How to find out the temperature of the Xiaomi smartphone: a full guide to diagnosis

Overheating of a mobile device is a problem that Xiaomi owners often face, especially when using resources intensively. Understanding how to know the temperature of a Xiaomi smartphone becomes critical to extending the life of the gadget and preventing sudden outages. High values can indicate background processes, battery failure, or even the beginning of the degradation of the motherboard.

Modern Snapdragon and MediaTek processors installed in Redmi and Poco phones operate in a wide range of temperatures. However, the user needs to clearly distinguish between working heat when running heavy games and critical overheating in downtime. In this article, we will examine all available monitoring methods, from hidden engineering menus to third-party software.

Timely detection of abnormalities in thermal mode avoids costly repairs. If you notice that the device body has become unpleasantly hot and the autonomy has plummeted, then it's time to conduct a deep diagnostic of the system. We'll look at both the software and hardware aspects of heating.

Normal temperature indicators for Xiaomi

Before you panic and look for cooling, you need to understand what is the norm for modern electronics: the temperature inside the case is always higher than outside, and depends on many factors, including the material of manufacture of the back cover.

When the screen is at rest, when the screen is turned off and only system processes are started, the temperature should not exceed 30-35 degrees Celsius. When used actively, for example, while watching videos or surfing the Internet, heating to 40-42 degrees is normal. Higher rates require attention.

⚠️ Note: If the body temperature exceeds 45 degrees Celsius in downtime, this may indicate a malfunction of the power controller or the presence of malware mining cryptocurrency in the background.

The critical area for the processor is the range above 80 degrees, although modern chips are protected and begin to reset frequencies (trottle) earlier. For the battery, the dangerous threshold is a value of 50 degrees, after which accelerated degradation of chemical composition begins.

It is important to consider that sensors built into MIUI or HyperOS can show averaged values. Different areas of a smartphone (the upper part of the camera, the lower part of the charging connector) can have different temperatures due to the location of the components, so rely on the readings of specialized software that can read data from specific sensors.

Using CIT's Hidden Engineering Menu

The most reliable and quick way to access technical data without installing third-party programs is using the CIT (Customer Integration Test) engineering menu, which is built into the firmware of every Xiaomi smartphone and is designed for factory diagnostics, but is also available to ordinary users.

To enter the menu, you need to open the standard Phone app and dial a special combination of characters. In most cases, the code ##64663## or ##6484## works. Once you dial the last digit, the menu will open automatically, without having to press the call button. If the code did not work, your operator or provider may have blocked this feature, and then you will have to use alternative methods.

In the test list that you'll see, you'll find a temperature item that's called Version, Thermal, or Temperature. And if you go to this section, you'll see a list of all the sensors: battery, cpu), pa_thermal (The values are updated in real time, which allows you to track the dynamics of heating.

The advantage of this method is that it shows raw sensor data that is not distorted by the shell interface. However, the CIT interface can look intimidating to beginners because of the abundance of technical terms in English, the main thing here is not to press the Fail or Start button in other tests, so as not to run the hardware check by accident.

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CIT’s engineering menu is a native Xiaomi tool that does not require root rights and gives access to the most accurate data from the device’s sensors.

Verification through settings and standard applications

The MIUI shell and the new HyperOS provide users with basic monitoring tools that do not require deep technical knowledge. The Security app, which is pre-installed on all devices of the brand, has a Battery section, and you can see not only the percentage of charge, but also the approximate level of heating, although the exact number in degrees is rarely displayed there.

To get more detailed statistics through standard tools, you can use the About Phone menu. By clicking multiple times on the MIUI kernel or OS version, you can activate advanced logs, but this does not work on all models. A more effective way is to use desktop widgets. Some design themes and system widgets allow you to display the current battery temperature on the home screen.

To access the hidden animation and statistics settings, you can use the developer menu. To activate it, you need to go to Settings → About phone and quickly click on the MIUI version 7 times. Then the "Additional" section will appear in the "Developers" section. You can find loggers that sometimes display thermal data, but this method is more for advanced users.

