Cleaning memory on Android without apps: a complete guide with hidden tricks

Has your smartphone started to slow down, applications crash with the error "Insufficient memory", and photos are no longer saved? The problem is not the age of the device - even new flagships Android started to slow down, applications crash with the error “Insufficient memory”, and photos are no longer saved? The problem is not the age of the device - even new flagships Samsung Galaxy S24 or Google Pixel 8 can become clogged with unnecessary data. At the same time 90% of users mistakenly believethat for cleaning it is necessary to install "cleaners" like CCleaner or SD Maid. In fact Android has built-in toolswhich allow you to free up gigabytes of memory in 10 minutes - without root access and the risk of catching a virus.

In this article you will find 7 proven methods, which work on all versions of the system - from Android 8 Oreo to Android 15. We will look at not only the obvious methods (deleting the cache or old files), but also hidden functions that are silent even in the official Google documentation. For example, how to clear the memory occupied by system updates, or why “Other files” in storage can weigh tens of gigabytes. All instructions are illustrated with screenshots from real devices and adapted for different manufacturers (Xiaomi, Samsung, OnePlus etc.).

1. Storage analysis: where are the “invisible” gigabytes hidden

Before deleting something, you need to understand what exactly is taking up memory. Android has a built-in storage analyzer, but it often shows data incorrectly - especially in the Other Files section. Here's how to get an accurate picture:

Open Settings → Storage (on some devices the path may differ: Settings → Device maintenance → Memory for Samsung or Settings → Advanced → Storage for Xiaomi). The system will automatically scan the memory and show the distribution by category:

• 📷 Photos and videos — usually take up the lion's share (especially if you shoot in 4K or RAW).
• 🎵 Audio - music, podcasts, voice recordings. Attention: duplicate tracks from different applications often appear here.
• 📱 Applications - not only the APK files themselves, but also their data (for example, offline maps in Google Maps or cache TikTok).
• 🗑️ Other files - the most mysterious category. Log files, temporary data, remnants of deleted applications can be hidden here.

Click on any category to see details. For example, in “Applications” you will see a list of apps sorted by space occupied. Key point: pay attention to applications that have not been used for a long time, but take up hundreds of megabytes. Typical examples - Facebook (the cache can weigh up to 1 GB), Telegram (saved media files), Google Play Services (updates and data for Google services).

⚠️ Attention: On devices Huawei and Honor without Google services (from HMS) the "Storage" section may display data incorrectly. In this case, use the file manager Files by Google (available in AppGallery).

2. Clearing the application cache: why it is safe and how to do it correctly

Caches are temporary. files that applications create to speed up work. Over time, they accumulate and can take up up to 5-10 GB (especially in games and social networks). Unlike application data, the cache can be deleted without the risk of losing important information.

Method 1: Clearing the cache for individual applications.

1. Go to Settings → Applications (or Settings → All applications to Xiaomi).
2. Select an application from the list (for example, Instagram or YouTube).
3. Click Storage → Clear cache.

Method 2: Bulk cache clearing (does not work on all devices).

1. Open Settings → Storage → Cache data.
2. Confirm clearing (you may need to enter a password or pattern).

Important: Do not confuse “Clear cache” and “Clear data” will delete all settings and files. applications (for example, saved games in Genshin Impact or chats in WhatsApp).The cache can be cleared even daily - this will not affect the operation of apps in any way, except that the first seconds after cleaning they may take a little longer to load.

Clear cache (temporary files)|Delete downloads (if they are not needed)|Disable autosaving of media in instant messengers|Delete offline data (maps, music, videos)-->

Data type	Is it possible to delete	Consequences	How to clear
Application cache	✅ Yes	The application will take longer to load the next time you launch	Settings → Applications → [Name] → Storage → Clear cache
Application data	❌ No (if settings are important)	Reset to "as after installation"	Settings → Applications → [Name] → Storage → Clear data
Downloads (Download folder)	✅ Yes (if files are not needed)	Loss of access to downloaded files	Through any file manager
Offline maps (Google Maps, Yandex.Maps)	✅ Yes	Maps will be loaded only online	In the settings of the corresponding application

3. unnecessary files: where to look for garbage and how not to delete important ones

Even if you regularly clean the gallery, "invisible" filesaccumulate in your smartphone's memory, which you may not be aware of. Here are the main sources:

• 📁 Download folder -here by default. All files from the browser, instant messengers and email are saved. Often, outdated APK files, PDF documents, archives are stored here.
• 🎥 Screenshots and screen recordings —automatically saved in Pictures/Screenshots or Movies/Screenrecords. data-i="143">screenshots can weigh up to 10 MB each due to high resolution. Samsung screenshots can be up to 10 MB each due to high resolution.
• 📊 Log files and dumps are created by the system in case of failures. You need to look for them in folders /data/log or /sdcard/log (visible only through a file manager with root or ADB rights).
• 🔄 Duplicates files - especially relevant for photos (for example, when one image is saved both in Google Photosand in the gallery).

