Xiaomi phone is very warm: what to do and how to prevent overheating

Why Xiaomi Phone Heats Like an Iron – and When It’s Normal

You’ve noticed that your Xiaomi (be it Redmi Note 12) is a great choice, POCO X5 Is the flagship Mi 13 Ultra getting hotter than usual? Is the body hot even with minimal load, and the battery goes down in a matter of hours? Is overheating one of the most common complaints of Xiaomi smartphone users, but it is not always associated with breakdown. Half of the time, settings, background processes or banal pollution are to blame.

Before you panic and bring your phone to the service center, you need to know what temperature is normal and when to sound the alarm, like when you play Genshin Impact or when you record a video in the service center. 4K Snapdragon 8 Gen 2 processor can be heated to 45-50°C is acceptable. But if Redmi is. 10A simple-helio G25 warm up to 40°C in standby mode, this is a signal of a problem. In this article, we will analyze 12 causes of overheating (from software to hardware), give checklists for diagnostics and instructions for elimination - taking into account the features of the firmware. MIUI and Xiaomi's hardware.

Particular attention will be paid to models with large-capacity batteries (5000-6000 mAh), as they are more likely to suffer from heat during charging, and smartphones on MediaTek chips (for example, Redmi Note 11 Pro).+ 5G), where overheating may be associated with unoptimized control of processor cores.

1. Check the temperature: when warms is the norm, and when not

The first thing you need to do is measure the actual temperature of the components of the phone. CPU Monitor, AIDA64 tool-in MIUI — Settings → The phone. → All characteristics → Battery status. Focus on the following indicators:

• 🌡️ Up to 35.°C - normal operating temperature in standby mode or under light load (social networks, instant messengers).
• 🔥 35–45°C is acceptable for gaming, video, charging or updating the system, but if the temperature is kept at the upper limit for more than 20 to 30 minutes, this is cause for concern.
• ⚠️ 45°C and above, critical overheating. 50.°C+ Trottling (forced productivity decrease) is triggered, and at 55°The C phone can be turned off to avoid damage.

Pay attention to the localization of heating:

• 📱 Upper body (near the camera) – heats the processor or module 5G.
• 🔋 The bottom part is a problem with the battery or charging controller.
• 📶 Side faces – overheating of the antenna (especially with a weak network signal).

The critical point: if the phone heats up to 40°C+ Standby (screen is off, applications are closed), this almost always indicates a hardware malfunction – a worn-out battery, a damaged motherboard or a malfunctioning power controller.

Programmatic causes: background processes, viruses and "heavy" applications

In 60% of cases, Xiaomi overheating is associated with unoptimized software. MIUI, Despite regular updates, it is sinning with excessive background processes, especially in versions for the global market (with pre-installed services from Google and Xiaomi:

Background applications and auto-run

MIUI aggressively caches applications, even those you don't use, to check and disable unnecessary processes:

1. Go to Settings → Applications → Application Management.
2. Select the AutoRun tab and turn off autoboot for instant messengers, games, and underutilized programs.
3. In the Battery and Productivity section → Battery management set for background applications Background Restriction mode.

2.2 Viruses and malware

Xiaomi smartphones on MediaTek (e.g. Redmi) 9A or POCO M4 Pros are more likely to be targeted for cryptocurrency mining through hidden scripts. Check your phone with antivirus (Malwarebytes or Dr.Web Light) and remove suspicious apps:

• 🛑 Unknown applications with administrator rights.
• 📊 Dramatic growth of mobile data traffic (checked in Settings) → SIM-maps and mobile networks → Traffic).
• ⚡ Unexplained battery consumption (in Settings) → Battery → Battery utilization).

"Heavy" games and applications

Games like this PUBG Mobile, Call of Duty or Genshin Impact at the maximum graphics settings can warm up even the flagship Snapdragon 8+ Gen 1 to 50°C. To reduce the load:

• 🎮 Reduce. FPS and resolution in game settings (e.g., with 90) FPS 60 FPS).
• ❄️ Enable Balanced or Battery Savings Performance Mode in Settings → Battery → Performance modes.
• 🔄 Use a cooling stand (for long gaming sessions).

⚠️ Warning: If the phone warms up even in simple games (such as Candy Crush), this may indicate a degradation of the thermal paste between the processor and the radiator.

3. Settings MIUI, heat-producing

Firmware MIUI It's known for its hidden features, which can imperceptibly increase the load on the processor:

Optimization of battery and performance

By default. MIUI It's called Adaptive Performance, which dynamically adjusts the frequency of the processor, sometimes overclocking the cores:

1. Go to Settings → Battery and Performance → Performance Modes.
2. Choose Balanced or Battery Savings.
3. Turn off the Adaptive Brightness option (it forces the processor to constantly analyze the lighting).

