Xiaomi Redmi 4X The weather is hot: all the reasons and what to do in 2026

Xiaomi Redmi 4X — One of the most popular budget smartphones of 2017, but even 7 years after its release, owners are facing its overheating. Unlike the flagships with active cooling, this model is designed for passive heat dissipation, which makes it vulnerable to stress. If your machine is heated to 45-55°C for simple tasks or switches off from overheating - the problem requires diagnosis.

In this article, we will discuss 10 The main reasons why Redmi is hot 4X, — From software failures to hardware malfunctions, you'll learn how to check the temperature of the processor, what settings to optimize, and when to bring the phone to service. 2026 year, taking into account the features of the firmware MIUI 12/14 iron-ageing.

⚠️ Important: Normal working temperature of Redmi 4X — 40°C in plain and up to 50°C under load (games, video shooting) If the smartphone heats up above 55°C or switches off spontaneously is a critical signal!

1. CPU overload: why the Snapdragon 435 doesn't cope

Xiaomi Redmi 4X Equipped with a chipset Qualcomm Snapdragon 435 with 8 cores Cortex-A53 (1.4 GHz) and Adreno 505 graphics. In 2017, that was enough for basic tasks, but today even updates are available. MIUI And the background processes can load the processor 80 to 100 percent, and when you do that, the temperature goes up to 60 to 70 percent.°C.

The main resource eaters are:

• 🎮 Games (even) PUBG Mobile at low settings loads GPU 90%).
• 📷 Shooting a video in Full HD — processor encodes the flow in real time.
• 🔄 System updates (especially if downloaded in the background).
• 🤖 Background applications (messengers, social networks, activity trackers).

How to check the processor boot:

1. Install the AIDA64 or CPU Monitor app.
2. Open the tab. CPU And look at the percentage of core loading.
3. If at least 2-3 cores are loaded on 70%+ c simple, there's a problem.

Snapdragon 435 in Redmi 4X It has passive cooling, heat is only removed through the body, and with prolonged loading, the temperature can exceed 80.°C, which results in trottling (automatically reducing the processor frequency) or emergency shutdown.

2. clogged cache and junk files: how they affect temperature

In time, Redmi. 4X It accumulates app cache, temporary files and residues of remote software, which not only takes up memory, but also makes the processor work harder, processing excess data. For example, 1 GB of garbage can increase the load on the computer. CPU 15-20%, which directly affects the heating.

Where to look for garbage:

• 🗑️ Cache of applications (especially Facebook, Instagram, TikTok).
• 📁 Remnants of Remote Programs (Folders in the /data/data/).
• 📊 System Logs (.log and.tmp files).
• 🖼️ Image miniatures (folder) DCIM/.thumbnails).

How to Clean Redmi 4X rootless:

⚠️ Warning: Do not use cleaners like Clean Master or CCleaner – they often delete important system files and can aggravate overheating. MIUI.

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If the phone still warms up after cleaning the cache, check the autoload list. Many applications (such as AliExpress or Wildberries) start when you turn on and load the system.

3. Battery problems: aging and bloating

Redmi 4X equipped with a battery capacity of 4100 mAh (model) BM47). After 3-4 years of operation, its real capacity drops to 60-70%, and internal resistance increases:

• ⚡ Accelerated discharge (phone goes down in 2-3 hours).
• 🔥 Overheating during charging (temperature can reach 50-60)°C).
• 💥 Bloating (visually visible by the bulge of the back cover).

How to check the status of the battery:

1. Enter the code ##4636##.
2. Select Battery Information.
3. Check the Health Level (if any) setting in the AccuBattery app to check the actual capacity.

⚠️ Warning: If the battery is swollen, turn off the phone immediately and do not use it until the battery is replaced.

4. Failures of charger and cable

Cheap or damaged chargers are one of the main reasons for Redmi overheating 4X. The original power adapter for this model has characteristics:

• 🔌 Tension: 5V/2A (10W).
• 🔋 Type of connector: Micro-USB.
• 🛡️ Protection: against overload and short circuit.

Problems that cause heating:

• ⚡ Power mismatch (e.g. charging on 1A instead 2A).
• 🔥 Damaged cable (furnished insulation, oxidized contacts).
• 🔄 Use of wireless charging (not officially supported!).
• 🔌 Charging from USB-PC port (power is not enough, the phone warms and charges slowly).