To search and remove garbage, use the built-in file manager (for example, Files by Google or Mi File Manager on XiaomiHere are step-by-step guide:

1. Open your file manager and go to the "Cleanup" or "Storage Analysis" section.
2. Select file categories to scan (for example, "Large files", "Duplicates", "Old downloads").
3. View the list of found files and mark unnecessary ones. Attention: not delete files with extensions .db, .xml or .conf —these may be system settings.
4. Click "Delete" and confirm the action.

Hidden feature: On devices Samsung have a "Deep Cleaning" function, which finds files that are inaccessible in the standard way. To activate it:

1. Go to Settings → Device Maintenance → Memory.
2. Click on the three dots in the upper right corner and select Deep cleaning.
3. Wait until the scan is completed and delete the suggested files.

4. Freeing up space from system and application updates

Few people know, but Android saves update files even after they are installed. These files can occupy from 500 MB to 2 GB and are located in a hidden folder /cache. You cannot delete them manually, but there are workarounds.

Method 1: Cleaning via Recovery Mode (works on most devices):

1. Turn off your smartphone.
2. Hold down the key combination to enter in Recovery Mode (usually Power + Volume Up, but on Samsung this Power + Volume Up + Bixby).
3. In the recovery menu, select Wipe cache partition (use volume buttons to navigate and power button to confirm).
4. Reboot your device (Reboot system now).

Method 2: Delete update cache via ADB (for advanced users):

If you have access to ADB (Android Debug Bridge), run the command:

adb shell pm trim-caches -1 G

This command will clear the cache of all user applications, including remnants from updates.

Method 3: Disabling automatic application updates (if memory is critically low):

1. Open Google Play Store.
2. Go in Settings → Auto-update applications.
3. Select Do not update automatically or Only via Wi-Fi (if the problem is traffic).

⚠️ Attention: On devices with MIUI (for example, Redmi Note 12) after clearing the update cache, the ability to roll back the system may disappear. If you plan to downgrade the firmware, do not use this method.

5. Storage optimization using cloud services

If there is little space left on the device, but you don’t want to delete files, transfer them to the cloud. Google Photos, Yandex Drive and Dropbox offer free storage, which is enough for most users. The main thing is to set up synchronization correctly.

How to free up space using Google Photos:

1. Install the application Google Photos (if not already installed).
2. Open it and sign in to your Google account.
3. Go to Settings → Backup and sync and enable the function.
4. Select download quality:
   • High quality (free) —unlimited storage, but photos are compressed up to 16 MP, videos up to 1080p.
   • Original quality —files are saved without compression, but take up space in your Google Drive (15 GB free).

After uploading files to the cloud, return to Settings → Free up space and delete local copies.

Alternative cloud services:

• 📁 Yandex Disk — 10 GB free, there is automatic photo uploading. Suitable for users from Russia and the CIS.
• 📁 Dropbox — 2 GB free, but there are bonuses for inviting friends (up to 16 GB).
• 📁 Mega — 20 GB free, all files are encrypted. Ideal for confidential ones. data.

Important nuance: When using cloud services always check the Internet speed. Uploading 10 GB of photos over a mobile network can cost a lot of money. Configure uploading only via Wi-Fi in the synchronization settings.

What to do if the cloud does not synchronize?

If files are not uploaded to Google Photos or another service, check:

1. Internet connection (especially if you use a VPN).

2. Is there enough space in the cloud? storage.

3. Is the power saving mode blocking synchronization (on Xiaomi and Huawei you need to manually add the application to exceptions).

4. Is the application updated to the latest version.

If the problem persists, try log out of your account and log back in.

6. Hidden Android functions to free up memory

Android has several little-known functionsthat help free up memory without deleting files. They are not advertised, but they work on most devices.

