Have you noticed that your Xiaomi smartphone has become unbearably hot, and the Mi Band smartwatch is switched off from overheating? Or the Xiaomi Router “choked” in the heat? Overheating is one of the most common problems of the brand’s technology, and ignoring it is dangerous: it reduces battery life, reduces performance and can lead to irreversible breakdowns. In this article, we will discuss 7 proven ways to reduce the temperature of Xiaomi devices – from software settings to hardware solutions, and also find out when overheating is the norm and when the signal of malfunction.
It’s important to understand that the temperature of Xiaomi devices depends on the model, load and environment. For example, smartphones on Snapdragon 8 Gen 2 processors (like Xiaomi 13 Ultra) are warmed by the budget Redmi Note 12 due to high performance. And Xiaomi Smart Speaker speakers can overheat in stuffy rooms, and we've compiled the latest techniques for all types of devices, from phones to IoT gadgets, with the latest updates. MIUI 15 and HyperOS.
1. Normal temperature vs. critical overheating: when to sound the alarm
Before you lower the temperature, you need to know if there is a problem. Xiaomi devices have acceptable heating ranges:
- 📱 Smartphones: 35-45°C for active use (games, video shooting), up to 50°C is short-term. Over 55.°C – critical overheating requiring immediate action.
- ⌚ Smartwatches (Mi Band 8, Watch 2 Pro): up to 40°C when charging, above 45°C = risk of battery damage.
- 📶 Routers (Xiaomi Router 6, AX3600): 50–60°C is the norm for high load, but over 70°C = risk of fire.
- 🔊 Smart Speaker (Xiaomi Smart Speaker): Up to 50°C at maximum volume, above - distortion of sound.
How to check the temperature? Xiaomi smartphones have a hidden menu: dial in the phone application ##4636##, then select Battery Information. For other devices, use third-party apps (for example, AIDA64) or embedded sensors in MIUI (Settings → The phone. → Battery status).
⚠️ Note: If the smartphone temperature exceeds 60°C, and the screen displays a warning "Device overheated" - immediately turn it off and let it cool in the shade.
| The device | Normal temperature (°C) | Critical temperature (°C) | Signs of overheating |
|---|---|---|---|
| Xiaomi 13/14 Pro | 35–45 | 55+ | Slowing, turning off, warning on screen |
| Redmi Note 12 | 30–40 | 50+ | Hot hull, quick discharge. |
| Mi Band 8 | 40 | 45+ | Disconnection, synchronization errors |
| Xiaomi Router AX6000 | 50–60 | 70+ | Communications breaks, the smell of burning |
2. Software methods: how to reduce the temperature without disassembling the device
In 80% of cases, Xiaomi overheating is eliminated by setting up the system, starting with the safest and fastest ways.
2.1 Background optimization and process limitation
Background applications are the main resource eater. MIUI HyperOS has built-in tools to control them:
- Go to Settings → Applications → Application Management.
- Select AutoRun and disable autoboot for unnecessary programs (especially instant messengers and social networks).
- In Battery and Performance, activate Energy Saving or Balanced.
For advanced users: use them. ADB, to disable background activity of system applications (such as Mi Video or GetApps:
adb shell cmd appops set com.xiaomi.video android:run_in_background ignoreLimitation of processor performance
Xiaomi smartphones on Snapdragon or MediaTek often overheat due to the maximum clock speed of the cores. Reduce it using the Performance Control app (root rights required) or through the engineering menu:
- 🔧 Type #36446337## (for MediaTek) or #4636## (for Snapdragon).
- 📉 In the section CPU Reduce the maximum frequency by 20–30% (e.g., from 3.2 GHz to 2.5 GHz).
⚠️ Attention: Decreasing CPU frequency will reduce performance in games and benchmarks. Do not use this method if you want maximum power.
Updating firmware and core
The manufacturer regularly releases patches to optimize heat output.
- Go to Settings → About the phone → System update.
- If you have a new version of MIUI or HyperOS, install it.
- For manual updates, download the firmware from the official website and stitch through Recovery.
Updates are especially critical for devices with MediaTek Helio processors (for example, Redmi). 10A), where overheating problems are often solved at the core level.
Close all background applications|Shut down. Bluetooth/Wi-Fi, if not used|Check the temperature in AIDA64|Update the firmware to the latest version|Reset network settings (if the router overheats)-->
3. Hardware solutions: cooling without harm to technology
If the software methods haven't worked, it's time to move to the physical ones, which are more effective, but they need to be careful.
Correct cooling of the shell
Don't put your smartphone on soft surfaces (blanket, sofa) - they block the ventilation.
