Your Xiaomi Redmi is hot like an iron and your battery goes down in a couple of hours? Overheating is one of the most common problems with the brand's smartphones, but it's not always related to a breakdown. 80 percent of the time, it's software settings, background processes or improper operation. For example, a Redmi Note 12 Pro+ with a Dimensity 1080 processor can heat up to 45°C when playing Genshin Impact -- and that's okay! But if the phone is warming up in standby or shutting down from overheating, it's time to sound the alarm.
In this article, we'll look at all the possible causes, from the banal charge with fast charging to hidden viruses in the firmware, how to check the temperature of the processor, what settings to turn off in MIUI, and when it's time to bring the phone to the service, and also unique data on Redmi models from 2022-2026, which are warmed more often than others due to the architecture of the chips.
1. Normal temperature vs overheating: when to sound the alarm?
Any smartphone gets hot when it's working is physics. But where's the line between "warm" and "hot"? Xiaomi says the normal operating temperature for Redmi is between 30°C and 40°C. Exceeding these values is already considered overheating, and at 45°C+, the protection kicks in: the phone starts to brake (trottling) or turns off.
How to check the temperature without a thermometer?
- 📱 Use the app. AIDA64 (shows the temperature of the processor, battery, module 5G).
- ⚠️ If the phone turns off at 42-45°C, this is a sign of a sensor or battery malfunction.
Look at the models with the problem chips:
| Model Redmi | Processor | Typical temperature under load | Cause of overheating |
|---|---|---|---|
| Redmi Note 11 Pro+ | Dimensity 920 | 43–48°C | Weak cooling system + 6 nm process technology |
| Redmi K50 | Dimensity 8100 | 40–45°C | High-clock frequency cores |
| Redmi 10C | Snapdragon 680 | 38–42°C | Budget cooling + cheap thermal paste |
⚠️ Warning: If your Redmi is heated to 50°C+ In simple tasks (like watching YouTube), this is a critical signal. Check the battery and thermopaste immediately - risk of battery bloating!
2. Software causes of overheating: what to turn off in MIUI?
MIUI is Xiaomi’s proprietary shell, known for its appetite for resources. Even on flagships like the Redmi K60 Pro, background processes can load the processor by 30 to 50 percent, leading to heat, and the first thing to do is optimize the settings.
Open Settings → Applications → Application Management and check:
- 🔄 AutoRun: Disable AutoRun for Unnecessary Apps (especially Messengers and Social Networks).
- 📊 Background Activity: Limit background work for games and heavy programs.
- 🚫 Notifications: Disable notifications from underutilized apps – they constantly wake up the processor.
☑️ Optimization MIUI reduce heat
Another common problem is MIUI updates, and after major updates (e.g., switching from MIUI 13 to MIUI 14), many users complain of overheating.
- 🐞 Bugami in firmware (especially relevant for betta versions).
- 🔄 Re-indexing files after updating (can last up to 24 hours).
- 📦 Background installation of system applications (e.g. Mi Video or Mi Browser).
💡
If overheating started after the upgrade, try to roll back to the previous version of MIUI via Fastboot.Instructions: miui.su/rollbacks
3. Games and heavy applications: how to reduce the load?
Redmi is a popular choice among gamers because of its price/performance ratio. But games like Call of Duty Mobile or PUBG can heat up the processor to 50°C in 15 minutes. How do you play without overheating?
First, set up the schedule:
- 🎮 V PUBG Select the Balanced Mode or HD (not HDR or Ultra HD).
- 🔧 In Genshin Impact, reduce FPS 30 and turn off the shadows.
- ⚡ Use the Game Turbo in the MIUI (Includes in the notification curtain when the game starts).
Second, keep an eye on the background, close all apps before playing (even Telegram and WhatsApp can load the processor by 5-10%), and remember to cool:
- 🧊 Buy a radiator with a fan (for example, Black Shark FunCooler Pro) – reduces the temperature by 5-10°C.
