What to do if Android doesn't have enough internal memory: a complete guide

Is the internal memory of your smartphone full to capacity, and there is nowhere to save new applications and photos? This problem is familiar to most users of Androiddevices, especially with budget models of 16–32 GB. Even after deleting unnecessary files, free space melts before our eyes - the system eats up memory with caches, updates and hidden data. In this article, we will look 10 proven methodshow to free up space on Android without losing important information, including hidden settings and little-known functions.

The reasons for low memory often lie not in your actions, but in the peculiarities of your work. Android. For example, applications may take up 2-3 times more space than indicated due to cache and temporary files. And the function Google Play, due to cache and temporary files. A function automatic optimization, which is supposed to clean up garbage, works ineffectively in practice. We tested all methods on devices with Android 10–14 (including Samsung One UI, Xiaomi MIUI and stock Android) and selected only those that give real results.

1. Analysis of occupied space: what is eating up memory?

Before cleaning your smartphone at random, determine which files and applications take up the lion's share of memory. Modern versions Android have built-in analysis tools, but they are often hidden deep in the menu.

Open Settings → Storage (on some devices the path may differ: Settings → Memory and backup → Internal memory). Here you will see a diagram of memory distribution by categories: Applications, Images, Video, Audio and System data. Click on any category to see a detailed report. For example, in the section Applications you can sort apps by size and see how much space their data and cache take up.

• 📊 System data (often 5–15 GB): this includes the system cache, update files, backups and logs. They cannot be deleted manually, but can be reduced (more on this below).
• 🎮 Games: even after deleting a game, save files may remain (for example, in /Android/obb/ or /Android/data/).
• 📷 Photos and videos: modern smartphones save pictures in resolution 12–108 MP, and 4K videos weigh gigabytes. Check the folder DCIM for duplicates.
• 🗑️ Junk files: temporary installer files (.apk), map cache in Google Maps, downloads from instant messengers.

If the built-in analyzer is not enough, use third-party utilities like Files by Google or SD MaidThey show hidden files, duplicates and offer safe cleaning. For example, Files by Google has a function "Free up space", which automatically finds unnecessary files (screenshots, memes, old APKs).

2. Clearing cache and application data

Application caches are temporary files that speed up apps, but over time they grow to gigantic sizes. For example, a cache YouTube or TikTok can occupy several gigabytes, and a cache Google Play Services up to 1–2 GB. Clearing the cache is safe: applications will simply reload the necessary data the next time they are launched.

To clear the cache for an individual application:

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

To mass clear the cache of all applications:

1. Open Settings → Storage.
2. Click Other applications (or Cached data on some devices).
3. Confirm the cleaning (you may need to enter a password).

⚠️ Attention: Do not confuse clearing the cache with clearing data! The second function deletes all settings, accounts and saves in the application (for example, in games or instant messengers). Use it only if you are ready to set up the app again.

Some applications (for example, Facebook or VK) store media files in a separate folder. To delete them:

• Open a file manager (for example, Files by Google or built-in).
• Go to /storage/emulated/0/Android/data/.
• Find the folder with the name of the application (for example, com.facebook.katana) and delete it contents.

Clear the cache of individual applications in Settings

Check the /Android/data/ folder for garbage

Use Files by Google for automatic cleaning

Do not touch the /Android/obb/ folder without a backup copies-->

3. Transferring data to an SD card or cloud

If your smartphone supports microSD memory cards, transferring some data to it can free up up to 50% of the internal memory. However, there are nuances:

• 📱 Starting from Android 6.0, memory cards can be used as internal storage (function Adoptable Storage), but this slows down the operation of the device.
• 🎵 Music, photos and videos can be transferred to an SD card without loss, but applications - not always (depending on the manufacturer).
• ⚠️ Class cards A1 or A2 (for example SanDisk Extreme) are suitable for installing applications, regular ones are only for media files.

How to transfer files to an SD card:

1. Insert the card into the slot (if supported).
2. Open the file manager, select the files (photos, videos, music).
3. Click Move and select the SD card as the target folder.

To transfer applications:

1. Go to Settings → Applications.
2. Select application → Storage → Change (if the option is active).
3. Specify the SD card as the storage location.

⚠️ Attention: On devices Samsung i Xiaomi transporting applications to SD is often blocked. In this case, only root access will help (but this is risky for beginners).

Cloud storage is an alternative to SD cards. Services like Google Photos, Yandex Drive or Dropbox offer free space (15–50 GB) for backing up photos and videos. For example, in Google Photos you can enable automatic download and delete local copies after synchronization:

1. Open Google Photos → Settings → Backup and sync.
2. Turn on the function and select quality (High —unlimited space, Original —calculated from the Google Drive quota).
3. After downloading, delete files from the device through the menu Free up space.

