The smartphone Samsung Galaxy J7 was a real bestseller in its time, offering an excellent balance between price and functionality. However, time is inexorable: modern applications are becoming more and more power-hungry, and photos and videos take up gigabytes of free space. Owners of this model are often faced with a situation where the device starts to slow down, and the system issues annoying notifications about lack of space.
Clogged memory is not just an inconvenience, it is a direct threat to operational stability. operating system. When the internal storage is full, the phone cannot create temporary files necessary for the correct operation of applications and Android itself. In this article, we will look at effective cleaning methods that will help restore your gadget to its former speed without having to buy a new device.
We will go from simple built-in tools to advanced methods of working with the file system. You will learn how to safely remove digital junk, transfer data to a memory card, and which folders can be deleted without fear of damaging the system. Let's turn your Samsung J7 into a fast and responsive device, ready for new tasks.
Analyzing storage fullness and finding the culprits
Before you start deleting files, you need to understand what exactly is eating up your precious space. Visual assessment is often deceptive: it seems to us that we took only a couple of pictures, but in fact the folder with instant messengers has grown to several gigabytes. First, you should go to the standard device settings menu.
Navigate to Settings → Memory (or Storage depending on the firmware version). Here the system will provide a detailed breakdown by category: how much space is taken up by images, videos, audio files, documents and, most importantly, applications. Pay special attention to the section "Cached data" and the "Other" item.
Often it is hidden files and remnants of deleted apps that take up the lion's share volume share. If you see that the “Applications” category takes up a disproportionate amount of space, it is worth studying in detail the list of installed software. Some apps that you have not used for a long time may weigh more than your entire photo gallery.
On some versions of the shell TouchWiz or Samsung Experience the "Optimization" function is available. Clicking this button launches an automatic scanner that offers to delete unused files. However, manual control is always more effective than blind trust in algorithms.
⚠️ Attention: Do not delete files from system folders whose purpose is unknown to you. Erroneously deleting libraries may cause the phone to stop booting or certain functions to stop working.
Clearing application caches and system junk
Caches are temporary files that applications create to speed up their work. Browsers save copies of web pages, social networks save pictures from your feed, and maps save fragments of the area. Over time, this useful mechanism turns into ballast, especially if the application has been updated or changed the data structure.
The easiest cleaning method is to use the built-in Samsung service. Go to Settings → Device maintenance → Memory and click the “Clear Now” button. This will remove background processes and some temporary files, but will not affect your personal data.
For deeper cleaning, you need to work with each application separately. Go to Settings → Applications, select the desired app (for example, YouTube or Viber) and find the “Memory” item. Here you will see two buttons: “Clear cache” and “Clear data.”
Use the button “Clear cache” with confidence - it's safe. But be careful with the “Clear data” button: it resets the application to its factory state, deleting logins, settings and saved correspondence within this application.
Clear the cache of your browser and heavy instant messengers (Telegram, WhatsApp) once every two weeks - this will prevent the accumulation of gigabytes of temporary files.
Repeat this procedure for all resource-intensive applications. This is especially true for browsers that can accumulate hundreds of megabytes of history and pictures during a month of active surfing.
Managing photos, videos and transferring to a memory card
Media files are the main enemy of free memory on any smartphone. The camera Samsung J7 records in decent resolution, and one minute video in high quality can weigh more than a thousand documents. It is not practical to store this entire collection in the internal memory.
The ideal solution for this model is to use a card microSD. If you haven't installed a memory card yet, be sure to do so. After installation, go to the “My Files” application (or “File Manager”) and start transferring.
Select the folders DCIM (photos and videos from the camera), Pictures (screenshots and images from social networks) and Download (downloads). Press the menu (three dots) and select “Move” or “Copy”, specifying your SD memory card as the destination.
- 📸 Move photos immediately after important events without waiting for the memory to fill up.
- 🎥 Video files take up the most space - they need to be transferred first.
- 🗑️ Before transferring, delete blurry pictures and duplicates so as not to carry excess weight.
It is also worth setting up the camera so that by default it saves new pictures directly to the memory card. Go to the settings of the “Camera” application, find the “Storage location” item and switch it to SD card.
☑️ Preparing to transfer files
After the transfer, make sure that the files are opened from the new card, and only then delete them from the internal memory. This will free up a significant amount of space for installing new applications.
Working with instant messengers: Telegram, WhatsApp and Viber
Messengers have long ceased to be just a means for text messages. Today these are media harvesters that automatically download all pictures, videos and voice messages from chats. Over the course of a year of active correspondence, the messenger data folder can grow to 5-10 GB.
In WhatsApp go to the application settings, section “Data and storage”. There is a “Storage Management” item. The system will show you the chats that take up the most space and allow you to selectively delete media files without deleting the correspondence itself.
