Why Xiaomi Redmi 8 is overheating and when it’s dangerous
Smartphone Xiaomi Redmi 8, released in 2019, still remains a popular budget device due to the balanced characteristics: Snapdragon processor 439, 3/4 GB of RAM and battery 5000 mAh. However, owners often face the problem of overheating - especially under prolonged loads or in hot weather. The normal operating temperature for this device is 30-45 ° C, but with intensive use it can rise to 50-60 ° C, which already causes discomfort and the risk of trottling (automatic performance decline).
Overheating is not always critical: for example, during charging or playing PUBG Mobile at high settings, heating to 48-52 ° C is considered acceptable. But if the phone is heated for no apparent reason (for example, in standby mode) or the temperature exceeds 60 ° C, this is a signal of possible problems: from a dusty cooling system to a faulty battery.
Top.-5 Causes of Redmi overheating 8: What to check first
Before you cool your phone, it’s important to understand the root of the problem, and here are the most common reasons why the Redmi 8 might turn into a hot potato:
- 🔥 Background processes and viruses: Applications running in hidden mode (especially mining bots or ad modules) can load the processor at 100%. → Battery → Battery utilization.
- 🎮 Games and heavy apps: Snapdragon 439 is not designed for modern games at maximum settings.
- 🔋 Charging and battery: Fast charging (if a non-original adapter is used) or a worn-out battery (capacity below 70%) often leads to overheating. Check battery status via ##4636## # (menu Battery Information).
- 🌡️ External conditions: Direct sunlight, ambient temperature above 30°C, or using the phone in a closed case impairs heat transfer.
- 🛠️ Hardware problems: Dust in the charging connector, detached thermopaste on the processor or damaged display plume - all this can disrupt the thermal balance.
If overheating is accompanied by spontaneous reboots, switching off when charging or artifacts appear on the screen, these are signs of serious malfunctions, in which case software cooling is useless - diagnostics are required at the service center.
Emergency cooling methods: what to do right now
If your phone is already hot and you need to reduce the temperature, use these methods (from the fastest to the slowest):
- Turn off the device for 10-15 minutes, stop all processes and allow it to cool naturally. If the phone does not respond to the power button, perform a forced reboot: press Power + Volume up for 10 seconds.
- Remove the case and place the phone on a cold metal surface (such as an aluminum lid from a laptop). Do not use ice or a refrigerator - a sharp temperature drop can cause condensation inside the case!
- Turn off the charging and take it out. SIM-A memory card or card, sometimes caused by a faulty communication module or a damaged flash drive.
- Activate the aircraft mode for 5-10 minutes, which will turn off all radio modules (Wi-Fi, 4G, Bluetooth), which are often the source of heating.
☑️ Emergency cooling Redmi 8
If the temperature does not drop below 40°C for 30 minutes, the problem is likely hardware. For example, in 15% of cases of overheating of the Redmi 8, the fault is the detached graphics chip (symptom: the phone warms even when it is turned off), in which case only repairs using infrared soldering will help.
⚠️ Warning: Never blow your mouth or hair dryer on your phone! This can drive dust deeper into the body and damage the speakers. Use a can of compressed air to clean the connectors (keep 10 cm away).
Software methods of reducing temperature
If overheating is not critical, but interferes with comfortable use, optimize the system with these settings:
1. Limitation of productivity
Redmi 8 has a hidden processor clock limiting feature that helps reduce heat without seriously damaging your speed:
- Activate Developer Mode: Go to Settings → About Phone and click on MIUI Version 7 times.
- Back to Settings → Additionally. → For developers.
- Find the item Limit background processes and select Without background processes.
- In the same menu, turn off Windows Animation and Transition Animation (reduce the load on the GPU).
2. Optimization of autoloading
Many applications are launched at the start of the system and run in the background, loading the processor, to turn them off:
- Go to Settings → Applications → Autorun.
- Turn off auto-run for all applications except system (e.g. Phone, Messages).
- In Battery → Battery Optimization, select Strict Optimization for all unnecessary applications.
