Have you noticed that your smartphone has started to slow down, applications crash, and the system displays a warning “Memory is full"? This is a signal that your Androiddevice has run out of free space. The reasons can be different: from accumulated garbage to hidden files that take up gigabytes without the user noticing. In this article, we will look at how effectively clear memory without the risk of losing important data - from manual cleaning to automated tools.

Modern smartphones on Android (whether Samsung Galaxy, Xiaomi Redmi or Google Pixel) often suffer from lack of memory, even if technically there should be enough of it. This is due to the peculiarities of the operating system, the application cache, duplicate files and “digital garbage” that remains after apps are uninstalled. We won’t advise “just deleting unnecessary photos” - instead, we’ll show you how to find and eliminate hidden sources of memory overload that take up up to 30% of space without your knowledge.

Why does the memory on Android fill up on its own?

Many users are surprised: “I didn’t download anything, but the memory ran out!” In fact Android actively uses internal storage for temporary files, even if you do not install new applications. Here are the main memory “eaters”:

  • 📱 Application cache: temporary files that are created to speed up the operation of apps (for example, Instagram, YouTube or Google Maps). Over time, the cache grows to several gigabytes.
  • 🗑️ Residual files: after deleting applications, their settings, databases and garbage often remain in folders /data/data or /Android/obb.
  • 📁 Duplicates and screenshots: the system automatically saves screenshots in Pictures/Screenshots, and messengers (WhatsApp, Telegram) duplicate media files.
  • 🔄 System updates: firmware and update files can weigh up to 1–2 GB and are not always deleted after installations.

Another common problem is "other" storage memory settings. This is encrypted data that Android cannot be classified. Often hidden there:

  • 📂 System logs and error dumps (especially after crashes).
  • 🎮 Game saves (for example, Genshin Impact or Call of Duty Mobile can weigh up to 5–10 GB).
  • 📥 Incomplete files from Google Play or browser.
⚠️ Attention: If after cleaning the memory fills up again within a few days, check the device for viruses. Some malware creates hidden folders with advertising files or mines cryptocurrency, filling up the storage.

How to check what exactly is taking up memory

Before cleaning, you need to understand what files or applications are the main culprits. To do this:

  1. Open Settings → Storage (on some devices - Memory or Device).
  2. Wait for system analysis (may take 1-2 minutes).
  3. Examine the chart: the categories “Applications”, “Media”, “Files”, “Cache”, “System” are usually displayed there.

On Samsung and Xiaomi there are additional tools:

  • 🔍 On Samsung: Settings → Device care → Memory → Details (shows the top 5 “gluttonous” applications).
  • 🔍 On Xiaomi/Redmi/POCO: Settings → About phone → Memory → Memory analysis.

For a more in-depth analysis, use third-party utilities:

  • 🛠️ Files by Google (free, from Google LLC) - shows duplicates, large files and unnecessary APKs.
  • 🛠️ SD Maid (paid version reveals full potential) - cleans residual files and databases.
  • 🛠️ DiskUsage (displays memory as an interactive map).
Tool What analyzes Features
Files by Google Duplicates, cache, large files Simple interface, integration with Google Drive
SD Maid Residual files, empty folders, databases Requires root access for full cleaning
DiskUsage Visualization of occupied space Shows hidden system files
Built-in analysis Android General overview of file categories Does not show hidden folders without root
⚠️ Attention: If more than 10–15 GB are occupied in the “System” section, this is normal for modern versions Android (starting from Android 10). Do not try to clear these files manually - you risk damaging the OS.
📊 How often do you clear the memory on your smartphone?
Once a week
Once a month
Only when space runs out
Never cleared

Method 1: Clearing the application cache

Caches are temporary files that are created to speed up apps. Over time, they accumulate and can take up up to 5–10 GB (for example, Facebook or TikTok easily accumulate 1–2 GB of cache). You can clear it in two ways:

Option A: Clearing the cache for individual applications

  1. Go to Settings → Applications.
  2. Select application (for example Google Chrome or Instagram).
  3. Click Storage → Clear cache.

Option B: Mass clear cache

  1. Open Settings → Storage → Cached data.
  2. Confirm clearing (on some devices you will need to enter a password).

❗ Important: Clearing the cache does not delete your data (logins, saves, settings). The next time you launch the application, it will simply download the necessary files again, but without it. "garbage".

