The smartphone Samsung Galaxy A51 remains a popular device due to its balanced characteristics, but over time, users experience a slowdown in the interface. The main reason is often overcrowded application cache and system garbage that accumulates during operation. Regular cleaning allows you to free up valuable internal memory space and return the device to its former response sharpness.
In this article we will analyze in detail all available cleaning methods, from standard settings to advanced engineering modes. You will learn how the temporary cache differs from application data, and why blind clearing can harm the operation of some apps. The Dalvik/ART system cache on modern versions of Android does not require manual clearing by the user, since the system does this automatically upon reboot.
Before taking active steps, it is important to understand the structure of garbage accumulation. One UI operating system has its own optimization mechanisms, which are not always immediately visible. We will look at how to use them correctly so as not to delete unnecessary things, for example, logins and passwords in the browser or saves in games.
Memory analysis and cache types in One UI
The first step to optimization Samsung A51 is understanding what exactly is taking up space. Unlike older versions of Android, modern shells strictly distinguish between temporary files and user data. Cache - these are temporary files that speed up the launch of applications, but over time can become fragmented and take up gigabytes.
Users often confuse the cache with application data. If you delete data, the app will return to its state immediately after installation, losing all settings. The cache can be deleted almost painlessly, although opening the application for the first time may take a little longer. To analyze the storage, you should go to Settings → Device maintenance → Memory.
Here the system will offer automatic optimization, but for deep cleaning Samsung A51 this is not enough. The built-in analyzer will show general numbers, but will not detail which application is the most bloated. Social networks, browsers, and streaming services are often the culprits.
Use the built-in storage analyzer once a month to identify top memory-consuming apps, even if they are rarely used.
It is important to note that cache size can grow exponentially if an app has bugs in its code or does not work correctly with background processes. In such cases, standard cleaning may only provide a temporary effect. It is necessary to observe the behavior of the device after cleaning.
Clearing the cache of individual applications through the settings
The safest and recommended method for Samsung A51 is to manually clear the cache of problematic applications. This approach allows you to specifically remove garbage from apps that consume the most resources. To do this, open Settings → Applications and select the desired service from the list.
In the menu of the selected application, find the section Memory or Memory usage. Here you will see two buttons: "Clear cache" and "Clear data". We are interested in the first option. Clicking on it will instantly free up space without affecting your accounts and progress.
This procedure is especially relevant for instant messengers and browsers. For example, Telegram or Chrome can store gigabytes of temporary files. Regular cleaning of these apps significantly extends the life of the smartphone’s internal memory.
☑️ Application cleaning algorithm
⚠️ Attention: Do not confuse the "Clear cache" button with the "Clear data" button. The second action will completely remove your account from the application and reset all settings to factory settings.
If you use multiple accounts in one application, clearing the cache will not affect their separation, but may require you to re-enter your password the next time you log in in cases. This is normal behavior of the security system.
Using device maintenance mode
Owners Samsung A51 have access to a unique tool - maintenance mode. This is not just clearing the cache, but comprehensive diagnostics and optimization of the system. To run it, go to Settings → Device Maintenance and click the "Optimize Now" button.
The system will automatically close background processes, check for malware and clean up unnecessary files. This method is safer than manual cleaning, since the algorithms One UI know which files can be deleted without damaging the system. After completion, you will see a report on the freed space.
In addition, the “Memory” function is available in this section, which shows detailed statistics. Here you can quickly sort apps by size and delete those you haven't used for a long time. This is more effective than simply clearing the cache of rarely used apps.
| Cleaning type | Security | Efficiency | Risk of data loss |
|---|---|---|---|
| Clearing application cache | High | Medium | No |
| Clear application data | Medium | High | High |
| Optimization device | High | Medium | No |
| Reset settings (Wipe) | Low | Maximum | Full |
Maintenance mode also tests the battery and safety, making it an all-in-one monthly maintenance tool Samsung A51. It is recommended to carry out this procedure regularly to maintain stability.
