Xiaomi phone is very warm: all the reasons and ways to eliminate

Your Xiaomi is getting hot like an iron even with minimal load? Battery goes down in an hour and the body burns your hands? Overheating is one of the most common problems of the brand’s smartphones, but in 90% of cases it can be solved without going to the service. In this article, we will analyze all possible causes, from the banal background of applications to critical firmware failures, and also give step-by-step instructions for each model – from the budget Redmi Note to the flagship Mi 13 Ultra.

It's important to understand that light heating when charging or playing is normal for any smartphone, but if the temperature is above 45.°C in standby mode or the phone turns off with a warning "Temperature too high", this is already a malfunction signal. We collected data from official Xiaomi manuals, user reviews from forums. 4PDA Mi Community and the recommendations of service center engineers so that you can diagnose the problem as accurately as possible.

1. Normal temperature vs. overheating: how to distinguish

Before you panic, check if your Xiaomi is overheating.The manufacturer states the following valid values:

How to measure the temperature yourself?

• 📱 Using the hidden menu: enter the code ##4636## in the phone application, select Battery Information. Temperature is the current battery temperature.
• 🔥 Thermometer applications: AIDA64, CPU Monitor or Cool Tool will show the temperature of the processor, battery and other components.
• 👆 Tactile: If the body burns the hands (especially in the area of the camera or the bottom), this is a clear sign of overheating.

⚠️ Warning: If the temperature is above 50°C in standby mode, immediately turn off the phone and do not turn it on until cooling.Risk of battery bloating or damage to the motherboard!

2. Program causes of overheating: what we remove first

In 60 percent of cases, overheating is caused by software problems that can be fixed without disassembling the phone.

Background applications and battery-eating services

Many users are unaware that even closed applications continue to work in the background, especially in the following cases:

• 📸 Social networks: TikTok, Instagram, Facebook – they constantly update the feed and send analytics.
• 🎮 Even after the release of Genshin Impact or PUBG Mobile processes can be stored in memory.
• 📍 Maps and navigators: Google Maps or Yandex.Navigator include GPS They eat up to 30 percent of the charge.
• 🔄 Auto Updates: Play Market, Mi App Store and even WhatsApp can download updates in the background.

How to clean the background:

For radical cleaning, use the command (developer rights are required):

adb shell am kill-all

2.2 Viruses and Mining Bots

Xiaomi based on Android is vulnerable to mining viruses that use the processor to mine cryptocurrency.

• 📈 A sharp increase in temperature even when the screen is turned off.
• 🔋 Battery goes down in 2-3 hours without active use.
• 📊 Task Manager has unknown processes with names like com.android.system.update or service.host.

How to check and delete:

1. Install Malwarebytes or Dr.Web Light and scan the system.
2. Check the list of installed applications in Settings → Apps – Remove suspicious ones (especially with Chinese names).
3. If the virus is embedded in system files, reset to factory settings (Settings) → The phone. → Resetting settings).

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Pre-reset, save it. IMEI Enter the phone app *#06# and take a picture of the screen, which will help restore the network after resetting if there are problems.

2.3. Outdated firmware or beta MIUI

Xiaomi regularly releases updates that optimize power consumption.If you haven’t upgraded in a long time or are in beta. MIUI, it can cause overheating.

How to update correctly:

1. Go to Settings → About the phone → System update.
2. If you have an update, download it over Wi-Fi (not mobile!).
3. After installation, reboot – many errors are fixed only after the reboot.

⚠️ Warning: If your phone gets warmer after the upgrade, roll back to the stable version via the Mi Flash Tool. Beta firmware often contains power management bugs.

Hardware causes: when the "iron" is to blame

If the software methods didn't work, the problem lies in the physical components of the phone.

Wear or bloating of the battery

Xiaomi batteries (especially in Redmi Note models) 8/9 POCO X3) prone to swelling after 2–3 years of use, signs of use:

• 🔋 The phone is discharged quickly (less than 4 hours of operation).
• 📏 The case became "convex" - check whether the phone is flat on the table.
• 🔥 Heating even at 10-20% charge.

How to check:

1. Remove the back cover (if possible) and inspect the battery. The bloated battery will be convex and may have a white coating.
2. Use the AccuBattery app – it will show the real capacity and degree of wear.

Decision:

• 🔧 Replace the battery at the service center (cost for Redmi – from 1500) ₽, for flagships - from 3000 ₽).
• 🚫 Do not use a bloated battery - the risk of fire!

Contamination of connectors and cooling systems

Dust and dirt block the heat sink, causing the processor and memory chip to overheat, especially for active-cooled phones (Black Shark, Poco). F4 GT).

How to clean:

1. Turn off the phone and remove the tray for SIM-map.
2. Clean the air with a soft brush (or compressed air) with: USB-C (Dust interferes with charging and causes heating; speakers and microphones (accumulate fibers and debris); vents (if any, like the Black Shark 5 Pro's).

For deep cleaning, disassemble the phone (only if you have experience!) and remove the thermopaste from the processor - it needs to be replaced.

Faulty of the processor or module 5G

If the phone is only warming when using mobile internet, the problem may be in the module. 5G It's typical of an antenna:

• 📶 Xiaomi Mi 11 Ultra (Problems with Qualcomm) X60).
• 📶 Redmi K50 Pro (overheating with prolonged use) 5G).
• 📶 Poco F4 (modem failure).

Decisions:

• 📵 Turn it off. 5G In Settings → SIM-maps and mobile networks → Network type (select the network type) 4G/3G/2G).
• 🔄 Reset network settings: Settings → Data transfer and SIM-map → Resetting network settings.
• 🔧 If the problem persists, the modem chip malfunctions. Service replacement is required.

