How to clean a Xiaomi smartphone: from garbage in the system to physical cleaning of the case

Xiaomi smartphones are some of the most popular in the world, but even they eventually start to “brake”, overheat or discharge quickly. The reason most often lies in the accumulated digital garbage: the remnants of remote applications, cache, duplicate photos and unnecessary files. And if you add dust in the speakers or a polluted charging connector, the problems are exacerbated. In this article, we will examine all the cleaning methods, from software to physical, which will return your Redmi, POCO or Mi to its former speed and stability.

It's important to understand that cleaning a smartphone is not a one-time procedure, but a systematic care. Xiaomi manufacturers build optimization tools into MIUI, but they don't always cope with deep pollution. We'll show you how to combine built-in functions with third-party utilities and mechanical cleaning to maximize the effect. And we'll also tell you what actions can harm the device - for example, why you shouldn't clean the cache of all applications in a row or use alcohol to process the screen.

1. Cleaning up the system: removing digital garbage

The first step is to get rid of the unnecessary files that take up memory and slow down, and MIUI has a built-in Cleanup tool (formerly Security) to do that, and you can find it in the app menu or search the system.

• 🗑️ Garbage files: temporary data, remnants of deleted programs, empty folders.
• 📁 Duplicate: Copies of photos, videos and documents (especially relevant for users of Google Photos).
• 🔍 Large files: high-resolution video, unused APK, archive.
• 📱 Cache of applications: saved data of messengers, social networks and games.

To start a deep cleanup:

1. Open the Cleanup app.
2. Press Deep Clean (Password/Print confirmation may be required).
3. Select file categories for analysis (we recommend that you note everything).
4. Click Clean and confirm the action.

Tip: If your smartphone is still slowing down after cleaning, check the background. Many of the apps in Xiaomi continue to work in hidden mode. To turn them off, go to Settings → Applications → App Management → Autostart and forbid autoboot for unnecessary programs.

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Do not clear the cache of system applications (e.g. com.android.systemui) – this can cause interface failures.

2. Memory optimization: what to do if storage is clogged

Even after cleaning up the garbage, the memory can remain full, due to hidden files, messenger cache (especially Telegram and WhatsApp) and backups.

• 📸 Photos and videos: Move media files to the cloud (Google Photos, Mi Cloud) or to your PC. Use the Free up space function in Google Photos if sync is enabled.
• 🎵 Music and podcasts: delete downloaded tracks in Spotify, Yandex Music or YouTube Music. cache of these applications can weigh gigabytes.
• 📱 Applications: Remove games and programs that you do not use. Check the Settings section → Annexes → Size – you can see which apps take up the most space.
• 🔄 Backup copies: update files MIUI (MIUI_Download) Titanium Backup or Swift Backup can weigh up to three times 5–10 GB.

For deep memory analysis, use third-party utilities:

Warning: Do not use "cleaners" with aggressive algorithms (such as Clean Master or DU Speed Booster) that often delete important system files and show false virus warnings to sell a premium version.

3.Cache cleaning: when and how to do it correctly

Cache speeds up applications, but over time it accumulates and takes up gigabytes of memory, and you need to clean it selectively, not everyone.

1. Go to Settings → Applications → Application Management.
2. Select an app (such as Instagram or VK).
3. Press Warehouse. → Clear the cache.
4. For deep cleaning, click Clear Data, but note: this will reset the application settings (you will log out of your account, lose saved data).

Which apps to clean first:

• 📷 Instagram, TikTok, YouTube – cache can reach 1-2 GB.
• 💬 Telegram, WhatsApp – save media files and stickers.
• 🎮 Games (PUBG Mobile, Genshin Impact – Texture and Update Cache.

Remember the usernames and passwords from the applications|Check if there are any important files in the Download folder|Make a backup copy of chats in messengers|Do not clear the cache of system applications-->

⚠️ Note: Do not clear the cache of com.android.systemui, com.miui.home or com.google.android.gms. This can cause shell malfunctions. MIUI or Google services.