System updates and background activity

MIUI Often checks for updates in the background that loads the processor:

• 🔄 Turn off automatic update checks in Settings → The phone. → Updating the system → Settings (⚙️) → Automatic booting.
• 📥 Set background traffic restriction for System Update and Google Play Services.

Animations and visual effects

Effects. MIUI (smooth transitions, animation icons) beautiful, but load GPU. To turn them off:

1. Activate Developer Mode (7 times click on the MIUI version in Settings → About Phone).
2. Go to Settings → Additional → For developers.
3. Set the window animation scale, the transition animation scale and the animator duration on No animation.

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If after disabling animations, the phone has become less responsive, return the settings to 0.5x — It is a trade-off between productivity and smoothness.

Hardware causes: from battery to thermal paste

If the software methods didn’t help, the problem lies in the hardware. Consider the typical hardware malfunctions Xiaomi causes to overheat:

Battery: How to check wear

Xiaomi's battery is designed to run 500 to 800 charge cycles, and then its capacity drops and internal resistance rises, which leads to heat, to check the status:

1. Enter the number ##4636##.
2. Select Battery Information and see Health Level.
3. If the battery is below 80%, it is time to change the battery.

⚠️ Warning: Never use your phone while charging if the battery is swelling (the body has deformed) this can cause fire.

Thermopast: When to Change It

The thermo interface between the processor and radiator dries up over time, especially in phones older than 2-3 years.

• 🔥 Heating to 45.°C+ minimally loaded.
• ⚡ Frequent trottling (sharp fall) FPS play).
• 📉 Fast battery discharge due to constant cooling system operation.

Replacement of thermopaste is better to entrust the service center, but if you are confident in your abilities, you can do it yourself (you will need Arctic thermopaste for this). MX-4 Thermal Grizzly Kryonaut, and a plastic transmitter for neat application).

5. Charging: Why Xiaomi is warming up when connecting to the network

One of the most common complaints is that the phone gets hot while charging, especially when using fast standards (Fast Charge, HyperCharge or Turbo Charge).°C, but if the body gets hot and the charging goes jerky, the problem may be in the:

• ⚡ Unoriginal charger (especially dangerous cheap Chinese adapters without certification).
• 🔌 Damaged cable (furnished insulation, oxidized contacts).
• 🔋 Faulty power controller (frequent problem with Redmi Note 10 Pro and POCO X3 Pro).

To reduce the heat during charging:

1. Use the original adapter and cable (it’s common for Xiaomi) USB-C Quick Charge Supported 3.0/4.0).
2. Turn off your phone from charging when you reach 80% (this will also extend battery life).
3. Do not use your phone while charging (especially do not run games or videos).
4. Remove the cover (it can block the heat sink).

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If the phone is warming up even with the original charger, try turning Safe Charging mode on the battery settings. This will limit current but reduce heat.

External factors: covers, sun and operating conditions

Sometimes the cause of overheating is not the phone, but the way you use it. Here are the external factors that are often overlooked:

• ☀️ Direct sunlight: left in the sun Xiaomi can heat up to 60°C in 10-15 minutes. That's dangerous for the battery!
• 🧥 Tight covers: silicone or leather covers block the heat sink. Use thin transparent bumpers for games and charging.
• 🚗 Use in the car: If the phone is lying on a torpedo under the sun or near a heater, it will overheat.
• 📶 Weak network signal: in areas of poor coverage (metro, basement), the phone increases the transmission power, which loads the processor.

To minimize the impact of external factors:

• 🌑 Avoid using your phone in ambient temperatures above 35°C.
• 📵 In places with a bad signal, switch to 2G (In Settings → SIM-maps and mobile networks → Preferred type of network).
• ☁️ To navigate in your car, use offline maps (such as Google Maps with loaded regions) to reduce the load on the modem.

7.Extreme measures: resetting settings and contacting the service

If none of the above methods worked, there are two options:

7.1 Hard Reset (Hard Reset)

Factory reset deletes all data, but often solves overheating problems caused by software failures.

1. Go to Settings → About Phone → Backup and Reset → Reset settings.
2. Select Delete all data.
3. Confirm the action and wait for the reboot.

⚠️ Warning: After a reset, do not restore data from the backup immediately - first check if the phone is warming with a clean system.

7.2. Contact the service centre

If the overheating persists even after the reset, it is almost certainly a hardware malfunction.

• 🔧 Diagnose the motherboard for damage.
• 🔋 Check the battery and power controller.
• 🧪 Replace the heatpaste (if the phone is older than 2 years).
• 📡 Check the operation of the antenna module (if warmed up when calling).

The cost of repair depends on the model and the problem:

• Battery replacement: 1,500–3,000 ₽.
• Thermopaste replacement: 1,000–2,000 ₽.
• Diagnosis of the fee: 500-1 500 ₽.

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If your Xiaomi is guaranteed, don’t disassemble it yourself – this will void warranty obligations.

FAQ: Frequent questions about Xiaomi overheating