accurate than Mi Check).
• 📡 Network support (e.g, 5G specific region).
• 🔒 Blocking status (loss/theft only for certain regions).

1. Engineering Menu (CIT)

The CIT (Factory Test Mode) hidden menu provides advanced phone data, including production date and regional settings.

1. Open the Phone app.
2. Enter the code: ##4636## (for new models) or #284## (for older models).
3. Select Factory Test or CIT.
4. Go to Version Info, where the Manufacture Date line will be located (YYYY-MM-DD).

⚠️ Warning: Do not change the settings in the engineering menu - this can cause a firmware failure. RF Test, do not press it without the need.

Verification via IMEI (link to SN)

Although the serial number and IMEI are different identifiers, they can be linked through operator databases, such as the IMEI.info service showing:

• 📱 Model of the phone IMEI.
• 🔍 Blacklisted status (loss/theft only for some countries).
• 🌐 Activation region (if the phone is tied to the operator).

To find the IMEI by SN, use the command:

adb shell getprop ro.gsm.imei

Check the sticker under the battery (on older models).

Third-party databases (with caution!)

There are paid services (such as SNR Deep Check) that promise to show your phone history over SN.

• ✅ They can provide data on the date of the first activation and the region of sale.
• ❌ But they won’t show previous owners or the exact history of the repairs (this is a myth!).
• ⚠️ Fraud Risk: Many of these services simply sell empty reports.

What can be found by serial number and what not

Many users expect SN to provide a full report of the phone, from the date of purchase to the list of previous owners, and in practice only a fraction of the data is available.

Critical information: Xiaomi does not bind data on loss/theft locks to the serial number – this information can only be obtained through IMEI in operator or police databases.

How to check if your phone is blacklisted

If you are buying Xiaomi from hand, it is important to make sure that it is not listed in the databases of stolen or lost devices.

1. Check it out. IMEI via services: 🔍 IMEI.info (paid blacklist checks). 📡 SNDeeplnfo (shows blocking status in some countries).

Contrast SN and IMEI

Ask for a check.

⚠️ Attention: In Russia and CIS countries, there is no single database of stolen phones, the most that can be checked is the locking of the operator (for example, through the service Beeline or MTS).

External inspection for damage|Bridging. SN and IMEI boxed|Checking through Mi Verify|Verification IMEI lock-in|Test of camera, speakers, sensors-->

Frequent SN Checking Mistakes and How to Avoid Them

Even experienced users make mistakes when punching a serial number. TOP-5 problems and solutions:

• 🔢 Misprints in SN: Serial number is case sensitive, ABC123 and abc123 — It's different meanings. Always copy. SN from settings, not manually rewriting.
• 🌍 Wrong region: If you check the Chinese Xiaomi through the European service Mi Verify, the system will give an error Region Mismatch.Solution: select China country in the service settings.
• ⏳ Outdated databases: Some services (e.g, SNR Checker) does not update the data on new models. SN via official Mi Verify.
• 🔒 Lock-in IMEI: If the phone is blocked by the operator, SN It will not help, you need to check through IMEI.info.
• 📦 Fake box: Fraudsters often fake packaging but forget to stitch fake-SN into their phone. SN box-and-box!

If the service gives an Invalid Serial Number error, try:

1. Remove spaces in the SN (sometimes they are copied along with the code).
2. Check SN via another service (e.g. Mi Check instead of Mi Verify).
3. Make sure that the phone is not flashed (on custom firmware SN can be replaced).

FAQ: Answers to Frequent Questions