Why Xiaomi Smartphone Is Heated: 12 Reasons and 7 Ways to Solve It

Your Xiaomi is hot like an iron and your battery goes down in a couple of hours? Overheating is one of the most common problems with smartphones of this brand, but it is not always associated with breakdown. 80% of the time, it is software failures, incorrect settings or external factors that can be fixed on their own. e.g. Redmi Note 12 Pro+ Dimensity 1080 can be heated to 45°C when you play Genshin Impact -- and that's okay if the temperature drops fast. X5 It is hot even in standby mode, it is time to sound the alarm.

In this article, we will analyze all possible causes of overheating - from harmless to critical, which require repair. You will learn how to distinguish normal heating when charging from dangerous battery overheating, which applications “eat” the processor in the background, and why even the new Xiaomi 14 can turn into a “cooker” after an update. MIUI. And at the end - a checklist of 7 steps for emergency cooling of the phone.

1. Normal heating vs dangerous overheating: how to distinguish

Before you panic, it’s important to understand that any smartphone heats up when you work hard.The Qualcomm Snapdragon or MediaTek Dimensity processor in Xiaomi can heat up to 40-50°C:

• 🎮 High graphics games (Call of Duty Mobile, PUBG)
• 📹 Video recordings in 4K or long-term video calls
• 🔋 Fast charging (especially on models with support) 120W HyperCharge)
• 🔄 Update the system or restore from backup

But there are alarming signs that point to the problem:

• 🔥 The phone is heated without load (lies on the table, the screen is off)
• 📉 The battery sits down in 2-3 hours with normal use
• 🚨 Warning: "Temperature is too high" with forced shutdown
• 🔌 Charging stops by 80-85% (protection against overheating of the battery)

If you see at least one of these symptoms, read on – we will discuss the specific causes and ways to eliminate them.

2. Processor under load: games, multitasking, background processes

The most common cause of overheating is overloading the processor. Even the flagship Snapdragon 8 Gen 2 chips (like the Xiaomi 13 Ultra) can heat up to 50-60°C for long loads. And budget models on Helio. G88 (Like Redmi. 12C) They start to “slow down” at 45.°C.

How to check what exactly loads the processor:

1. Open the Settings. → The phone. → Status of the system → Temperature (on some models, the path may be different).
2. Use third-party utilities like this CPU Monitor AIDA64 diagnostically.
3. Check the list of running applications in Settings → Annexes → Launched.

Typical processor eaters:

• 🎮 Games with high graphics settings (especially if 120 is enabled) FPS)
• 📱 Social networks (TikTok, Instagram) in the background
• 🔄 Auto-update applications and backup to the cloud
• 🤖 Viruses and mining bots (if the phone began to warm up after installing an unknown device) APK)

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In games, tie FPS ce 60 staffing 90/120 — This will reduce the processor burden on 20–30% without a noticeable loss in gameplay.

3. Battery problems: wear, defects, improper charging

Battery is the second most common source of overheating. 2 In the past few years, the battery capacity has dropped below 80%, And it starts to warm up even with normal charging, especially with fast-charging models (33W/67W/120W).

Signs of battery problems:

• 🔋 The phone only warms when charging, even if not in use.
• 📉 Charge drops from 100% to 80% in 10-15 minutes
• 🔌 Charging stops by 80-85% (overheating protection is triggered)
• 💥 The phone suddenly turns off at 20-30% charge

How to check the status of the battery:

1. Enter the phone code ##4636 in the app## → Select "Battery Information».
2. Use the AccuBattery app (showing real capacity and wear).
3. See the number of charging cycles in Settings → Battery. → Battery status (if available).

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If the battery is swelling (the phone body is deformed), DO NOT use the device - it is dangerous! Take to the service center Xiaomi.

4. Viruses, Mining and Malware

One of the most insidious causes of overheating is hidden viruses or mining bots that use your phone’s resources to mine cryptocurrency, especially after installing pirated apps or mining. APK source.

How to Detect Malware:

• 📊 Check the Settings. → Battery. → Battery use: unknown processes with high consumption?
• 🔍 Install antivirus (Malwarebytes, Dr.Web Light) and scan the system.
• 📱 Check out the list of installed apps – there are suspicious ones?

Typical symptoms of infection:

• 🔥 The phone is warming up even in standby mode.
• 📉 Battery goes down in 3-4 hours without active use
• 📶 Mobile traffic consumption increased (mining bots send data)
• 📲 Advertising appears in unexpected places (in settings, screen locking)

5. Iron malfunctions: thermal paste, plumes, sensors

If the phone is warming up all the time, even after resetting and replacing the battery, the problem may be in the hardware:

• 🔧 Thermopaste between the processor and radiator has dried (relevant for phones over 3 years old)
• 📶 The antenna plume is damaged (the phone warms up when calling or using the mobile Internet)
• 🔌 Power controller is faulty (heats even when the phone is turned off)
• 🌡️ Broken temperature sensor (phone shuts down for no reason)

How to diagnose hardware problems:

• 🔍 See if the battery is swelling (if so, immediately to the service!).
• 🔧 Check if the back cover is moving away (there may be a defect in the body).
• 📱 Run an iron test through AIDA64 or CPU-Z.

Updates MIUI and software bugs

Sometimes overheating begins after the update. MIUI. For example, after leaving MIUI 14 Many Xiaomi users 12T They complained about the heat from the optimization of the new processors. MIUI 13 was a bug with background activity of Google Play Services that drained the battery in a few hours.

How to check if the update is to blame:

• 📅 See when the phone started warming up - does it match the update date?
• 🔍 Go to Settings. → The phone. → Version. MIUI Check out the latest updates.
• 📱 Read the reviews on the forums (4PDA, Mi Community – Are other users complaining?

What to do if the problem is in the firmware:

• 🔄 Reverse to the previous version MIUI (if there is a backup).
• 📲 Clear the system cache (Settings) → Memory. → Clear the cache).
• 🔧 Reset the settings to factory (pre-save data!).

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If the overheating started after the update, wait for the next patch – Xiaomi usually fixes critical bugs within 1-2 weeks.

7.External factors: covers, sun, humidity

Sometimes the cause of overheating lies not in the phone, but in its operating conditions:

• ☀️ Direct sunlight – even 10 minutes in the sun can heat up the body to 50°C.
• 🧥 Dense covers (especially silicone or with metal inserts) block the heat sink.
• 🚗 Use in the car (on a torpedo in summer the temperature can reach 70)°C!).
• 💦 Humidity or condensation (if the phone overheats after a bath or rain).

How to protect your phone from external heat:

• 🌂️ Do not leave Xiaomi in direct sunlight (even when it is off!).
• 🧤 Remove the case if the phone starts to warm up while charging or playing.
• 🚗 In the car, use a holder with ventilation or put the phone in the shade.
• 💧 If your phone is wet, don’t turn it on – let it dry for 24 hours in rice or silica gel.

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If the phone overheats in the sun, DO NOT put it in the fridge! A sharp temperature drop can damage the screen. Better put it in the shade and let it cool naturally.

Checklist: 7 Steps to Extraordinary Cooling for Xiaomi

If your Xiaomi is already hot and needs to be cooled down, follow this algorithm.

If after these actions the phone continues to warm, most likely, the problem is in the hardware (battery, processor, thermal paste).

FAQ: Frequent questions about Xiaomi overheating