Where to see the serial number on the Xiaomi phone: all the ways for Redmi, POCO and Mi

The serial number (S/N) of a Xiaomi smartphone is a unique identifier that you may need to guarantee service, unlock the bootloader, restore access to the Mi Account or verify the originality of the device. Without it, you can not repair the service center, activate certain functions or even sell the phone in the secondary market, and not all users know exactly where to look for this number – especially if the box is long lost and the sticker on the back has been erased.

In this article, we’ll look at all the current ways to get a serial number on Xiaomi, Redmi and POCO devices, including hidden methods for phones with a damaged screen or a broken system. Instructions are checked on MIUI 12-14 and Android 10-14, but most of them work on older versions, and you’ll learn how to distinguish the original S/N from a fake one and what to do if the number does not appear in the settings.

1. Serial number via phone settings (the easiest way)

If your Xiaomi is switched on and running smoothly, the fastest way to find out the serial number is through the standard settings menu, which requires no additional tools and takes less than a minute.

Open the Settings app (the gear icon on the home screen) and follow the following steps:

• 📱 Go to About Phone (in some firmware it may be called About Device or Phone Information).
• 🔍 Scroll down to the Device Characteristics or General Information block.
• 📋 Find the serial number (or serial number) S/N). It's usually made up of 11–15 numerals.

On some models (for example, POCO F5 or Redmi Note 12 Pro+), the serial number can be hidden behind an additional tap on the line MIUI version or Assembly number – try pressing it 5-7 times in a row.

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If the serial number in the settings appears as unknown or unavailable, this may mean that the phone firmware has been modified (for example, a custom recap).

2. View S/N on a box or documents

If the phone hasn't been unpacked yet or you've kept the original packaging, the serial number can be found on the sticker at the back of the box, usually next to the barcode and IMEI. On the newer models (Xiaomi 13T, Redmi K60), the sticker can be under the protective film — gently tuck it in with your nail.

Also, S/N is duplicated in the following documents:

• 📄 Warranty card (in the column Serial No. or S/N).
• 🛒 Check or invoice from the store (if you bought offline).
• 📧 Order confirmation email (for purchases from Mi Store, AliExpress or other online marketplaces).

⚠️ Note: If the serial number on the box and in the phone settings do not match, this may indicate a counterfeit or replacement motherboard.In this case, contact the seller or check the device through the official Xiaomi service.

3. How to find the serial number through the engineering menu (code ##4636##)

On Xiaomi phones with pure Android (such as the POCO X5 Pro on global firmware), the serial number can be pulled through a hidden engineering menu, which works even if the phone is not activated or locked with a pattern lock (but the screen must be working).

Follow the following steps:

1. Open the phone app and enter the combination: ##4636##
2. In the menu that appears, select the Phone Information tab.
3. Scroll down to the Android Version block – the serial number will be listed in the Serial Number bar.

If the combination doesn’t work, try the alternative code for MIUI:

##225##

Serial number on the battery sticker or SIM-tray

On most Xiaomi models (especially before 2021), the serial number is duplicated on a sticker under the removable back cover.

• 📱 Redmi 4A/5A/6A,
• 📱 Redmi Note 4/5/6 Pro,
• 📱 Mi A1/A2 (Android One series).

To get to the sticker:

1. Turn off the phone and remove the tray for SIM-map.
2. Push the back cover with a plastic card or mediator (start at the corner next to the power button).
3. Carefully remove the lid – the serial number sticker is usually located under the battery or on the motherboard.

On new models with a non-removable battery (for example, Xiaomi 12T or Redmi Note 11), the sticker can be:

• 🔋 On the tray for SIM-suffixes (rarely, but in some parts).
• 📦 Under the protective film on the back panel (you will have to carefully remove it).

A suitable plastic card or mediator

A thin screwdriver (for some models)

Tweezers (to remove the sticker carefully)

Lantern (serial number can be small)-->

5. Obtaining a serial number through ADB (for advanced users)

If the phone is on but the serial number doesn’t show up in the settings (for example, due to custom firmware), it can be pulled out via ADB (Android Debug Bridge), a method that requires a computer and basic command line skills.

Instructions:

1. Download and install Google’s Platform Tools (includes adb.exe).
2. On the phone, activate the Developer Mode (go to Settings → About Phone and tap the MIUI version 7 times).
3. Turn on USB debugging in the Developer Menu.
4. Connect your phone to your PC and in the command line (terminal) do:

adb devices

(Your device should appear)

adb shell getprop ro.serialno

If the command returns an empty line, try the alternative:

adb shell cat /sys/class/android_usb/android0/iSerial

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The serial number received through ADB is always more important than the data from the settings – it is read directly from the motherboard and can not be replaced by software.

Verification of the serial number for originality

Knowing the serial number, you can check if your Xiaomi is a fake or a gray import.

On Mi Verify, enter the serial number and IMEI (you can find out by using the code *#06#). If the system gives a Device not found error, this can mean:

• 🚫 Device fake (clone).
• 🌍 The phone is intended for another region (e.g. the Chinese version for the domestic market).
• 🔧 Serial number was changed after the repair of the motherboard.

⚠️ Note: Some models (e.g. Redmi) 9A For India, the serial number may not be verified on Xiaomi's global site, but it doesn't always mean fake.

7 What to do if the serial number is erased or not readable

If the sticker on the box or phone is damaged and the number does not appear in the settings, try the following solutions:

• 🔍 Use it. IMEI IMEI.info provides some of the device information, including the approximate serial number.
• 📧 Contact Xiaomi with a check or warranty card – they can restore the number on the database.
• 🛠️ If the phone is warranty, contact the service center - they will remove the back cover and count the number from the fee.

Important: You can't programmatically restore a serial number unless it's saved in the system, and the only reliable source is a sticker on a device or a box, or data from Xiaomi's official database.

FAQ: Frequent questions about Xiaomi serial number