The situation when a smartphone suddenly starts working slowly and applications crash due to lack of space is familiar to every Android owner. The “Low Memory” alert often appears at the most inopportune moment, blocking the ability to take a photo or install an important system update. This happens because the operating system Android requires free space not only for storing files, but also for temporary operations such as swapping and virtual memory.
Many users mistakenly believe that deleting a few photos will solve the problem, but the root of the evil often lies deeper - in the bloated cache of messengers and system applications. Proper cleaning requires an integrated approach, including analyzing the storage, working with system files and correctly setting up the synchronization of cloud services. In this article, we will look at proven methods that will help restore your device's performance without having to buy a new gadget.
Before taking drastic measures like resetting the settings, you should try less aggressive optimization methods. Modern shells from Samsung, Xiaomi i Google have built-in analysis tools that are often ignored by users. Understanding what exactly is occupied by your storage is the first and most important step to successful cleaning.
Analyzing storage fullness and searching for hidden files
The first step is to determine exactly what is eating up precious gigabytes. Standard Android tools allow you to look into the folder structure, but often hide system junk. Go to Settings → Storage (the path may differ depending on the version Android) to see the data distribution chart. Here you will immediately notice the leaders in space consumption: usually these are the gallery, instant messengers or application cache.
Particular attention should be paid to folders that are not displayed in the standard gallery. File managers such as Files by Google or Total Commanderwill show the actual size of directories DCIM, Download and Android/data. Users often forget about downloaded files from the browser or attachments in work chats, which can take up tens of gigabytes.
⚠️ Attention: When manually cleaning a folderAndroid/obborAndroid/databe extremely careful. Deleting files from these directories can lead to resetting progress in games or incorrect operation of installed applications.
For a more in-depth analysis, you can use specialized utilities that visualize the file system in the form of a map. This allows you to instantly find forgotten video files or archives that are hidden in the depths of directories. However, even the built-in analyzer can identify the main problems if you carefully study the statistics by category.
Cleaning application cache and system garbage
Cache is temporary data that applications save to speed up their work. Over time, this buffer can grow to incredible sizes, especially in browsers and social networks. Clearing your cache is a safe way to free up space because it doesn't delete your personal data, logins, or passwords. To do this, go to Settings → Applications, select a heavy application and click Clear cache.
System garbage also accumulates as a result of updates and background processes. Some shells, for example MIUI or OneUI, have built-in “cleaners” that automatically find residual files. However, they are not always effective against deep-seated garbage, so sometimes a manual check is required.
- 🗑️ YouTube and TikTok cache: These applications store huge amounts of temporary video files that can be safely deleted through the app settings.
- 🌐 Browsers: Download history and page cache can take up several gigabytes, especially if you actively use web versions of social networks.
- 📸 Camera: Some smartphone models save thumbnails and geolocation data, which are worth checking periodically.
You should not rely only on automatic cleaners from the Play Market, as they often themselves become a source of advertising and excess load on the battery. Built-in Android tools are quite enough to maintain system hygiene if you carry out this procedure regularly.
☑️ Safe cleaning checklist
Cleaning messengers: WhatsApp, Telegram and Viber
Messengers are the absolute leaders in filling up the memory on most smartphones. WhatsApp, Telegram and Viber automatically save all received photos, videos and voice messages to the device memory. Without proper configuration, these applications can quietly “eat up” 10, 20 and even 50 GB of space, duplicating media files in the gallery.
In Telegram, the situation is solved most elegantly thanks to the cloud architecture. In the application settings (Data and memory → Memory usage) you can set the cache to be automatically deleted. This means that media files will be stored on the server and downloaded only when viewed, freeing up local space.
How to set up auto-delete in Telegram
Go to Settings → Data and memory → Memory usage. Set the "Delete cache" timer for 3 days or 1 week. This will not delete your conversations, the files will simply be downloaded again from the cloud if necessary.
WhatsApp works differently, saving all attachments locally. Here you need to use the built-in storage management tool: Settings → Data and storage → Storage management. In this section, you will see a list of chats sorted by volume, and you can delete large video files or sent documents in groups.
⚠️ Attention: Before mass clearing messengers, be sure to create a backup copy of important conversations in Google Drive or iCloud. Deleting files through the file manager may break the structure of the application database.
It is also recommended to disable autosaving of media to the gallery. This will prevent duplication of files: they will be available inside the messenger, but will not take up space in the system folder. Modern cameras shoot in high definition, and one minute of 4K video can take up to 400 MB. It is physically impossible to store thousands of such files on the device without regular cleaning or the use of cloud technologies. DCIM or Pictures.
Working with photos, videos and cloud storage
Media files are the main source of storage space for most users. Modern cameras shoot in high definition, and one minute of 4K video can take up to 400 MB. It is physically impossible to store thousands of such files on a device without regular cleaning or the use of cloud technologies.
