Many Xiaomi and Redmi smartphone owners periodically notice a notification or message on the screen in the system application “Security” with a suggestion to optimize the device. For an inexperienced user, this phrase can sound like a complex technical procedure that requires intervention in the system code or flashing the gadget. In fact, device optimization in the MIUI and HyperOS ecosystem is a set of automatic and manual actions aimed at reallocating the resources of the processor, RAM and storage to achieve maximum performance.
Unlike standard Android smartphones, where memory management processes are often left to the system, Xiaomi’s shell offers an aggressive approach to background tasks. When the system offers optimization, it scans the device for junk files, unused applications and programs that consume battery power in the background. Understanding what it means to optimize the device in the context of your phone will help you not only speed up its operation, but also significantly extend battery life.
This process is not a one-time action, but a constant support of the gadget in good shape. Modern applications are becoming more demanding to resources, and cache accumulates at an enormous speed, taking up precious space. Regular optimization allows you to free up RAM and CPU time for those tasks that are important to you right now, whether it is playing, navigating or video.
The central element of the entire optimization system in Xiaomi smartphones is the built-in Security application, which is through this system gateway 90% of all cleanup and acceleration requests. When you see a suggestion to optimize a device, most often the initiator is this component, which acts as a controller that monitors the status of all subsystems of the phone in real time, and the functionality of the application goes far beyond just an antivirus. It combines tools for memory cleaning, battery management, traffic control and application permissions. For the user, this means that you don't need to install third-party "cleaners," which are often the sources of advertising and load themselves. MIUI Optimization already contains all the necessary algorithms for effective operation. ⚠️ Warning: Do not remove or disable the Security system application, even if you prefer third-party antiviruses. its removal can lead to unstable system operation, failure to receive notifications and inability to properly manage application permissions. When you run the optimization function, the app runs a quick scan of all the processes that are running, and it compares your current resource consumption to the reference values for your device model. If a process consumes too much power or memory for no apparent benefit, the system marks it as a candidate for closure. 📊 How often do you use the “Clean” button in the Security app?Daily Once a week Only when your phone brakes Never use it
One of the main aspects explaining what it means to optimize the device is working with RAM. Unlike permanent memory, where your photos and files are stored, RAM fills up with data from running applications instantly. When free RAM becomes scarce, the system begins to forcefully close background tasks, which can lead to restarting applications and losing unsaved data. The optimization process forcibly unloads from memory those applications that you are not using at the moment, but which continue to “hang” in the background. This frees the CPU resources for an active window. However, when free RAM becomes scarce, the system begins to forcefully close the background tasks, which can lead to the restor from the restoring of the application, as the counterproduct, it is so important that it can be so much more important from the memory, as the nuance of the memory, as the restoring of the memory, it is so it is so important that it is closed from the nuance of the memory, as the nuance of the memory, it is nuanced. 🚀 Launch Acceleration: Release RAM It allows heavy games and the camera to start faster, as the system does not need to unload other processes. 🔋 Charge savings: Background processes are often used GPS, Internet and sensors, consuming the battery even when the screen is off. 🧹 Residual files: When applications are closed, temporary files that may have been left behind are cleared, and it is important to understand the difference between manual and automatic cleaning. Xiaomi’s automation tries to be smart and keep frequently used apps in memory so they open instantly. Manually cleaning through the “clean” button in the Security app has a more radical effect, closing down absolutely anything that is not systemically important. The greatest performance gain from memory cleaning is observed on devices with volume RAM 6GB. 💡If you notice that a particular application is constantly closing in the background (for example, the messenger stops receiving messages), add it to the exclusion list ("Locks") in the menu of recent apps by pulling the card down.
Storage management and waste removal The second most important pillar of optimization is working with internal memory. Over time, the phone accumulates gigabytes of useless data: browser cache, thumbnails of viewed photos in messengers, error logs and remnants of remote applications. What does it mean to optimize a device in this context? It means doing a deep revision of the file system. Xiaomi's system analyzer can find not only obvious garbage, but also duplicate files, large video files that you haven't watched in a long time, and rarely used applications. Freeing up storage space is critical for performance, as when more than a memory is filled, it is important to keep it in storage. 85-90% The speed of writing and reading data drops significantly, causing lags throughout the interface. ☑️ Storage check Find more files 100 MBU Remove the messenger cache Clean the cart in the Gallery Remove unused applications: 0 / 4 Some files that the system flags as “recent” or “large” may be important to you, for example, downloaded maps for navigation or offline translators may take up significant space, but deleting them will deprive you of functionality without the Internet. So blindly pressing the “Clear All” button isn’t always the best solution. Data Type Description Recommendation for cleaning Cash applications Temporary files to speed up programs Safely delete, applications will create them again APK installers Application installers Files Can be deleted after installing programs Advertising Cash files in games and free applications It is recommended to delete regularly Screenshots Screenshots Screenshots Check manually before deleting Special attention deserves folder MIUI/Gallery/cloud/cache, where deleted photos are often accumulated that have not yet been synchronized with the cloud or have not been finally erased, promptly offering to free up the response space.