How to check the charger:

1. Connect your phone to another adapter (preferably the original one).
2. Look at the charging indicator: if it flashes or shows Slow charging, the problem is in the power supply.
3. Touch the cable at the connector: if it is hot, replace it.

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Use only original or certified Quick Charge 2.0 chargers (if your Redmi is available). 4X Cheap Chinese adapters can produce unstable voltages, which overheats the power controller.

5. Viruses and Malware: Hidden Mining Bots

Redmi 4X Android 7-9 is vulnerable to viruses, especially if you install apps from third-party sources (APK-One of the most dangerous types of mining bots, which use the resources of the phone to mine cryptocurrency, can boot the processor to 100% in the background, causing overheating to 70.°C+.

Signs of infection:

• 📈 Unexplained traffic consumption (up to 1-2 GB per day).
• 🔋 Fast battery discharge (even in standby mode).
• 🔥 Continuous heating for no apparent reason.
• 🛑 Freezes and lags when opening applications.

How to check your phone for viruses:

1. Install Malwarebytes or Dr.Web Light.
2. Run a full scan (including system files).
3. Check the list of running processes in Settings → Annexes → Working.

⚠️ Note: If you find a suspicious application (e.g., com.android.system.update or com.qualcomm.thermald with a high load), do not manually remove it - it may be a system process!

6.Firmware problems: bugs MIUI custom-assembly

Official firmware MIUI for Redmi 4X (last — MIUI 12.5 on Android 9 often contains power and cooling management bugs, and many users install custom firmware (LineageOS, Pixel Experience) that may not be optimized for the Snapdragon 435.

Typical firmware problems:

• 🔄 Incorrect operation of the nuclei CPU (One or more nuclei are constantly active).
• 🔥 Absence of trottling (processor does not reduce frequency when overheating).
• 📵 Poor network optimization (constant signal search heats up modem).
• 🔋 Bugs in charge control (phone warms up even with 100% battery).

How to fix it:

1. Update your firmware to the latest official version via Settings → The phone. → Updating the system.
2. If you use custom firmware, check its compatibility with Redmi. 4X (santoni).
3. Reset the settings to factory settings (Settings → Additional → Recovery and Reset).

7. Physical damage: dust, moisture, falls

Redmi 4X It does not have protection by standard IP68, So dust and moisture can easily get inside the housing:

• 🌫️ Radiator pollution (dust acts as a heat insulator).
• 💧 Corrosion of contacts (heat sinking is worsened).
• 💥 Microcracks on the board (after falls).

How to check:

1. Light a flashlight into the connectors (Micro-USB, 3.5 mm, speakers) If you see dust, clean gently with a soft brush.
2. Check if the battery is wobbling (this is a sign of bloating or damage to the fasteners).
3. If the phone falls, inspect the case for cracks (especially near the camera and buttons).

⚠️ Warning: If moisture builds up inside your phone (for example, after being caught in the rain), don't turn it on! Remove the battery immediately (if possible) and dry it in rice or silica gel for at least 24 hours.

8. Wrong settings: what to turn off to reduce heating

Many functions MIUI They're useful, but they put a lot of work on the processor, and if you turn off unnecessary options, you can reduce the temperature by 5 to 10.°C.

What can be optimized:

• 📡 Constant Network Search: Go to Settings → SIM-maps and mobile networks → Search the network and select Manually.
• 📍 Geolocation: Disable it for unnecessary applications in Settings → Confidentiality → Permits → geodata.
• 🔄 Auto Update Apps: In Google Play, select Update only via Wi-Fi.
• 🎨 Animation and transitions: Enable Developer Mode (7 taps by Build Number in About Phone), then in Developer Settings reduce the animation to 0.5x.

Additional advice:

• 🌙 Use a dark theme (saves charge and reduces load on the body) GPU).
• 🔕 Turn off vibration when dialing and touch sounds.
• 📴 Reduce screen wait time to 15-30 seconds.

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The most effective setting to reduce heat is to limit background activity. Go to Settings → Battery → Optimize your battery and choose Strict for all unnecessary apps.

FAQ: Frequent questions about Xiaomi Redmi overheating 4X