Xiaomi devices are some of the most popular on the market because of their price-to-function ratio, but even they are not immune to crashes: sudden reboots, freezes, broken sensors or network connectivity problems. If your smartphone, TV or Xiaomi smart lamp is starting to behave strangely, don't rush to bring the equipment to the service center. 80% of the time, you can fix the cause yourself without special skills and tools.
In this article, we’ll look at the top 10 common causes of Xiaomi hardware glitches, from software bugs to hardware malfunctions, how to tell a temporary failure from a serious one, what settings to check first, and when to call a specialist, and why some models (such as the Redmi Note 10 Pro or Mi TV A2) are prone to specific types of crashes due to the features of the firmware.
We warn you right away: if your Xiaomi device fell into the water, suffered a mechanical impact or overheated (for example, charged in direct sunlight), the causes of the glitches are most likely hardware. In such cases, self-repair can aggravate the problem - it is better to contact an authorized service.
1. Software bugs: when firmware is to blame
The most common cause of bugs is software bugs. Xiaomi regularly releases updates for its devices, but sometimes new versions of MIUI or HyperOS contain critical bugs. For example, after upgrading to MIUI 14, many Redmi Note 11 users complained about spontaneous reboots, and Mi TV Q2 owners complained about loss of sound in some applications.
How to understand that the problem is software:
- 🔄 The device accidentally reboots for no apparent reason (not falling, not overheating).
- 📱 Applications fly out immediately after launch or are not working properly (e.g., the camera is not focusing).
- 🌐 Functions work, then they don’t (Bluetooth connects today, tomorrow it doesn’t).
- 🔋 The battery runs out too quickly after the upgrade.
What to do:
- Check the current firmware version in Settings → About Phone → MIUI (or HyperOS for new models).
- Go to the official MIUI Downloads website and compare your version to the latest stable one.
- If the update is available, install it. If the problem has occurred after the update, try rolling back to the previous version (instruction below).
Yeah, after the last update.|Yeah, but I'm not sure which version is to blame.|No, there were problems from the beginning.|Didn't update the firmware.-->
⚠️ Warning: A firmware rollback on Xiaomi may result in a bootloader lock if you use informal methods. For a safe downgrade, follow the instructions from the official website.
2.Overheating: Why Xiaomi is slowing down and turning off
Overheating is the second most common cause of glitches, and Xiaomi (especially low-end models like the Redmi 9A or POCO M3) are prone to overheating due to:
- 🔥 Long-term loads (games, video editing, high-resolution streaming).
- 🔋 Charges during heavy use (e.g., playing and charging your phone at the same time).
- ☀️ External factors: direct sunlight, heat in the room, cover blocking ventilation.
- 🛠️ A clogged charging connector or faulty battery.
How to check the temperature:
- Install the AIDA64 app or CPU Monitor from Google Play.
- Run the processor heating test (in AIDA64: Tools → System Stability Test).
- If the temperature exceeds 60°C in plain or 80°C under load, this is a critical overheating.
| Temperature. | Status. | What do you do? |
|---|---|---|
| 30–40°C | Norma. | There's nothing to do. |
| 40–50°C | Light heating | Close the background applications, reduce the brightness of the screen. |
| 50–60°C | Overheating | Stop using, let the device cool down. |
| 60°C+ | Critical overheating | Turn off the device, check the battery and cooling system. |
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If the phone gets hot when charging, try using Xiaomi's original Quick Charge power supply. Cheap charging often causes overheating due to unstable voltage.
3.Memory Lack: Why Xiaomi Lags and Slows
Xiaomi is known for having a lot of pre-installed applications and background processes in their MIUI/HyperOS firmware. If you have a model with 3/32 GB or 4/64 GB of memory, over time, the device begins to “gasp”: apps open for a long time, animations twitch, and sometimes the system completely stops responding to touch.
How to check the memory load:
- Go to Settings → About the phone → Memory.
- See how much RAM (RAM) and internal storage are occupied.
- If less than 1 GB of RAM or 5 GB of internal memory is free, it is a critical condition.
Ways to free up memory:
Remove the app cache in Settings → Applications → Application Management
Turn off the autoload of unnecessary applications in Settings → Battery → Autostart
Transfer photos and videos to the Mi Cloud or memory card
Remove unused apps (especially games and social media)
Reset the settings to factory (last option if nothing helps)-->
If even after cleaning the device continues to brake, try to turn off the animation system.
- Activate Developer Mode (7 times click on the MIUI version in your phone settings).
- Go to Settings → Additional → For developers.
- Find the points Windows animation, transition animation and Animator Duration – set the value 0.5x or Off.
