Cleaning Xiaomi Mi A3: from cache to complete reset – all ways

Xiaomi Mi A3 is a popular smartphone with a clean Android One, but even it eventually begins to “slow down” due to clogged memory, accumulated debris in the cache or fragmented files. If your device becomes slower, applications suddenly close, and the “Memory is full” appears too often – it’s time to clean up the whole thing.

In this article, we will look at all the possible ways to clean the Mi A3, from manually cleaning the cache and removing unnecessary files to completely resetting the settings (hard reset), focusing on safe methods that will not damage the data, and also explain how to avoid typical cleaning errors. If you are not sure which way to choose, at the end of the article there is a comparison table with the pros and cons of each option.

1.Cleaning the app cache: A quick way to free up memory

Application cache is a temporary file that is created to speed up programs, and over time, it accumulates and takes up gigabytes of memory, although many of them are no longer needed. On the Xiaomi Mi A3, the cache can be cleared for individual applications and for the entire system at once.

To clear the cache for a specific application:

1. Go to Settings → Applications and Notifications → Show all apps.
2. Select the app you want (like YouTube or Chrome).
3. Press the Warehouse and cache → Clear the cache.

For mass cleaning of cache of all applications:

1. Open the Settings → Storage.
2. Slip on the item Other Appendices.
3. In the upper right corner, click on three dots and select Sort by size.
4. Flick through the list and clear the cache for the heaviest apps.

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If the app is slower after cleaning the cache, don't worry, it will restore the necessary temporary files the next time it runs, but without any debris.

⚠️ Note: Do not clear cache for system applications like Google Play Services or Android System WebView unnecessarily.

2. manually remove unnecessary files and debris

Even if you regularly clean the cache, in memory Mi A3 accumulate other unnecessary files: duplicate photos, downloads from messengers, old ones APK-Files and other debris that can be manually removed through the built-in file manager or third-party utilities.

Instructions for manual cleaning:

• 📁 Check the Download folder – there are often outdated files that are not needed for a long time.
• 📸 In a file. DCIM Find the.thumbnails subfolder – here are stored thumbnails of photos that can be safely removed.
• 📦 Remove the old ones. APK-file APK (If there is one, they remain after installing applications from third-party sources.
• 🗑️ Note the Bluetooth folder – there may be unnecessary files transferred over Bluetooth for years.

For convenience, use the built-in storage analysis:

1. Go to Settings → Storage → Free up the space.
2. Wait until the analysis is complete.
3. The system will show file categories (e.g., “Large Files”, “Unused Applications”) that can be deleted.

Outdated Screenshots (Folder Pictures/Screenshots)

Google Maps Cache (data/com.google.android.apps.maps folder)

Logs and dumps (folders with.log or.dmp extension)

Files from Telegram/WhatsApp older than 3 months (Download folder)

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⚠️ Note: Do not delete files from Android folders, MIUI Or system, it can disrupt the operating system, and if you're not sure what the file is, you better not touch it.

3.Use of third-party utilities for deep cleaning

If manual cleaning seems complicated, you can use specialized applications that automatically find garbage, duplicates and optimize the smartphone. A3 fit:

• 🧹 Files by Google – the official application from Google with the function of cleaning garbage and finding duplicates.
• 🚀 CCleaner – a classic utility for cleaning cache, history and temporary files.
• 📊 SD Maid is an advanced tool for finding “dead” files and remnants of deleted applications.
• 🔍 Clean Master is a popular solution with the function of speeding up the smartphone (but be careful with advertising).

Example of Files by Google:

1. Install the app from Google Play.
2. Open the Cleanup tab.
3. Click Free Space and select file categories to delete (e.g., “Unnecessary Screenshots” or “Dublicates”).
4. Confirm removal.

⚠️ Note: Some utilities (such as Clean Master) may aggressively delete files or display false warnings about “critical errors.” Use them with caution and always check what is suggested to delete.

