A sudden message about low memory is one of the most annoying problems faced by users Android. The device starts to work slower, applications crash, and there is simply nowhere to save new photos. The situation is aggravated by the fact that modern apps and multimedia take up more and more gigabytes, even if you do not actively use them.
Fortunately, the operating system provides many built-in tools to solve this problem without installing third-party software. In this article, we will look at proven methods that will help you regain free space in minutes. You will learn to distinguish a useful cache from system errors and understand which files can be deleted without risking the operation of the smartphone.
Let's start with the simplest and safest actions that do not require deep technical knowledge. It is enough to have access to the settings menu of your gadget. Remember that regular prevention is better than emergency cleaning when the phone is already “choking” from full storage.
Using the built-in cleaning tool
Smartphone manufacturers have long introduced useful utilities into their shells for system maintenance. They are most often called "Cleaning", "Device Care" or "Files". You can find them in general settings or in a separate folder with system applications. This is the fastest way to get an overview of what is taking up space.
Click on the scan button and the system will analyze the storage. The algorithm will find temporary files, residual garbage from deleted apps and duplicates. Built-in cleaner is safe as it will not delete personal data without your confirmation. However, you should carefully check the list before final deletion.
⚠️ Attention: Some system utilities may offer “RAM acceleration” (random access memory). You should not rely on this indicator as a way to free up persistent storage - these are different types of memory, and clearing one does not affect the size of the other.
After analysis, you will see a breakdown by category: images, videos, documents and applications. Often it is in the “Other” or “Miscellaneous” section that gigabytes of forgotten downloads are hidden. Use filters to sort files by size - deleting one heavy video can free up more space than a hundred small text documents.
☑️ Quick cleaning through settings
Clearing the application cache and messenger data
The most voracious consumers of space are often social networks and messengers. Telegram, WhatsApp i Viber automatically save each received photo and video to the device’s memory. Over time, the folders with media files of these applications can grow up to 10–20 GB.
To solve the problem, it is not necessary to delete the applications themselves. Go to the settings of a specific messenger, find the “Data and Storage” section and select “Storage Usage”. Here you can delete the cache of all chats or select specific conversations where you sent a lot of “heavy” files. This action will not delete the correspondence, but will erase local copies of media.
- 🗑️ Go to
Settings → Applicationsand sort the list by size. - 📱 Select the largest application (often YouTube, TikTok or a browser).
- 🧹 Click “Storage” and select the “Clear cache” button.
Be careful with the “Clear data” (or “Reset”) button. Unlike a cache, this function will return the application to the state immediately after installation: you will lose logins, saved passwords and settings within the app. Use it only as a last resort if the application does not work correctly.
In Telegram, you can configure auto-deletion of the cache. Go to Settings → Data and memory → Memory usage and set the cache retention period, for example, “3 days”. The application itself will delete old files.
Analysis and removal of duplicate photos and videos
The camera of a modern smartphone creates high-resolution files that take up a lot of space. Often, users take several takes of the same frame, forget to delete bad pictures, or save screenshots that are no longer needed. Manually sorting through thousands of photos in a gallery is a long and tedious task.
For these purposes, there are specialized applications, such as Files by Google or built-in file managers from Samsung and Xiaomi. They use machine learning algorithms to find visually similar images, blurry frames, and screenshots. You can select the best options from the series, and delete the rest with one click.
| File type | Average size | Recommendation |
|---|---|---|
| Photo (JPEG) | 3–5 MB | Delete duplicates and blurry frames |
| Video (Full HD) | 100–300 MB | Transfer to the cloud or PC |
| Video (4K) | 500 MB - 1 GB | Store only on an external card |
| Screenshots | 1–3 MB | Clean regularly, they are rarely needed for long |
Also check "Trash" folder in your gallery. In many modern shells, deleted photos do not disappear immediately, but are stored there for 30 days, continuing to take up space. Empty the Trash for changes to take effect immediately.
Video files take up 50 to 100 times more space than photos. Deleting just one long video can be more effective than cleaning hundreds of small pictures.
Moving files to the cloud and external media
If physically deleting files is not possible because you need them, consider changing where they are stored. Cloud services, such as Google Photos, Yandex.Disk or Dropbox, allow you to store media files on remote servers. After downloading, you can use the “Free up space” function, which will delete local copies, leaving thumbnails for viewing.
