Xiaomi smartphones have long gained popularity due to the ratio of price and performance, but even the flagship models of the Mi or Redmi series sometimes begin to “hang” for no apparent reason. Lags manifest themselves in different ways: from small delays when opening applications to the complete “thoughtfulness” of the interface for 5-10 seconds. In 80% of cases, the problem is solved without contacting the service center – it is enough to correctly diagnose the source of the brakes.
In this article, we will analyze all possible causes of lags on Xiaomi – from banal overheating to hidden firmware errors. MIUI. You'll learn how to distinguish hardware from software, which settings to optimize first, and when to really carry your phone for repair. MIUI, which can speed up or slow down the system.
Important: If your Xiaomi started to lay down after a fall, moisture or battery replacement, immediately go to the section on hardware malfunctions.
How to know exactly what Xiaomi is lagging (not just slow)
Not all slow-motion phone work is lag. — For example, the Redmi Note 8 Pro with a Helio processor G90T It's objectively weaker than the Xiaomi 13 Pro on the Snapdragon 8 Gen 2, and that's OK. Here are the signs of true lags requiring intervention:
- 📱 Interface freezes for 3-15 seconds (for example, when swiping between screens or opening the notification curtain).
- ⏳ Long-term open applications, even those that used to run instantly (like Settings or Camera).
- 🔄 Spontaneous reboots or departures from applications with the error “Application stopped».
- 🎮 Freezes in games despite sufficient charge and temperature.
- 📉 A sharp drop FPS In benchmarks (e.g. AnTuTu or Geekbench, the result is 30% lower than the average for your model).
If you have any of these symptoms on a regular basis, your Xiaomi is really laying down, and then you need to figure out the cause.
Programmatic causes of lags (and how to eliminate them)
In 90% of cases, the brakes on Xiaomi are caused by software errors, not hardware, starting with the most common, which is an overloaded system.
1.Clogged memory and cache
RAM volume (RAM) storage (ROM) If Xiaomi has less than 10% of the available space, the system begins to aggressively clear the cache in the background, which causes slowdowns.
How to check:
- Open the settings → About the phone → Memory.
- Look at the usage schedule RAM and ROM.
- Less than 1 GB free RAM 5GB ROM — clean up.
Decision:
- 🧹 Remove unnecessary apps through Settings → Annexes → Application management.
- 🗑️ Clear the cache: Settings → Warehouse → Cache data. → «Clean up».
- 📁 Move the files to SD-Map or cloud (e.g. Mi Cloud or Google Drive).
- 🔄 Use built-in optimization: Settings → Special opportunities → Optimization.
☑️ Xiaomi Memory Cleanup
Important! Do not clear the cache for system applications (e.g. com.miui.home or com.android.systemui) - this can cause interface failures.
2.Firmware failures MIUI
Shell MIUI It's known for its "chips," but it's also bugs, and it's often the lags that come after the update or because of a conflict of versions. For example, on the Xiaomi Mi 11, users complained massively about the brakes after upgrading to the previous version. MIUI 14 due to an error in the system's core.
How to diagnose:
- Check out the MIUI version in Settings → About Phone → MIUI version.
- Search online for reviews about your model + The firmware version (e.g. Redmi Note 10 Pro) MIUI 14.0.5 lays»).
- If there are many complaints, the problem is in the firmware.
Decisions:
- Reverse to stable version: Download old firmware from miuirom.org. Go to Settings → The phone. → Update the system. Press three dots. → «Select a firmware file" and specify the downloaded file.
- Resetting settings: Settings → Additionally. → Recovery and discharge → Resetting settings (does not delete files, but resets settings).
- Manual Update Installation: If a New Version is Available MIUI, but the phone does not see it, download the.zip file and install it through System Update.
What if Xiaomi is not turned on after the update?
Critical information: on models with a MediaTek processor (for example, Redmi Note 12), the firmware rollback can block the bootloader. Before rolling back, check the status of the bootloader with fastboot getvar anti - if the value is 3, rollback is forbidden!
3. Viruses and malware
Even Xiaomi with MIUI You can catch a virus, especially if you install applications from third-party sources (.apk).Some viruses masquerade as system processes (for example, com.qualcomm.thermalservice) and load the processor 100%, causing lags.
Signs of infection:
- 📈 Unexplained traffic consumption (check in Settings) → SIM-maps and mobile networks → Using traffic).