Storage method	Pros	Cons	Suitable for
SD card (class A1/A2)	Cheap solution, does not depend on the Internet	May slow down, not all applications are transferred	Photos, videos, music, some applications
Cloud (Google Photos, Yandex Drive)	Automatic backup, access from any device	Requires Internet, limited free space	Photos, videos, documents
USB-OTG drive	Large capacity (up to 1 TB), high speed	Need to be carried with you, not all applications support	Movies, backups, large files
External SSD/HDD	Maximum volume (up to 5 TB), reliability	Expensive, requires OTG adapter	Archives, backups, media library

4. Removing system junk and unnecessary files

Android creates many hidden files that are not visible in the standard file manager. These include:

• 🗑️ Residual files after removing applications (folders in /Android/data/ and /Android/obb/).
• 📦 APK files installed applications (lie in /download/ or /apk/).
• 🗺️ Cache maps (Google Maps, Yandex.Maps, 2GIS can take up to 1–2 GB).
• 📥 Downloads from messengers (Telegram, WhatsApp, Viber store media in folders /Telegram/, /WhatsApp/Media/).

How to find and remove hidden junk:

1. Use a file manager with access to system folders (for example, FX File Explorer or Solid Explorer).
2. Turn on display hidden files in the manager settings.
3. Check the following folders:

   /storage/emulated/0/Download/ # Downloads from the browser
   /storage/emulated/0/Android/data/ # Application data
   /storage/emulated/0/Android/obb/ # Additional game files
   /storage/emulated/0/DCIM/.thumbnails # Photo thumbnails

4. Delete unnecessary files (for example, old APKs, duplicate photos, map cache).

To automate the process, the following utilities are suitable:

• 🧹 SD Maid: finds residual files, empty folders and duplicates.
• 🔍 Files by Google: has a built-in garbage cleaner and storage analysis.
• 🗃️ CCleaner: clears cache, history and temporary files (caution - may delete necessary data).

💡

Before mass deleting files, create a backup copy of important data. For example, copy the folder DCIM to your computer or to the cloud. This will protect you from accidentally losing photos and videos.

5. Optimizing the performance of applications and games

Many applications “bloat” over time due to the accumulation of data. For example, WhatsApp can take up several gigabytes due to saved media files, and games like Genshin Impact or Call of Duty: Mobile download additional resources to the folder obb. Here's how to reduce their appetite:

For instant messengers (WhatsApp, Telegram, Viber):

• 📸 Disable automatic media downloading:

  WhatsApp → Settings → Data and storage → Automatic media downloading

  Select Only via Wi-Fi or Never.

• 🗑️ Clear chat history once a month (in Telegram possible delete media from chats via Settings → Data and memory).
• 🔄 Use the function "Free up space" in WhatsApp (Settings → Storage).

For games:

• 🎮 Delete unnecessary games or transfer their data to an SD card (if supported).
• 🗃️ Clear the game cache through Settings → Applications → [Game] → Storage → Clear cache.
• 💾 For heavy games (for example, PUBG Mobile) use light versions (PUBG Mobile Lite).

For browsers (Chrome, Firefox, Opera):

• 🌐 Clear history and cache once a week:

  Chrome → ⋮ → History → Clear data

  Select All the time and check Cached images and files.

• 📥 Disable file downloads by default in Settings → Downloads.
• 🔄 Use Lite mode (in Chrome: Settings → Lite mode).

How to reduce the size of the Telegram database?

In Telegram all media files and messages are stored in a local database, which can grow to several gigabytes. To clear it:

1. Go to Settings → Data and memory.

2. Click Clear Telegram cache.

3. In the section Storage select Clear history for old chats.

4. data-i="282">to save space. Autoloading media to save space.

6. Using Android functions to free up memory

Modern versions Android have built-in tools for optimizing memory, but they are often hidden or work ineffectively. enable:

1. "Free up space" function (Android 8.0+):

• Go to Settings → Storage.
• Click Free up space (or Clean up on some devices).
• The system will offer to delete unnecessary files (screenshots, duplicates, old downloads).

2. Automatic cleaning (Android 9.0+):

• Enable Adaptive storage:

  Settings → System → Advanced → Adaptive storage

  This function automatically deletes unused files and cache.

• On Samsung a similar option is called Smart Cleanup (Settings → Device Maintenance).

3. Limiting background activity:

• Some applications are constantly synchronized in the background, consuming memory. Limit them:

  Settings → Applications → [Application] → Battery → Optimization

  Select Limit background activity.

• On Xiaomi and Huawei use Memory protection in the battery settings.

4. Resetting the system cache (for advanced users only!):

• This function clears the system cache, which can take up to 1-3 GB.

  Settings → System → Reset → Reset cache

  After the reset, turning on the smartphone for the first time will take longer, but the user's data will not be affected.

⚠️ Attention: On some devices (for example, Xiaomi c MIUI), resetting the cache may cause the camera or other functions to malfunction. Before the procedure, check the reviews for your model.

💡

Built-in Android tools (for example, "Free up space") often miss hidden files and system application caches. For deep cleaning, use them in combination with third-party utilities like SD Maid.

