How to clean Xiaomi Redmi 8: from cache to connectors

Xiaomi Redmi 8 is one of the most popular budget smartphones, but over time even it begins to “brake” due to accumulated garbage. Performance problems, fast battery discharge and overheating are often not related to “iron”, but to clogged memory, background activity of applications or physical pollution. In this article, we will analyze how to comprehensively clean your Redmi 8: from removing digital debris to carefully cleaning the case and connectors.

It is important to understand that Redmi 8 (codenamed olive) runs on a Snapdragon 439 processor with 3/4 GB of RAM – there are not so many resources, so even 5-10 “extra” gigabytes of busy data can significantly slow down the system. We will not advise radical measures like factory reset (this is an extreme case), but focus on safe and effective methods that will return the phone performance.

This article is also suitable for the Redmi 8A/8A Dual, as it is built on the same platform. If you have a different model (like the Redmi Note 8), some of the tips also apply, but there may be different menu paths or technical nuances.

1. Memory cleanup: delete unnecessary files and cache

The first step is to free up internal memory. On Redmi 8 with 32 or 64 GB of storage, there is often less than 10% left, which is critical for Android to work.

1. Memory Analysis: Go to Settings → Memory. The system will show you what exactly takes up space (photos, videos, apps, "Other"). Pay attention to the System Data section - if it weighs more than 5-7 GB, this is a signal of cache debris.
2. Cache cleanup: In the same memory menu, tap on Clear cache. This will delete temporary application files without harming data.
3. Remove duplicates: Use the Google Files app (available on Play Market) and it will find repetitive photos, screenshots and unnecessary ones. APK-file.

Pay special attention to the Download folder, which often accumulates forgotten documents, archives and installation files. DCIM/.thumbnails: It contains miniatures of photos that can be safely deleted (they will be restored automatically).

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If the phone says "Not enough memory" but there's space available, try restarting the device. Sometimes Android doesn't display the space properly because of file system errors.

For deep cleaning, use third-party utilities, but only proven:

• 🧹 SD Maid – deletes residual files after uninstalling applications.
• 🗑️ Files by Google – Finds large and rarely used files.
• 🔍 CCleaner – Clears the cache and history, but be careful with Registry (on Android it is not!) and Autoboot sections.

⚠️ Please do not use “optimizers” like Clean Master or DU Speed Booster.They often show false threats, consume resources in the background and can delete important system files. Xiaomi has already integrated all the necessary tools into Security (shield icon).

2. Application optimization: what can be removed without harm

Redmi 8 has a lot of Xiaomi and Google apps that aren’t always needed, some of which can be removed or disabled.

To remove system applications without root rights, use the ADB command:

adb shell pm uninstall -k --user 0 com.mi.android.globalFileexplorer

Replace com.mi.android.globalFileexplorer with the application package you want (you can find it through the App Inspector in the Play Market).

Also check the background activity:

1. Go to Settings → Battery → Battery Use.
2. Slip on three dots in the top right corner and select Optimization.
3. Turn off auto-run for unnecessary apps (like Facebook or AliExpress).

3. Cleaning connectors and housing: how not to damage the phone

Physical cleaning of Redmi 8 requires care, and dust and dirt accumulate in the Micro-USB connector, speakers, microphone and under the buttons.

• 🧲 Charging connector: Take a wooden toothpick (not metal!) and carefully remove the dust. Use isopropyl alcohol 90 for deep cleaning%+ Never blow into the connector, it will dull the dust inwards!
• 🔊 Speakers and microphone: use a soft brush (for example, for drawing) or tape, folded sticky side out!
• 📱 Screen and body: wipe with microfiber dipped in distilled water. For greasy stains, a mixture of water and vinegar (1:1). Avoid alcohol on oleophobic coatings!

⚠️ Warning: If after cleaning the charging connector the phone stopped detecting the cable, check the contacts for bending. Redmi 8 is known for the problem of "falling off» USB-In this case, only the service center will help.

To clean the internal components (if the phone is disassembled):

• Use antistatic tweezers and medical alcohol.
• Don’t touch chips and plumes – only the board around them.
• After cleaning, let the phone dry for 12+ hours.