For owners of smartphones with memory card support microSD this is an ideal option for expanding storage. You can transfer your entire folder with music, movies and documents to the card. In the camera settings, you can also specify saving new pictures directly to external storage, relieving the internal memory.
⚠️ Attention: Not all applications support working with a memory card. System apps and some heavy games may require installation in the internal storage for correct operation.
When transferring files, use a file manager. Select the folder you want, select “Move” (not “Copy” to avoid duplicating data) and specify the path to your memory card or cloud storage. This process may take time depending on the amount of data.
Removing unnecessary applications and games
We often install apps “just in case” or try new games that we play only once. Such “zombie apps” take up space for months. Go to the application management section and sort them by date of last use.
If you have not opened the app for more than six months, feel free to delete it. Modern versions of Android have an “Unused Applications” function, which itself suggests removing rarely used software. Also pay attention to the preinstalled apps from the manufacturer (bloatware). Some of them can be disabled in the settings if they cannot be removed.
Pay special attention to games. Modern projects with high-end graphics can weigh 2–3 GB each. If you have completed the game or are tired of it, deleting such a title will instantly return gigabytes of free space to you.
Cleaning the “Downloads” folder and hidden garbage
The folder Download (Downloads) is a “black hole” where APK installation files, saved PDF documents, and presentations end up and forgotten pictures from the browser. Users often download a file, open it, and then forget to delete the original.
Open a file manager and go to this directory. Sort files by size. You may find old update installers that are no longer needed, or banner ads that were accidentally saved while surfing the Internet. Safely delete everything except documents you plan to use soon.
What is a .nomedia file?
If you create an empty file called .nomedia in a folder, your phone's gallery will stop scanning that folder and showing its contents. This is useful if you store work documents with pictures there, but do not want to see them in the general photo feed.
Also check the hidden folders of some applications. For example, browsers can save offline copies of pages, and navigators can save maps of regions for working without the Internet. If you are not planning a trip to a specific city, delete downloaded maps from the navigation application.
⚠️ Attention: Menu interfaces and item names may differ depending on the version of Android and the manufacturer's shell (MIUI, OneUI, ColorOS). If you do not find the described function, use the search in the phone settings.
Radical measures: reset to factory settings
If none of the above methods helped, and the memory is clogged with system garbage that cannot be removed manually, a last resort remains. Resetting to factory settings (Factory Reset) will return the phone to its out-of-the-box state. This is guaranteed to remove all accumulated digital junk, registry errors and file conflicts.
Before this procedure, it is critical to make a complete backup copy of all important data: contacts, photos, correspondence and notes. After the reset, you will have to set up your phone again, re-enter account passwords and download applications. But often after such a procedure, the device begins to work much faster.
Settings → System → Reset settings → Delete all data (factory reset)Use this method only when other options have been exhausted. Often the problem of lack of space lies in one or two specific applications with caching errors, which can be solved by targeted removal without resorting to a full device format.
Factory reset is a “nuclear button”. It solves the problem of lack of space 100%, but requires careful preparation and backup of data before launching.
Why does the memory fill up even if I don’t download anything?
This happens due to the operation of the application cache and system logs. Social networks, browsers and streaming services constantly save temporary data to quickly load content. Over time, this cache can grow to enormous sizes.
Is it safe to delete files from the Android/data folder?
Applications save their working data in this folder. Deleting files from here may result in app settings being reset, game progress lost, or offline content (such as music on Spotify) lost. Delete the contents of this folder only if you are sure that this is a cache of a specific application that you are ready to configure again.
Will deleting photos from the gallery help if synchronization is enabled?
Yes, but with a nuance. If you have synchronization enabled with Google Photos or another cloud, deleting a photo from your device may also remove it from the cloud (depending on your settings). It is better to use the “Free up space” function inside the cloud storage application to delete only the local copy.
Is it possible to transfer applications to a memory card in modern Android?
Starting with Android 6.0, this was possible, but in the latest versions (Android 10–14), many manufacturers and application developers abandoned this function due to the low speed of memory cards compared to internal storage. You can check the possibility in the settings of a specific application.
What is “System data” and how to clear it?
“System data” is a group category that includes update files, system logs, voice assistant data and temporary files. You can clear them only comprehensively: by resetting the settings, clearing the cache of all applications in turn, or updating the phone firmware to the latest version.