Your Xiaomi (be it Redmi Note 12, POCO X5 Or the flagship Xiaomi 14) suddenly stopped responding to touch, “brakes” when opening applications or even “frozen” on the logo when turned on? MIUI, And the reasons can be both software failures and hardware malfunctions. In this article, we will not only list the possible culprits of the lags, but also give specific instructions for diagnosis and repair, from simple actions (such as cleaning the cache) to radical measures like flashing.
It's important to understand that if the freezes are systemic (in any application or desktop), the problem is likely to be the firmware or hardware, and if the phone is only slowing down in some programs (such as TikTok or Genshin Impact), the application itself is to blame, or the lack of resources, and we'll look at both scenarios, and we'll also tell you how to distinguish a software failure from a hardware breakdown, this will help save time and money on unnecessary repairs.
We warn you in advance: some methods (for example, resetting to factory settings or unlocking the bootloader) can lead to data loss. → Xiaomi Cloud or manually on PC. If the phone doesn’t respond at all, don’t panic: at the end of the article there is a section on how to “resuscitate” a completely frozen device.
1. CPU overheating: why Xiaomi is "braking" from high temperature
One of the most common causes of freezes is thermal throttling (automatic performance decline due to overheating). Xiaomi smartphones on Snapdragon chips (for example, Redmi Note 11 Pro).+ with Snapdragon 695) or MediaTek (as in the POCO M5) This is especially true due to aggressive optimization. MIUI. At temperatures above 45-50°C system begins to “strangle” the processor, which leads to lags, application crashes or a complete stop of the interface.
How do you check?
- 🔥 Install the app AIDA64 or CPU Monitor and check the temperature of the chipset in the Sensors section. Normal: up to 40.°C in plain, up to 60-70°C under load (games, video editing).
- 📱 Check if the back of the phone is heating up (especially in the top where the processor is located).
- 🔋 Charging your phone while gaming? it makes overheating worse - Xiaomi often blocks fast charging at high temperatures.
What do I do?
- ❄️ Remove the case (especially silicone or thick) – it worsens heat transfer.
- 🛠️ Clean the dust charger connector (use a wooden toothpick or compressed air).
- 🔄 Enable Performance Mode in Settings → Battery → Performance mode (but this will reduce battery life).
- 🚫 Avoid simultaneous charging and playing – this is the most common cause of overheating.
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If the phone is heated even in plain, check if a cryptocurrency mining app (such as the Pi Network) is working in the background.
Lack of RAM: Why MIUI «Killing apps
Firmware MIUI It is known for aggressive RAM control: the system actively kills background processes to free up memory. 9A With 2GB of RAM, this leads to constant hanging when switching between applications. Even flagships like the Xiaomi 13 Ultra with 12GB of RAM can experience lags if too many programs are running in the background.
How do you check?
- 📊 Open the Settings. → The phone. → Memory and see how much RAM is left. If it's less than 20 percent, that's critical.
- 🔍 Run Task Manager (hold the recent apps button) and see which programs consume the most RAM.
Decisions:
- 🗑️ Enable the option of Memory Cleanup in Settings → Special facilities → Cleaning up memory when blocking the screen.
- 🛑 Turn off auto-run of unnecessary apps: Settings → Annexes → Autostart control.
- 🔄 Reboot your phone once every 1-2 days – it resets the RAM cache.
- 📱 For models with 4GB of RAM or less: install a launcher from a third-party developer (like Nova Launcher) that is less voracious.
3.Firmware failures MIUI: bugs, updates and “raw” versions
MIUI — It's one of the most customized firmware, but its main drawback is instability:
- 🆕 Beta versions (e.g, MIUI 15 Developer ROM), which often contain critical bugs.
- 🌍 Global firmware for Chinese models (for example, if you have stitched Redmi) K50 Global version via Fastboot).
- 🔄 Updates by air» (OTA), which are sometimes set up with errors.
Signs of firmware problems:
- The phone hangs on the logo. MI switch-on.
- The interface “poops” even in standard applications (Calls, Messages).
- The com.android.systemui error appears or MIUI Daemon.
How do you fix it?
- Reset the firmware cache: 1. Turn off the phone. 2. Press the power button + Volume up until the Fastboot logo appears. 3. Select Recovery Mode (volume buttons), confirm with the power button. 4. From the recovery menu, select Wipe cache partition → Yes. 5. Reboot the phone.
- Reverse to the stable version MIUI: Download the full firmware for your model from en.miui.com (choose Stable, not Developer).
What if the phone doesn’t turn on after the upgrade?
4.Culled memory: why 100% storage boot kills performance
When the phone’s internal memory is full, the system starts using it as a virtual swap, leading to critical lags, especially for Xiaomi’s budget models with 32-64 GB of storage, where less than 10% of free space is left after installing apps and cache.
How do you check?
- 📊 Go to Settings. → Storage. If it's less than 5GB free, that's critical.
- 🔍 Check the folders: DCIM/Thumb — Photo miniatures (can take up several GB). Android/data — cache of games and applications (for example, PUBG Download – Download files that have not been used for a long time.
How do I make room?
| Method | Efficiency | Risks. |
|---|---|---|
| Cleaning the application cache (Settings) → Annexes → Clear the cache) | ⭐⭐⭐ (1-3 GB) | Low (may reset authorization in some applications) |
| Remove duplicate photos via Google Photos or Gallery Doctor | ⭐⭐⭐⭐ (2–5 GB) | Medium (risk of deleting the files you want) |
| Transfer of applications to SD-map (Settings) → Annexes → Move it to SD) | ⭐⭐ (0.5–2 GB) | High (not all apps support portability) |
| Reset to factory settings | ⭐⭐⭐⭐⭐ (5-10 GB) | Critical (loss of all data) |
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If your phone is still slowing after cleaning up your memory, check if it has fake apps (like the Fake Google Play) that can disguise themselves as system utilities and consume resources in the background.