4. Application conflicts: why games and social networks are flying out
Sometimes the glitches only appear in individual applications: for example, Instagram closes when you scroll through the tape, and PUBG Mobile crashes after 5 minutes of play.
- 🤖 Incompatibility of the application version with your firmware.
- 🛡️ Background activity blocking by Xiaomi’s optimization system.
- 🔄 Damaged application data (cache or settings files).
- 🚫 Restrictions MIUI for non-system applications (e.g., prohibition of auto-run).
How to fix it:
- Clear the cache and app data: Settings → Apps → [Select the app] → Storage → Clear the cache / Clear the data
- Turn off battery optimization for problem app: Settings → Battery → Battery optimization → [Select app] → No restrictions
- Allow auto-run (if the app doesn’t receive notifications): Settings → Applications → Application Management → Auto-run
- Install an older version of the app if the current one is incompatible. Download APK from APKMirror.
What if the game crashes on Xiaomi with a Snapdragon processor? Xiaomi devices on Qualcomm Snapdragon (such as POCO F3 or Redmi K40) sometimes have overheating protection that forcibly closes the games.
5 Network problems: Wi-Fi and mobile internet are not working
If your Xiaomi is not connecting to Wi-Fi, loses its mobile internet connection, or shows! no connection, the reasons could be both software and hardware. Consider both options.
Programmatic reasons:
- 📶 Failure in network settings (e.g., incorrect DNS or IP).
- 🔄 Conflict with a router (for example, if the router is running at 5 GHz and the phone does not support it).
- 📱 MIUI limitations for background traffic (data savings).
- 🔒 Lock MAC- addresses on the router side.
Hardware causes:
- 📡 The Wi-Fi/4G- module is damaged (e.g., after falling or falling moisture).
- 🔌 The antenna contacts have oxidized (a common problem after repair).
- 🔋 Weak signal due to battery failure (at a charge level below 15%, some models turn off the communication module).
Step-by-step diagnostics:
- Reboot your router and phone. 50 percent of the time, it solves the problem.
- Check network settings: Settings → Wi-Fi → [Your network] → Forget the network Then connect again.
- Reset network settings: Settings → System → Reset settings → Reset network settings
- Check the SIM- card: try inserting it into another phone, if the mobile Internet is not working and there is a problem in the operator or SIM.
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If Wi-Fi works but pages don’t load, try changing your DNS. In your Wi-Fi network settings, select 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare) instead of automatic.
6 Sensor Failures: Why a Gyroscope, Compass, or NFC Fails
Sensors in Xiaomi devices sometimes start to glittle after updates, falls or moisture.
- 📱 The gyroscope does not respond in games or the camera floats when shooting.
- 🧭 The compass shows the wrong direction in Google Maps.
- 💳 NFC does not read bank cards or tags.
- 🔦 The proximity sensor does not turn off the screen during the call.
How to check the sensors:
- Install the Sensor Test or Phone Tester app from Google Play.
- Run a test of each sensor, and if the values are unchanged or if the sensor shows N/A, the sensor is defective.
- For NFC, check if the module is enabled in the settings: Settings → Connections → NFC
Solutions:
- 🔄 Recalibrate sensors: Dial ##6484## → Test → Sensor Test (Not working on all models).
- 🛠️ Clean the sensor connector (if the phone falls or gets wet) and gently blow the holes next to the front camera with compressed air.
- 📱 Reset the settings to factory (if the failure is software).
⚠️ Warning: If the sensors stopped working after changing the screen or battery, it is likely that the master has damaged the plume, in which case only re-repair will help.
7 Hardware breakdowns: when without service can not do
If all the software methods have been tried, but Xiaomi is still bugging, the reason is likely hardware.
- 🔋 The battery is swelling (screen bulges, phone is not flat on the table).
- 💥 The device spontaneously shuts down at a charge level of 20-50%.
- 🔌 Charging is not working (even after the cable and power supply are replaced).
- 📱 The screen flashes, artifacts appear (strips, spots, flickering).
- 🔊 Speakers wheez or don't work after moisture hits.
What to do in such cases:
- Check the battery: If the phone is 30-40% off, the battery is probably worn out. Install the AccuBattery app to check the battery status. If health < 80%, it's time to change.
- Diagnose the motherboard: If the phone doesn't turn on, try pinching Power Button + Volume up for 10-15 seconds. If there's no reaction, plug it into charging for 30 minutes and try again.
Contact the service center.
- On the screen appeared colored stripes (damaged plume or matrix).
- The phone does not hold a charge even after the battery is replaced (a problem in the power controller).
- No power/volume buttons (replacement of flexible plume required).
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If your Xiaomi device is warranty-free, don’t try to repair it yourself! opening the case or replacing components will void the warranty.