Owners of flagship devices of 2018, such as Xiaomi Mi 8 Pro, often face a natural slowdown of the operating system after several years of active operation. Accumulated digital debris, temporary files and remnants of remote applications occupy valuable internal memory space, which directly affects the performance of the Snapdragon 845 processor. Regular cleaning of the cache allows you to return the device to the former sharpness of the interface and extend its comfortable life without replacing the gadget.
Optimization doesn’t require root rights or technical expertise, but it’s important to understand the difference between the types of data being cleaned. In this article, we’ll detail secure memory freeup methods that won’t result in loss of personal photos or contacts. Proper file system maintenance is key to Android’s long-term stability.
Note that MIUI, the proprietary shell from Xiaomi developers, has its own features of storing temporary files. Standard cleaning methods may not affect hidden system caches, which also need attention. Below are proven ways to help you effectively manage the resources of your smartphone.
Cleaning the cache through the standard Security app
The easiest and most affordable way to delete temporary files is to use the built-in system tools. The MIUI shell has a Security app pre-installed, which automatically scans the device for debris. Run the program from the home screen and click on the large green Cleanup button for initial analysis.
Once the scan is complete, the system will prompt you to delete files that do not affect the operation of applications, usually the remnants of installation packages, image sketches and error logs. Auto-cleaning is safe for user data, since MIUI algorithms do not touch personal folders.
For a more in-depth analysis in the Security app, go to Cleanup (Broom Icon) and you will see a detailed breakdown by category: system debris, app cache, advertising files and large files. It is recommended to carefully study the Big Files list, as there may be forgotten videos or archives.
⚠️ Warning: When cleaning through a standard application, carefully check the ticks. Some items may contain saved offline cards or messenger cache that you will have to download again.
Manually cleaning the cache of specific applications
If a particular program, such as Instagram or YouTube, is not working properly or takes up too much space, you need to clean it individually. Go to the Settings menu, then select the App item and find All Apps.
Inside the app menu, click on the Memory or Storage button, and you'll see two main buttons: Clear cache and Clear everything. The first one deletes only temporary files, the second one resets the app to the state immediately after installation, removing logins and settings.
- 📱 Social media is accumulating gigabytes of pictures and videos that can be safely removed through the storage menu.
- 🗺️ Navigators store a map cache that is useful in the absence of the Internet, but takes up a lot of space.
- 🎮 Games can store temporary update files that are no longer needed after installing the patch.
Use Clear Cache regularly for heavy applications, which won't delete your emails or accounts, but will free up space. If the app malfunctions, a full reset can sometimes help, but remember to re-authorize.
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Use the Memory feature in the settings of each heavy application once a month – this is more effective than cleaning the system altogether.
Using Developer Mode for Deep Cleaning
For advanced users Xiaomi Mi 8 Pro is available hidden functionality through the developer menu. To activate it, you need to quickly click 7 times on the build number in the About section. After the message "You became a developer" in the settings menu will appear a new item.
In the For Developers section, scroll down to Memory or use the command via ADB for more subtle management. However, Dalvik's built-in cache cleanup feature can be useful after major system updates. This reassembles app optimization for the current version of Android.
adb shell pm trim-caches 999999999This command, which is done via a computer and USB debugging, causes the system to delete cached data that has been out of use for a long time, a more aggressive method than standard cleaning, and is particularly effective when the internal storage is almost full.
| Type of cleaning | Security | Efficiency | The need for a PC |
|---|---|---|---|
| Standard (MIUI) | Tall. | Medium | No. |
| Manual (Annexes) | Tall. | Tall. | No. |
| ADB team | Medium | Maximum | Yes. |
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Developer mode allows you to remove the system cache, which is not available through the usual settings menu, but requires caution.
Memory Analysis Through a Conductor
Often users are unaware that a significant portion of the memory is occupied by files in downloads or messenger folders. Xiaomi's Built-in Explorer has a convenient analysis function. Click on the menu (three bars) and select Storage Analyzer.
It visualizes space by showing the largest files and folders, so you can sort content by type: documents, images, videos, or applications, and it allows you to quickly find and delete forgotten downloaded files or duplicates.
- 📸 Screenshots and screen recordings can take up gigabytes if not sorted periodically.
Be careful when deleting files through Explorer, only delete the one you are sure of, and system folders with names like Android, MIUI, or data are best left unscathed without a deep understanding of the file structure.
⚠️ Note: Delete files from the folder Android/obb This can cause games to stop running and require reloading resources.
What is a folder.thumbnails?
Cleaning the cache in Recovery mode
If the smartphone is unstable, freezes or does not boot, cleaning the recovery partition cache will help. This method does not delete personal data (photos, contacts), but resets system temporary files. To enter Recovery mode on the switched off Xiaomi Mi 8 Pro, press the Volume Up and Power buttons simultaneously.
When the Mi logo appears, release the power button, but keep the volume up. On the menu, the volume buttons navigate, and the power button selects. Find the Wipe Cache Partition and confirm the action.
☑️ Checklist before entering Recovery
It takes a few seconds, and then you get a message of success. Select Reboot to reboot. It can take longer than usual to start the system for the first time, because Android will re-optimize the applications. This is normal behavior after deep cleaning.
Prevention and automation of the process
So you can set up automation to avoid manual cleaning all the time, and the Security app has a scheduler function, go to the cleaner settings and turn on the garbage cleaner, and the smartphone will delete temporary files at a given time, like at night.
It is also recommended to set a cache limit in memory settings if such an option is available in your version of MIUI. Regular restart of the device (once every 3-4 days) also helps the system to reset accumulated errors in RAM.
- ⏰ Planner allows you to set the time when the phone will be cleaned without your involvement.
- 🔄 Rebooting once a week cleans up RAM and completes the suspended background processes.
- 🚫 Removing Bloatware – Removing pre-installed apps you don’t use reduces the amount of junk you create.
Compliance with simple digital space hygiene rules will allow the Xiaomi Mi 8 Pro to stay fast even years after its release.Don't ignore space shortage notifications, as a full drive significantly slows down the recording and reading of data.
⚠️ Attention: Third-party client apps from Google Play are often the source of advertising themselves and can slow down the system. MIUI fairly.
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Don’t install questionable apps to “accelerate your phone” – Android and MIUI are both more efficient and safer.