The limited amount of internal storage often becomes a performance bottleneck for owners of a popular model Samsung Galaxy J7. Despite the fact that this device has proven itself to be a reliable working tool, the standard 16 gigabytes of internal memory quickly fills up with modern applications, system updates and accumulated multimedia content.
When it runs out, the smartphone begins to work with noticeable delays, and attempts to install new apps end with system errors. The user is faced with the need to urgently delete data, but often does it chaotically, without getting the desired result. free space ends, the smartphone begins to work with noticeable delays, and attempts to install new apps end with system errors. The user is faced with the need to urgently delete data, but often does it chaotically, without getting the desired result.
In this guide, we will look at effective methods for freeing up space, from basic manual cleaning to advanced system settings. You will learn how to properly manage files so that Android works quickly and stably, without losing important personal data.
Analysis of disk space usage
Before you start deleting files, you need to understand exactly what is taking up precious gigabytes. The system Android in the shell TouchWiz or newer versions Samsung Experience provides built-in tools for detailed diagnostics.
First, go to the settings section, where summary information about the storage is displayed. There you will see a visual diagram that distributes space between systems, applications, images, videos and other files. This will allow you to identify the main memory “eaters.”
Pay attention to the “Miscellaneous” or “Other” category. Often, remnants of deleted apps or temporary files accumulate there, which the system cannot automatically classify. Analysis of this structure is the first step towards competent optimization.
⚠️ Attention: Do not delete files from system folders if you are not 100% sure of their purpose. An error can lead to unstable operation of the interface or loss of contact with the network.
Use the built-in analyzer to find the most voluminous elements. It often turns out that a couple of gigabytes are occupied by old video files or the cache of instant messengers, the existence of which you have already forgotten.
Clearing the cache and deleting temporary files
The fastest way to get back a few hundred megabytes is to clear cached application data. The cache speeds up the work of apps by storing temporary files, but over time it grows to inadequate sizes, especially in social networks and browsers.
To perform this operation, go to the settings menu and select “Applications”. Here you will see a complete list of installed software. Sort it by size to find the heaviest apps.
Select the application you need, for example YouTube or Instagram, and click on “Storage”. In the menu that opens, you will find the “Clear cache” button. Clicking on it will safely delete temporary data without affecting your logins, passwords or personal correspondence.
- 📱 Clearing the browser cache Chrome or Samsung Internet can free up to 500 MB of space.
- 🗑️ Regularly clearing the messenger cache (Telegram, Viber) is critical to saving memory.
- ⚙️ The “Device optimization” function in the settings allows you to clear the cache of all apps with one click.
In addition to the cache of individual applications, there is a system partition Dalvik Cache, which can also be cleared through Recovery Mode, but this requires more in-depth knowledge and is performed less frequently.
If the “Clear cache” button is inactive, try first force stopping the application in the same settings menu.
Managing installed applications
Many users install dozens of games and utilities that they stop using a week later. Such apps not only take up space, but also consume RAM in the background, slowing down work Samsung J7.
Check your software. Go to the list of applications and review it carefully. If you haven't opened the app in the last month, you probably don't need it. Feel free to remove unnecessary things through the standard manager.
Pay special attention to pre-installed software from the operator or manufacturer, which often cannot be removed in the usual way. For such apps, use the “Disable” function. This will hide the application from the menu and stop its processes, freeing up system resources.
| Application type | Average size | Recommendation |
|---|---|---|
| Social networks | 150 - 300 MB | Clear cache weekly |
| Navigators (Maps) | 50 - 100 MB (+ offline maps) | Delete downloaded regions |
| Games | 1 - 4 GB | Delete after completion |
| Messengers | 200 - 500 MB | Disable auto-loading media |
After deleting heavy games, a significant amount will be freed up volume of space. Remember that some games store additional files in the folder Android/obb, which also need to be deleted manually through the file manager.
☑️ Audit of applications
Transferring data to a microSD memory card
One of the main advantages model Samsung Galaxy J7 is the presence of a slot for a memory card. Proper use of an external microSD is the key to solving the problem of lack of space.
