How to find the serial number of the phone Xiaomi Redmi Note 7

Owners of the popular Xiaomi Redmi Note 7 often face the need to identify their device, which may be required when registering a warranty, unlocking a bootloader or authenticating a gadget in the secondary market. Serial number (S/N) and IMEI are unique digital fingerprints that allow service centers to accurately determine the configuration and history of repair of a smartphone.

There are several proven methods of obtaining this information, each of which has its own characteristics depending on the state of the operating system. If the phone is turned on and running normally, the easiest way to go to system settings or use special engineering codes. However, in situations where the display is broken or the device does not boot, alternative methods will be required, which we will discuss in detail below.

It is important to understand the difference between IMEI and serial number, as these are different identifiers. IMEI is used primarily for cellular networks, while S/N (Serial Number) is used for factory accounting and manufacturer logistics. In this article, we will look at all the options available to search for this data, including cases of complete failure of the interface.

The most obvious and secure way to find device identifiers is to access the standard interface of the Android operating system with the MIUI shell. To do this, you need to unlock the screen and go to the main application menu. Find an icon called Settings (usually a gear) and tap it to enter the system management menu.

In the list of options that opens, you should scroll to the bottom of the page. There you will find the About Phone section, which contains comprehensive technical information. This block displays the device model, the MIUI version, the Android version, as well as the IMEI and Serial Number you want.

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If you have a two-sim version of the Redmi Note 7, the same menu will display two. IMEI-code: IMEI 1 for first SIM-maps IMEI 2 for second.

Note that in some firmware versions, the serial number may be hidden by default or only displayed after an additional action. Sometimes you need to click on the MIUI version or the string with the processor several times to activate the advanced developer menu, although this is rarely required for the basic S/N. The information in this menu is completely consistent with the data sewn into the device memory.

Engineering code for quick check

For users who prefer speed and don’t want to wander through the menu, there is a universal engineering method that works on most Xiaomi phones, including the Redmi Note 7, regardless of the shell version. To implement it, open the standard Phone app you make calls through and go to the dial tab.

In the input field, you need to type a special combination of characters. Enter the sequence *#06#. Immediately after entering the last character (gratings), a pop-up will automatically appear on the screen: IMEI 1, IMEI 2 (if there is a slot), serial number and sometimes MAC-Wi-Fi address.

⚠️ Note: Enter the code carefully and only in the Phone application. Introducing incorrect engineering commands in other parts of the system can lead to resets or incorrect operation of communication modules.

This method works even if the phone is not installed. SIM-However, if the operating system is frozen or damaged, this method will not work, because it requires a response from the software interface. It is also worth noting that you can not directly copy the text from this window - you will have to rewrite the data manually or photograph the screen.

📊 Where you most often look IMEI code?

In the phone settings

On the box.

Through the USSD code

On the sticker at the back.

Information on packaging and stickers

If the smartphone doesn’t turn on, the screen is broken, or the system is in a state of endless reboot, physical marking becomes the only source of reliable information. When you buy a new Xiaomi Redmi Note 7, there is always a white label in the box on which all factory data is printed.

This sticker is usually located on one of the side faces of the cardboard box, and it shows the model of the device (for example, M1901F7G), color, the amount of internal memory, as well as barcodes with IMEI and S/N. These data are duplicated on the factory film, which is pasted on the back of the phone in the build.

The table below provides a transcript of the main symbols that can be found on the label:

Designation	Description	Wherever used
IMEI 1	International identifier of the first module	Registration in the network, guarantee
IMEI 2	International identifier of the second module	Registration two SIM-map
S/N	Serial number of the device	Service, authentication
MAC	Network interface address	Router configuration, MAC filtering

Keeping the box and check is a good habit for the owner of the appliance. In the case of loss of the warranty card, it is the serial number from the box and the purchase check that are the main proof of the right to free repairs at an authorized service center.

