Xiaomi Redmi Note 8 Pro is very warm: the reasons and what to do

Your Xiaomi Redmi Note 8 Pro is getting hot like an iron even with minimal load? Don't panic - 80 percent of the time, it can be solved without going to the service center. This model, launched in 2019 with a MediaTek Helio G90T processor and a 4,500 mAh battery, is prone to overheating due to the chipset architecture and software bugs. But it's important to distinguish normal heating (up to 40°C in games) from critical heating (over 50°C in idle) that already requires intervention.

We analyzed feedback from owners on the 4PDA and Mi Community forums, data from Xiaomi service centers, and test results using AIDA64 and CPU Throttling Test applications. It turned out that the main causes of overheating fall into three categories: hardware (35% of cases), software (50%) and external factors (15%). In this article, you will find not only diagnostics, but also specific solutions - from battery calibration to thermal paste replacement, indicating the cost and complexity of each method.

1. Normal temperature vs. overheating: how to distinguish

Before you sound the alarm, check if your Redmi Note 8 Pro is overheating.The manufacturer states the following operating temperatures:

• 📱 In simple (screens off, background processes): 25–35°C
• 🎮 In games (PUBG, Genshin Impact on Medium Settings: 40–48°C
• 📸 When filming video 4K: 45°C
• 🔋 During charging (fast charging) 18W): 38–42°C

Heating above 50°C in standby mode or 60°C under load is critical, in which case thermal throttling is triggered, and at 65°C the device is forced to shut down.

• 📊 Built-in menu: Settings → The phone. → Battery status → Temperature.
• 🔧 Annexes: AIDA64 (Sensors" section or AccuBattery

⚠️ Warning: If the temperature is above 55°C when watching YouTube or surfing on social networks is a clear sign of malfunction.°C.

2. Top.-5 hardware-causes

Hardware problems require physical intervention, from cleaning connectors to replacing components, and the most common hardware-related causes are:

Thermopaste wear is especially common, with drying and losing thermal conductivity after 2-3 years of use, which causes the Helio G90T (known for its hot temper) to overheat even at minimal tasks. Check: if the case heats up unevenly (hot at the top of the chipset), the thermal interface is most likely the problem.

⚠️ Note: If after replacing the thermopaste the temperature has not decreased, the cause may be a defect in the processor crystal - in this case, only the replacement of the motherboard (cost from 4000) will help. ₽).

3. Program causes: viruses, firmware, background processes

In 50 percent of cases, the Redmi Note 8 Pro overheats due to software failures.

• 🦠 Malware: Mining bots, spyware, ad viruses load the processor 100% even in the background.
• 🔄 Outdated firmware: in MIUI 11-12 were power management bugs that were fixed only in the MIUI 13+.
• 📱 Background apps: Facebook, Instagram, TikTok continue to work after closing, consuming up to 30% CPU.
• 🎮 Unoptimized games: Genshin Impact, Call of Duty Mobile overload the graphics accelerator Mali-G76.

The first thing you need to do is check the processor boot.

1. Install CPU Monitor from Google Play.
2. Launch the application and see the kernel load schedule.
3. If the download exceeds 50% in simple – look for the culprit in Settings → Applications → Launched.

Updating the firmware often solves the problem: in MIUI 13.0.4+ Xiaomi has added improved heat management for the Helio G90T.

Settings → About phone → System update → Check for updates

Open Task Manager (long-term press on the Home button)

Check the CPU boot in AIDA64

Remove unused applications

Clear the cache in Settings → Storage

Disable auto-start for social networks

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4. External factors: covers, charges, environment

Sometimes the cause of overheating is not the phone itself, but the operating environment.

• 🔥 Using unoriginal charging: Cheap cables and adapters can deliver unstable voltage, causing the power controller to heat up.
• ☀️ Direct sunlight: even 10 minutes in the sun raise the temperature of the body to 50°C.
• 📦 Tight covers: silicone and armored cases worsen heat sink by 20-30%.
• 🚗 Charging in the car: The lighter often gives power surges, especially in older cars.

A simple test: remove the case and put the phone on the table in the shade. If after 15 minutes the temperature dropped by 5-10 ° C, the problem is in the external conditions. To charge, use only the original Xiaomi 18W adapter (MDY-10-EP) or certified counterparts (for example, Baseus 20W).

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If the phone warms up when charging, try to turn on the aircraft mode for the time of recharging - this will reduce the load on the processor and reduce heat generation by 15-20%.

5. How to reduce the temperature without repair: 7 working methods

Before you bring your phone to the service, try these methods. They help in 70% of cases:

1. Disable unnecessary functions: 📶 Settings → SIM-maps and mobile networks → Turn on 4G/5G → switch over 3G, If you don’t need high-speed internet. 📍 Settings → Confidentiality → Location → Turn off geolocation for unnecessary applications.
2. Limit background activity: 🔄 Settings → Battery. → Choice of regime → set "charge savings". 🚫 Settings → Annexes → Permits → Auto-start → Turn off auto-start for all social networks.

Lower your schedule in games

• 🎮 In the graphic settings PUBG or COD Select "Low" Quality and 30 FPS.

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Calibration of the battery only helps with software failures of the power controller. If the battery is physically worn out (blown, capacity <70%), replacement is required.

6.When to contact the service: signs of critical malfunctions

There are symptoms in which self-repair is impossible or dangerous:

• 🔥 Local heating at one point (for example, only in the upper left corner) is a sign of chip detachment or short circuit on the board.
• 💥 Spontaneous reboots when heated above 50°C – triggers emergency shutdown due to damage BGA-processor contacts.
• 🔋 Battery discharges in 1-2 hours with minimal use – possible failure of the power controller.
• 📵 No communication or Wi-Fi after overheating – the communication module could fail MT6785.

The average cost of repairs in Xiaomi service centers (in Moscow for 2026):

• 🔧 Diagnosis: 500–1000 ₽
• 🔋 Battery replacement: 1200–2000 ₽ (original / 800-1200 ₽ (analogue)
• 🖥️ Thermopaste replacement: 800–1500 ₽
• 📱 Screen replacement: 3000–6000 ₽ (depending on the display model)

⚠️ Warning: If after a fall or impact the phone began to warm up and artifacts appeared on the screen (strips, flicker), in any case do not turn it on again - it may be a short circuit on the board!

7.Prevention: How to prevent overheating in the future

To prevent the Redmi Note 8 Pro from becoming a pocket stove, follow these guidelines:

• 🔄 Update the firmware every 1-2 months (in) MIUI 14 improved thermal management for older models).
• 🧹 Clean the cache once a week through Settings → Warehouse → Clear the cache.
• 🔋 Don’t charge your phone overnight – it’s best to keep a charge between 20% and 80%.
• ☀️ Avoid direct sunlight – even in a car on the dashboard, the temperature can rise to 70.°C.
• 🎮 Use a smartphone cooler for long gaming sessions (costs from 300) ₽).

For advanced users, you can install a custom core with improved thermal management, such as the Perseus Kernel (requires an unlocked bootloader), which reduces the temperature by 5-10 ° C by optimizing the frequency of the processor.

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If you play on your phone often, buy a cooling stand with a fan (such as the Black Shark Cooler), which reduces the temperature by 15-20 ° C due to active blowing.

FAQ: Answers to Frequent Questions