Owners of modern Xiaomi, Redmi and Poco smartphones often face the need to control the heating of the device, especially in the summer or during resource-intensive tasks. Understanding how to know the temperature of the processor of a Xiaomi phone becomes a critical skill to extend battery life and prevent trotting (forced performance decline). Many users do not even realize that Android already has built-in monitoring tools that do not require the installation of third-party applications.
High CPU temperatures can be caused by background processes, system optimization, or heavy applications. In this article, we will look at all the ways you can get accurate heat data from hidden engineering menus to professional software, and learn how to distinguish normal operating heat from critical, interventional heat.
Proper monitoring helps identify problematic applications that can cause overheating even in standby mode. We will look at how to interpret the values obtained and what steps to take if the indicators exceed the permissible limits. It is important to understand that different Xiaomi models may have their own characteristics in displaying diagnostic information.
Built-in diagnostics and engineering menu
The fastest way to access technical information is to use the CIT hidden engineering menu (Customer Inspection Test), which is for service engineers, but is available to anyone who knows the special code. To log in, you need to open the standard Phone app and type in the combination ##6484##. If the code doesn't work, try ##4636##, which opens the test menu.
Once you enter the code, you will see a list of hardware tests, find a item related to Version or Single Item Test. Depending on the version of the MIUI or HyperOS shell, the name may vary. Inside this menu, you can often find a Battery or CPU section that displays current voltage and heat. Please note that some global firmware versions may restrict access to this data by the manufacturer.
⚠️ Warning: Be extremely careful when changing the settings in the engineering menu.Accessual activation of certain tests (for example, vibration or speaker test) can start continuous processes that will themselves cause the device to heat up.
What if the code doesn't work?
If standard codes don’t work, check the About Phone section in the settings. Some Poco and Redmi Note models have a hidden feature that is activated by repeatedly tapping the kernel version or build number, although recent Android 14/15 updates often hide this feature.
Using Monitoring Apps from Google Play
When built-in tools are scarce, specialized applications come to the rescue that read data directly from the motherboard sensors. One of the most popular and reliable tools is CPU-Z. Once installed, launch the app and go to the Thermal or Device tab, and here you will see a detailed breakdown by temperature: CPU Temp (total), as well as the performance of individual cores.
Another powerful tool is AIDA64, which provides comprehensive information about the hardware of a smartphone. The Device -> Thermal section displays data from all available sensors, including the battery, screen and processor. It's important to understand that readings may vary slightly between applications due to different averaging algorithms.
- 🌡️ CPU-Z — Simple interface, ideal for quick check of the current temperature of the processor.
- 📊 AIDA64 — professional tool with graphs and detailing for each sensor of the system.
- 🔋 Ampere – specializes in battery, but also shows critical thermal charging parameters.
- 📈 DevCheck – allows you to see the real frequency of the cores at the moment, which correlates with heating.
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Install only one monitor app and delete it after checking, and running these programs in the background can itself strain the processor and raise the temperature.
It’s worth noting that some features in AIDA64 or CPU-Z may require advanced resolutions that need to be confirmed manually. Without root rights, access to some sensors may be restricted to the Android operating system for security reasons.
Monitoring temperature in games and under load
The most pressing issue for mobile gamers is heating. Games like Genshin Impact, PUBG Mobile or Call of Duty put extreme strain on the GPU GPU and CPU. The MIUI and HyperOS shells have a built-in tool called Game Turbo (or Game Acceleration) that can be used to swipe a sidebar from the corner of the screen.
Inside the Game Turbo panel, the current temperature of the device is often displayed in real time. If the standard widget does not show numbers, you can activate "Increased Performance", which, however, will lead to more intense heating. For professional monitoring during the game, it is better to use third-party overlays if they support output on top of other windows.
The normal operating temperature of a Snapdragon or Dimensity processor under full load is a range of 40 to 45 degrees Celsius. Exceeding the 50 degrees mark usually leads to a decrease in screen brightness and a drop in FPS. If your phone heats up to 60 degrees or higher, this is a signal of problems with heat sink or background processes.
Analysis of causes of processor overheating
Understanding the causes of heat helps prevent it. The main reason is the background activity of applications that have not been closed correctly. Social networks, navigators and messengers can consume GPS resources and networks, causing temperature spikes. Heat often provokes a poor cellular signal, as the modem begins to work at increased power.
Another factor is the wear of the thermal paste or thermo-layer inside the case, especially on devices older than 3-4 years. Dust trapped in the speakers and connectors, worsens the natural convection of air. In summer, direct sunlight can heat the case faster than the processor has time to remove heat.
| Temperature range | Status of the system | Recommended action |
|---|---|---|
| 30°C - 38°C | Normal (Simple/Easy tasks) | No action required |
| 39°C - 45°C | Load (Games/Navigation) | Remove the case, check background processes |
| 46°C - 50°C | High load / Trotling | Reduce the settings of the schedule, take a break |
| Above 50°C. | Critical/Dangerous | Turn off the screen immediately, cool the device |
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A short-term temperature jump to 45-48 degrees when you start a heavy game is normal, and the danger is a consistently high temperature at rest.
Xiaomi’s effective cooling methods
If you find that the processor temperature of your Xiaomi is consistently high, you need to take action. The easiest and most effective way is to remove the protective case, especially if it is made of dense rubber or leather, this will improve heat transfer with the environment. It is also recommended to reduce the brightness of the screen, since the matrix is the second most powerful heat source after the processor.
Using external coolers for smartphones (fan radiators) is becoming the standard for mobile gaming. Such devices, connected via USB Type-C or magnetically based, are able to remove up to 10-15 watts of heat, keeping the processor in a comfortable range even in the most severe scenes.
⚠️ Warning: Never put a heated phone in the fridge or freezer! a sharp temperature drop will cause condensation inside the case, which will short circuit and corrosion of the board.
Software methods are also effective. Go to the battery settings and limit background activity for applications you're not using right now. Enable Power Saving mode, which will forcefully limit the maximum CPU frequency, sacrificing performance for the sake of lowering temperature.