4.Cache reset via Recovery: when it's needed

If the phone is slowing down, overheating or is giving up update errors, resetting the cache via Recovery Mode will help, not delete your data, but clear the temporary files of the system.

Instructions:

1. Turn off Redmi 8.
2. Press Volume Up + Power before the Mi logo appears.
3. Release the buttons and you will be taken to the Recovery menu.
4. Select Wipe & Reset → Wipe Cache (Manage volume buttons, confirmation – power button).
5. Once completed, restart the phone (Reboot).

This procedure is useful if:

• 🐢 The phone hangs on the Redmi logo.
• 🔄 No updates are installed (Error 7 or Installation Error).
• 📱 Applications are closed spontaneously.

⚠️ Warning: Don't confuse Wipe Cache with Wipe Data! The second option will erase all your data (photos, contacts, messages). If you accidentally choose Wipe Data, turn off your phone immediately - sometimes this helps interrupt the process.

Backup of important data

Charge your phone at least 50%

Get out. SIM-card and memory card (optional, but recommended)

Remember the password from the Mi Account (required after the reboot)-->

5. Fighting viruses and malware

Redmi 8 based on Android 9/10 is vulnerable to viruses, especially if you install APK from unverified sources.

• 📲 Advertising in the status line or on top of applications.
• 🔋 Fast battery discharge (virus mines cryptocurrency).
• 📡 Suspicious traffic (check in Settings) → SIM-maps and mobile networks → Traffic).

How to clean:

1. Scan: Use Malwarebytes or Dr.Web Light (they don’t load the system, unlike Avast).
2. Manual verification: go to Settings → Applications and sort by installation date. Remove unknown programs.
3. Recoil rights: If the virus requested administrator rights, unseat them in Settings → Passwords and Security → Administrator rights.

To remove advertising viruses (e.g. HiddenAds):

• Go to Settings → Notifications and turn off permissions for suspicious apps.
• In Settings → Applications → Special Access → Overlay windows remove unnecessary permissions.

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If the antivirus does not find threats, but the ads continue to appear, the problem may be the infected virus. APK-In this case, only resetting to factory settings will help.

Battery Optimization: Why Your Phone Is Drying Quickly

Redmi 8 (5000 mAh) battery loses capacity over time, but often the problem lies in software optimization.

• 🔋 Battery consumption: in Settings → So you can see what's the most battery-consuming app, the screen rate is 20 to 30 percent, Android System rate is 15 percent, if Mediaserver or Google Play Services are spending. >10% is a sign of a problem.
• 🌡️ Overheating: If the phone is heated without load, check background processes or the physical condition of the battery (bloating).
• 🔄 Charging cycles: avoid discharge below 20% and charging to 100%. Optimal to keep the level 30-80%.

How to extend the life of the battery:

1. Turn off Auto Brightness and set the value manually (60-70% is enough).
2. Turn on the Dark Theme (Settings → Display).
3. Limit background activity: Settings → Battery → Battery Optimization → Select All Apps.
4. Turn off Wi-Fi and Bluetooth in the background if you are not using it.

⚠️ Warning: If the battery is swelling (the phone body is deformed), you can't keep using the device - it's dangerous! The battery can ignite. Contact the service for replacement (cost for Redmi 8 - about 1500-2500) ₽).

7. Firmware update: is it worth it?

Redmi 8 officially received the latest update to MIUI 12.5 based on Android 10. New versions of MIUI 13/14 for this model will not be released, but you can install custom firmware (for example, LineageOS or Pixel Experience).

Pros of the update:

• ✅ Correcting security vulnerabilities.
• ✅ New features (e.g. Game Turbo for gaming).
• ✅ Optimizing productivity.

Cons:

• ❌ Risk of “bricking” (if the process is interrupted).
• ❌ Possible bugs (e.g., a failed proximity sensor).
• ❌ Loss of warranty (when installing custom firmware).

If you decide to upgrade:

1. Make a backup through Settings → Additional → Backup and Reset.
2. Charge the phone to 100%.
3. Download the firmware only from the official Xiaomi website (link).
4. To install via Recovery, rename the file to update.zip and place it at the root of the memory.

FAQ: Frequent questions about cleaning Redmi 8