How to find out the full information about Xiaomi phone

Owners of Xiaomi, Redmi and POCO smartphones often face the need to obtain detailed information about their device, which may be required when selling a gadget, issuing a warranty, flashing or simply to satisfy technical curiosity. The standard settings menu is usually not enough, because it hides the depth of the hardware.

There are many hidden codes and engineering menus that allow you to pull out data that is invisible to the average user. In this article, we will examine all available methods, from simple settings in the menu to the use of special diagnostic utilities and other tools. ADB-team.

It is important to understand that the information about the phone is divided into software (OS version, build date) and hardware (processor model, memory capacity, battery status).

Use of the standard settings menu

The most obvious and secure way to get basic data is through the system's regular menu, but many users don't notice the hidden features inside this section. First, open Settings and go to About, and this shows the device model, the MIUI or HyperOS version, and the amount of RAM and internal memory.

If you want to know more about the processor, you need to do a series of quick taps. Find the kernel version or MIUI version string and quickly click on it 5-7 times in a row. You will open a hidden CIT menu or advanced chipset information where you can see the real core frequency and temperature in real time.

⚠️ Note: Do not change the values in the engineering menu CIT unnecessarily, this can cause the calibration of sensors or screens to malfunction.

This section often hides the serial number of the device, which is required to check the status of the warranty on the official website, and you can see the status of unlocking the bootloader if it was previously unlocked by the user.

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Remember the MIUI build number before updating the firmware – this will help you quickly roll back in case of bugs in the new version.

Verification IMEI and serial number through USSD-code

Codes are critical to device identification in cellular operators’ networks and service centers IMEI and SN. The fastest way to do this is to use universal USSD-Type the code *#06# on the phone keyboard!

If you need to copy this data, just click the Copy button or take a screenshot. In modern versions of Xiaomi shells, this screen also allows you to see the image of the image. MAC-Wi-Fi and Bluetooth addresses, which is useful when setting up a router or fixing connection problems.

• 📱 IMEI 1/2 — a unique identifier for each SIM-Cards required to block stolen phone.
• 🆔 SN — serial number used by the manufacturer to track batch and release date.
• 📡 MEID — Equipment ID relevant to networks CDMA (It is rarely used in Russia, but it is important for export).

There is also code ##6484##, which opens the full engineering test menu, and in the Version section you can find more information about the motherboard revision and the date of the last screen calibration, which is especially important when buying a used device to make sure there are no replacement components.

Technical Specification Analysis with AIDA64 and CPU-Z

Android hardware often shows rounded memory values or hides the real resolution of the screen matrix. For accurate technical data, the best use is specialized analytical applications. AIDA64 and CPU-Z.

Once you install AIDA64, you'll have access to a detailed report, and in the Android section, you'll see the exact version of the Linux kernel, the API layer, and the pixel density (DPI), and the Device section will tell you about the actual screen resolution that manufacturers sometimes programmatically scale in the interface.

The Battery section is a special focus, and it shows not only the current charge, but also the temperature, voltage and, most importantly, the estimated battery capacity compared to the passport, and it's the best way to detect battery wear without opening the case.

Using third-party diagnostic tools, you can detect inconsistencies in the specifications declared by the seller, for example, if the store claimed that there is an AMOLED screen and the program shows IPS, this is a clear sign of a fake or replacement matrix.

Checking the purchase date and activation by IMEI

One of the most important questions when buying a smartphone from hand or in gray stores is when exactly the device was activated. Xiaomi’s official warranty is often tied not to a check, but to the date of the first activation on the network.

There is an official Xiaomi authentication portal, where you can enter your IMEI or serial number at mi.com/verify, and the system will tell you if the device is original and give you an approximate production date, but the exact activation date is often only shown by authorized service centers.

⚠️ Note: If the service shows that the warranty has expired even though you bought the phone yesterday, then the device was activated earlier and may be refurbished).

For a deeper look, you can use third-party databases that aggregate information about repairs and service calls, and by typing IMEIs into those databases, you can see if the phone is wanted or blocked by the operator for not paying bills by the previous owner.

Using the Engineering Menu for Diagnostics

Xiaomi’s engineering menu is a powerful tool for testing all the modules on the phone. To get there, dial ##64663## (or #6484##) and you’ll see a list of tests, each of which checks a specific component.

Here you can check the vibrator, all the microphones, speakers, proximity and light sensors, and the TouchPoint test, which detects dead zones or false presses on the screen, is of particular interest, which is often found after poor repairs.

In the Version or Hardware Info section, you can see detailed memory information (such as LPDDR4X or LPDDR5), which directly affects the speed of multitasking, and here you can see the region code (CN, Global, EU, RU), which is important for understanding the market for the firmware.

Be careful when using Fast Test features, as some tests can reboot your phone or change calibration. If you're not sure what the item is, you'd better skip it. The main purpose is to collect information, not reconfigure it.

Getting a detailed report through ADB (for advanced)

For users who want the most complete data, including error logs and a detailed list of all installed packages, the ADB tool (Android Debug Bridge) is indispensable, which requires connecting the phone to the computer and enabling debugging mode over USB.

Once connected and logged in on the phone, you can enter the adb shell dumpsys battery in the computer's command line, which will provide detailed battery statistics, including charging cycles and current health, which is hidden in the regular menu.

adb shell dumpsys iphonesubinfo

This command will display complete subscriber information, including IMSI, which can be useful for mobile professionals, and the adb shell getprop command will produce hundreds of lines of system properties where you can find the exact screen model, bootloader version and verification status.

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Using ADB gives you access to data that is impossible to obtain in any other way, but requires a PC and basic command line knowledge.

Working with ADB is safe if you are only reading data (commands start with dumpsys or getprop).However, do not use setprop or rm commands unless you understand their consequences, as this can lead to software failure of the system.

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