Many owners of the Redmi series of smartphones face the problem when the device body becomes noticeably warm and performance drops. Xiaomi Redmi 8T model, equipped with a Snapdragon 665 processor, is known for its energy efficiency, but even it is not immune to overheating under intense loads or in hot weather. elevated temperature adversely affects the speed of the MIUI operating system and can lead to accelerated wear of components.
In this article, we will discuss the causes of excess heat and provide proven methods for solving this problem. Critical overheating is not just discomfort when holding a gadget in your hands, but also a signal that the system needs help to stabilize work processes. Understanding the physical principles of your device will be the first step to fix the malfunction.
We’ll look at both the software settings and the physical cooling options that you can apply right now, and it’s important to distinguish between normal heating when charging or playing and abnormal system behavior that requires intervention. Below are specific instructions to help bring your Redmi 8T back to a comfortable temperature.
The main reasons for the heating of the smartphone Xiaomi
Before we get to the point of taking action to reduce the temperature, we need to understand the source of the problem: the processor is the main heat generator inside the housing, and heating it is a natural result of performing calculations. However, there are factors that make the chip run at its limits or prevent normal heat removal.
One common cause is application background activity. Even when the screen is off, some programs may continue to consume resources while loading the CPU. In addition, a poor cellular signal causes the modem to operate at increased power, which also contributes significantly to the overall thermal balance of the device.
- 📱 Intensive use of graphically heavy games or video editors.
- 📡 Working in an unstable network coverage area 4G/LTE.
- 🔋 Simultaneous fast charging and navigation.
- 🧱 Use of a tight cover blocking heat transfer.
External factors such as direct sunlight or high ambient temperatures are also considered to be critical for lithium polymer batteries, and temperatures above 45°C are considered critical.
⚠️ Warning: If the phone is heated in standby mode when the screen is off and a minimum of apps are running, this could indicate a motherboard malfunction or battery bloating.
Software Methods of Optimization of MIUI System
The MIUI Operating Shell provides users with powerful tools to control device resources, and the first step is to identify glutton applications that consume energy in the background, and then go to the settings and find the battery and performance section.
The system optimization menu often features memory cleanup and background closure, which helps reduce the workload on RAM and CPU, and it is also recommended to disable auto-update applications in the background, especially if you are roaming or using mobile Internet.
☑️ Checklist of fast optimization
Also, visuals that make the interface look more beautiful, but load the graphics accelerator, such as turning off animations in the Developer Menu or choosing a theme without dynamic wallpaper, can significantly reduce heat generation in everyday use cases.
- 🛑 Limit background activity for rarely used applications.
- 🎨 Remove the live wallpaper and widgets from the main screen.
- 📶 Turn off your Wi-Fi network search if you don’t use it.
⚠️ Note: Installing cleaners and accelerators from third-party sources often backfires, as they consume resources and display intrusive advertising.
Charging rules for reducing temperature
The battery charge process is always accompanied by heat generation due to chemical reactions inside the cells. The Xiaomi Redmi 8T uses fast charging technology that can significantly heat the case when using the original adapter. To minimize this effect, try not to use your smartphone while connecting to the network.
If you notice that the device has become hot, it makes sense to remove the protective case while charging.Dense materials such as silicone or leather create the effect of a thermos, keeping the heat from going out.Removing the case will improve air convection around the case.
💡
Use a lower power charger (e.g. 5V/2A instead of Quick Charge) if you need to charge your phone at night and the speed is not critical, this will reduce heat.
Also important is the condition of the charging cable: damaged or substandard cables can have high resistance, resulting in energy loss and additional heating in the area of the connector. Always use certified USB Type-C accessories.
| Type of activity | Normal temperature | Critical temperature | Operation of the system |
|---|---|---|---|
| Conversation / Social media | 30-35°C | 42°C | Decrease in brightness |
| Games/Navigation | 35-40°C | 45°C | Trottling (frequency reset) |
| Fast charging. | 35-42°C | 48°C | Stopping charging |
| Direct sunlight | 45°C | 50°C+ | Emergency shutdown |
Physical ways to cool the device
When software is exhausted, the physical laws of heat transfer come to the rescue, and the simplest and most affordable way is to use high-conductivity surfaces, put your smartphone on a glass, stone, or metal table, and these materials quickly take heat from the back of your gadget.
In emergency cases, when the phone overheats and refuses to work, you can use the airflow from the fan. Forced convection effectively knocks down the temperature in a matter of minutes. However, you should avoid using a refrigerator or freezer.
Why can't you put your phone in the fridge?
There are special accessories like smartphone coolers that are mounted on the back and run from the built-in battery.For Redmi 8T owners who often play PUBG or Call of Duty, this can be a great investment solution for comfortable gaming.
- ❄️ Use coolers with an active fan for games.
- 🪨 Place the device on cold surfaces (tiles, glass).
- 💨 Blow the body with a fan or a regular fan.
⚠️ Warning: Never put your smartphone under direct air conditioning beams.Sharp local cooling can damage the screen or cause microcracks in the glass.
System maintenance and software update
Xiaomi developers regularly release firmware updates that often contain optimization bug fixes. If your Xiaomi Redmi 8T started warming up after the last update, it may be doing background file indexing, in which case it is worth waiting a day or performing a full reset.
Cleaning the application cache also helps reduce the workload on the processor: accumulated temporary files can cause conflicts and cyclical processes that unobtrusively eat up resources.
Check if the device is running a mining process or viral activity. Some malware masquerades as system processes and uses the computing power of the phone for their purposes, causing constant heating even in the simple.
💡
Regularly updating MIUI to the latest stable version is the best way to get the processor’s thermal mode fixes from the manufacturer.
When you need to contact the service center
If none of the above methods worked, and the phone continues to heat up to a point where it can’t be held in your hands, there’s a hardware malfunction that could be battery degradation, dry heat paste between the processor and the screen, or a short circuit in the power chain.
Self-repairing modern smartphones is complicated by the tight layout and use of adhesive joints. Trying to disassemble the Redmi 8T without experience can damage the plumes or body, in which case it is better to entrust the diagnosis to specialists.
Note the behavior of the charging indicator. If the phone warms up at the charging connector even when it is off, it almost guaranteed to indicate a problem with the power controller or the USB Type-C connector itself.
- 🔥 Heating is localized at one point (e.g., only at the camera or connector).
- 🔋 The phone is quickly discharged in standby mode.
- 📉 There is a sharp drop in productivity and frequent hangings.