- 🔋 Quick battery discharge even in standby mode.
- 🚨 Appearance of unfamiliar applications in the list of installed.
- 📛 Advertising in places where it shouldn’t be (such as in the notification curtain).
How to treat:
- Install an antivirus (such as Malwarebytes or Dr.Web Light) and scan the system.
- Check Administrator Rights: Settings → Passwords and security → Device Administrator Rights – Remove Suspicious Apps.
- Disable the installation from unknown sources: Settings → Special opportunities → Access rights → Installation of unknown applications.
⚠️ Note: Some “optimizers” from Google Play (e.g. Clean Master or Google Play) DU Speed Boosters can themselves be a source of lags, they run in the background and consume resources. RAM In Settings → Annexes → Launched.
Hidden settings MIUI, phone-stop
MIUI It has a lot of hidden features that can both speed up and slow down a phone, many of which are enabled by default, but not optimal for all use cases.
1. Animations and visual effects
Beautiful transitions between screens and animations consume CPU and video accelerator resources. On weak models (e.g. Redmi). 9A) This can cause noticeable lags.
How to turn it off:
- Activate Developer Mode: Settings → The phone. → 7 times tap on the "version" MIUI».
- Back to Settings → Additionally. → For developers.
- Find the items: The scale of window animation → No animation; scale of transition animation → No animation; duration of animation → Off..
2. Background optimization and auto-start
MIUI It aggressively controls background processes, but sometimes it works against the user, for example, if you use Telegram a lot, but the system constantly kills him, the next time you open it, you have to wait for the data to load.
How to set up:
- 🔄 Turn off the autoclean. RAM: Settings → Annexes → Application management → Settings (⚙) → Auto-cleaning RAM → Off..
- 📱 Allow auto-run for desired applications: Settings → Annexes → Application management → [Select the application] → Auto-start.
- 🔒 Block important applications in RAM: Open Recent Apps, swipe down on the desired app and select “Anchor».
Exceptions: Do not turn off autocleaning RAM cellphone ≤ 3GB of RAM – This Can Make Lags Worse.
3. Energy conservation and productivity
MIUI It has several power saving modes that limit performance, such as in Super Energy Saving mode, the CPU frequency is reduced by 30 to 50 percent, causing brakes even in simple tasks.
How to check:
- Open Settings → Battery and Performance.
- See which mode is active: Performance – top speed (but quick discharge); Balanced – best option; Energy saving or Super saving – limits CPU/GPU.
Recommendations:
- 🔋 For games and hard tasks, choose Productivity.
- 📱 For everyday tasks – Balanced.
- ⚡ Turn off Adaptive Charging (in Settings) → Battery → Additionally), if the phone brakes when connected to charging.
| Energy saving regime | CPU Limitation | Limitation GPU | Background processes | When to use |
|---|---|---|---|---|
| Productivity | No. | No. | No restrictions. | Games, benchmarks, video processing |
| Balanced | 10%. | Up to 15%. | Optimized. | Everyday use |
| Energy conservation | Up to 30%. | Up to 40%. | Limited. | Low battery charge (<20%) |
| Super saving | Up to 50%. | Up to 60 percent. | Minimum | Critical charge (<10%) |
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Performance mode can reduce battery life by 20 to 30 percent, use it only when needed, then return to Balanced.
Hardware causes of brakes (when it is time for service)
If the software methods didn't work, the problem could be the hardware.-5 hardware causes of lag on Xiaomi:
- 🔋 Worn-out battery (capacity) < 70% of the face value).
- 🔥 Processor overheating (temperature) > 60°C to the plain).
- 💾 Damaged flash memory (bad blocks).
- 📡 Faulty module Wi-Fi/4G (Continuous search for the network loads the processor).
- 🛠️ Poor contact after repair (for example, after replacement of the display).
1. Battery diagnostics
Over time, lithium-polymer batteries degrade, and the controller begins to limit performance to save charge. On Xiaomi, this manifests as sharp brakes at a charge level below 30%.
How to check:
- Install the AccuBattery app (available on Google Play).
- See the battery health parameter: 90–100% is normal; 70–90% requires replacement; < 70% – critical, change quickly!
Check the discharge schedule: If the phone loses 10-20% of its charge dramatically (for example, from 40% to 20%), it is a sign of wear and tear.