4. Removal of viruses and malware

Xiaomi smartphones rarely get infected with viruses, but there is a risk, especially if you install apps from unknown sources (APK-Signs of infection:

• 🔋 Quick battery discharge.
• 📱 Spontaneous application installations.
• 🌐 Advertising in the browser or on the desktop.
• 📈 Unexplained Mobile Internet Traffic.

To check and remove viruses:

1. Use the built-in scanner in the Cleanup app (Security section).
2. Install antivirus: Malwarebytes, Bitdefender or Kaspersky Mobile.
3. Check the list of installed applications in Settings → Apps. Uninstall suspicious programs (for example, with names like com.system.update or flash.player).

If the antivirus doesn’t work, try Safe Mode:

1. Press the power button before the turn off menu appears.
2. Press and hold the option to Turn off - a suggestion will appear to go to safe mode.
3. This mode only runs system applications, and if the problem is gone, it's one of the apps you installed that's to blame.

5. Physical cleaning: speakers, connectors and body

Dust and dirt not only spoil the appearance, but can also disable speakers, microphone or USB-C connector. Clean the smartphone carefully so as not to damage the internal components.

What you need:

• 🧴 Alcohol wipes (70-80% isopropyl alcohol).
• 🪥 Toothpick or plastic spatula.
• 💨 Compressed air cylinder (for speakers).
• 🧤 Microfiber cloth.

Step-by-step:

1. Turn off your smartphone and remove it. SIM-card (if the module is removable).
2. Speakers and microphone: Tilt the phone at a 45° angle and gently blow the holes with a spray of compressed air (keep at a distance of 5-10 cm). Do not use a toothpick - you can damage the membrane.
3. USB-C/3.5mm connector: Light the connector with a flashlight - if dust is visible, carefully remove it with a toothpick (not a metal object!).

Screen and body

• Wipe with a microfiber cloth soaked in an alcohol solution (do not pour alcohol directly on the screen!).
• To remove greasy spots, use special wipes for technique.

⚠️ Warning: Do not use regular water or household detergents, which can damage the oleophobic coating of the screen. Also avoid cotton swabs - the villi may remain inside the connectors.

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Physical cleaning of connectors and speakers is recommended to be carried out every 3-6 months, even if the dirt is not visible.

6.Reset to factory settings: a last resort

If all the cleaning methods didn't work, and the smartphone is still slowing down, you'll have to have a hard reset to the factory settings, and that will delete all the data, so back up first.

• 📱 Local Copy: Settings → The phone. → Backup.
• ☁️ Cloud: sync your contacts, photos and notes with your Mi Account or Google.

How to perform the reset:

1. Go to Settings → About the phone → Reset settings.
2. Choose to erase all data.
3. Confirm the action (a password may be required).
4. After the reboot, follow the instructions of the setup wizard.

If the smartphone does not turn on or hovers on the MI logo, reset via Recovery:

1. Turn off the phone.
2. Press Power + Volume up before the Mi Recovery logo appears.
3. Select Wipe Data → Wipe All Data (control – volume buttons, confirmation – power button).
4. After reset, select Reboot.

⚠️ Note: on some models (Xiaomi) 12T, Redmi Note 11 Pro+) After the reset, you may need to re-assign your Mi Account. Make sure you remember your login and password!

7.Prevention: How to avoid re-contamination

To keep your smartphone clean and fast for longer, follow the following simple rules:

• 📵 Remove unnecessary apps immediately after use (especially “disposable” utilities).
• 🔄 Clean the cache of messengers and social networks once every 1-2 weeks.
• ☁️ Use cloud storage for photos and videos (set up automatic download in Google Photos).
• 🛡️ Don't install it. APK unverified.
• 🔋 Watch the temperature: overheating accelerates battery wear and can cause malfunctions.

We also recommend:

• 📦 Disable auto-update applications via mobile Internet (Play Market) → Settings → Auto-update).
• 📡 Regularly check the use of mobile traffic (Settings) → SIM-maps and mobile networks → Traffic).
• 🔒 Install an ad blocker (such as Blokada or AdGuard) to avoid hidden garbage loading.

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Regularly cleaning the cache and removing unnecessary files prolongs the battery life and reduces the processor’s heat.

FAQ: Frequent questions about Xiaomi cleaning