7. Radical methods: resetting to factory settings

If all the previous methods did not help, and there is critically little free memory (less than 500 MB), there remains reset to factory settings. This will erase all data, apps and settings, returning the smartphone to its out-of-the-box state. Before the procedure:

• 📱 Do backup important data (contacts, photos, messages). Use Google Account for synchronization or a app like Titanium Backup (requires root).
• 🔐 Write down or take a photo of your Wi-Fi passwords and accounts.
• 📋 Save the list of installed applications (can be exported via Google Play).

How to reset:

1. Go to Settings → System → Reset (on some devices: Settings → General settings → Reset).
2. Select Delete all data (reset to factory settings).
3. Confirm the action (you may need to enter a PIN code or graphic key).
4. Wait for completion (takes 5-15 minutes).

After reset:

• 🔄 Restore data from backup.
• 📥 Install applications selectively, avoiding unnecessary.
• 🛡️ Disable automatic downloading of updates for applications in Google Play.

⚠️ Attention: On devices with MIUI (Xiaomi) or ColorOS (Oppo) after resetting, you may need to link to the manufacturer's account. Make sure you remember your login. and password!

8. Prevention: how to avoid memory shortages in the future

To prevent the problem from recurring, follow these simple rules:

• 📅 Regular cleaning: Once a month, check the storage through Settings → Storage and delete unnecessary files.
• 🚫 Control settings: Do not download applications “just in case.” Use Google Play to manage settings.
• ☁️ Cloud backups: Configure automatic uploading of photos and videos to Google Photos or Yandex Drive.
• 🔄 Updates via Wi-Fi: In Google Play turn off automatic application updates via the mobile data (Settings → Automatic application updates → Only via Wi-Fi).
• 📂 File organization: Store photos and videos in the cloud or on an SD card, not in internal memory.

Settings to save memory on new devices:

• On Samsung: enable Smart cleaning on Settings → Device maintenance.
• On Xiaomi: activate Deep cleaning in Settings → Memory.
• On stock Android: use Adaptive storage (Settings → System → Advanced).

If you often install heavy games or work with large files, consider buying a smartphone with expandable memory (slot for microSD) or models with 256 GB of internal memory (for example Samsung Galaxy S23 Ultra or Xiaomi Redmi Note 12 Pro+).

💡

Prevention is the best way to avoid memory shortages. Regularly clearing the cache, monitoring settings and using cloud storage will save you hours of struggle with a clogged smartphone.

FAQ: Frequently asked questions about lack of memory on Android

Is it possible to transfer applications to an SD card if the manufacturer has blocked this function?

On most modern devices (especially Samsung i Xiaomi) transferring applications to SD is blocked. You can only get around this using root access, but this will void the warranty and may cause unstable operation. The alternative is to use lite versions of applications (for example, Facebook Lite) or store only media files on the card.

Why is there no free space after deleting files does it increase?

This is due to the characteristics of the file system Android. Deleted files can remain in basket (if you use a file manager with such a function) or take up space in cache. Try: Trash data-i="415">Use utilities like

1. Reboot the device.
2. Clear cache via Settings → Storage.
3. Use utilities like SD Maid for deep cleaning.

If the problem persists, check the device for viruses - some malware blocks the release of memory.

How to clear memory if the smartphone does not turn on due to lack of memory?

If the device does not is loading due to critically low memory, try:

1. Boot into Safe Mode: hold the power button → press and hold Turn off power → select Safe Mode. In this mode, only system applications work, which will allow you to delete unnecessary files.
2. Connect to PC: use ADB (Android Debug Bridge) for deleting files manually. For example, the command:

   adb shell pm uninstall --user 0 com.example.app

   will remove the specified application.

3. Reset via Recovery: hold down the button combination (usually Power + Volume up) to enter the recovery menu and select Wipe Cache Partition.

If all else fails, all that remains is full reset (with data loss).

Which applications "eat up" memory the most?

Top 5 "gluttonous" applications (according to analysis Androiddevices in 2026):

1. Games: Genshin Impact (15+ GB), Call of Duty: Mobile (5–8 GB), PUBG Mobile (3–6 GB).
2. Social networks: Facebook (up to 1 GB cache), TikTok (2–4 GB), Instagram (500 MB–1 GB).
3. Messengers: Telegram (up to 10 GB with active use), WhatsApp (1–3 GB of media files).
4. Maps and navigators: Google Maps (1–2 GB map cache), Yandex.Maps (500 MB–1 GB).
5. Media: Netflix (up to 1 GB for downloaded movies), Spotify (500 MB–1 GB music cache).

Regularly clear the cache of these applications or limit their background activity.

Do memory cleaners like Clean Master help?

Applications like Clean Master, CCleaner or DU Speed Booster are often advertised as a magical cure for low memory, but in practice:

• ✅ They can delete cache and temporary files, but this can be done manually.
• ❌ They often slow down the device., since they themselves consume resources in the background.