Xiaomi Redmi Note 4X
2017
heat up
battery-extension
hardware-breaking
In this article, we'll look at all the possible causes of overheating, from software failures to physical malfunctions, how to diagnose a problem, what settings to check first, when to go to a service center, and a list of dangerous symptoms that you can't use your phone.
If you have a Redmi Note 4X heats up to 45-50°C (can be checked in applications such as AIDA64 or CPU Monitor, that's a cause for concern. The normal operating temperature for this smartphone is 30-38.°C in plain and up to 40-42°C under load (games, video) Exceeding these values signals a problem.
1. Programmatic causes of overheating: what to check first
80% of Redmi Notes overheating 4X It's a software glitches, not a hardware glitches, and start with these steps, which don't require disassembling the phone, and often solve the problem.
System and application updates: Outdated software can interfere with hardware, causing the processor to run at its limit.
- 📱 Version MIUI: Go to Settings. → The phone. → Update system. Up-to-date firmware for Redmi Note 4X (codename) — MIUI 12.5 (Android 7-9, depending on the modification).
- 🔄 App Updates: Go to Google Play → My profile. → Manage applications and update everything that has an icon "↓".
- 🚫 Outdated. APK: Remove programs that haven’t been updated in a long time (especially from third-party sources).
Background and viruses. Some applications can hang in the background, loading the processor.
- Open the Settings. → Annexes → Run and see which programs consume the most resources.
- Use Antutu Benchmark or DevCheck to see the download CPU real-time.
- Check your phone for viruses with Malwarebytes or Dr.Web Light.
Resetting to factory settings is a last resort if nothing has worked.Warning: back up your data through Settings before resetting → Additionally. → Backup and reset. Once reset, the phone will go back to "clean" and many of the overheating problems will go away.
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If the phone is warmed after the update MIUI, Try to retrace the previous version via Fastboot. 4PDA Redmi Note-themed 4X.
2. Hardware causes: when iron is to blame
If the software didn't work, the problem is the physical components of the smartphone, and let's look at the most common cases.
Battery wear.Redmi Note 4X It's equipped with a 4,100 mAh battery, but it's degraded over time:
- 🔋 The phone is discharged in 2-3 hours at an average load.
- 🔥 It is warm even when it is turned off (if left on charging).
- 📉 V AIDA64 The battery state is either "bad" or "critical".
The solution is to replace the battery. Original battery for the Redmi Note 4X It costs about 1000-1500 rubles, and the replacement in the service will cost 500-800 rubles!
Dust and dirt in the case. Over time, dust clogs the CPU radiator and the charging connector, worsening the heat sink.
- Turn off the phone and remove the back cover (if it is removable).
- Gently blow the body with a compressor or use a soft brush.
- Clean the charging connector with a toothpick (not metal objects!).
What happens if you don’t clean your phone from dust?
If the phone is warming up even after replacing the battery and cleaning, the problem may be:
Detachment of chips (for example, Snappy 625 or memory module).
- Short circuit on the board.
- Thermopaste damage (on Redmi Note) 4X it dries up over time).
It's hard to diagnose this on your own, so you should go to the service, and the cost of repair depends on the breakdown.
| Type of malfunction | Cost of repair (₽) | Date(s) |
|---|---|---|
| Replacement of thermopaste | 800–1200 | 1 |
| Processor soldering | 2500–4000 | 3–5 |
| Repair of power chains | 1500–3000 | 2–3 |
| Replacement of motherboard | 5000–7000 | 5–7 |
3. Overheating during charging: the norm or the problem?
Many users have noticed that Redmi Note 4X It's the one that warms up when you're charging, and it can be both normal and a sign of a malfunction.
Normal cases:
- 🔌 Fast charging is used (for example, a 2-amper block).
- 📱 The phone is discharged to 0-10% - in this case, the charging current is maximum.
- 🎮 Simultaneously, there is charging and use of heavy applications (games, navigator).
Dangerous symptoms:
- 🔥 Body heats up to 50°C and higher (can be burned).
- 💥 Charging is interrupted or the phone is turned off.