The Service Google Photos offers the “Free up space” function, which deletes from the device those pictures and videos that have already been successfully uploaded to the cloud. It the fastest way is safe to clear the gallery without the risk of losing important moments. After using this feature, the files remain available in the application, but no longer take up local space.
If you don't want to rely entirely on the cloud, consider changing your shooting format. In the camera settings, you can switch to a more efficient codec HEIF/HEVCthat provides better quality in a smaller file size compared to standard JPEG. It's also worth checking the Trash folder in the gallery, as deleted photos are often stored there for another 30 days.
| File type | Average size (1 min/piece) | Recommended action |
|---|---|---|
| Photo (JPEG) | 3-5 MB | Compress or delete duplicates |
| Photo (RAW) | 25-50 MB | Transfer to PC immediately |
| Video (1080p) | 100-150 MB | Upload to the cloud |
| Video (4K 60fps) | 400-600 MB | Delete after processing |
Regularly transferring archived photos to a computer or external hard drive will help keep your smartphone in good shape. You shouldn't turn your phone into the only storage for your family archive for all the years.
Use the Smart Storage feature in Google Photos or iCloud to store only recent photos in full resolution, and automatically compress old ones to save space.
Deleting unused applications and games
The average user only uses a small part of installed applications. Games, banking apps for infrequent payments, or delivery services that you haven't used for months should be removed. Not only do they take up space, but they can also run in the background, consuming resources.
Google Play has an application management feature that shows you the last time you opened an application. If more than 3 months have passed since the last launch, the application can be safely deleted. For some system applications that cannot be removed in the standard way, it is possible disable through the developer menu or ADB commands, which also frees up space in the user section.
- 🎮 Games: modern projects with console-level graphics can take up 5-10 GB. Have you completed the game? Delete the cache and data, or the game itself.
- 🛒 Marketplaces: often have a bloated cache of viewed products, which can be cleared without deleting the application.
- 📱 Double: check if you have two browsers or two file browsers managers performing the same functions.
It is also worth paying attention to the widgets on the desktop. Beautiful, but heavy weather widgets or news feeds constantly update data and occupy RAM, which indirectly affects the overall system performance when there is a lack of resources.
Using a memory card and USB storage
If the internal memory of the device is limited (for example, 32 or 64 GB), expanding the storage may be the only way out. Many smartphones support microSD cards, to which you can transfer photos, videos and even some applications. In the menu Settings → Storage you can select a memory card as the default recording location for the camera.
However, it is worth considering the speed of memory cards. Cheap cards can slow down high-definition video recording or slow down the launch of applications transferred to external media. It is recommended to use standard cards UHS-I or UHS-II from trusted manufacturers.
⚠️ Attention: Interfaces and names of menu items may differ depending on the Android version and smartphone model. If you do not find the described function, check the official instructions of the manufacturer of your device.
An alternative to memory cards are USB flash drives with a Type-C connector. They allow you to quickly reset large amounts of data and free up space without requiring permanent installation on your phone. This is a convenient solution for periodic archiving of information.
The combination of cloud storage for photos and a memory card for media files is the optimal strategy for devices with a small amount of built-in memory.
Radical measures: Reset to factory settings
If none of the above methods helped and the message “Little” memory" continues to appear, the system may have accumulated critical errors or file system fragmentation has reached the limit. In this case, a full reset to factory settings helps (Factory Reset). This procedure completely wipes the phone, returning it to stock-as-store condition.
Before performing a reset, it is critical to create a complete backup of all data. After the reset, the phone will be empty, and it will be impossible to restore contacts or photos without a backup. The process is launched through Settings → System → Reset settings or through the Recovery menu (by holding down the volume and power buttons when the phone is turned off).
adb reboot recoveryThis method is guaranteed to free up 100% of user memory and often works wonders on the performance of older devices. However, this is an extreme measure that should be resorted to when software cleaning is no longer effective.
What to do if the memory fills up immediately after the reset?
If after the reset the space quickly runs out without your action, check the automatic synchronization. Perhaps the phone immediately began uploading thousands of photos from the cloud or updating heavy applications. Disable Wi-Fi during initial setup and set up selective synchronization.
Why do system files take up so much space?
The “System Files” section includes not only the OS, but also the cache of all applications, firmware updates that have not yet been applied, and error logs. Sometimes temporary update files are not deleted automatically and require manual cleaning through the Recovery or ADB menu.
Is it possible to delete files from the Android folder?
You can delete files inside the Android folder (specifically data i obb) only if you understand what they are responsible for. Deleting a specific app's folder will reset its settings and progress. Deleting system folders can lead to unstable Android operation.
How to clear memory if the phone does not turn on?
If the phone is stuck on the logo due to full memory, try booting into Safe Mode (usually long pressing the power button on the lock screen). In safe mode, third-party applications do not work, which can free up some space for starting the system.