How to find the serial number of the phone Xiaomi: all working ways

Xiaomi’s serial number is a unique identifier that can be used to warranty service, unlock the bootloader, verify the originality of the device or restore access to the Mi Account. Many users are faced with the problem of where to look at this number, especially if the phone does not turn on or there is no box.

In this article, we will discuss 7 proven ways to find out the serial number on any Xiaomi, Redmi or other device. POCO — From standard methods through settings to little-known tricks with engineering menus and ADB-You'll also learn how to distinguish the original serial number from the fake one, and what to do if the number is erased or not readable.

1.Serial number in phone settings

The easiest way is to view the serial number right in the settings menu, and it works on all modern Xiaomi devices running MIUI (including Redmi and POCO).

Instructions:

• 📱 Open the Settings app** (cog icon on the desktop).
• 🔍 Scroll down and select About Phone (or About Device on some models).
• 📋 Tap on All Characteristics (or General Information).
• 🔢 Find the line "Serial number"** (Serial number or S/N).

On some firmware, the path may be slightly different. For example, on POCO F5, the serial number appears immediately in the About Phone section without additional clicks. If you have MIUI 14+, look for the MIUI tab version, which often duplicates information.

Open "Settings"|Find "On the Phone"|Tap "All characteristics"|Copy the line "Serial number"-->

⚠️ Note: Some custom firmware (e.g. LineageOS or Pixel Experience) may display the serial number incorrectly or may be replaced with a random character set.

2. Serial number on the box and in the documentation

If the phone doesn't turn on or you can't access settings, the serial number is always duplicated on the original packaging and in the accompanying documents.This is the official way that is suitable even for devices that are turned off or locked.

Where to look:

• 📦 On the back of the box, usually next to the barcode and IMEI. Look for the inscription. S/N or Serial No..
• 📄 In the warranty card - the serial number is indicated at the top of the document.
• 🛒 In a check or invoice from the store (if saved).

Important: On fake boxes, the serial number may match the number on the phone, but when checked through official Xiaomi services, it will not be verified. To make sure it is original, check the number with what appears in the settings (if the phone works).

3. Serial number via engineering menu (##4636##)

If the standard methods didn’t work, you can try to get the serial number through a hidden engineering menu, which works on most Xiaomi devices, but requires input. USSD-code.

Step-by-step:

1. Open the phone application** (keyboard set).
2. Enter the combination: ##4636###.
3. In the menu that appears, select Phone Information (or Phone Information).
4. Scroll down to the Android Version block, where the serial number can be displayed.

On some models (e.g. Redmi Note 10 Pro), the serial number is not shown in the engineering menu, in which case try the alternative code: ##6484## (MIUI Test Menu) or ##64663## (MTK Engineer Mode for MediaTek processors).

Serial number via ADB (for advanced users)

If you have access to your computer and USB debugging mode is enabled, you can find the serial number through Android Debug Bridge (ADB), which is suitable for devices with unlocked bootloader or root rights, but works on standard firmware when debugging is enabled.

Instructions:

1. Download and install ADB Tools on PC.
2. Connect your phone to your computer via USB and allow debugging (the phone will have a request).
3. Open the command prompt (Windows) or terminal (macOS/Linux) in the folder with ADB.
4. Enter the command: adb shell getprop ro.serialno
5. The serial number will appear in the answer line.

Alternative commands for ADB:

• 🔧 For verification IMEI Adb shell service call iphonesubinfo 3 (not available on all models).
• 🔍 To display complete device information: adb shell getprop (look for the line) [ro.serialno]).

⚠️ Attention: If debugging is on USB This method will not work on a locked or faulty phone, and some manufacturers (including Xiaomi) may restrict access to the serial number through a phone. ADB latest-ever MIUI.

5. Serial number through Mi Account (if phone is tied)

If your Xiaomi is linked to your Mi Account, the serial number can be found in your personal account on the official website, which is convenient if the phone is lost or not turned on, but you remember the login details.

How to check:

1. Go to account.xiaomi.com and log in.
2. In the Devices section, find your phone in the list.
3. Click on the model and a page will open with detailed information, including serial number and IMEI.

If the phone doesn’t appear on the list, check:

• 🔄 Update the page or log in/re-enter the account.
• 📱 Make sure the device has been linked to that account (sometimes when resetting the settings, the binding is reset).
• ⏳ Wait 24 hours – sometimes the data is synchronized with the delay.

💡

If you are selling a phone, be sure to untie it from your Mi Account account in the settings (Accounts → Mi Account → Delete your account). Otherwise, the new owner will not be able to use the device without your data.

6.Serial number on the battery sticker (for older models)

On older Xiaomi smartphones (such as the Redmi 3S, Redmi Note 3 or Mi 4), the serial number is duplicated on a sticker under the removable battery, which is the right way to go if you have a removable battery model (released before 2018).

How to find it:

1. Turn off the phone and remove the back cover (a plastic shoulder blade or mediator will be required).
2. Carefully remove the battery - there should be a white sticker with technical information under it.
3. Find the S/N or Serial Number.

On newer models (such as the Redmi Note 12 or Xiaomi 13), the battery is not removable, so this method is not suitable.

Redmi (Series Note, K, A)|POCO (F, X, M)|Xiaomi (series 11, 12, 13)|Old model (until 2018)|Another brand-->

Verification of serial number for authenticity

Finding out the serial number is only half the battle, and to make sure your device is original and not fake, you need to check the number through Xiaomi's official services, which is especially important when buying used phones.

How to verify authenticity:

1. Go to mi.com/global/verify.
2. Enter the serial number and IMEI (can be found in the settings or on the box).
3. Enter the captcha and press Verify.

What do the results mean?

• ✅ «Authentication passed* - original device.
• ❌ «Authentication failed"** - serial number invalid (possibly fake or erased).
• ⚠️ «Device not activated – new and not activated yet (e.g. just purchased).

If the check does not pass, but you are sure of the originality of the device, the following reasons are possible:

• 🔄 Serial number entered with an error (check register and symbols).
• 🛠️ The phone was repaired with a replacement motherboard (serial number tied to the board).
• 📦 Device made of "gray" imports (for example, the Chinese version for the domestic market).

💡

Officially checking mi.com is the only reliable way to tell the original from the fake, and even if the serial number is on the box and in the settings, it can be copied from another device.

Frequent questions about Xiaomi serial number