Search through Mi Account and Cloud Services

Modern Xiaomi smartphones are deeply integrated with the manufacturer’s ecosystem. If your Redmi Note 7 was signed in to Mi Account and sync enabled, you can find the device remotely through any browser on your computer or other phone, this is especially true if the gadget is lost or stolen.

To do this, you need to go to the official i.mi.com cloud service website and log in under your account. After you log in, select the Find Device section. Your gadgets list will display the Redmi Note 7, and details about it will often indicate the serial number and the last known status.

What to do if the account is not tied?

If you haven't logged in to Mi Account or don't remember your password, this won't work, so try to remember if you've linked your device to a Google account, even though S/N displays are less common there.

It is important to note that for this method to work, the phone must be at least periodically connected to the Internet to transmit data about its location and status. If the device is offline for a long time, information in the cloud may not be relevant, but the serial number, as a static characteristic, is usually stored in the profile of the device.

Checking through ADB and computer

For advanced users who have access to a computer, there is a more technical method of getting information through USB debugging, which requires that the developer menu be activated in the phone settings and the USB debugging feature is enabled.

Connect Redmi Note 7 to PC via high-quality USB-Install the drivers. ADB (Android Debug Bridge to your computer. Open the command prompt (in Windows it is cmd or PowerShell) in the tool folder ADB and enter a command to check the connection:

adb devices

If the device is determined and you have given permission to debug on the smartphone screen, enter the following command to obtain the full system properties:

adb shell getprop ro.serialno

⚠️ Note: This method will not work if you have not previously allowed debugging from this computer. For security reasons, the first time you connect to the phone, a request will appear on the screen, which must be confirmed that you can not do when a broken display without additional adapters.

Using ADB allows you to access system properties even when the phone interface is not responding to touch, but the core is loaded, a powerful diagnostic tool that service engineers often use.

☑️ Check through ADB

Install ADB driversTurn on the phone debuggingConnect the USB cableIntroduce command in console

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What to do if data is unreadable or erased

In rare cases, usually after poor-quality repairs, soldering of the motherboard or using artisanal flashing methods, software identifiers may be lost or changed. In such situations, the IMEI may appear as "Null", "000000" or simply not in the settings.

If software methods fail, the only option is to physically inspect the board. The Redmi Note 7 motherboard often (but not always) has a sticker or laser engraved with a serial number, but it will require disassembly of the device to access it, requiring special tools and skills.

It is illegal to erase or change the IMEI in many countries, and if you buy a phone from your hands and find that its IDs do not match the data on the box or database, it may indicate that the device was stolen or seriously interfered with.

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The IMEI match on the box, system and warranty card is the main sign that the phone has not been seriously repaired and is not stolen.

Frequently Asked Questions (FAQ)

Can I change the serial number to the Xiaomi Redmi Note 7?

Technically, it's very difficult and usually not practical to change S/N, because it's factory-wide, and you can change IMEI with root rights and software, but it's illegal and it disrupts cellular networks, and we don't recommend this kind of manipulation.

Where exactly is the IMEI sticker on the case?

On the Redmi Note 7, the factory sticker with the information is on the back glass panel, usually at the bottom, next to the Xiaomi logo or the model inscription.

Why is the IMEI not displayed after the firmware?

This can happen when the NVRAM or EFS partition where network settings are stored is damaged, often solved by returning the original backup or flashing the stock image while saving calibration data.

Do I need a serial number to unlock the bootloader?

To unlock the bootloader through the official Mi Unlock website, the first thing you need to do is to link the Mi Account to the device. The serial number is used by the system to identify a particular gadget when you are tied, but you usually do not need to manually enter it, the utility reads it automatically.

How to check the phone by serial number?

The official check is available at mi.com/global/verify, and by entering IMEI or S/N, you can find out the date of activation of the device, the status of the warranty and the confirmation of authenticity, which is the best way to protect yourself when buying used equipment.