Modern mobile devices consume more and more resources, even if you are not an active user of heavy games or professional video editors. Over time, the accumulated information turns into “digital ballast”, which slows down the interface and causes errors when installing updates. Understanding what exactly is taking up spaceis the first step to restoring the performance of your gadget.
Many users make the mistake of deleting important system files or necessary documents in pursuit of free megabytes. However, there are many safe categories of data that can be destroyed without harming the operation of the operating system Android. In this article, we'll look at cleaning algorithms in detail, from simple caches to hidden developer folders.
You shouldn't rely only on the built-in low-space notifications, as they often only suggest removing a small part of the garbage. Manual control over storage allows you to free up gigabytes of space that were quietly “eaten up” by months of using instant messengers and browsers. Let's start systematically cleaning your digital home.
Storage analysis: finding the main space eaters
Before you press the delete button, you need to conduct a complete inventory of what is stored on your device. Built-in analysis tools often show the big picture, but hide the details of how space is allocated between apps and media files. Go to the settings and find the section Storage or Memoryto see a visual diagram.
Usually the lion's share of the volume is occupied by user applications and their data, as well as photos and videos from the gallery. However, the hidden leader often becomes the folder cache, which grows in proportion to the time the phone is used. The system may incorrectly display the size of some folders, so it is useful to use third-party disk analyzers, such as DiskUsage or Files by Google.
Pay attention to the “Other” or “System Files” section. If this item takes up an abnormally large amount of space (more than 10-15 GB), this may indicate the accumulation of debug logs or residual files after unsuccessful updates. In such cases, simply restarting the device sometimes helps the system recalculate the actual amount of occupied space.
Use the “Cleanup” function in the storage settings only as a first step - it deletes only temporary files, but does not affect deep application garbage.
Cleaning application cache and system garbage
Cache is temporary data that applications save to speed up your work, for example, downloaded images from social networks or intermediate browser files. Over time, this data becomes outdated, but continues to take up space, turning into useless cargo. Regularly clearing the cache is the safest way to regain free space without the risk of deleting personal information.
To manually clear it, go to the menu Settings → Applications and select a specific application that consumes a lot of resources. Inside the "Storage" section you will find a Clear cachebutton. It is important not to confuse it with the “Clear data” button, which will reset the application to factory settings and delete your logins and progress.
The system cache can be cleared through the recovery menu (Recovery Mode), but this requires certain skills and is not always necessary on modern versions Android. Most often, it is enough to clear the cache of individual heavy applications, such as YouTube, Telegram or Instagram, which tend to accumulate gigabytes of video streams.
- 🗑️ The browser cache can take up to 1 GB if you often watch videos online without clearing the history.
- 📱 Map applications (Google Maps, Yandex.Maps) store offline maps that need to be deleted manually when changing regions.
- 🎮 Game caches often contain level resources that can be deleted if you do not plan to play in the near future.
Removing duplicates and unnecessary media files
Photos and videos are the largest files in the memory of any smartphone. Often, users take a series of pictures of the same object, forgetting to delete bad frames, or download the same pictures from different sources. The presence of duplicates can quietly take up tens of gigabytes of valuable space.
Modern galleries and file managers have the function of searching for similar images, but for deep cleaning it is better to use specialized software. Before mass deletion, be sure to check the Recently Deleted (Recently Deleted) folder, as the files are stored there for another 30 days and continue to take up space.
You should also pay attention to download folders (Download) and attachments in instant messengers. Many users store there documents, presentations, and funny stickers that were once opened for years and are never needed again. A revision of these folders often gives an instant result of several gigabytes.
⚠️ Attention: Before deleting photos, make sure that they are synchronized with cloud storage (Google Photos, Yandex.Disk), otherwise you will lose them forever.
☑️ Check media files
Working with instant messengers: Telegram, WhatsApp and Viber
Messengers have become the main memory hogs on Android smartphones, since by default they save all received media files to internal memory. It behaves especially aggressively in this regard Telegram, which caches all watched videos and files, even if you did not save them manually.
In the settings of each messenger there is a section “Data and memory” or similar, where you can control the automatic downloading of media. It is recommended to disable autosaving to the gallery for all chats except favorites, and set up periodic automatic clearing of the cache. For example, in Telegram you can set the cache to be deleted if it has not been used for more than 3 days.
Folders with documents and voice messages deserve special attention. Often, heavy archives and presentations are sent in work chats, which remain in the phone’s memory forever. Use the built-in search tools by file type inside the messenger to find and delete the largest attachments.
| Messenger | Where to look for settings | What to delete first | Recommended cache limit |
|---|---|---|---|
| Telegram | Settings → Data and memory | Video and GIF animation | Up to 500 MB |
| Settings → Data and storage | Forwarded photos and videos | Manual cleaning | |
| Viber | More → Settings → Memory | Media cache | Up to 200 MB |
| Discord | Settings → Voice and video | Image cache | Clear everything |
Why does Telegram take up so much space?