- 🔋 The battery is swollen (seen on the raised screen or back cover).
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If the phone warms up when charging even when it's off, it's a sign of a faulty battery or charger. It's dangerous to use such a device!
What to do:
- Try another cable and power supply (preferably the original Xiaomi) 5V/2A).
- Charge the phone in the off state - so the heating will be less.
- If the problem remains, take it to the service to check the power chain.
4.Overheating in games: how to reduce the load on the processor
Redmi Note 4X It is not a gaming smartphone, but many people use it for the purpose of PUBG Mobile, Call of Duty or Genshin Impact.However, its Qualcomm Snapdragon 625 (14 nm) processor is prone to overheating under prolonged loads.
How to reduce heat:
- 🎮 Reduce graphical settings in games (set Balanced or Low Mode).
- ❄️ Use a cooling stand (costs from 300 rubles).
- 🔄 Close all background apps before playing (via Settings) → Annexes → Launched).
- 🔋 Play at 40-80% charge – with a low or full charge, the battery warms up more strongly.
Overclocking and undervolting. For advanced users, there's a way to reduce heat by changing the frequency of the processor:
- Install Kernel Adiutor (root rights required)
- In the section CPU Reduce the maximum frequency to 1.8 GHz (instead of the standard 2.0 GHz).
- Turn on the Thermal Engine and set the temperature limit to 45.°C.
☑️ Checklist before playing on Redmi Note 4X
⚠️ Attention: overclocking and manipulating the core can lead to unstable work or even a phone breeze!
5. Impact of networks 4G and Wi-Fi at temperature
Modules. 4G Wi-Fi in Redmi Note 4X They can also cause overheating, especially if the signal is weak.
How to check:
- 📶 Go to Settings. → SIM-maps and mobile networks → Select the network and see the signal level.
- 🔍 If the signal is 1-2 division, the phone will warm up more.
- 🌐 The same goes for Wi-Fi: if the router is far away, the module runs at its limit.
Decisions:
- Turn off network autosearch in settings SIM-map.
- Use the mode. 3G instead 4G, if the speed is not critical.
- Restart the router or bring the phone closer to it.
Hidden problem: unoriginal firmware. Some custom firmware (like LineageOS or Pixel Experience) can have poor modem optimization, which makes the phone warm even in the plain. If you use unofficial software, try going back to stock. MIUI.
6.When overheating is dangerous: signs of critical malfunctions
Some symptoms suggest that the phone needs to be urgently repaired, ignoring these signs can lead to a complete failure or even a fire.
Critical symptoms:
- 🔥 Temperature above 60°C (can be checked in AIDA64).
- 💥 The phone turns off on its own when heated.
- 🔋 The battery swelled (seems to deform the body).
- 🚨 There is a smell of burning or smoke from connectors.
- 🔌 Charging is not going or is going jerky.
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If the phone turns off at a temperature above 50°C, this is a sign of hardware protection, and further use could damage the motherboard!
⚠️ Note: If the battery is swelling, it is not possible:
- Charge the phone.
- Leave it on.
- Trying to open the hull yourself.
In this case, immediately turn off the phone, take out the battery (if possible) and take it to the service.
7 How to extend the life of Redmi Note 4X and avoid overheating
To your Redmi Note 4X You have been in the past and have not been warmed up, follow these tips:
General recommendations:
- 🔋 Do not allow full discharge (charge at 20-30%).
- ☀️ Do not leave your phone in the sun or in your car in the summer.
- 🔌 Use the original chargers.
- 🧹 Once every 3-6 months, clean the connectors from dust.
Settings to reduce heating:
- Turn off auto-update apps in Google Play.
- Set a dark topic (AMOLED-screen-warming).
- Limit background activity for social networks (Settings) → Annexes → Permits).
- Turn off unused sensors (NFC, GPS, if they don't need them).
Hardware improvements:
- Replace the thermopaste (worth it) ~500 rubles in the service).
- Install a metal bumper for better heat sink.
Use a cooled case (such as with gel inserts).
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If you play on your phone often, buy an external cooler (like Black Shark FunCooler). USB-C And it lowers the temperature by 10-15.°C.