Owning a modern gadget involves not only using it, but also understanding what is hidden under the shell of the operating system. Xiaomi users often face the need to access hidden parameters of the device to diagnose or verify compliance with the stated specifications. The standard settings menu provides only basic information that does not always reflect the real state of the iron.
Knowing the exact characteristics is essential when buying a used device, choosing the best settings for games or fixing software failures. There are many ways to get this data: from simple to simple. USSD-In this article, we will discuss all available methods that will allow you to look under the hood of your Mi-smartphone or Redmi.
Use of standard settings and phone information
The most obvious, but not always informative, way is through the settings menu, where you'll find the basic data that a typical user needs. Go to Settings → Phone. This section shows the model, the MIUI version, the amount of RAM and the free storage space, but this data can be modified programmatically or not show the details of the components.
For a deeper analysis, the same section can click on All specs (or “All specs”), which reveals information about the processor, graphics accelerator and screen resolution. It is important to understand that the standard MIUI or HyperOS shell often hides the exact core frequencies and type of display matrix, providing only general information.
If you need to know your serial number or IMEI, just click on "Kernel Version" or "MIUI Version" several times depending on the firmware version, and this activates a hidden menu where more detailed technical information is available, which is safe and does not require additional software installation.
⚠️ Warning: Do not try to change the values in the hidden settings menu unless you are sure of your actions. Resetting important system parameters can lead to incorrect interface operation or data loss.
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The standard menu only gives general information, hiding details like the exact frequency of the processor or the type of camera sensor.
Secret. USSD-codes
The Engineering Menu is a powerful diagnostic tool built directly into the firmware, accessed through a set of special character combinations in the Phone app. For Xiaomi devices, the most relevant code is ##6484##. Once you enter this combination, the CIT (Customer Integration Test) menu will automatically open.
This menu provides a complete list of all the hardware components of a smartphone. You can consistently check the vibration, display, light and proximity sensors, microphones and speakers. Pressing each item starts testing a specific module, which allows you to detect malfunctions without connecting to a computer.
There are other codes that can work on different versions of firmware, like ##4636##, which opens a testing menu where you can see battery usage statistics and Wi-Fi connections. *#06# instantly displays all IMEI cola of the device, which is useful when checking the originality of the gadget.
It is worth considering that on global firmware versions, some codes may be blocked by the manufacturer for security reasons.If the code does not work, try entering it slowly or check the relevance of the combination for your particular Redmi Note or Poco model.
Real-life performance checks through ADB
For users who need maximum detail, Android Debug Bridge will be an indispensable tool (ADB). This method requires connecting the smartphone to the computer through USB-cable and availability of installed drivers. ADB It allows you to get data directly from the system, bypassing the limitations of the user interface.
First, activate debugging mode. Go to Settings → About Phone and click on MIUI Version seven times until the notification “You’ve become a developer” appears. Then, in the “Additional” → “Developers” menu, turn on the USB Debugging Slider.
adb shell dumpsys batteryThis command will display detailed information about the battery status, including current charge, temperature, voltage and battery health.
adb shell cat /proc/cpuinfoUsing ADB gives you real-time access to system logs, you can track specific services, identify processes consuming resources, and diagnose overheating. It's a professional diagnostic layer that provides an answer to how to know Xiaomi's performance with maximum accuracy.
☑️ Preparation for work with ADB
Third-party applications for deep diagnostics
If you don’t want to mess with the command line, specialized applications from Google Play will come to the rescue. The leader in this area is already CPU-Z. This application provides comprehensive information about the SoC (system on a chip), showing the load on each core in real time, the current frequency and temperature.
Another powerful tool is AIDA64, which scans all sensors on the device, displaying data on the gyroscope, accelerometer, magnetometer and other sensors, and in the Display section, you can find out the exact resolution, pixel density (PPI) and supported OpenGL standards.
Device Info HW specializes in camera and multimedia, and will show you an accurate model of the camera’s sensor (such as the Sony IMX582 or Samsung GW1), as well as information about the video codecs your Xiaomi supports, which helps you understand why some videos may not play or why the photo quality is different from what you expect.
⚠️ Note: Download diagnostic apps only from official sources, such as Google Play Store. APK-Files may contain malicious code that steals personal data.
Table: Comparison of performance verification methods
To make it easier for you to choose the right way, we have systematized the methods by their complexity and informative content, and here is a comparative table that will help you navigate.
| Method | Difficulty | Details | I need a PC. |
|---|---|---|---|
| Android settings | Low. | Basic | No. |
| USSD codes (CITs) | Low. | Medium | No. |
| Annexes (CPU-Z) | Medium | Tall. | No. |
| ADB Teams | Tall. | Maximum | Yes. |
As can be seen from the table, for quick checks enough built-in tools, but for professional diagnosis it is better to use a bundle of applications and ADB. The choice of method depends on your goals: a simple check before buying or a deep analysis of malfunctions.
Why can the data in apps and settings be different?
Technical Specifications Analysis: What to Look for
When you access data, it's important to be able to interpret it correctly. RAM is one of the key parameters. In Android, some of the memory is always reserved by the system, so if you're claimed to have 6GB, the system can show 5.4 to 5.6GB available. That's okay and not a sign of forgery.
Note the type of storage device. Current Xiaomi models use UFS 2.2 or UFS 3.1. Read and write speeds directly affect the speed of application loading and the system as a whole. You can check the type of storage through the AIDA64 app in the Device section.
Also important is the screen refresh rate. Budget models often have 60 Hz, while flagships and mid-budget Redmi Notes offer 90 Hz or 120 Hz. You can make sure of the real frequency on the developer menu or through specialized display tests in the engineering menu.
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Write down the main characteristics (IMEI, serial number, memory) immediately after purchase and save them in the cloud, which will help prove the device’s identity in the event of theft or loss.
Frequent problems and ways to solve them
Users often experience a phone displaying the wrong amount of memory, such as 64GB instead of 128GB, which may be due to a file system failure or incorrect flashing, and in such cases, a full reset of the Wipe Data via the Recovery menu helps.
Another common problem is that you don't have access to the code engineering menu. MIUI access CIT-Sometimes the menu is blocked, so you can try downloading the official app. MIUI CIT (if available for your model or use the superuser rights (Root) to force the tests to run.
If ADB If you don't see the device, make sure the right driver is installed. for Xiaomi, it's often Google. USB Driver or specific driver from Xiaomi. Also try to replace USB-cables, as many cables are only for charging and do not transmit data.
⚠️ Note: Getting Root rights for deep diagnostics can void the warranty on the device. Use this method only if you are an experienced user and are aware of the risks.
How to verify the authenticity of Xiaomi by characteristics
The issue of authenticity is particularly acute when buying in the secondary market. Chinese manufacturers often release copies of popular models. The first sign of counterfeiting is a feature discrepancy. If the settings say Snapdragon 8 Gen 1, and in CPU-Z you see an old MediaTek with a low rating in Antutu, you have a fake.
The second is build quality and software. The original always has a sleek interface, working animations, and no pre-installed junk that is not typical for global firmware. Check Google's services: the original global versions are built-in by default, Chinese versions need to be installed separately, and forgeries they may not work properly.
Compare the IMEI on the box, in the settings and on the back cover (if it is not removable). All three values must match. You can also check the status of the device on the official Xiaomi website by entering a serial number. This is the most reliable way to verify the legality of the origin of the gadget.
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The data from multiple sources (ADB, apps, visual inspection) gives the most accurate picture. Don't rely on just one screenshot of the settings.