- 🍃 Play in a ventilated room (not under the blanket or in the sun!).
- 🔋 Do not play while charging – this doubles the battery load.
Why is the Redmi Note 12 warmer than the Note 11?
4. Charging and battery: the main culprits of overheating
If your Redmi is warming up during charging, the problem is likely one of three:
- Fast charging (33W, 67W, 120W) heats the battery to 40–45°C.
- Unoriginal cable / charger - can give unstable voltage.
- Worn-out battery – if the capacity has fallen below 80%, the risk of overheating increases 3 times.
How to charge Redmi without overheating?
- ⚡ Use the original charging (the box should have the inscription Xiaomi or Redmi).
- 🔌 Charge at room temperature (not in cold or heat).
- 📉 Turn off fast charging in settings: Settings → Battery → Charging settings → Deactivate "Fast charging"+".
- 🛑 Do not use your phone while charging (especially for games and videos).
Check the status of the battery:
- Open Settings → Battery → Battery status.
- If the battery is below 85%, it is time to change the battery.
- If the battery temperature exceeds 40°C in standby mode, this is a sign of bloating.
⚠️ Warning: If the Redmi battery is swelling (the body has become convex), turn off the phone immediately and do not turn on!
5. Viruses, Mining and Malware
Few people know, but Xiaomi is one of the most attacking brands among Android devices. Viruses can secretly mine cryptocurrency or display ads, loading the processor by 70-100%.
Signs of infection:
- 📈 The phone is warming up even in standby mode.
- 🔋 Battery goes down in 2-3 hours without active use.
- 🚀 B Settings → Battery → Battery usage is visible unknown processes (e.g. com.android.system with 30 consumption%).
How do you remove viruses?
- Install Malwarebytes or Dr.Web Light and scan the system.
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If you had overheated after the reset, the virus could have entered the system files, and then only flashing through Fastboot would help.
Hardware problems: when is a workshop needed?
If you've tried all the tips, but Redmi is still warm, it's the hardware.
- 🔥 Dried thermopaste between the processor and the radiator (relevant for phones over 2 years old).
- 📡 Faulty module 5G/Wi-Fi (It is hot even when the internet is off).
- 🔋 Bloated battery (can press on motherboard, causing overheating).
- 🛠️ Damaged plume (for example, after falling or repairing).
How do you diagnose?
- 🔍 Disassemble the phone (if you have experience) and check the thermopaste – it should be soft and uniform, without lumps.
- 📶 Turn it off. 5G If you're overheated, it's the network module that's to blame.
- 🔋 Light a flashlight on the battery – if it swells (even a little), change immediately.
The cost of repairs in the service center Xiaomi:
| Problem. | Cost (₽) | Duration of repairs |
|---|---|---|
| Replacement of thermopaste | 1 500 – 2 500 | 1 day |
| Battery replacement | 2 000 – 4 000 | 2-3 hours |
| Repair of the network module | 3 500 – 6 000 | 3-5 days |
⚠️ Note: If you choose to change the thermopaste yourself, use only liquid metal paste (for example, Thermal Grizzly Conductonaut!
7. Prevention: how to prevent overheating in the future?
To prevent your Redmi from becoming a hot water heater, follow these rules:
- 🌡️ Avoid extreme temperatures: Don’t leave your phone in the sun or in your car in the summer.
- 🔄 Update your firmware (but don’t put betta versions) MIUI).
- 🛡️ Use a heat sink case (e.g. Spigen Thin Fit with aluminum insert).
- 📵 Turn off mobile data overnight (saves battery and reduces modem load).
Also, clean your phone from garbage regularly:
- 🗑️ Remove the cache in Settings → Warehouse → Clear the cache.
- 📂 Clean Download folder from unnecessary files.
- 🚮 Use it. SD Maid to remove system debris.
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If you play Redmi a lot, buy an external cooler (like Arctic Breeze Mobile) that connects via USB-C and reduces the temperature by 10 to 15°C.