4. Overheating during charging: why this happens

Charging is the hottest process for a smartphone.If your Xiaomi heats up to 50°C and higher when connecting to the network, check:

Non-original cable or adapter

Xiaomi is sensitive to the quality of chargers, and cheap cables or power supplies can:

• 🔌 Give unstable voltage, which causes the charging controller to overheat.
• 📉 Reduce charging speeds by making the phone run at its limit.
• ⚡ Provoking short circuits (risk of battery damage!).

How to choose a charger:

If you don’t have an original adapter, choose certified Quick Charge-enabled analogues. 3.0/4.0.

Fast charging and wireless charging

Fast Charging and Wireless Charging technology speed up charging but increase heating.

• 🔥 Redmi Note 12 Pro+ s 120W charging heated to 45-50°C in the first 20 minutes.
• 📱 Wireless charging on Mi 11 can raise temperature by 10-15°C compared to wired.

How to reduce heat:

• 🔌 Turn off fast charging in Settings → Battery → Quick charging (if option is available).
• 📵 Charge your phone in airplane mode – this will reduce the load on the processor.
• ☀️ Do not charge your phone in the sun or in a hot room (optimum temperature is 10-35).°C).

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If the phone only heats up when charging, but cools down quickly after it's turned off, the problem is the adapter or the cable, and if it stays hot, it's the battery or the processor.

5.Overheating in Games: How to Play Without Risk

Mobile games like Genshin Impact, Call of Duty Mobile or Honor of Kings load the CPU and GPU by 80-100%, which inevitably leads to heat. FPS:

5.1 Optimization of graphics in games

Set up the graphics manually:

• 🎮 V PUBG Mobile: Choose Smooth + Medium instead of Medium HDR + Ultra.
• 🏹 In Genshin Impact: Downsize FPS before 30 and turn off Shadows.
• 🚗 In Asphalt 9: Set the Graphics Quality → Low.

Also activate the performance mode in Settings → Special facilities → Game mode (available on MIUI 12+).

5.2. Cooling the phone during play

Physical cooling methods:

• 🧊 Use a cooling case (e.g. Black Shark Cooling Backclip).
• 💨 Point a fan or air conditioner at your phone (but not ice air!).
• 🛌 Take breaks every 30-40 minutes of play.

Policy solutions:

• 📉 Install Game Booster from the Mi App Store – it optimizes CPU usage.
• ❄️ Enable CPU Cooling in the Engineering Menu (code ##36446337##, then Hardware Testing) → CPU Cooling).

Processor overclocking and undervoltage

For advanced users: You can manually limit the processor frequency to reduce heat.

Instructions (root required):

1. Install Kernel Auditor or FrancoKernel Manager.
2. In the section CPU reduce the maximum frequency by 10-15% (for example, from 2.84 GHz to 2.4 GHz).
3. Activate Undervolting (reducing the voltage at the cores) for additional temperature reduction.

⚠️ Warning: Incorrect settings can lead to unstable operation or turn off the phone!

6. Overheating due to the camera: shooting video and photos

Xiaomi camera modules (especially in Mi type flagships) 11 Ultra or 12S Ultras use a lot of energy. They take a lot of video. 4K/60FPS or using night mode, the temperature may rise to 50°C.

Optimization of camera settings

To reduce the heat:

• 🎥 Take a video in 1080p/30FPS instead 4K/60FPS.
• 📸 Turn off AI processing and Night mode in manual settings.
• 🔋 Close all background applications before shooting.

Problems with the camera module

If the camera is warm even in viewing mode (without shooting), it is possible:

• 🔧 Problems with plume (often after falls).
• 📱 Camera firmware failure (helps reset the camera app settings).
• 🔥 Overheating of the sensor (requires a replacement module).

For diagnosis:

1. Run the camera test through the engineering menu: ##0*## (on some models).
2. If the image is blurry or with artifacts, the problem is in the iron.

7.When to contact the service: critical cases

Not all problems can be solved by yourself. Contact Xiaomi Service Center if:

• 🔥 The phone shuts down with a Temperature too high message even after cooling down.
• 💥 The battery swelled or cracks appeared on the body.
• 📵 The phone does not turn on after overheating (possibly the power controller burned down).
• 🔌 Charging does not go or goes only in the off state.
• 📡 Antenna does not catch the network after heating (modem problem).

Cost of repair in official Xiaomi services (2026):

Before the service visit:

1. Make a backup of the data (overheating could damage the memory).
2. Write it down. IMEI Serial number (on the box or under the battery).
3. Check if the warranty is maintained after repair.

8.Overheating prevention: how to avoid problems in the future

To prevent your Xiaomi from becoming a “stove”, follow the simple rules:

• 🔋 Charge correctly: Don't leave your phone on charge all night. Use only original or certified adapters. Remove the case when charging (it degrades heat sink).
• 📱 Update: Install the latest version MIUI. Update apps, especially games and social media.
• ☀️ Avoid extreme temperatures: Don't leave your phone in the sun (like in a car in the summer) -10°C.
• 🧹 Clean the system regularly: Remove the cache in Settings → Warehouse → Check your phone for viruses 1 time a month.

For models with active cooling (Black Shark, Poco) F4 GT):

• 💨 Clean the ventilation holes every 3 months.
• 🔧 Change the heat paste once every 1-2 years (in the service).

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Prevention of overheating prolongs the life of the battery by 30-40%, the average life of the battery when properly operated is 3-4 years.

FAQ: Frequent questions about Xiaomi overheating