Files by Google

CCleaner

SD Maid

Clean Master

Another one (I will write in the comments)

I don't use utility.-->

4. Cleaning up system debris through Recovery mode

If the smartphone is slowing down a lot and standard methods don't help, you can use Recovery mode. This is a special menu for servicing the device, where you can clean the partition cache (Wipe Cache Partition) and reset settings. For Xiaomi Mi A3, logging into Recovery is done like this:

1. Turn off your smartphone.
2. Press the power and volume buttons up simultaneously.
3. Hold them until the Mi logo appears, then let them go.
4. With volume buttons, select Wipe & Reset and then Wipe Cache.
5. Confirm the action and wait for the completion.
6. Reboot the device (Reboot).

This procedure does not delete user data, but it clears the system cache, which can solve lag problems. If you want to reset your settings completely, select the Wipe option in Recovery. Data/Factory Reset – but remember, it will delete all files, apps, and accounts!

⚠️ Warning: Do not confuse Wipe Cache and Wipe Data.The former simply cleans temporary files, while the latter erases all the contents of the phone, including photos, contacts and messages.

5. Reset to factory settings (Hard Reset)

If all previous methods failed, the last option is a complete reset, which will return the Xiaomi Mi A3 to the “out of the box” state by removing all data, applications and settings.

• 🔄 Backup important files (photos, contacts, messages).
• 📋 Write down logins and passwords from accounts (Google, Mi Account, social networks).
• 📱 Make sure the phone has enough charge (minimum 50%).
• 🔌 Disable all accounts (such as Google) to avoid being blocked after a reset.

How to perform Hard Reset:

After resetting the Xiaomi Mi A3 will require re-authorization in the Google account that was previously linked.If you forget the password, the phone may lock (FRP Lock)! To avoid this, be sure to delete the Google account in the settings before reset.

6.Optimize the post-cleaning operation

Cleaning up your memory is only half the battle, so that the Mi A3 runs fast and doesn't get clogged with garbage again, follow these tips:

• 📵 Limit the background activity of applications: go to Settings → Annexes and notifications → Special access → Optimize your battery and select All apps. Disable optimization for instant messengers and other important programs.
• 🔄 Regularly update the software: check for updates in Settings → System system → System Update: Topical Android Versions and Security Patches Improve Performance.
• 🚫 Remove or freeze unnecessary system applications (e.g. Mi Video, Mi Music) if you don’t use them).
• 📥 Set up automatic download cleanup: In Files by Google, enable Auto Cleanup for Download folder.

If you use a microSD in the Mi A3, format it every six months in exFAT or FAT32 format (via your computer) to prevent file fragmentation.

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After cleaning, don't install all the apps at once. Add them gradually, watching the performance of the smartphone. Often lags arise from one "gluttonous" application, not from the overall load.

7. Frequent mistakes and how to avoid them

When cleaning the Xiaomi Mi A3, users often make mistakes that lead to data loss or device deterioration.

• 🗃️ Delete system files. Never touch Android folders, MIUI or files with the.odex,.apk extension in the root directory – this can lead to bootloop (locked on).
• 🔋 Reset low battery charge: If your phone runs out during Hard Reset, it can damage your firmware. Always charge your device to at least 50% before resetting.
• 🔒 Forgotten FRP Lock. If you don't delete your Google account before you reset, your phone will require an old password when you first turn on!
• 📲 Using questionable "cleaners." Some apps (like Phone Cleaner Master) show false warnings about "viruses" or "critical bugs" to sell the premium version.

⚠️ Note: If after cleaning, Mi A3 Stop turning on or hanging on the logo, don't panic:

1. Press the power button for 20-30 seconds to force reboot.
2. Log in to Recovery and repeat Wipe Cache.
3. If nothing helps, try to reflash your phone via Fastboot (the instructions are available on the 4PDA forum).

FAQ: Answers to Frequent Questions