Why Xiaomi Phone Is Heated: Technical Causes and Methods of Elimination

Have you noticed that your Xiaomi is getting hotter than usual? Maybe the case of the smartphone is hot even at minimal load, and the battery is going down faster than before, POCO It's also Mi, but it's not always a breakdown, and 80 percent of the time, you can fix it yourself without going to a service center.

In this article, we will look at all possible causes of overheating, from software failures to hardware malfunctions, and give step-by-step instructions on how to diagnose the problem and return the phone to normal temperature. 12/13/14, Redmi Note 11/12 and POCO F4/F5, where overheating is often associated with the features of the Snapdragon and MediaTek processors.

If your phone is not just warm, but hots up to 50-60°When charging or playing, this is an excuse to act immediately: prolonged overheating reduces the battery life by 2-3 times and can lead to a sudden shutdown of the device.

1. Is the temperature of your Xiaomi normal?

Before sounding the alarm, it's important to understand what counts as normal heat for Xiaomi smartphones, with the manufacturer claiming the following ranges:

• 📱 30–37°C - optimal temperature for normal use (social networks, instant messengers, video viewing).
• 🔥 38–45°C - allowable heating under intense loads (games, shooting) 4K-video, charging).
• ⚠️ 46°C and above is the critical temperature that requires intervention.°C is triggered by thermal throttling (performance restriction), and at 60°C phone can turn off.

To accurately measure the temperature, use:

1. Built-in sensor: go to Settings → The phone. → Battery status (some models display battery temperature).
2. Third-party annexes: AIDA64 or CPU Monitor will show the temperature of the processor, battery and other components.

Note: Models with Snapdragon processors 8 Gen 1/2 (for example, Xiaomi 12 pro POCO F4 GT) They're more likely to heat up because of the chip architecture, and it's not a defect, it's a design feature, but it can be smoothed out with the right settings.

2. Programmatic causes of overheating (and how to eliminate them)

In 60% of cases, Xiaomi overheating is not caused by hardware problems, but by software failures, background activity or improper settings.

2.1 Background processes and malware

Many apps continue to work in the background even when you're not using them, especially when you're not using them.

• 📲 Social networks (Facebook, TikTok, Instagram) – constantly synchronize data.
• 🎮 Game launchers (Xiaomi Game Turbo, Google Play Games) – optimize performance, but load the processor.
• 🔍 Viruses and miners – some applications from third-party sources secretly use the resources of the phone.

How to clean the background processes:

1. Open Settings → Applications → Application Management.
2. Click on the three dots in the top right corner and select Sort by Battery Use.
3. Close the applications that consume >5% charge in the background (except system charges).
4. For complete cleaning, use the settings → Memory. → Cleaning (Deep Clean function in the MIUI).

Failures in MIUI firmware

Updates MIUI Sometimes they bring not only new features, but also bugs that lead to overheating. MIUI 14 Many Redmi Note 11 users complained about increased heat due to a bug in the control of the processor.

How to check and correct:

• 🔄 Update the firmware: Settings → The phone. → Updating the system.
• 📉 Reverse to the stable version if the problem occurs after the update (instruction below).
• 🛠️ Reset the settings to factory: Settings → Additionally. → Recovery and reset (pre-recover backup!).

Incorrect performance settings

Xiaomi offers several modes of operation of the processor, which affect the heating:

• 🚀 Performance – maximum frequency of cores, strong heating.
• ⚖️ Balanced – the best option for most tasks.
• 🐢 Charge savings – limits performance but lowers temperature.

How to change the regime:

1. Go to Settings → Battery and Performance → Performance Mode.
2. Choose Balanced or Charge Saving (if the phone is warming without load).
3. For gaming smartphones (POCO F3 GT, Black Shark: Turn off Game Turbo in game settings.

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If your Xiaomi is warming up while charging, try turning off Fast Charging in the battery settings.°C, but will increase charging time by 30-40%.

3. Hardware causes: when the "iron" is to blame

If software methods didn’t work, the problem lies in the physical components of the phone, and consider the most common hardware causes of overheating and their signs:

The average battery life is 2-3 years (or 500 charge cycles) and if your Xiaomi is older, it probably lost capacity and started to overheat.

1. Enter the phone code in the app: ##4636##.
2. Select Battery Information.
3. Compare the charge level (should match the percentage displayed) and the state (should be good).

⚠️ Warning: If the battery temperature exceeds 45°C when charging, immediately disconnect the phone from the network!Continued use may cause the battery to bloat.

Problems with charger

Non-original charging or cables often cause overheating. Xiaomi uses Quick Charge technology, which requires precise voltage matching. If the power supply produces more volts than it needs, the phone starts to warm up.

