Why Xiaomi Redmi 8 Pro is hot: analysis of the causes and working solutions

Xiaomi Redmi 8 Pro is a popular mid-range smartphone with powerful hardware for its time: Snapdragon 665 processor and 4500 mAh battery. However, many users face the problem of overheating the device, especially during heavy use or even in standby mode. In this article, we will discuss 7 key reasons why your Redmi 8 Pro may heat up, how to diagnose the problem and what to do to fix it – from software settings to hardware checks.

It’s important to understand that moderate heating (up to 40-45°C) when charging, playing or shooting video is the norm for most smartphones. But if the case gets hot to the touch (above 50°C), the device brakes, quickly discharges or turns off – this is a malfunction signal. Next, we will consider both “mild” causes (background processes, updates) and “hard” (battery wear, damage to the board).

1. Intense workload: games, video and multitasking

Snapdragon processor 665 redmi 8 Pro, although energy efficient, but not designed for modern AAA-Genshin Impact or Call of Duty Mobile toys at maximum settings. 30-40 minutes) the chip is heated to 60-70°C, which leads to:

• 🔥 Trottling - forced performance reduction for cooling.
• 📉 A sharp fall FPS and hanging.
• 🔋 Accelerated battery discharge (up to 1% per minute).

In addition to games, heating is provoked by:

• 🎥 Videotaping in the video 4K or 1080p@60fps.
• 📱 Simultaneous operation of the navigator (Google Maps), music (Spotify) and instant messengers.
• 🔄 Background synchronization of cloud services (Google Drive, Mi Cloud).

How to reduce heat during loading:

1. Reduce the graphics in games to Medium settings and limit FPS to 30-40 fps (in the game settings).
2. Close the background applications through Settings → Applications → Launched.
3. Use Performance Mode (Settings → Battery → Performance Mode → Balanced).

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If the game heats the phone a lot, try to turn on the game mode in the notification curtain – it optimizes resource allocation and reduces heat.

2. Battery problems: wear and malfunction

Redmi 8 Pro is equipped with a lithium-polymer battery capacity 4500 mAh, which degrades over time. 300-500 charge-cycle (≈1.5-2 year of use) the capacity falls on 20-30%, And the internal resistance increases:

• ⚡ Fast heating when charging (especially on fast charging) 18W).
• 🔥 Spontaneous discharge and heating in standby mode.
• 💥 Battery bloating (critical malfunction!).

How to check the status of the battery:

1. Enter the code ##4636## → select Battery Information.
2. Look at Health Level, if it's below 80%, the battery is worn out.
3. Use apps like AccuBattery (shows real capacity and temperature).

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If the battery is swelling (the phone body is deformed), stop using the device immediately!

3. Background processes and malware

One of the most common causes of overheating is hidden processes that load the processor and battery. In the Redmi 8 Pro, this is often due to:

• 🤖 Viruses and miners (hiddenly mining cryptocurrency).
• 📱 System updates (background loading of firmware).
• 🔄 Autosynchronization (mail, cloud, social networks).

How to detect and eliminate:

1. Check CPU usage: Settings → About Phone → MIUI Version (tap 7 times) → Additional → CPU Monitor If some application is constantly loading the processor by 30%+ – delete it.
2. Scan your phone for viruses (Malwarebytes, Dr.Web Light).
3. Turn off auto-update apps: Google Play → Settings → Auto-update apps → Never

4. Failure of the charger or cable

Cheap or damaged chargers are a common cause of overheating. Redmi 8 Pro supports fast 18W charging, but if you use non-original accessories, you can experience:

• ⚡ Voltage surges (heating the battery and the power controller).
• 🔌 Bad contact (phone is charged, then no, warms connector).
• 💥 Short circuit (risk of damage to the board).

How to check the charger:

• Use the original cable and power supply (it should read Output: 5V/3A or 9V/2A).
• Try charging your phone from another device (power bank, laptop) and if the heat goes away, it's a problem to charge.
• Check the USB-C connector for dirt or damage (clean carefully with a toothpick).

5.Overheating due to MIUI updates and firmware

After major MIUI updates (e.g., MIUI 12 to MIUI 13), many users complain of increased heat.

• 🔄 System optimization (background indexing of files).
• 🐞 Firmware bugami (incorrect operation of processor cores).
• 📱 New features (such as Game Turbo or Second Space).

What to do:

1. Wait 1-2 days – the system is optimized.
2. Reset the cache: Settings → About the phone → Memory → Clear the cache
3. If the heating does not pass, roll back to the previous version of MIUI via Fastboot (instruction below).

Hardware malfunctions: board, thermal paste, sensors

If all the software methods did not help, the problem may be in the hardware:

• 🔧 Dried thermopaste between the processor and the radiator.
• 📱 Damaged motherboard (especially after falls or moisture).
• 🌡️ Faulty temperature sensor (phone “thinks” it’s cold and doesn’t limit heating).

Signs of hardware malfunction:

• The phone is warmed even when it is turned off.
• One particular area is heated (e.g., the upper part of the housing).
• Artifacts appear on the screen or the phone spontaneously reboots.

⚠️ Warning: If you suspect a hardware breakdown, don't try to disassemble the phone yourself! Redmi 8 Pro uses adhesive to lock the battery and improper dismantling can short-circuit or damage the plumes.

External factors: ambient temperature

Lithium polymer batteries are temperature sensitive. If you're using the Redmi 8 Pro under conditions like:

• 🌞 Heat (above 35)°C), for example, on the beach or in the car.
• ❄️ Cold (below 0)°C), the battery discharges quickly and warms up when charging.
• 💦 High humidity (can cause corrosion of contacts).

Recommendations:

• Do not leave your phone in direct sunlight (for example, on a car torpedo).
• Avoid using your phone while charging in a hot room.
• If your phone overheats outside, don't put it in the refrigerator -- a sudden temperature drop is bad for the battery. 10-15 minute.

FAQ: Frequent questions about overheating Redmi 8 Pro