Users Telegram are the luckiest. This messenger stores media in the cloud. Go to Settings → Data and memory → Memory usage and click “Clear cache”. You can even set up automatic deletion of the cache, for example, 3 days after viewing.
| Application | Where to look for settings | What is safe to delete | Risk of data loss |
|---|---|---|---|
| Settings → Data and storage | Video, large files | Low (text remains) | |
| Telegram | Settings → Memory usage | All cache | None (all in the cloud) |
| Viber | More → Settings → Memory | Media cache | Medium (needed backup) |
| Phone settings → Applications | Application cache | Low (login required) |
Do not forget to disable auto-downloading media in messenger settings. Let the pictures load only when you click on them. This will save not only memory, but also mobile traffic.
⚠️ Attention: Before clearing messenger data, make sure that you have a backup copy of important conversations in Google Drive or iCloud, if the function is available.
Deleting unused applications and widgets
Often we install applications “just in case” or use them once and then forget about them. Each such application takes up space not only with its installation file, but also with its data, updates and cache.
Check the installed software. Go to your apps settings and sort them by size or date of last use. If you have not opened a game or utility for the last six months, feel free to delete it.
Pay attention to pre-installed applications from your telecom operator or manufacturer that cannot be deleted in the standard way. For them, you can use the option “Disable”. This will hide the application from the menu and prevent it from running in the background, freeing up some resources.
Also check the home screen and widget menu. Live wallpapers, weather widgets and news feeds constantly update data and store it in a cache. Removing unnecessary widgets from the desktop can slightly, but pleasantly, relieve the system.
How to remove system applications without Root?
To remove deeply embedded applications, you need superuser rights (Root) and a special utility, for example, System App Remover. However, this is risky: a mistake can lead to a bricked phone. It’s better to simply disable them in the settings.
Remember that even after deleting an application, its “tails” may remain in the system trash. Periodically completely clearing the cache, which we talked about above, will help get rid of these remnants.
Using cloud storage and Google Photos
If the physical memory card is full and it’s a pity to delete photos, cloud technologies come to the rescue. The service Google Photos is pre-installed on most Samsung devices and offers a convenient space-freeing feature.
The essence of the method is simple: you upload all your photos and videos to the Google cloud, and then delete them from the device. At the same time, the pictures remain available in the gallery application - they are simply downloaded from the Internet as needed.
To activate this function, open the application Google Photos, click on the profile avatar and select “Free up space”. The system will automatically find pictures that are already saved in the cloud and offer to delete their local copies.
An alternative can be services like Yandex.Disk or Dropbox, which also have photo auto-upload functions. This turns your Samsung J7 into a terminal for accessing the archive, which is actually stored on the company's servers.
⚠️ Attention: Make sure you have a stable Wi-Fi connection before mass uploading photos to the cloud, so as not to exhaust your mobile traffic limit.
Cloud storage is the best way to save memories without buying expensive memory cards, but requires constant access to the Internet to view the archive.
This method is especially effective for those who often take pictures and do not want to manually sort them into folders. Automating the process saves time and nerves.
Resetting to factory settings as a last resort
If none of the above methods gave the desired result, and the phone is still running slowly, there remains a radical, but the most effective method - a complete reset (Hard Reset). This will return the device to the state it was in when you purchased it.
Before starting the procedure, it is critical to back up all contacts, messages and files. After the reset, there will be nothing left on the phone: no photos, no applications, no Wi-Fi settings.
To perform a reset, go to Settings → General settings → Reset → Reset data. Confirm the action and wait for the reboot. The process may take from 5 to 15 minutes.
After turning on, the phone will be clean. Install applications only as needed and immediately set up saving media to your memory card. This will give you a clean start and maximum performance.
What to do if the phone does not turn on after a reset?
If after a reset the device is stuck on the Samsung logo, try entering Recovery mode (hold Volume Up + Power + Home) and select Wipe Cache Partition. If this does not help, you will need to flash it through your computer.
Frequently asked questions (FAQ)
Is it possible to delete the Android folder on a memory card?
No, you cannot delete the entire folder Android on a memory card. It stores application data, game caches and app settings. Deleting this folder will reset all installed applications and lose game progress. You can only delete individual subfolders with a cache of specific deleted apps.
Why is space not freed up after deleting files?
This is a common problem with the recycle bin in the gallery or file manager. When you delete a file, it is often moved to the system trash, where it is stored for 30 days. To free up space instantly, you need to go to the trash in the “Gallery” or “My Files” application and empty it completely.
Does full memory affect Internet speed?
Directly - no, but indirectly - yes. If the memory is full, the browser has nowhere to save temporary page files, and the system does not have enough resources to process network requests. This can lead to freezes when loading sites and slow operation of online services.
How to transfer applications to a memory card on Samsung J7?
Go to Settings → Applications, select the desired app. If the developer has allowed the transfer, the “Change” button in the “Storage” section will be active. Click it and select SD card. However, many modern applications do not support this function.
Is it safe to use cleaner apps from the Play Market?
Most popular cleaners (like Clean Master) are safe, but often contain intrusive advertising and consume a lot of resources themselves. The built-in tools of Android and Samsung are usually sufficient for high-quality cleaning without installing unnecessary software.