Close all applications

Connect to Wi-Fi (the cache will be downloaded again)

Check free space (must be at least 500 MB)

Reboot the device after cleaning-->

Method 2: Removing unnecessary files and duplicates

Photos, videos and documents are often duplicated or saved in multiple copies. For example, WhatsApp by default, saves all media files to the gallery, even if you do not have them. downloaded. Here's how to find and remove unnecessary ones:

Step 1: Search for large files

Use Files by Google:

  1. Open the application and go to the tab Cleaning.
  2. Select the section "Large files" - there Videos, APKs and other bulk data will be displayed.
  3. Mark unnecessary files and click “Clean”.

Step 2: Removing duplicates

In the same Files by Google:

  1. Go to “Duplicates».
  2. The application will automatically find duplicate photos, screenshots and documents.
  3. Choose which copies to keep and which to delete.

Step 3: Cleaning downloads

Folder Download is a real “cemetery” of unnecessary files. This includes:

  • 📄 PDF and DOCX downloaded years earlier.
  • 📦 APK files of installed (and long-deleted) applications.
  • 🎵 Music and videos that you listened to/watched once.

Open any file manager (for example Total Commander or built-in Files) and manually check the folder /Storage/Download.

💡

If you are afraid to delete something important, move the files from the folder Download to your computer or to the cloud (Google Drive, Yandex Disk). After a month, check if you need them and clear the storage.

Method 3: Transferring data to a memory card or cloud

If the internal memory is sorely lacking and you don’t want to delete anything - transfer files to external media. This is relevant for devices that support microSD (for example, Samsung Galaxy A or Xiaomi Redmi Note).

How to transfer files to a memory card

  1. Insert microSD to slot (if any).
  2. Open the file manager and select files (photos, videos, music).
  3. Click “Move" and select the memory card as a target.

⚠️ Limitations:

  • Not all applications can be transferred to SD card (especially system ones).
  • Some devices (Google Pixel, OnePlus) do not have a slot for cards.
  • The speed of work with microSD lower than with internal memory.

Cloud storage: pros and cons

An alternative is to upload files to the cloud:

  • ☁️ Google Photos: automatically backs up photos and videos (you can enable compression to save space).
  • ☁️ Yandex Disk or Mail.ru Cloud: give 10-100 GB free upon registration.
  • ☁️ Dropbox: convenient for documents, but free gives only 2 GB.

🔹 How to set up automatic upload to Google Photos:

  1. Open the application Google Photos.
  2. Go to Settings → Backup and synchronization.
  3. Enable the option and select quality (“High” - unlimited storage, "Original" - considered in the quota Google Drive).
⚠️ Attention: After uploading files to the cloud do not delete them from deviceuntil you are sure that they have been successfully synchronized. Check the availability of the files through the web version of the service or another device.

Method 4: Removing unused applications and their data

The average user installs dozens of applications, but actively uses only 5–10. The rest take up space not only with the APK files themselves, but also with their data (cache, settings, databases).

How to find and remove unnecessary applications

  1. Go to Settings → Applications.
  2. Sort the list by size (click by three dots in the upper corner → “Sort by size»).
  3. Delete apps that you have not used for more than a month.

🔹 Top 5 “invisible” applications that take up a lot of space:

  • 🎮 Games (PUBG Mobile, Call of Duty —up to 2–4 GB each).
  • 📺 Streaming services (Netflix, KinoPoisk caching videos).
  • 🗺️ Maps (Google Maps, Yandex.Maps storing offline maps). gigabytes of media).
  • 📱 Launchers and themes (for example, Nova Launcher or MIUI Themes).
  • 📊 Social networks (Facebook, VK accumulate gigabytes of media).

How to delete application data (not just the cache)

If you need an application, but it takes up too much space:

  1. Open the application information in the settings.
  2. Click Storage → Clear data.
  3. ⚠️ Warning: This will delete all settings, logins and saves (for example, in games you will have to start over again!).
What to do if you cannot delete the application?

Some system applications (for example Google Play Music or Samsung Knox) cannot be removed without root access. In this case, you can:

1. Disable them in the settings (the “Disable” button instead “Delete”)

2. Delete updates (return to the factory version) if they take up a lot of space.

3. Use ADB for uninstallation (requires connection to a PC).

Method 5: Reset to factory settings (last chance)

If none of the methods helped, and the memory is still full - remain Full reset (hard reset). This is a radical method that will return the device to a “clean” state, but Deletes all data, including photos, contacts and installed applications. Use it only as a last resort!

How to reset correctly

  1. Create a backup:
    • Synchronize contacts with Google Account.
    • Copy photos and videos to your PC or to the cloud.
    • Save the list of installed applications (you can via Google Play → "My applications").
  • Go to Settings → System → Reset settings.
  • Select "Delete all data (reset to factory settings)».
  • Confirm the action (you may need to enter a pattern or PIN code).