- 🧊 Cooling stands with fans (for example, Baseus Cooler).
- 📱 Heat sink covers (metal or graphite).
- ☀️ Protection from direct sunlight – even 5 minutes in the sun can heat the body up to 50°C.
For Xiaomi routers, provide free space around (at least 10 cm) and install it vertically. If the device is hanging on the wall, check if the vents are closed.
Dust cleaning and thermal paste replacement
Dust and dried thermopaste are the main reasons Xiaomi overheats after 2-3 years of use.
- Turn off the device and remove the battery (if possible).
- Use a soft brush or compressed air can to remove dust from connectors and vents.
- To replace the thermopast on the processor (relevant for routers and smart speakers) use Arctic MX-4 or KPT-8.
In smartphones, thermopaste is applied to the chipset and memory modules, and replacing it will require a complete dismantling — if you do not have experience, you should contact the service center.
What happens if you don’t clean the device of dust?
Use of external coolers
For gamers and users who often run heavy apps (such as Genshin Impact or Call of Duty Mobile), the following are suitable:
- 🎮 USB-Type C game coolers (e.g. Black Shark Cooler 5 Pro).
- 💻 Laptop stands with fans (suitable for routers).
- 🔋 Battery coolers (e.g., batteries, ZMI Fan) for smart watches.
Important: Do not use coolers with high rotation speed (more than 3000 rpm) - they can suck dust into the device.
4.Overheating while charging: why it happens and how to fix it
Many Xiaomi users experience a phone or watch warming up while charging, which is normal if the temperature is below 40-45.°C. If the body becomes hot, the problem may be:
- 🔌 Non-original charger (especially with power above 33 watts).
- 🔋 Worn-out battery (capacity below 80% of nominal value).
- 📱 Background processes (synchronization, updates).
Decisions:
- Use the original Xiaomi RAM (e.g. Mi Charge Turbo) 67W).
- Turn off Fast Charging in Settings (Settings) → Battery → Charging settings).
- Charge the device in aircraft mode or with the screen turned off.
⚠️ Warning: If the battery is swelling (the body is deformed), immediately stop charging and contact the service!
💡
Before charging the smart watch Mi Band remove them from your hand and put them on a flat surface – this improves heat transfer and reduces the temperature by 5-10°C.
5. Overheating of Xiaomi routers: specifics and solutions
Xiaomi routers (for example, AX3600 or Router 4A) They are often overheated because of:
- 📡 High load (many connected devices, torrents).
- 🏠 Poor ventilation (installation in the closet or next to the battery).
- 🔄 Outdated firmware (bugs in power management).
How to lower the temperature:
- Update the firmware via the router's web interface (192.168.31.1).
- Limit the number of connected devices (optimally up to 15).
- Install the router vertically on an open surface.
- Use the external USB-fan (connects to the router port).
If the router is warming even without load, check it for viruses (for example, through Merlin Firmware) – some malware uses the resources of the router for mining.
6.Overheating of Xiaomi smart watches and fitness bracelets
Xiaomi Smart Watch (Watch) 2 Pro, Mi Band 7/8) warm up:
- ⚡ Fast charging (especially wireless charging).
- 🏃 Continuous monitoring of heart rate (sensor is working) 24/7).
- 🌡️ Heat or humidity (for example, in a sauna).
Cooling methods:
- Turn off Continuous Heart Rate Monitoring in the clock settings.
- Charge the bracelet at room temperature (20–25)°C).
- Remove the watch if you feel a burning sensation on the skin – this is a sign of local overheating of the sensors.
If the Mi Band is warming up even when it's off, it's a sign of a battery failure. Replace it at a service center (cost around 1,000-1500). ₽).
7. When overheating is a symptom of breakdown
If none of the methods helped, and the device is heated even in standby mode, hardware malfunctions are possible:
| Symptoms. | Possible cause | Decision |
|---|---|---|
| Overheating + quick-load | Battery wear and tear | Battery replacement |
| Only the top of the smartphone is heated. | Failure of the camera or module 5G | Diagnostics in the service |
| The router shuts down when heated | Failure of capacitors | Repair or replacement |
| The clock is warming and not synchronizing | Damage to the motherboard | Replacement of the device |
For diagnosis, use:
- 🔍 Test modes (e.g. ##6484## for camera checks).
- 🛠️ Service centers (official partners of Xiaomi provide free diagnostics).
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If the device is not warmed evenly (for example, only in one corner), this almost always indicates a local malfunction (damaged chip, detached thermopaste).