It's worth noting that standard tools often show average temperature or hide it altogether to avoid scaring the user. If your phone is working properly, the system won't scream about overheating, but if you feel obvious discomfort when using, you should only trust third-party apps or engineering menus.

Third-party monitoring applications

If built-in tools are not enough, a huge range of applications from Google Play comes to the rescue. The leader in this area is already CPU-Z. This application provides comprehensive information about the SoC (system on a chip), including the temperature of each processor core, battery temperature and battery charge.

Another powerful tool is AIDA64, which is a professional diagnostic software that shows data from all the sensors available. In the "Thermometers" section, you'll see a list of all the sensors with their current readings. The app also knows how to plot temperature changes over time, which is useful for analyzing heat in long game sessions.

• 📱 CPU-Z: Lightweight, free app that shows the temperature CPU, Battery and charge. Perfect for quick checks.
• 📊 AIDA64: Professional tool with detailed report on all components, including light sensors, proximity sensors and thermal sensors.
• 🔋 AccuBattery: Specializes in battery health, but also shows the current charge temperature, which is critical for extending battery life.
• 🎮 GameBench: A utility for gamers that shows in real time FPS, loading CPU/GPU and the temperature during the game.

These programs have their own nuances: they work in the background and can consume resources by themselves, slightly raising the temperature. So after measuring the indicators, it is better to completely close (unload from memory) these applications, and be careful with advertising in free versions, which can pop up at the wrong time.

⚠️ Warning: Avoid apps with names like "Cooler Master" or "Phone Cooler" that promise to software cool your phone, at best, just shut down background processes, at worst, they're adware and virus carriers.

Diagnostics through computer and ADB

For users who want to get the most accurate data and have access to a PC, the ideal option is to use ADB debugging (Android Debug Bridge), which allows you to read data directly from the system without loading on the smartphone interface. You will need to install ADB drivers on your computer and enable USB debugging on your phone.

Once you've connected the device over the cable and authorized the debugging, you can run a command in the command line on the computer to output battery information, and this will give you a dry technical report that will give you an accurate temperature in tenths of a degree, which is the most reliable method, because it eliminates any software distortion.

adb shell dumpsys battery

In the output, you need to look for the temperature bar, which is not decimal (e.g. 350 is 35.0 degrees), a method that engineers and enthusiasts often use to test the stability of the device under load, and you can run stress tests through ADB and simultaneously take sensor readings.

The challenge with this method is to set up the environment initially, and it may seem redundant for a one-time temperature check, but if you're testing or flashing, ADB skills are a must, giving you full control of the device and access to logs that are not available to the average user.

Causes of overheating and methods of prevention

Understanding how to measure temperature is useless without knowing why it is going up. The main heat source in a Xiaomi smartphone is the processor. When performing complex calculations (games, navigation, recording 4K video), it releases a lot of energy. The second reason is charging, especially fast, which chemically heats up the cells inside the battery.

External factors also play a huge role: using the phone in direct sunlight, in a dense case of thermal insulation materials (skin, thick silicone), or in high ambient temperatures inevitably leads to overheating, the heat simply does not have time to dissipate into the environment.

• ☀️ Sunlight: Direct rays heat the case faster than the processor.Never leave your phone in the sun.
• 📱 Case: Remove a tight case while charging or heavy games to improve heat sink.
• 📶 Bad Signal: Network Search 4G/5G makes the modem work at the limit, which greatly warms the lower part of the smartphone.
• 🔄 Background: "Hangover" applications can load the processor even in your pocket.

For prevention, it is recommended to regularly clean the charging connector from dust, as poor contact can cause local heating. It is also worth keeping an eye on system updates: Xiaomi developers often release patches that optimize the power controller and improve temperature management algorithms.

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If the phone is heated, don't put it in the refrigerator! A sharp temperature drop will cause condensation inside the case, which will lead to a short circuit, it is better to put it on a cool surface (stone, tile) or point a fan at it.