3. Use of specialized utilities
Apps like CPU Monitor or Coolify (available on Google Play) allow real-time temperature monitoring and automatic shutdowns of voracious processes, but beware: some coolers consume a lot of resources and contain ads.
| Annex | Functions | Cons |
|---|---|---|
| CPU Monitor | Monitoring temperature, CPU/GPU loads | No automatic cooling. |
| Coolify | Closes the background processes, cools the battery | Advertising requires root for full functionality |
| Greenify | Hybernation of unnecessary applications | It's hard to set up without root. |
⚠️ Note: Do not install apps that promise “instant cooling by 20.”°C is a fraud. The only real way to reduce the temperature of software is to reduce the workload on the processor.
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If the phone warms up after the MIUI update, try to roll back to the previous firmware version via Fastboot. Instructions are available on the 4PDA forum in the Xiaomi Redmi 8 theme.
Hardware solutions: when software methods do not help
If all of the above methods fail, the problem lies in the hardware. Here's what you can do yourself (or with the help of a wizard):
- 🔧 Dust cleansing: Take your phone apart (or call the service) and blow your insides with compressed air. Pay special attention to the area around the processor and battery. Dust acts as a heat insulator.
- 🔋 Thermopaste replacement: Over time, the thermal interface between the processor and the radiator (if any) dries. Applying a new paste (e.g. Arctic) MX-4) can reduce the temperature by 5-10°C.
- 📱 Battery replacement: If the battery is swollen or its capacity has fallen below 60%, it can overheat even with minimal load.The original battery for the Redmi 8 costs about 1500-2000 rubles.
- 🛡️ Installation of the radiator: For extreme cases (for example, gamers) you can glue a copper plate to the back cover or use an external cooler with a cooler. USB-feeding.
If you are not sure about your skills, it is better to contact the service, for example, replacing thermopaste requires care: if applied incorrectly, the paste can get on the contacts and cause a short circuit, the average cost of such a service in Moscow is 800-1,500 rubles.
What to do if your phone warms up after a fall?
How to Prevent Overheating in the Future: Prevention
The best way to combat overheating is to prevent it. Follow these guidelines to keep the Redmi 8 running smoothly:
- 🌞 Avoid direct sunlight: Don't leave your phone on a car torpedo or windowsill in summer.Ultraviolet not only heats the body, but also spoils the screen.
- 🔌 Use the original charger: Chargers with higher power 18W (For example, from Redmi Note 10 can cause overheating of the battery.
- 🎮 Limit game time: Sessions longer than 40 minutes load the processor. Take breaks or use game boosters (e.g. Game Turbo in the game). MIUI).
- 🧹 Clean connectors regularly: Dust and debris in the charging connector or 3.5mm audio impair heat transfer. Use a wooden toothpick to clean.
- 📱 Update the firmware: In new versions MIUI Frequently fix bugs that cause increased workload on the processor. → The phone. → Updating the system.
If you play or edit video on your phone often, consider buying an external cooler (such as Black Shark FunCooler Pro), which connects via USB-C and reduces the temperature by 10-15 °C due to active blowing.
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Regular cleaning of connectors and updating of firmware can prevent up to 70% of cases of overheating associated with software failures or dust.
Myths about cooling smartphones: what not to do
You can find a lot of cooling tips on the Internet that are not only useless, but also dangerous.
- ❄️ «Put your phone in the refrigerator": "A sharp temperature drop can cause condensation inside the case, which will lead to corrosion of contacts. Maximum - put on a cold metal surface.
- 💨 «Blow a hairdryer on your phone": "Hot air will only make the problem worse. If you want to blow the connectors, use a spray of compressed air.
- 🔄 «Frequent reboot will cool the phone": "Repeat reboots wear out flash memory. Just turn off the phone for 10 minutes 1-2 times a day.
- 🛠️ «Apply the thermopaste yourself without experience": Without special skills, you risk damaging plumes or pouring paste into the motherboard.
- 📴 «Disable all apps": Some system processes are critical to the phone's operation.Switching off everything can cause crashes.
Also, don't believe the ads for "magic" cooling stickers or liquid cooling systems for smartphones, most of them are a waste of money. The only really working accessories are metal cases with stiff ribs (like Spigen) and external coolers.