How to Clean Xiaomi Redmi Note 8: From Screen to System

Your Xiaomi Redmi Note 8 has become slower to run, overheating or dusty?The reason may be due to both the body pollution and the clogged system.This smartphone, released in 2019, still remains popular due to its balanced specs, but requires regular maintenance. Unlike the new models with IP53 protection, the Redmi Note 8 has only partial spray protection, so cleaning should be especially careful.

In this article, we'll look at all kinds of cleaning, from removing dust from speakers to deep memory optimization, how to safely clean connectors without damaging contacts, what tools to use for the screen, and how to make room in the system without losing important data, and also why you can't use alcohol to clean the Redmi Note 8 camera and what it threatens the matrix.

1. External cleaning: body, screen and connectors

Start by visually inspecting your smartphone, and dust, greasy spots, and small debris accumulate in the most unexpected places: under the volume buttons, in the speakers, and even in the connector. SIM-For the Redmi Note 8, it is especially important to clean the USB-Type C port - its contamination can lead to charging problems.

Use the following tools:

• 🧴 Microfibre wipe (without pile) - for the screen and body.
• 🪄 Silicone brush or toothpick with soft tip - for speakers and connectors.
• 💧 Special wipes for electronics (with the content of isopropyl alcohol not more than 70%) - for disinfection.
• 🔦 Lighting to illuminate hard-to-reach places.

How to Clean Your Speakers and Microphone:

1. Turn off your smartphone.
2. Carefully swipe the silicone brush over the speaker grille (don't press!).
3. To remove sticky dirt, use a plastic spatula (not metal!).
4. Blow the connector with compressed air (balloon) at a distance of 10 cm.

⚠️ Note: Do not use cotton swabs to clean the USB-Type C connector - villi can stay inside and damage the contacts. Also avoid liquids: getting moisture into the connector can cause corrosion.

Screen cleaning: remove prints and protective film

Redmi Note 8 is covered with Gorilla Glass 5, which is scratch-resistant but collects fingerprints. Never use household chemicals (like window washing) to clean it, because it destroys the oleophobic coating.

• 🧼 Distilled water + microfibre (for mild contaminants).
• 🧴 Special screen spray (e.g. Xiaomi Screen Cleaner).
• 🚫 Prohibited: paper napkins, alcohol >70%, acetone, wet hand wipes.

If there is an old protective film with bubbles on the screen:

1. Put a plastic card on the film (not a nail!).
2. Slowly pull the film at a 45° angle, pressing it back to the screen (this reduces the risk of glue residue).
3. Remove the glue residues with isopropyl alcohol (70%) on the cotton disc.

For new protective glasses (if you decide to glue):

• 🔍 Before the sticker, wipe the screen with a degreasing composition (comes complete with glass).
• 📏 Line the glass over the speaker and front camera - these are the most noticeable landmarks.
• 💨 Remove the bubbles with a plastic scraper from the center to the edges.

3.Camera Cleaning: How Not to Damage the Lens

The Redmi Note 8 (48 MP + 8 MP + 2 MP + 2 MP) is particularly vulnerable to contamination. Dust on the lens leads to blurred photos, and greasy spots lead to glare.

• 📸 Use a dry microfiber wipe for external glass.
• 🚫 Never blow on the lens – saliva contains enzymes that can damage the lens coating.
• 💦 For persistent contaminants, moisten the napkin with distilled water (do not drip directly onto the camera!).

If the dust gets inside the camera module (as seen in the photo as dark spots), self-cleaning is impossible - it requires disassembly in the service center.

• 🔋 Damage to battery plume (it is glued!).
• 📡 Breaking of antenna contacts (deterioration of network signal).
• 🔧 Loss of warranty (if it is still valid).

⚠️ Attention: The Redmi Note 8 has a back cover that's latched and glue-based, and if you're not careful, you can break the speaker or the vibrator mounts, and if you're not sure, call the service.