Feature 1: Cleaning "Other Files" via Safe Mode

If the "Other Files" section takes up a lot of space (for example, 5-10 GB), but you don't know what it is, try the following method:

1. Restart your device in Safe Mode (hold the button turn off, then press and hold "Turn off power" until the prompt to switch to safe mode appears).
2. In Safe Mode, open Settings → Storage and check the size of the "Other files" section.
3. If it has decreased, the problem is in one of the installed applications. Remove apps one by one and monitor the changes.

Function 2: Resetting the media file cache

Sometimes the system does not index media files correctly, which is why they are duplicated in the gallery or take up extra space. To reset the cache:

1. Go to Settings → Applications.
2. Find the application Media storage (or Media Storage on English firmware).
3. Click Storage → Clear data.
4. Restart the device. The system will rescan the files, which can free up to 1 GB of memory.

Function 3: Disable application preloading

Some manufacturers (for example, Samsung i Xiaomi) preload applications into memory so that they launch faster. This is convenient, but takes up extra resources. To disable:

1. Activate Developer mode (go to). Settings → About phone and click on "Build number" 7 times.
2. Return to Settings → System → For developers.
3. Find the option Do not save actions (or Don't keep activities) and enable it.
4. Also disable Preloading applications (if there is such an item).

7. Prevention: how to avoid filling up memory in the future

To avoid having to regularly clean the memory, set up your smartphone so that manages the storage independently. Here are the key recommendations:

• 🔄 Auto clearing cache: Enable it in the storage settings (on Samsung this is called "Automatic" cleaning").
• 📥 Limiting downloads: In instant messengers (Telegram, WhatsApp), disable autosaving of media files or limit it only for Wi-Fi.
• 🎮 Game control: Games like Genshin Impact or Call of Duty Mobile can weigh up to 10 GB. Regularly clear their cache or delete unused projects.
• 📅 Cleaning Scheduler: Use the task. in Google Assistant or application Tasksto remind yourself to check your storage once a month.

Setting up automatic cleaning using an example MIUI (Xiaomi, Redmi, POCO):

1. Go to Settings → Storage.
2. Click on the gear in the upper right corner and select Auto cleanup.
3. Enable the option and set up a schedule (for example, cleaning once a week).
4. Tick the file types for automatic deletion (cache, temporary files, recycle bin).

For devices Samsung:

1. Open Settings → Device maintenance → Memory.
2. Click Customize (gear icon).
3. Enable Auto-cleaning and choose which files to delete (unused applications, duplicates, cache).

⚠️ Attention: On some firmware (for example, ColorOS from Oppo/Realme), automatic cleaning can delete files from the folder Download, even if you need them. Before activating the feature, check which categories are included in the cleaning.

FAQ: Answers to frequently asked questions

Is it possible to clear memory on Android without losing data?

Yes, if you use safe methods: clearing the cache, deleting unnecessary files (screenshots, downloads), transferring data to the cloud. Not touch folders Android, data and system this can lead to failures.

Why does the memory quickly fill up again after cleaning?

The reasons may be different:

• Auto-update of applications (disable in settings Google Play).
• Synchronization of photos/videos with the cloud (check settings Google Photos or Galleries).
• System log files (especially if the device often overheats or crashes from applications).
• Viruses or malicious applications (scan the device through Google Play Protect).

Use a storage analyzer once a week to monitor "guzzling" applications.

How to clear memory if you have a smartphone slows down and does not respond to commands?

If the device lags a lot, try:

1. Hard reboot: hold down the power button for 10-15 seconds until the device turns off and reboots.
2. Safe Mode: boot into safe mode (as described above) and remove unnecessary applications.
3. Reset via Recovery: if all else fails, reset the cache via Recovery Mode (not to be confused with a full reset!).

If this does not work, connect the smartphone to PC and manually delete large files through ADB or a file manager.

What files can be deleted without risk to the system?

Safely delete:

• Files with extensions: .apk (installation packages), .tmp (temporary), .log (logs).
• Folders: Download (if files are not needed), DCIM/.thumbnails (photo thumbnails).
• Application cache (as described in section 2).

Do not delete:

• Folders Android, data, system.
• Files with extensions .db, .xml, .odex.
• Hidden files (starting with a dot, for example .nomedia).

Does moving applications to an SD card help?

Partially. On modern versions of Android (starting from Android 6.0 Marshmallow), moving applications to an SD card works limited:

• Not all applications support this function.
• SD card must be formatted as internal storage (this will delete all data on it!).
• Application performance may drop if the card is slow (class below UHS-I or Class 10).

It is better to use an SD card for storing media files (photos, videos, music), rather than for applications.