5. Application conflicts: viruses, miners and “heavy” programs
Even on powerful Xiaomi smartphones, some apps can cause freezes, most often to blame:
- 🎮 High-demand games (Genshin Impact, Call of Duty Mobile) – if the phone does not pull the graphics settings.
- 🔍 Antiviruses and cleaners (Clean Master, 360 Security) – they often work in the background and conflict with the security system. MIUI.
- 💰 Cryptocurrency miners (e.g. Pi Network or hidden services in Chinese firmware).
- 📱 Modified APK (hacked versions of games or applications from third-party sources).
How do we find the culprit?
- Launch your phone in Safe Mode: 1. Press the Power button before the turn off menu appears. 2. Hold your finger on the Options Turn off → If there are no lags in Safe Mode, the problem is in one of the installed applications.
- Check the battery consumption statistics: Settings → Battery → Battery use. Apps that consume >10% charge in background, suspicious.
The list of apps that most often cause hangings on Xiaomi:
- 🎮 Free Fire, PUBG Mobile (if you play at high graphics settings).
- 📺 TikTok, Kwai (due to aggressive video caching).
- 🔒 Clean Master, DU Battery Saver (Conflict with Optimization) MIUI).
- 💰 Pi Network, Bee Network (mining cryptocurrency in the background).
1. Check reviews on Google Play (if the rating is below 3.5 – delete).
2. View permissions in Settings → Annexes → Permits.
3. make a backup copy of the application data (if necessary).
4. Delete cache and data (Settings) → Annexes → Warehouse → Clear the data).-->
6. Hardware malfunctions: when the "iron" is to blame
If all the software methods have been tried, but Xiaomi is still hanging, the problem may be hardware.
| Malfunction | Signs. | Decision |
|---|---|---|
| Battery wear (swelling, loss of capacity) | The phone turns off at 20-30% charge, overheats when charging, hangs on the logo. | Battery replacement (cost: 1,500–3,000) ₽ model-wise). |
| Damage to flash memory (eMMC/UFS) | Persistent errors when writing files, applications fly out with the message Storage error. | Diagnostics via Mi Flash Tool or replacement of memory chip (expensive, often impractical). |
| Oxidation or dumping of chips on the motherboard | The phone freezes when vibration, falls or after moisture hits. | Disassembly and soldering in the service center (from 3 000) ₽). |
| Failure of Wi-Fi/Bluetooth module | Freezes when connected to a network or wireless devices. | Disable the module through Settings → For developers → Disconnect Wi-Fi (Temporary Solution). |
How do I check for iron?
- 🔋 Check the battery status through the AccuBattery app, and if the battery is under 80% healthy, it's time to change it.
- 🔧 Disassemble the phone (if you have experience) and inspect the board for bloated capacitors or oxidized contacts.
- 💧 If the phone fell into the water, even if it worked normally, oxidation could have occurred months later.
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If Xiaomi is stuck when connecting a charge, try another cable and power supply. Cheap accessories often cause power surges that lead to failures.
7 How to "resuscitate" a fully got stuck Xiaomi phone
If your smartphone doesn’t respond to touch, doesn’t turn on, or hangs on your logo, try the following methods (from the safest to the most radical):
- Forced reboot: Press the power button + Volume up for 10 to 15 seconds. If it doesn't work, try the Power Button. + Loudness down.
- Entrance to Recovery Mode: If the phone turns on but does not load beyond the logo: 1. Turn off the device (forced if necessary). 2. + Volume up until Recovery menu appears. 3. Select Wipe cache partition → Yes. 4. Reboot the phone.
- Reset to factory settings: If previous methods didn't help, do a hard reset (all data will be deleted!): 1. In the Recovery menu, select Wipe data/factory reset. 2. Confirm the action (Yes). 3. After reset, select Reboot system now.
- Fastboot firmware: If the phone doesn't even turn on in Recovery, you have to flash it through your PC: 1. Download the Mi Flash Tool and the full firmware for your model from en.miui.com. 2. Connect your phone to your PC in Fastboot mode. + Volume down). 3. In Mi Flash, select the downloaded firmware and press Flash. ⚠️ Note: Fastboot firmware deletes all data and can lock your phone if the wrong version is selected. MIUI. Use only stable firmware for your model!
8. Prevention of hangings: how to prevent problems in the future
To make your Xiaomi work consistently, follow these guidelines:
- 🔄 Update regularly MIUI, But avoid betta versions. Check out the reviews on the forums for new firmware (4PDA, XDA Developers).
- 🗑️ Clean the cache once every 1-2 weeks through Settings → Warehouse → Clear the cache.
- 🛡️ Do not install antiviruses in the MIUI Security already exists. Third-party cleaners only make performance worse.
- 🔋 Avoid cheap charging – use original accessories or certified (Anker, Baseus).
- 📱 Do not fill the memory “to the end” – leave at least 5-10 GB of free space.
Critical information: If your Xiaomi is on a MediaTek chip (like Redmi) 10C or POCO M4 Pro) started to freeze after upgrading to Android 13/MIUI 14, The problem could be in the graphics accelerator driver. MIUI 13 Or install custom firmware (for example, Pixel Experience).
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On Xiaomi models with AMOLED-screens (e.g. Xiaomi) 12T or Redmi K50 Pro) freezes may be due to a malfunction of the display module. If the screen starts to "glut" (artifacts, flickering) before freezing - this is an excuse to carry the phone to the service.