A battery is a resource that degrades over time, but the right software setup can significantly extend the life of a single charge. Optimization in Xiaomi involves analyzing “vampire” applications that consume energy even in standby mode. The system detects programs with high background activity and suggests limiting their operation. For example, the Power Saving mode limits background synchronization and reduces processor frequency; the No Limit mode, on the contrary, allows the application to operate in the background without restrictions, which is useful for navigators or training trackers, but harmful to autonomy. Proper distribution of these rights is the key to long work. ⚠️ Note: Do not keep the Super-Energy Saving mode on all the time unless there is an urgent need for it. It severely limits smartphone functionality, leaving only calls and messages, and can interfere with normal messenger performance. Also, optimization affects screen settings. Automatic brightness, adaptive refresh rate (if supported by the model) and dark theme are all tools that the system suggests using to save charge. Xiaomi also monitors battery wear and can offer calibration or simply inform about battery status. What is calibration on Xiaomi?Calibration is the process in which the system re-remembers the real battery capacity. This is done by fully discharging before switching off and charging to 100% incorrect state of charge.
Set up AutoRun and Application Permissions in Android, and especially in the shell MIUI, Many applications tend to start with the phone, which slows down the system load and consumes resources from the first seconds, and optimizing the device involves tight control over auto-start, and you decide which apps have the right to start automatically. To go to the AutoRun control menu, you need to go to the Security app, then select the Permission option and then AutoRun. Here, you should leave only those applications that you really need immediately after you turn on (for example, messengers or alarm). Others, such as marketplaces, social networks or games, it is better to turn off. 🛑 Advertising Blocking: In some versions MIUI Optimization includes disabling system advertising (MSA), This also reduces the load on the network and processor. 🔐 Access Control: Verifying microphone, camera and geo-location permissions helps to identify hidden tracking or data collection processes. 📉 Traffic reduction: Limiting background data for heavy applications saves not only battery but also megabytes of your tariff.Another important aspect is permission management.Apps often request access to features they don't need to work. For example, a flashlight doesn't need access to contacts, and a calculator doesn't need access to geo-position, and optimization involves revising these settings through the Settings menu. → Protection of confidentiality → Permit management. 💡Disabling AutoRun for a dozen unnecessary apps could speed up the phone’s turn on 3-5 save a few seconds and save up to 10% battery charge on standby.
For those who want to go beyond standard settings, Xiaomi offers hidden features. One of them is disabling optimization. MIUI It's paradoxical, but sometimes, optimizing is off (MIUI Optimization helps solve problems with installing applications from third-party sources or when working with ADB. But you have to be careful, and to access the advanced settings, you have to click on the build number several times in the About Phone section to activate the developer mode, and then you can find the "Enable Optimization" switch in the Developer menu. MIUI». Disabling it returns memory management to standard android, which can be useful for some specific tasks, but deprives you of branded energy saving chips. adb shell pm disable-user --user 0 com.miui.misys This team in ADB It turns off the system service that's responsible for some optimization and advertising functions, and you only need to use these methods if you understand what a particular package is responsible for. In most cases, the standard tools of the Security application are enough for comfortable use. ⚠️ Note: Changes to the Developer Mode or Use ADB-commands to remove system processes can lead to a malfunction of the phone, loss of warranty or cyclic restart (bootloop.
Frequently Asked Questions (FAQ)
Do I need to install third-party cleaning programs (Clean Master and analogues)?
No, it doesn't need to. Xiaomi's built-in Security app has deeper access to the system and is more efficient than third-party peers, which often consume resources and display ads themselves.
Why does the phone start to run slower after optimization?
It's a temporary effect. Once the memory is completely cleaned, it takes a while for the system to cache frequently used applications again, and it can also happen if you shut down system-critical processes that now have to restart.
How often should I perform a complete optimization of the device?
It is enough to do this once every 2-3 days or as a notification of memory shortage appears. Daily deep cleaning is not required and can even reduce the memory life due to constant write/delete cycles.
Does optimization affect internet speed?
By closing background applications that can consume traffic (email updates, photo sync), you free up the communication channel for active tasks, which can positively affect page load speed.