Users often notice that their device is slowing down over time, and they immediately wonder: What is happening to Xiaomi’s Xiaomi phones? The answer lies in the complex interaction of hardware and software shell, which is constantly acquiring new features. System optimization is a key factor in the speed of interface response and application launch in the long run.
Making matters worse, today’s mobile apps are becoming increasingly demanding on CPU and RAM resources, and if you own a model that was released a few years ago, MIUI or the new HyperOS may not work as smoothly as it did on the first day of purchase, a natural process of aging electronics combined with the growth of code.
In this article, we will discuss in detail the main causes of performance decline, optimization errors and ways to return the gadget to its former agility. Understanding the processes that occur under the hood of the operating system will allow you to effectively manage the device and avoid critical failures.
Evolution of the MIUI shell and transition to HyperOS
For years, the MIUI shell has been considered one of the most functional yet hardest to use, and what has happened to Xiaomi phones in recent years is the constant addition of widgets, animations and background processes, and developers have been adopting more services, inevitably leading to increased resource consumption even on top-end processors.
The HyperOS transition was an attempt to address the backlog of optimization issues, based on a redesigned kernel to allow smoother performance on heterogeneous hardware, but users may experience compatibility bugs and unstable performance of individual modules during the transition.
⚠️ Note: When upgrading to HyperOS or a new version MIUI The first launch and background optimization of applications can take up to several hours, during which time the phone can heat up very much and run slowly - this is a normal process of re-indexing files.
It's important to understand that the new shell requires more processing power to render complex interfaces. If your device is in the budget or mid-range segment of past years, visual effects can cause micro-freezes. Turning off some animations in the developer settings often helps smooth out these roughnesses.
Problems with RAM and background processes
One of the main reasons why Xiaomi is slowing down is its aggressive memory policy, which tries to keep as many applications as possible in memory for quick launch, but when resources are scarce, it starts to unload and download them again, a process called swaping that puts a strain on the drive and the processor.
Chinese firmware versions and even global builds often contain a host of pre-installed services that run in the background. Google services, analytics, cloud syncs and theme store all consume valuable megabytes of RAM. The user needs to manually control the autoload list to free up resources for basic tasks.
For effective memory management, the following steps are recommended:
- 📱 Open the menu of recent apps and press the clean button to reset the cache of active processes.
- ⚙️ Go to Settings. → Advanced settings → Memory and study usage statistics.
- 🚫 Turn off auto-start for rarely used apps in the security menu.
- 🧹 Use the built-in Cleanup utility to remove temporary files that take up space.
Don’t rely on automatic memory cleaners alone; manual control allows you to pinpoint heavy applications that haven’t been closed correctly; and rebooting your device at least once a week regularly also helps to reset accumulated memory management errors.
☑️ Memory diagnostics
Depreciation of the drive and its effect on speed
Modern smartphones use UFS-type flash memory, which has a limited resource of overwrite cycles. What happens to Xiaomi phones after 2-3 years of active use? The drive fills with small files, fragments, and read/write speeds drop, which directly affects the time of booting the system and opening heavy applications.
When disk space runs out, the system cannot effectively use the wear-alignment algorithms. Critical memory filling (less than 10% free) leads to a sharp decrease in overall interface performance.
| Type of memory | Reading speed (approximately) | Impact on the system | Recommendation |
|---|---|---|---|
| eMMC 5.1 | up to 400 MB/s | Low, possible lags | Don't overload background tasks |
| UFS 2.1 | up to 850 MB/s | Average, stable job | Watch the vacant space |
| UFS 3.1 | up to 2100 MB/s | High, instant response | Optimal for gaming and multitasking |
| UFS 4.0 | up to 4200 MB/s | Maximum productivity | For flagship tasks |
To extend the life of the drive, you need to regularly free up space. Deleting large video files, transferring photos to the cloud and cleaning the messenger cache (WhatsApp, Telegram) can do wonders. Garbage files in social network folders can take up tens of gigabytes, quietly eating up the disk resource.
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Use the Cleanup feature in the Security app at least once a week to delete temporary files and cache that slow down the drive.
Processor overheating and trottling
The trottling defense mechanism is what happens to Xiaomi phones when they are under prolonged load or overheating. The system artificially lowers the CPU frequencies to lower the temperature and prevent component damage, and as a result, the user observes sharp falls in FPS in games and delays when switching between applications.
The causes of overheating can be both software (poor optimization of a particular upgrade) and hardware (wear and tear of the thermal paste, a dust-capped speaker). The heat throttle works faster if you use the phone in a tight case while charging or navigating, and heat removal is difficult in such conditions.
To combat overheating and trottling, it is recommended:
- 🌡️ Remove the protective case during resource-intensive tasks or fast charging.
- 🎮 In Game Turbo, select performance mode rather than energy saving.
- ☀️ Avoid direct sunlight and use of the navigator when the screen is turned on at maximum brightness.
If the phone is heating up even in downtime, it's possible that some app has fallen into a bug cycle. Check the battery usage statistics in the settings to find the culprit. Often background synchronization or a stalled process can load the processor without the user's knowledge.
⚠️ Warning: CPUs running at extreme frequencies due to software errors can cause the battery to bloat. If the phone is warming up to a simple one, look for malware or faulty app.
Optimization errors after updates
Often, users notice that problems begin immediately after the arrival of the system update. What happens to Xiaomi phones at this point? The file system is rebuilt, and the application cache becomes invalid for the new version of the software. The optimization process can take from 30 minutes to several hours of active use.
In some cases, the new update contains bugs that were not detected during the testing phase, which can lead to memory leaks or endless restart cycles of system services. Instability is often observed in the first versions of major updates (for example, the transition from Android 13 to 14).
What if the phone is worse after the upgrade?
If you upgrade and notice a critical performance drop, don't rush to carry your phone to the service. Give the device a night on charging with the lock screen on - the system will conduct deep optimization. If this did not help, consider rolling back on the previous version of the firmware through the Mi Flash Tool.
Practical advice on accelerating work
To keep the device running fast, you need to do regular prevention, and resetting to factory settings every 1-2 years is a radical but most effective way to get rid of accumulated software debris and configuration conflicts, which puts the phone back out of the box.
Use lightweight versions of apps where possible. Lite versions of social networks consume significantly less resources and RAM, and it is also worth turning off unnecessary visual effects in the developer menu, for example, reducing the scale of window animation to 0.5x.
Follow the following rules for the long life of the device:
- 🔋 Do not allow full battery discharge to 0% and do not keep constantly on 100% charge.
- 📶 Turn off Bluetooth and GPS, when not used to reduce the load on communication modules.
- 🔄 Check for app updates on Google Play regularly, as developers often release optimization patches.
Remember that no system can run forever without maintenance.Repeated cleaning, smart app management, and temperature control will allow your Xiaomi to delight you with speed even years after you buy.
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Regular maintenance (memory cleaning, temperature control, factory reset once a year) prolongs the life of the smartphone and keeps its performance at a high level.