Telegram stores the entire correspondence history and media files on servers, so the local cache on the phone can be cleared completely without fear of data loss. All deleted files can be downloaded again from the chat cloud if necessary.
System files and Android folder: what you can touch
Directory Android in the internal storage contains application data, including cache, logs and saved settings. This folder contains subdirectories data and obb. Files in the folder usually represent additional resources for heavy games, and deleting them will make it impossible to launch the corresponding games. At the same time, traces of long-deleted applications may remain inside the folder. If you uninstalled the app, but its folder with the package name (for example, obb Typically represent additional resources for heavy games, and their removal will make the games in question unable to run.
At the same time, inside the folder data There may be traces of applications that were deleted long ago. If you uninstalled a app, but its folder with the package name (for example, com.example.app) remains, you can safely delete it. This is residual garbage that application developers often forget to remove when deleting.
Be extremely careful with files whose names you do not recognize. Deleting system configs can lead to phone malfunctions or loss of account settings. If you are in doubt about the purpose of the file, it is better to leave it or first copy it to your computer.
⚠️ Attention: Do not delete files with the extension
.xmlor.dbfrom the root system folders unless you are 100% sure that they belong to deleted apps.
For advanced users, it is possible to clean it through a computer using the utility ADB. This allows you to access hidden partitions and remove system junk that is not visible through the phone's file manager. However, this method requires enabling USB debugging and knowledge of specific commands.
It is safest to delete only those folders in the Android directory whose names match already deleted applications.
Uninstalling unused applications and services
Simply deleting an icon from the desktop often does not mean complete removal uninstalling the application. Many apps continue to run in the background or store data. Go to the full list of applications through the settings and sort them by size or by date of last use.
Pay special attention to pre-installed software (bloatware), which is often included with a smartphone from the manufacturer or telecom operator. Some of these apps cannot be removed in the standard way, but they can disable. This will hide them from the menu and stop background activity, although they will still take up space.
Use the Sleep function for applications that you rarely use. Modern shells Android (for example, One UI from Samsung or MIUI from Xiaomi) have settings that automatically limit the operation of such apps, preventing them from accumulating cache.
- 🚫 Delete games that you have not played for more than a month - their resources weigh a lot.
- 🛒 Social networks can be replaced with the Lite version or used through a browser to save space.
- 📦 Check for the presence of several file managers or antiviruses - leave only one.
Before deleting a heavy application, check if it contains important saves or local notes that are not synchronized with the cloud.
Transferring data to a memory card and to the cloud
If the internal memory is critically full, it is worth considering the option of transferring user data to external media. Format memory cards microSD allow you to store photos, videos, music and documents, unloading the main system storage. In the storage settings, you can select a memory card as the default recording location for the camera.
Cloud storage offers an even more flexible solution. Services like Google Photos allow you to enable a Free Up Space feature that removes files from your device that have already been uploaded to the cloud. This is an ideal option for those who want to have access to the archive from any device without filling up the phone.
When transferring applications to a memory card (Adoptable Storage function), it is worth considering the speed of the microSD. Cheap cards can slow down the launch of apps, so use only high-speed media (Class 10, UHS-I or higher) to install applications.
⚠️ Attention: Memory cards are less reliable than internal flash memory. Do not store the only copies of important documents on them without backing them up elsewhere.
What is Adoptable Storage?
This is an Android feature that allows you to format a memory card as part of the internal memory. After this, the system will be able to install applications directly onto the card, but it will be encrypted and cannot be read on other devices without formatting.
Is it possible to delete the Android/data folder?
Yes, you can delete the contents of specific subfolders corresponding to deleted applications. However, do not delete the folder structure itself or files of active applications, as this will reset their settings and progress.
Why does the memory quickly fill up again after cleaning?
Most likely, you have auto-saving of media enabled in messengers or background photo synchronization is running. Check your startup settings in Telegram and WhatsApp.
Is it safe to use cleaning applications (Clean Master and analogues)?
Most of these applications themselves are a source of advertising and garbage. It is better to use the built-in Android tools or the Files by Google file manager.
How to delete system updates to free up space?
You cannot delete the current version of the system, but you can delete files from previous versions of updates through the Recovery menu or storage settings (the “Software update files” item). This can free up several gigabytes.
What to do if the “Other” item takes up more than 20 GB?
Try clearing the cache of all applications in a row, rebooting the phone in safe mode to scan for viruses, or checking for forgotten downloads in the Download folder.