Memory on Android is full and there is nothing to delete: 12 working ways to free up space

You open the gallery to take a photo, but the phone displays a notification: "Not enough memory". Go to settings - and there is only 500 MB of 64 GB free. At the same time, there is nothing superfluous in the list of applications: no heavy games, no hundreds of photos, no downloaded movies. How so? The fact is that Android reserves memory for system needs, cache and temporary files, which are not always visible to the user. Even if you delete all user data, part of the storage will remain occupied.

In this article we will look at hidden causes of memory overflow and ways to free it when there is “nothing to delete.” We won't advise the obvious (like deleting photos or emptying the trash), but will focus on non-obvious methods that work even on crammed devices with 16–32 GB of memory. All instructions have been tested on current versions Android 12–14 and are suitable for smartphones Samsung, Xiaomi, Realme, Google Pixel and other brands.

1. Clearing the application cache - why it doesn’t always help

The first advice they give on the Internet is to clear the cache. But often this gives only 100-300 MB of free space, and after a day the memory is full again. Why?

The fact is that application cache are temporary files that are created to speed up the operation of apps. For example, YouTube caches videos, Google Maps caches cards, and messengers cache stickers and GIFs. Clearing the cache manually via Settings → Applications → Storage → Clear cache gives a temporary effect because:

• 🔄 Applications immediately begin restoring the cache the next time startup.
• 📁 Part of the cache is stored in hidden folders (for example, /data/data/), which are not visible without rootrights.
• 🚫 Some applications (for example, Facebook or TikTok) aggressively cache data even after cleaning.

For clearing the cache to have a real effect, use automatic tools:

• 🤖 Built-in utility Storage and cache v MIUI (on Xiaomi/Redmi/Poco).
• 🧹 Google Files (Google's "Files" application) - analyzes "junk" files, including remnants of deleted applications.
• 🛠️ SD Maid (requires root, but finds a cache that is not available with standard means).

⚠️ Attention: Clearing the cache Google Play Services or Android System WebView may cause problems with Google services. Do this only if you are sure that the problem is in these applications.

2. Removing unnecessary APKs and leftover applications

When you delete an application via Settings or Google Play, the following are often left on the phone:

• 📦 APK files (installation packages) in the folder /data/app/.
• 🗑️ Residual data in /data/data/ (settings, databases).
• 🖼️ Cache and media files in folders like Android/obb/ or Android/data/.

To find and remove this garbage:

1. Open Google Files → Cleanup → Delete unnecessary files.
2. Use Files by Samsung (on devices Samsung) → Storage analysis → Unnecessary files.
3. For advanced users: connect the phone to the PC and through ADB execute the command:

   adb shell pm list packages -u

   It will show a list of applications with the flag -u (uninstalled), but physically still occupying space.

Pay special attention folder Android/obb/ —additional game data is stored here (for example, graphic packages for Genshin Impact or Call of Duty Mobile). Even after deleting the game, these files can weigh several gigabytes.

3. Optimization of system applications and “built-in garbage”

Smartphone manufacturers (Samsung, Xiaomi, Huawei etc.) install on devices pre-installed applications, many of which cannot be removed using standard methods. background, even if you do not use them.

How to deal with them:

To remove system applications without rootrights:

1. Enable USB debugging in Settings → About phone → Build number (press 7 times).
2. Connect the phone to the PC and run the command:

   adb shell pm uninstall -k --user 0 package name

   (You can find out the package name via adb shell pm list packages | grep "name")

⚠️ Attention: Removing system applications may lead to unstable operation of the phone. Do not delete services with names com.android., com.google. or related to Modem/Telephony.

4. Transferring data to an SD card or the cloud - myths and reality

Many people advise transferring files to SD card or to the cloud. But there are pitfalls:

• 🔄 Not all applications support transfer to SD. For example, WhatsApp i Telegram do not allow saving media files to a memory card.
• ⚡ SD cards of a lower class UHS-I (U3) slow down the phoneif used for storage applications.
• ☁️ Cloud services (Google Photos, Yandex Disk) save space, but require a stable Internet connection to access files.

