Redmi 4 smartphones, including the Pro and Prime versions, have earned a reputation for being “people’s” devices due to their combination of price and performance. However, models released several years ago are beginning to experience difficulties with heat removal, especially when running modern applications. High body temperature is not just a discomfort when touching, but also a signal that the internal components are working at their limits, which can lead to trottling or battery damage.
Owners often notice that the gadget heats up during charging, video calls or games. The Snapdragon processors installed in these models are sensitive to heat. If you encounter a situation where the phone has become hot, you need to immediately identify the cause, this can be a software failure, and physical wear of the thermal interface or battery.
In this article, we will discuss in detail the algorithms for reducing the temperature of your device. We will look at the software settings of the MIUI shell, check the background processes and touch on physical cooling methods. The right approach will help return the device to a comfortable operation and prolong its life.
Diagnostics of the causes of overheating Xiaomi Redmi 4
The first step is always to make a good diagnosis. You can't just put your phone in the refrigerator, it can condensate and kill the board, you have to figure out what's causing the heat, and most often the culprit is a processor that can't do the background stuff, or a battery that's lost its capacity.
The MIUI has built-in monitoring tools. Look in the statistics section to see which app consumes the most power. If you see Facebook or Instagram running in the background for hours, that's the heat source. It's also worth checking the battery status through the engineering menu.
For deep testing, you can use third-party utilities, such as AIDA64 or CPU-Z. They will show the current temperature of each processor core and battery voltage. The normal operating temperature is between 30 and 40 degrees Celsius. If the readings are above 45-50 degrees in idle mode, urgent intervention is required.
⚠️ Warning: If the phone gets heated to a point where it hurts to hold it in your hand, or if a critical temperature is reported, turn off the device immediately.
Optimization of the software part and settings MIUI
Software is the first line of defense against overheating, and Xiaomi Redmi 4 owners should start by turning off unnecessary features that constantly scan space and load the processor, and even if you don't use them, the communication modules keep working.
Go to the settings and turn off GPS, Bluetooth and NFC if you don't need them right now. Also worth checking your sync settings. Constant uploading photos to the cloud or updating your email can keep the processor active. Use Power Savings mode, which automatically limits background activity.
The important thing is to update the system itself. Xiaomi developers periodically release patches that fix optimization errors. Go to Settings → About Phone → Update the system and check for new versions of the software. Sometimes the problem lies in a specific bug version of MIUI that has already been fixed.
☑️ Checklist of fast optimization
Management of Background Processes and Applications
One of the main reasons Redmi 4 is warming up is its unoptimized software, and some apps, especially social media and instant messengers, tend to bloat and consume resources even when they are rolled up, and controlling them is the key to cooling.
Use the built-in Security feature to freeze applications. You can set up automatic back-end limits for programs you rarely use, which will prevent them from running hidden and reduce the CPU load.
If you notice that the heating started after you installed a particular program, try removing it and monitoring the temperature. Often the culprits are "optimizers" and "accelerators" from third-party sources, which create the load themselves. Trust only Xiaomi system tools.
Hidden Developer Settings
Physical cooling methods and device care
When software is exhausted, physical methods come to the rescue. The Redmi 4 is made of metal, which helps heat sink, but also heat from external sources. Never leave your phone in direct sunlight or on the dashboard of a car.
Remove the protective case during heavy use or charging. Tight silicone or leather cases work like a thermal insulator, locking heat inside the device. The metal back must breathe to effectively dissipate heat from the processor and battery.
In emergency cases, you can use external cooling, but with caution. Don't put your phone in the freezer! A sharp temperature drop will cause condensation inside the case, which will lead to a short circuit. Better direct a weak flow of air from the fan to the device or simply put it on a cold tile surface.
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If you use a navigator in your car, fasten your phone so that air from the air conditioner deflector blows on it. This is the most effective way to keep the temperature low during long trips.
Effects of charger and battery
Charging is a process that is always accompanied by heating. Xiaomi Redmi 4 uses fast charging technology that generates additional heat. If the phone is hot, it is better to turn off the fast charging function if it is active, or use a less powerful power supply (1A instead of 2A).
Battery wear is a natural process. Over time, the internal resistance of the battery increases, and it starts to warm up more when charged and discharged. If your device is over 3-4 years old, the battery probably has run out of power and needs to be replaced.
Use only original cables and power supplies. Cheap market counterparts often lack security controllers and can deliver unstable current, causing the power controller on the board to overheat, one of the common causes of smartphone failure.
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Using a non-original charger is the most common cause of critical overheating and battery bloating in Xiaomi devices.
Table of normal and critical temperatures
To understand the state of your device, it is useful to know the threshold values. Below is a table that will help you navigate when to worry and when the phone is working normally.
| Status of the device | Temperature range (°C) | Recommended action |
|---|---|---|
| Standby regime | 25 – 32 | Norm, no action required. |
| Active use (browser, social networks) | 33 – 39 | Norm of allowable heating |
| Heavy games/charge | 40 – 45 | Remove the cover, provide air flow |
| Critical heating | 46 – 50+ | Stop work immediately, turn off the screen |
Radical measures: Resetting and reflashing
If none of the above methods worked, and the Xiaomi Redmi 4 continues to bask even in the menu, it may be that deep system errors or file conflicts are the problem, in which case a complete data reset will help.
Before the procedure, be sure to back up all important data to your computer or the cloud. Reset will return the device to factory status by removing all accumulated software debris. Go to Settings → Advanced Settings → Recovery and Reset → Reset.
In extreme cases, if the reset did not help, you may need to flash the device through the computer using the Mi Flash Tool utility. This is a complex process that requires accurate follow-up to the instructions, but it allows you to completely install the latest version of the system, eliminating software errors.
⚠️ Warning: Before performing a full reset, make sure that the battery is at least 50%. Interrupting the reset process due to discharge may make it impossible to turn on the phone.