Modern versions Android allow you to transfer some application data to external media. Go to the application settings, select "Storage" and click the "Change" or "Move to SD card" button. Note: this feature is not available for all apps, as developers may prohibit transfer.
The bulk of data - photos, music, documents and videos - should be stored exclusively on a memory card. Set up your camera so that new photos are automatically saved to your external storage device. To do this, in the camera settings, find the “Storage location” item and select SD card.
⚠️ Attention: When formatting a memory card as internal storage (Adoptable Storage), the data from it will be encrypted and cannot be read on other devices without resetting.
Use a file file manager My Files, built into the system, for bulk transfer of files. Select folders DCIM, Download and Music in the internal memory and move them to external storage.
Moving media files to a memory card is the most effective way to increase the available space without deleting the necessary data.
Working with multimedia and folder Downloads
Folder Download often turns into a digital dump where APK installation files, old presentations, promotional images and documents that are no longer relevant are stored.
Check the contents of this directory regularly. Delete all application installation files as they are no longer needed after installation. It is also worth checking the folder Bluetoothwhere received files are often automatically saved.
Photos and videos take up the lion's share of memory. If you have accumulated a gallery over several years, consider using cloud services such as Google Photos. Set up automatic uploading of pictures to the cloud and then deleting them from the device.
- 🖼️ Compressing photos in the camera settings will reduce the size of each photo.
- 🎥 Deleting duplicate videos can free up gigabytes of space instantly.
- 📂 Checking the folder
WhatsApp/Mediaoften reveals thousands of unnecessary images.
Don't forget about the folder Trash (Trash) in the gallery. Deleted files often remain there for 30 days, continuing to take up space. Empty the trash to finally free up space.
Specifics of cleaning instant messengers and social networks
Messengers like Telegram i WhatsApp have their own caching mechanisms that ignore standard system cleaning. They automatically download all received photos and videos to the phone’s memory.
Inside the settings of each messenger, find the “Data and Storage” section. There you can configure automatic cache clearing. For example, in Telegram you can set the “Keep media” option for 3 days or a week.
It is also recommended to disable auto-saving of incoming media files to the phone gallery. This will prevent duplication of files: they will be available inside the chat, but will not clog up the main gallery and take up unnecessary space.
Secret folder .thumbnails
The DCIM system folder often contains a hidden folder .thumbnails, where thumbnails of all your photos are stored. Over time, this file can grow to several gigabytes. It can be safely deleted through the file manager with hidden files displayed, but the system will create it again over time.
⚠️ Attention: The messenger settings interface may differ depending on the version of the application. Always check the current menus inside a specific application.
Regular audit of chats will allow you to delete large files sent by colleagues or friends a year ago. WhatsApp there is a “Storage” function that shows the most voluminous dialogs.
Resetting settings as a last resort
If none of the above methods helped free up enough space, the system may have accumulated critical errors or hidden files that cannot be deleted manually.
In this case, it is recommended to perform a full reset to factory settings (Factory Reset). This procedure will return the phone to the state it was in when you purchased it, erasing all user data, applications and settings.
Before performing a reset, be sure to back up all important contacts, photos and documents. Use your account Samsung Cloud or Google Drive to save data.
Settings → General settings → Reset → Reset dataAfter rebooting, you will get a clean system with the maximum amount of free memory. Install applications selectively so that the problem does not recur in the near future.
☑️ Preparing to reset
Frequently asked questions (FAQ)
Why is there no memory after deleting files? free?
Perhaps the files ended up in the trash of the gallery or file manager, from where they need to be permanently deleted. Also check if they are saved in cloud folders with the offline access function.
Is it possible to delete system applications on a Samsung J7?
Without receiving root access you cannot delete system applications, you can only disable them. Obtaining superuser rights will void the warranty and may damage the phone.
How to transfer all applications to a memory card?
This depends on the version of Android and support for the function by application developers. In the storage settings, you can try to make the memory card the main storage, but this works unstable on older models.
What is the .android_secure file?
This is a hidden folder on the memory card where the system installs data from applications transferred to the SD card. Do not delete it manually, otherwise applications will stop working.