How to transfer data correctly:

• 📷 Photos and videos: Enable the Google Photos option Free up space (it will delete local copies, leaving thumbnails).
• 🎵 Music and documents: Use Yandex Disk or Mega with automatic downloading.
• 📱 Applications on SD: V Settings → Applications → Storage → Edit (does not work on all phones).

If your phone supports Adoptable Storage (combining internal memory and SD card into one partition), this may be a solution. However:

• ✅ Plus: applications are installed on the card automatically.
• ❌ Minus: the card becomes “tied” to the phone and is not readable on other devices.

5. Cleaning hidden folders and temporary files

Android creates many hidden folders that are not visible in the standard file manager. Here's where to look for "invisible garbage":

To access hidden folders:

1. Use a file manager with support root (for example, Root Explorer or FX File Explorer).
2. Connect your phone to the PC and via ADB execute:

   adb shell
   su
   rm -rf /data/log/*
   rm -rf /data/tombstones/*

If you do not have rootrights, try clearing the cache via Recovery Mode:

1. Turn off the phone.
2. Hold Power + Volume Up (key combination depends on the model).
3. Select Wipe cache partition.

⚠️ Attention: Deleting files in /data/ without understanding their purpose may cause the system to crash. Do not delete folders named system, vendor or boot.

6. Optimizing Android: disabling unnecessary functions

Some functions Android actively consume memory, even if you do not use them. Disable them to save space:

• 📡 Auto-update applications: Disable in Google Play → Settings → Auto-update applications → Never.
• 🎥 Automatic downloading of media in messengers: Turn off auto-downloading of photos and videos. WhatsApp/Telegram disable auto-downloading of photos and videos.
• 📊 Diagnostic data: Disable sending error reports to Settings → System → Diagnostics.
• 🔊 Voice assistants: Disable Google Assistant or Bixbyif not used.

Also check section "Other" in the storage analysis. They are often hidden here:

• 📄 Downloaded files from the browser (folder Download).
• 🎬 Streaming video cache (Netflix, YouTube, Twitch).
• 📧 Attachments from mail (Gmail or Outlook).

To find these files:

1. Open Google Files → Categories → Downloads or Media.
2. Sort files by size and delete unnecessary ones.

7. Resetting to factory settings is a last resort

If all methods have been tried and the memory is still full, the only option left is factory reset (Hard Reset). data-i="256">🗃️ All user data and settings.

• 🗃️ All user data and settings.
• 🧹 Remains of deleted applications and cache.
• 🔧 System errors leading to memory “leak”.

How to reset correctly:

1. Save important data (contacts, photos, messages) to the cloud or on your PC.
2. Go to Settings → System → Reset settings → Delete all data.
3. After reset do not restore the backup copy —install only the necessary applications.

If after a reset the memory quickly fills up again, the problem may be:

• 🛠️ Faults flash memory (cell wear NAND).
• 🤖 Firmware errors (for example, after an unofficial update).

⚠️ Attention: On some phones (Xiaomi, Realme) after the reset, there may be blocked space due to encryption. In this case, it will help. only flashing.

8. Alternative solutions: cloud phones and external drives

If the internal memory is hopelessly small (for example, 16 GB), and you are not planning to buy a new phone, consider:

• ☁️ Cloud smartphones: Services like Shadow or GeForce NOW allow you to run games and applications on a remote server without taking up space on the phone.
• 💾 External SSD drives: Through OTG adapter you can connect a flash drive or hard drive (for example, Samsung T7 Shield).
• 📱 Second phone: Some users store media files on an old smartphone connected as a USB drive.

To connect an external drive:

1. Buy OTG adapter (for example, USB-C to USB-A).
2. Connect a flash drive or SSD.
3. In the file manager select External storage and transfer files there.

Disadvantages of this method:

• ⚡ Requires a permanent connection to the drive.
• 🔋 Battery consumption increases by 10–15%.

FAQ: Frequently asked questions about clearing memory on Android

adb shell sync