    • ⏳ How long does the reset take?

    • On modern smartphones - 5-15 minutes.
    • On older devices (for example, Android 7–8) - up to 30 minutes.
    ⚠️ Attention: After the reset, the device will reboot and you will have to configure it again Androidas after purchase. If you have forgotten the data from Google Accountlinked to your phone, you may lose access to the device due to FRP locks (theft protection).

    Method 6: Using root access for deep cleaning (for advanced)

    If you are willing to take the risk, root access will open up opportunities for deep cleaning of the system. With it you can:

    • 🧹 Remove system applications (bloatware).
    • 🗃️ Clean folders /data/dalvik-cache i /cache.
    • 🔧 Optimize work Android using Magisk or Xposed.

    🔹 How to get root access:

    1. Unlock Bootloader (instructions differ for each brand).
    2. Install TWRP Recovery (custom recovery).
    3. Flash Magisk to manage root access.

    ⚠️ Risks:

    • Loss of warranty (manufacturers consider root hacking).
    • Possibility of “bricking” the device (turning it into a “brick”)
    • Security problems (some banking applications refuse to work).

    🛠️ Popular tools for root cleaning:

    • SD Maid (with a module for root).
    • Root Explorer (for manual deletion of files).
    • Greenify (freezes unnecessary processes).
    ⚠️ Attention: Before getting root, make a full backup via TWRP or Titanium BackupAn error occurred when editing system files. lead to data loss or device failure.
    💡

    root access give full control over the system, but require experience. If you are a beginner, it is better to use standard cleaning methods.

    Method 7: Optimizing memory to prevent reoccurrence. filling

    Cleaning memory is good, but even better set up the device so that it does not clog again. Here are some tips:

    1. Set up automatic cleaning.

    O Files by Google:

    1. Open the application settings.
    2. Enable "Auto-cleaning" - the app will delete unnecessary files once a week.

    2. Limit the cache for individual applications

    Some apps allow you to limit the cache size:

    • In Google Chrome: Settings → Privacy → Clear data → Configure.
    • In Spotify: Settings → Storage → Cache size.

    3. Use “light” versions of applications

    Many popular services have lightweight versions:

    • Facebook Lite instead of Facebook.
    • Messenger Lite instead of Messenger.
    • Twitter Lite (web version via PWA).

    4. Disable automatic media downloads in messengers

    In WhatsApp:

    1. Go to Settings → Storage and data.
    2. Disable "Autoload media" for mobile data and Wi-Fi.

    In Telegram:

    1. Open Settings → Data and memory.
    2. Set the cache limit or disable auto download.
    💡

    Check the folder regularly DCIM/.thumbnails —thumbnails of photos and videos are stored there, which can take up to 1 GB. They can be safely deleted (they will be restored automatically).

    FAQ: Frequently asked questions about clearing memory on Android

    Is it possible to clear memory without losing data?

    Yes, if you use the methods from Methods 1–4 (clearing the cache, deleting unnecessary files, transferring data). Resetting to factory settings (Method 5) deletes everything, so it should only be used if other methods have not helped.

    Why does the memory quickly fill up again after cleaning?

    Probable reasons:

    • 📱 Applications actively cache data (for example, TikTok or Instagram).
    • 📁 The system creates error dumps or logs (especially on devices with custom firmware).
    • 🔄 Automatic updates of applications and the system.

    Solution: set up automatic cleaning (see Method 7) and regularly check the storage.

    How to clear the memory if the phone does not turn on?

    If the device does not respond:

    1. Connect it to the PC and try to access the files via MTP (if the phone is defined as a storage device).
    2. Use recovery mode (Recovery Mode): press Power + Volume Up when turning on, then select Wipe Cache Partition.
    3. For complete reset to Recovery select Wipe Data/Factory Reset (deletes all data!).
    Is it safe to use memory cleaning apps (for example, Clean Master)?

    Most "cleaners" (like Clean Master, CCleaner) not only delete the cache, but also:

    • 🚫 Slow down the device (work in the background).
    • 📊 Collect user data.
    • 🔄 They can delete necessary files by mistake.

    Recommendation: use built-in tools Android or Files by Google —they are safer.

    How to clear memory on Android if you can’t access the settings (forgot your password)?

    If you forgot your pattern key or PIN:

    1. Try unlock via Google Account (after 5 unsuccessful attempts the “Forgot your password?” button will appear).
    2. Use Find My Device from Google (https://www.google.com/android/find) for a remote reset.
    3. If all else fails, reset the device via Recovery Mode (see previous question).

    ⚠️ After the reset, all data will be deleted!