How to Clear System Storage & Other Data on Android (Samsung, Pixel, Xiaomi)

Bottom Line: ‘System Storage’ (or ‘Other’ storage) on Android devices running Samsung One UI, Google Pixel Stock Android, or Xiaomi MIUI/HyperOS consists of application cache files, messaging media databases (WhatsApp, Telegram), offline YouTube/Spotify downloads, and hidden image thumbnail databases (.thumbnails). You can safely reclaim 10 GB to 50 GB+ of storage without performing a factory reset or losing personal photos.

What is ‘System Storage’ & ‘Other’ Data on Android?

When you navigate to Settings > Storage or Device Care on your Android smartphone, the operating system displays a breakdown of occupied disk space. Smartphone owners with 64GB, 128GB, or 256GB internal storage are frequently frustrated to find that System or Other consumes over 30 GB of internal storage.

+-------------------------------------------------------------------------+
| [Images: 15GB] [Apps: 35GB] [System / Other: 40GB] [Free: 3GB]          |
+-------------------------------------------------------------------------+
                                        ^
                              Hidden Android Storage Bloat!

Why Does Android System Storage Expand?

Android apps write temporary files to internal storage to speed up image rendering and reduce mobile network data usage. Over time, several specific areas accumulate bloat:

1. App Caches vs App Data: Apps like TikTok, Instagram, and Chrome cache video thumbnails, web fonts, and user logs.
2. WhatsApp & Telegram Databases: WhatsApp backs up database message files (msgstore.db.crypt14) daily in Android/media/com.whatsapp.
3. Hidden Gallery Thumbnails (.thumbnails): The Android MediaStore service generates high-resolution preview images for every photo and video in your gallery.
4. Offline Streaming Media: Downloaded offline videos on YouTube, Netflix, Spotify, and Amazon Prime Video.
5. OTA Android System Update Packages: Staged software update installer files.

Step-by-Step Guide to Clear Android System Storage

Follow these 5 non-destructive steps to free up storage on your Android device:

Step 1: Clear Application Caches (GUI Method)

1. Open Settings > Apps.
2. Sort apps by Size.
3. Tap heavy apps (Chrome, TikTok, Instagram, YouTube, Spotify).
4. Tap Storage.
5. Tap Clear Cache (Do NOT tap Clear Data unless you want to log out of the app).

Step 2: Delete Old WhatsApp Database Backups

WhatsApp retains 7 daily local chat backup files, each weighing several hundred megabytes:

1. Open your phone’s Files or My Files app.
2. Navigate to: Internal Storage > Android > media > com.whatsapp > WhatsApp > Databases.
3. Keep the most recent file (msgstore.db.crypt14) and delete older files (msgstore-YYYY-MM-DD.1.db.crypt14).

Step 3: Delete Hidden .thumbnails Folder

1. Open My Files > tap Settings (three dots) > enable Show hidden system files.
2. Navigate to: Internal Storage > DCIM > .thumbnails.
3. Delete the .thumbnails directory. (Reclaims 2 GB to 10 GB instantly).

Step 4: Use Google Files “Clean” Utility

1. Download or open Files by Google.
2. Tap the Clean tab at the bottom.
3. Review recommendations: Junk Files, Delete Duplicate Files, and Delete Unused Apps.

Step 5: Advanced ADB Command Cleanup (For Power Users)

Connect your phone to a computer via USB with USB Debugging enabled:

# Clear PM package manager cached APKs
adb shell pm trim-caches 999G

# Delete logcat logging buffers
adb shell logcat -c

Android Storage Safety Matrix

Frequently Asked Questions (FAQ)

Will clearing cache delete my photos or WhatsApp chats?

No. Tap Clear Cache only touches temporary files. Your photos, contacts, text messages, and WhatsApp chats remain completely safe.

What is the difference between Clear Cache and Clear Data on Android?

• Clear Cache: Deletes temporary files (thumbnails, web assets). Safe, keeps you logged in.
• Clear Data: Resets the app to factory settings, deleting saved databases and logging you out.

Related Guides

• Learn about iPhone System Data Cleanup.
• How to clear macOS System Data Storage.