How to check the charger:

• 🔌 Use only original accessories or certified analogues (e.g. Anker, Baseus).
• 📊 Check the output voltage: for Quick Charge 3.0/4.0 it should be 5V/9V/12V (indicated on the block).
• 🔥 If your phone is only warmed with a specific charge, replace it.

Overheating due to the chamber or module 5G

Modules. 5G and high resolution cameras (e.g, 200 MP in Xiaomi 13 Ultras use a lot of energy. They take long periods of video. 4K@60fps or using the mobile Internet 5G temperature may rise 50°C.

Decisions:

• 📶 Turn it off. 5G, If not needed: Settings → SIM-maps and mobile networks → Type of network → 4G.
• 🎥 Reduce video resolution to 1080p@30fps camera-setting.
• ☁️ Use Wi-Fi instead of mobile internet to download large files.

4.Overheating during games: how to reduce the temperature

Games like Genshin Impact, Call of Duty Mobile or PUBG They load the processor and video accelerator 90 to 100 percent, which inevitably leads to heat, but there are ways to reduce heat generation without a lot of loss of energy. FPS.

Optimization of graphic settings

In most games, you can manually reduce the load:

• 🎮 Set Medium or Low Graphic Settings.
• 🔄 Turn off anti-aliasing and shadows.
• 🖥️ Reduce the render resolution to 720p (play-time).

For phones. POCO and Black Shark is available in Game Turbo mode, but it often only makes heating worse:

1. Start the game.
2. Swipe down to open the Game Turbo panel.
3. Push the gear. → Turn off Game Turbo.

Use of a cooler or cooling cover

For gaming smartphones (POCO F4 GT, Black Shark 5 Pro has special accessories:

• 💨 Cooler with fan - attached to the rear panel and blows the body (reduces the temperature by 5-10)°C).
• ❄️ Cooling case - contains gel inserts that absorb heat.
• 🧊 Thermopaste – replacement of factory paste (requires disassembly of the phone).

If you do not want to spend money on accessories, you can use improvised means:

1. Remove the case during the game (it retains heat).
2. Play in a ventilated room (not in direct sunlight).
3. Take a break every 30 to 40 minutes to keep your phone cool.

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Games at maximum settings can reduce battery life by 20-30%. Optimal balance is average graphics at 60 FPS.

5. Overheating when charging: what to do

If Xiaomi only heats up while charging, the problem lies in one of three components: the power supply, the cable, or the phone's power controller.

Fast charging vs heating

Quick Charge, Turbo Charge and HyperCharge (in Xiaomi) 12S Ultra) reduces charging time, but increases heat output. 120W HyperCharge battery temperature can reach 45-50°C.

How to reduce heat:

• ⚡ Turn off fast charging: Settings → Battery → Fast charging.
• 🔋 Charge your phone when the screen is off (or in airplane mode).
• 🌡️ Use wireless charging – it’s slower but heats less.

Diagnostics of a faulty charger

Check the power supply and cable for damage:

1. Check the cable on the curves (often rubbed at the base of the connector).
2. Try charging your phone with another charger.
3. If the phone is warming with the original RAM, check the connector USB-C oxidation.

⚠️ Warning: If the phone is heated to 50°C and above, and the battery is swelling (see above the raised screen), stop using immediately.

6. When to contact the service center

If you’ve tried all the ways, but Xiaomi is still warming up, it may be that the problem requires professional intervention.

• 🔥 Phone heats up to 60°C and higher for no apparent reason.
• 🔄 There are spontaneous reboots or shutdowns.
• 📉 The battery swelled or its capacity fell below 70%.
• 💧 On the motherboard, traces of oxidation or dwindles are visible.
• 🛠️ Overheating appeared after falling or getting moisture.

The cost of repairs in official Xiaomi services (for 2026):

Before the service visit:

1. Make a backup of the data (Settings → Additional → Backup).
2. Write down the phone's IMEI (type *#06#).
3. Check whether the warranty is maintained (on most models it is valid for 12 months).

7.Overheating Prevention: 5 Rules for Xiaomi Owners

To avoid future heat problems, follow these guidelines:

1. 🔄 Regularly update the software in new versions MIUI Frequently correct errors that lead to overheating.
2. 🧹 Clean the cache once a month: Settings → Memory. → Cleanup.
3. ☀️ Avoid direct sunlight – do not leave your phone on the dashboard of the car or windowsill.
4. 🔋 Do not drain the battery to 0% – optimal charge range of 20–80%.
5. 🛡️ Use ventilation covers or remove them when under heavy load.

For models with Snapdragon 8 Gen 1/2 (for example, Xiaomi 12 Pro, POCO F4 GT) recommended:

• 🎮 Set a limit FPS in games (for example, 60 instead of 90 or 120).
• ❄️ Use a cooling stand for long sessions.
• 🔧 Disable unnecessary background processes through Developer Settings (Limit background processes).

FAQ: Frequent questions about Xiaomi overheating