4.Memory optimization: remove garbage from the system

Even after external cleaning, the smartphone can slow down due to clogged memory. Redmi Note 8 was released with 3/4/6 GB of RAM and 32/64/128 GB of ROM. If you have a version of 32 GB, free space is critically small - the system uses up to 10 GB for firmware and MIUI applications.

How to make room:

• 🗑️ Remove the app cache: go to Settings → Annexes → Select the application → Warehouse → Clear the cache.
• 📂 Transfer files to the memory card (if supported): Settings → Warehouse → Data portability.
• 🎬 Remove duplicate photos/video with Google Photos or Gallery Go.
• 🔄 Use the built-in Cleanup Utility (Security) → Cleanup).

For deep cleaning, use the developer mode:

1. Activate it: Settings → About Phone → MIUI version (click 7 times).
2. Back to Settings → Additionally. → For developers.
3. Enable Do Not Save Actions (reduces log files).
4. Limit the background processes to 2-3.

Delete the cache manually |Transfer the photo to the map/cloud |Delete unused APK|Check the Downloads folder |Start the built-in clean-up-->

5. Cleaning software debris: cache, Dalvik and ART

Over time, temporary files accumulate in the MIUI system that are not deleted by standard methods, including:

• Dalvik cache – remnants from application optimization.
• ART-cache - files of the Android virtual machine.
• System log files (/data/log)

Removing them will require a reboot to Recovery:

1. Turn off the phone.
2. Press Power + Volume up until the Mi logo appears.
3. Select Wipe & Reset → Wipe Cache (use volume buttons for navigation).
4. Confirm the action and restart.

⚠️ Warning: Don't confuse Wipe Cache with Wipe Data! The second option will erase all your data, including photos and apps. On the Redmi Note 8, resetting to factory settings via Recovery also deletes your Mi Account, which can block the phone.

After cleaning the cache:

• 🔄 The first download will take up to 5 minutes – this is normal.
• 📱 Applications will be optimized again (the processor can warm up).
• 🔋 Battery charge will temporarily drop by 5-10% due to file re-indexing.

💡

If your phone is slower after cleaning the cache, wait until the application optimization is complete (usually 10-15 minutes).

6.Deep optimization: disabling unnecessary processes

MIUI on the Redmi Note 8 is known for its abundance of background processes that eat up RAM and battery.

• 🔄 Auto-Update Apps: Play Market → Settings → Auto-update → Never.
• 📡 Background data transmission: Settings → Mobile network → Transfer of data → Background gear → Limit.
• 🔍 Search for Xiaomi devices: Settings → Bluetooth → Searching for devices → Shut down.
• 🎵 Musical effects: Settings → Sound. → Sound effects → Shut down.

For advanced users:

adb shell pm disable-user --user 0 com.miui.analytics


adb shell pm disable-user --user 0 com.xiaomi.midrop

These commands disable analytics collection and Mi Drop (file transfer) service, which work in the background.

It is also recommended that:

• 🔋 Calibrate the battery: discharge the phone to 0%, then charge to 100% without interruptions.
• 📵 Switch to switch to 2G in areas with poor signaling (saving charge).
• 🌙 Include a dark theme (Settings) → Screen. → Dark theme – reduces the load on the screen.

💡

Turning off background processes increases the Redmi Note 8’s life by 15-20%, but can delay notifications from messengers. Set up exceptions for important applications in Settings → Battery → Battery Optimization.

7.When cleaning doesn't help: signs of hardware problems

If after all the manipulations Redmi Note 8 continues to brake, overheat or discharge quickly, the problem may be hardware.

For diagnosis, use the engineering menu:

1. Dial in the dialer: ##4636##.
2. Select Battery Information – Check the wear level (Battery Health).
3. In the Battery Use section, see which processes consume the most energy.

⚠️ Note: If the processor temperature in the engineering menu exceeds 60°C in plain, it's a sign of a thermally conductive paste that needs to be replaced. On the Redmi Note 8, this problem often occurs after 2-3 years of use.

FAQ: Frequent questions about cleaning Xiaomi Redmi Note 8