How to see the serial number of Xiaomi Redmi phone

Owning a modern Xiaomi or Redmi smartphone requires technical information about the device. Often users need to know the unique identifier of their gadget to register a warranty, authenticate on the official website or unlock the bootloader. The serial number, often designated as S/N, is the key that distinguishes your particular device from millions of others.

Many owners get lost when standard methods seem inaccessible or incomprehensible. In this article, we will go into detail about all the possible ways to obtain this data, from simply inspecting the box to using engineering codes. A serial number is required to activate the extended Mi Care warranty and confirm ownership of the device in service centers. Let's break down each method in detail so that you don't have any questions.

Search for information on the packaging and body of the device

The most obvious and quickest way to find a serial number is to go to the factory packaging. If you saved a box from a Xiaomi or Redmi smartphone, then one of its faces will necessarily have a barcode sticker on it. This label contains all the primary information: model, color, IMEI and the desired S/N. It is usually located under a barcode and is signed as "S/N" or "Serial No".

However, if the box is already thrown away or lost, it’s worth looking at the back cover of the smartphone itself. On many low-end and mid-range models, such as the Redmi Note or Poco M, the technical information sticker sticks directly onto the back. On flagship models with glass or ceramic backs, this sticker is often missing, because it spoils the design, in which case you have to look for other ways.

• 📦 Find a white sticker on the end of a cardboard box – it’s the most reliable source of data.
• 📱 Check the back of the phone: some models have a factory label.
• 📄 Keep a warranty card, where the serial number of the device is often duplicated.

It's important to understand that the data on the box and on the device must be completely the same. If you buy a phone from hand, be sure to check the numbers on the package and in the settings menu. The mismatch can indicate that the device is assembled from different parts or has a modified firmware. This is a critical point for authenticating the gadget.

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Before buying a used smartphone, be sure to check the serial number on the box, in the settings menu and in the check. Full coincidence is the first sign of the originality of the device.

Use of the Engineering Menu through USSD-code

There's a universal method that works on the vast majority of Android smartphones, including Xiaomi products, which is using a special engineering code that opens a hidden menu with technical information. You don't need superuser rights or a computer connection. You just need to open the phone app.

Enter *#06# and press the call button. The menu will open automatically, pressing the call button in some versions of the MIUI or HyperOS shell. The screen will instantly display all the identifiers: IMEI for each SIM card and the serial number. Be careful: if there are two SIM cards in the phone, IMEI will be two, but the serial number of the device is always the same.

⚠️ Warning: Don't try to enter other codes from the Internet into the engineering menu unless you're sure they're there. *#06# is secure and only displays information, but experimenting with other commands can change the settings of the radio module.

This is a good way to do it, but it has a downside: you can't copy a number directly from this window, you have to either rewrite it manually, which is a risk of errors, or you have to take a screenshot of the screen. It's not always convenient for long alphanumeric lines, but it's the fastest way to access data if the phone is on.

View data in the Android settings menu

If you need to copy a number to paste it into a form on the site, the best way to use the system menu is to use the MIUI and HyperOS shell interface, which makes it easy to find all the technical documentation of the device. To do this, go to the Settings section, then select About Phone. This is where all the information about your gadget is concentrated.

In the menu that opens, you'll see the Android version logo, MIUI version number, and other options. To see the serial number, you sometimes need to click multiple times on the system version logo or just scroll down. In newer firmware versions, information is often hidden inside the "All Options" or "Details" submenu so as not to clutter the main screen, and there you'll find the "Serial Number" or "S/N" line.

The thing about Xiaomi's interface is that if you press a line with a number or a version of Android long enough, it can automatically copy the data to the clipboard, which is a very useful feature that eliminates the need to type characters manually. If you just click on the text, try pinching the line with your finger for a few seconds.

The advantage of this method is that you see actual information that the operating system itself reads, and even if the sticker on the case is erased, the data in the software remains unchanged (unless the phone has been soldered or re-filtered in an artisanal way), which is the official data source for most services.

Check through the menu "SIM-card status"

In some versions of the Android operating system, especially in stock or close builds, information can be scattered around. An alternative path is through the SIM card status menu» → «The phone» → «Status” or “Status SIM-map».

This displays technical information about network status and identifiers. Depending on the version of MIUI, the serial number can be duplicated in this section or accessed through an additional menu. This is useful if the main section "About phone" has a display failure or the interface looks different.

Please note that the menu is often listed in the same menu. MAC-Although it is not a serial number, it is also a unique network interface identifier that is sometimes required to configure a router or filter access on corporate networks.

Using ADB to obtain a serial number

For advanced users who are engaged in system modification or debugging, there is a more powerful tool – Android Debug Bridge (ADB). This method requires connecting the smartphone to the computer through USB-It allows you to access system variables directly.

First, you need to activate USB debugging mode. Go to Settings → About Phone and quickly click on MIUI Version 7 times until you have become a developer. Then, in the advanced settings, turn on USB debugging. Connect the phone to your PC and type the command into the console.

adb shell service call iphonesubinfo 1

This command will return the string with the identifiers, but a more accurate way to get the serial number through ADB is to use the command:

adb shell getprop ro.serialno

The result will be displayed in the terminal immediately after you type in, and the good thing about this method is that it works even if the screen is broken, but the touchscreen is partially functional, or if you're remotely operating the device, and it's a professional tool for service engineers.

⚠️ Attention: For work ADB You need to install Android platform tools SDK Without drivers, the computer may not see the smartphone in debugging mode.