Solution: Replace the battery at the service center, cost for popular models:
- Redmi Note 10/11: ~1 500–2 000 ₽;
- Xiaomi Mi 11/12: ~2 500–3 500 ₽;
- POCO F3/F4: ~2 000–2 800 ₽.
⚠️ Warning: After the battery is replaced, be sure to calibrate the controller: completely discharge the phone before turning off, then charge to 100% without interruptions. Repeat the procedure 2-3 times. This will prolong the life of the new battery.
Processor overheating
Xiaomi (especially Snapdragon processor models) 8xx Or Dimensity, they're prone to overheating.°C triggers trottling - a forced decrease in the frequency of the processor, which causes lags.
How to check:
- Install CPU Monitor or AIDA64.
- Look at the temperature in simple and under load: < 40°C is normal; 40-50°C - permissible; 50-60°C - risk of trolling; > 60°C - critical overheating.
Causes of overheating:
- 🧊 Dust-clogged radiator (relevant for Xiaomi Black Shark and other gaming models).
- 🔋 Faulty battery (heats even in simple).
- 📱 Use of a heat-locking cover.
- 🎮 Long-term games or video rendering.
Decisions:
- 🧹 Clean the charging connector and speakers from dust (you can vacuum cleaner at minimum power).
- 🔌 Use the original charger (low-quality RAMs can cause overheating).
- 🎮 Limit it. FPS in games: in Settings → Special opportunities → Select game mode 60 FPS instead 90/120 Hz.
- 🧊 In case of critical overheating (for example, in the POCO F3 with Snapdragon 870) try to solder the heat paste (only in the service!).
3. Damaged flash memory
If the phone starts to lay down while reading/writing files (for example, when shooting videos or installing apps), the degraded memory may be to blame. eMMC/UFS. This is especially true for budget models (Redmi). 8A, Redmi 9C), memory-storage.
How to diagnose:
- Install AndroBench and run the sequential reading/write test.
- Compare the results with the averages for your model (for example, for the UFS 2.1 reading shall be read > 500 MB/s).
- If the speed is lower by 40% or more, the memory is worn out.
Replacement of the motherboard (in 90% of cases it is impractical - it is cheaper to buy a new phone).
Why Xiaomi is Lagging in Games (and How to Fix It)
Gaming lags are a separate pain for Xiaomi users. Even flagships like Xiaomi 13 Ultra can see friezes in Genshin Impact or even on flagships like the Xiaomi 13 Ultra. PUBG The reasons are divided into two groups: software (corrected by settings) and hardware (require repairs).
1. Optimization of the game mode MIUI
MIUI It has a built-in Game Mode, but by default it's not always optimal. FPS or disable background processes, which causes slowdowns.
How to set up:
- Open the Settings. → Special opportunities → Game mode.
- Select the game from the list (or add it manually).
- Set up the parameters: Performance → High; Frequency of personnel → 90 Hz (if supported); Resolution → HD (for weak models) or FHD (for flagships; tactile feedback → Off (saving resources).
In addition:
- 🎮 Enable the Game Turbo Mode (available on the POCO and Black Shark game models).
- 📵 Turn off Auto Brightness in games (constant backlight changes load the processor).
- 🔊 Reduce the sound quality: Settings → Sound. → Sound quality → Balanced.
2.CPU Trottling in Games
Many games (such as Call of Duty Mobile or Honor of Kings) force the processor to run at its limit, causing overheating and a forced frequency drop (trottling). FPS 10-15 minutes of play.
How to fight:
- 🧊 Use a cooler for your phone (e.g. Black Shark FunCooler Pro).
- 🔋 Play on charge. > 50% (at low charge, energy saving works).
- 📉 Lower your graphical settings in the game (for example, turn off shadows or anti-aliasing).
- 🔄 Reboot your phone before playing (this cleans up) RAM background-process).
For advanced users:
adb shell settings put global thermal_config "0:0|1:0|2:0|3:0|4:0|5:0|6:0|7:0"This command disables trottling on some Xiaomi models (e.g., Xiaomi, POCO F3). Use it at your own risk! overheating can damage your phone.
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If you have microfreezes (short slowdowns) in the game, try turning off Wi-Fi Assist in Settings. → Wi-Fi → Additionally, this feature automatically switches to mobile data when there is a weak Wi-Fi signal, which can cause lags.