Memory Cleanup on Xiaomi Redmi 6: a step-by-step guide with an efficiency table

Why Clean Memory on Redmi 6 and When It's Critical

Xiaomi Redmi 6, released in 2018, is still a popular budget device — but its internal memory (16/32/64 GB) often becomes a bottleneck. Even in moderate use, the system automatically reserves up to 5-7 GB for MIUI service files, and user data (photos, messengers, games) quickly fill the remaining space. The first signs of memory shortage: brakes when opening applications, bugs installing updates or the message “Not enough space” when shooting a video.

The Redmi 6 feature is the lack of a microSD slot in the base version (16 GB), which makes cleaning memory not a luxury, but a necessity. Even if you have a model with 32/64 GB, the system can get clogged due to:

• 📂 Cache of applications (especially in Facebook, Instagram, TikTok – up to 1-2 GB for every).
• 🎮 Residual files after deleting games (folders) Android/obb and Android/data).
• 📁 Duplicate photo (MIUI creates thumbnails in a folder DCIM/.thumbnails).
• 🔄 System updates that are not automatically deleted (folder) /cache).

In this article, 7 proven ways to make room, from simple (hand-held garbage removal) to radical (factory reset), with a comparison of their effectiveness and risks. All methods tested on Redmi 6 with MIUI 10-12.

Method 1: Built-in utility "Cleaning" - quickly but superficially

The safest method is to use the MIUI Cleaner tool, which deletes temporary files, cache and uninstalled software residues, but does not touch user data. Efficiency: frees 0.5-1.5 GB (depending on the degree of contamination of the system).

How to start:

1. Open the Security app (shield icon).
2. Go to Cleanup (or Accelerate → Deep Cleaning) section.
3. Click Scan and wait for analysis.
4. Check all categories (Cash, Garbage, APK-files) and click Clear.

⚠️ Note: The utility does not remove the cache of system applications (for example, Google Play Services or Google Play Services). MIUI This will require manual cleaning.

Method 2: Manually remove cache for individual applications

If the built-in cleanup didn’t work, check the cache of the most voracious apps, for example, Telegram can accumulate up to 3-5 GB of media files, and YouTube can accumulate up to 1 GB of video cache. Manual cleaning allows you to free 2-4 GB without removing the programs themselves.

Instructions:

1. Go to Settings → Applications → Application Management.
2. Select an app (such as Facebook) and open Warehouse.
3. Click Clear Cache (not to be confused with Clear Data – it will delete accounts and settings!).
4. For messengers (WhatsApp, Viber) further clean folder /sdcard/Annex/Media — It contains downloaded photos and videos.

💡 Useful tip: After cleaning the cache, restart the phone – this will reset the background processes that could block files.

Method 3: Delete unnecessary system files (for advanced ones)

MIUI creates many service files that are not deleted by standard means.

• 📁 folder /sdcard/MIUI/backup — Backups of settings (can be deleted if you do not use backup).
• 📄.log and.tmp files in the root directory - error logs.
• 🎵 folder /sdcard/Music/ringtone — standard ringing melodies (weighing up to) 50 MB).
• 📷 folder /sdcard/DCIM/.thumbnails — Photo miniatures (up to) 200 MB).

For removal:

1. Connect your phone to your PC or use a file explorer (such as Solid Explorer).
2. Enable the display of hidden files (in Solid Explorer: Settings → Show hidden files).
3. Remove folders from the list above. Don't touch system directories like /system or /data!

⚠️ Warning: If after deleting system files, the phone starts to brake, reboot. In rare cases, you may need to reset the cache via Recovery (click Power). + Volume up when switched on).

Method 4: Transfer applications to SD-card (if there is a slot)

Redmi 6 models with 32/64 GB of memory support microSD up to 256 GB (in a separate slot or hybrid – depends on the region), porting applications to a memory card allows you to free up to 50% of internal storage, but does not work with all programs.

How to move:

1. Put it in. SD-Card (formatted as Portable, not Internal!).
2. Go to Settings → Applications → Application Management.
3. Select an app (such as Spotify) and click Storage → Change. → SD-map.
4. Confirm the transfer. It'll take 1-3 minutes.

Limitations:

• ❌ Not all apps support portability (such as WhatsApp or Google Play Services).
• ❌ After the transfer, the application may run slower (depending on the class). SD-map).
• ❌ System updates are not installed on SD-map.

💡

Transfer to SD-The card is only suitable for "light" applications (messengers, music players), games and social networks are better left in internal memory, they require quick access to data.

Method 5: Delete Heavy Files Through Storage Analysis

Often, users are unaware that the phone is loaded with gigabytes of unnecessary data, such as old WhatsApp videos, Google Maps cache, or undeleted torrents. Use a storage analyzer to find these files.

The best applications for analysis:

• 📊 Files by Google – Shows Large Files and Duplicates.
• 🔍 SD Maid – Finds residual files after uninstallation.
• 📈 DiskUsage – visualizes occupied space by folders.

Example of search for junk files in Files by Google:

1. Open the app and go to the Cleanup tab.
2. Select Large Files – the system will show videos, archives and APK weighing >100 MB.
3. Check Download, Bluetooth, and Pictures/Screenshots folders, which often accumulate unnecessary screenshots and documents.

⚠️ Note: Do not delete files with the.odex extension or.vdex extension, which are components of installed applications, and their damage will lead to errors such as "Application stopped».

Method 6: Reset to factory settings (last chance)

If less than 1 GB is free, and previous methods have failed, Hard Reset remains, which deletes all data (photos, contacts, messages), but returns the phone to its "clean" state. Efficiency: frees 80-90% of memory (depending on the degree of contamination).

How to perform the reset:

1. Backup important data (export contacts to VCF, photos to PC or cloud).
2. Go to Settings → About the phone → Reset settings.
3. Choose to erase all data and confirm the action.
4. After the reboot, the phone will be like new – you will need to re-set.

🔹 Alternative method (through recovery):

1. Turn off the phone.
2. Press Power + Volume up until the Mi logo appears.
3. Select Wipe Data → Wipe All Data (control – volume buttons).
4. Confirm the reset and wait until it is completed.

💡

Before reset, write down your phone's IMEI (type *#06#). In rare cases, network settings may need to be restored after Hard Reset.

Method 7: Optimize memory without deleting files

If cleaning didn’t work, try optimizing your memory usage:

• 📵 Turn off autoload media in messengers (WhatsApp: Settings) → Data and storage → Autoboot media).
• 🎬 Reduce the quality of the video in the camera to 720p (Save up to 60% of the space).
• 🔄 Set up a cloud backup (e.g. Google Photos with the option to “Free up space»).
• 🚫 Stop background activity of unnecessary applications (Settings) → Battery → Energy management).

Also check the MIUI Optimization settings:

1. Enable Settings → Special features → MIUI Optimization.
2. Activate the option to clean up memory when you lock.

These measures will not free up gigabytes, but will slow memory upload by 20-30%.

FAQ: Frequent questions about cleaning Redmi memory 6