Clearing the system cache using Recovery Mode
For deeper cleaning that affects system temporary files, use recovery mode (Recovery Mode). This method is useful if the smartphone Samsung A51 started working incorrectly after updating or installing dubious software. This mode is entered using a key combination.
Since on new versions of Android, entering Recovery often requires connecting to a PC via a USB cable, make sure you have one at hand. Turn off your phone completely. Then hold down the buttons Volume up + Side button and connect the cable to the computer. Hold the buttons until the logo appears.
In the menu that appears, navigation is carried out using the volume buttons, and selection is made using the power button. Find item Wipe cache partition. It is important to choose this one and not Wipe data/factory reset, which will delete all your files. Confirm the action by selecting Yes.
⚠️ Attention: In Recovery mode, the touch screen does not work. Use the volume buttons to move up and down, and the power button to confirm your selection.
After completing the process, which takes a few seconds, select Reboot system now. The smartphone will reboot. The first boot may take longer than usual, as the system will rebuild the cache again. This is a normal phenomenon.
What to do if the Recovery menu does not appear?
If the button combination does not work, try connecting the phone to the PC via the original USB-C cable. On new versions of One UI, this is a prerequisite for entering recovery mode. Also make sure that the phone is completely turned off and not just locked.
Using the Device Care function and third-party utilities
The built-in function Device Care (Device Care) in Samsung A51 is often underestimated by users who prefer to install third-party "cleaners". However, the native solution from Samsung is better optimized, as it has deep access to system processes without the risk of conflicts.
In the Device Care settings, you can configure automatic cleaning. Go to the menu, click on the three dots in the corner and select "Automation". Here you can set a schedule, for example, daily cleaning at 3 am when the phone is not in use.
If you still prefer third-party solutions, choose time-tested utilities such as Files by Google or SD Maid. Avoid aggressive “accelerators” that constantly hang in the memory and consume resources themselves, promising the impossible.
Samsung’s built-in tools are more effective than third-party applications, since they do not require additional permissions and do not load RAM.
Third-party applications can be useful for finding duplicate files or analyzing large files that are not visible in the standard manager. However, to directly clear the cache of system services, they are often powerless without root access.
Prevention and storage management
In order not to face the need for constant cleaning, it is worth changing your usage habits Samsung A51. First of all, this applies to instant messengers. In settings WhatsApp or Telegram disable autosaving of media files to the gallery. This will prevent duplicate files.
Check the "Downloads" folder (Downloadsregularly). Often APK installation files, old documents and pictures that are no longer needed accumulate there. Deleting them is the fastest way to free up space.
Use cloud storage for photos and videos. The service Google Photos or Samsung Cloud allows you to store media files online, leaving only thumbnails on the device. This significantly relieves internal memory.
⚠️ Attention: The interface and menu item names may vary slightly depending on the One UI firmware version and the regional version of the smartphone. If you do not find the item, use the search in the settings.
Following these simple rules will allow your Samsung A51 to work quickly throughout its entire service life. Memory is a resource that requires attention, but with the right approach, its management becomes automatic.
Why does memory fill up again immediately after cleaning?
This happens because applications immediately start creating new temporary files for their work. This is normal operation of Android. The cache is needed for performance, so the storage cannot be completely empty.
Frequently asked questions (FAQ)
Is it safe to delete the cache of all applications at once?
Yes, it is safe. Deleting the cache does not affect personal data, logins and passwords. However, after this procedure, applications may load a little slower the first time until a new cache is formed.
Do I need to clear the Dalvik cache on the Samsung A51?
In modern versions of Android with a file system, this operation is performed automatically every time you reboot. Manual cleaning via Recovery Mode usually does not give a performance boost if there are no obvious errors in the system.
Why did the phone start working slower after clearing the cache?
This is a temporary effect. Applications need time to recreate the necessary temporary files. After a few minutes or after a couple of app launches, the speed will be restored.
Can a full cache damage the battery?
Indirectly - yes. If background processes constantly try to write data to full memory or make cyclical errors, the processor works harder, which leads to increased battery consumption.
How to clear the DNS cache on Samsung A51?
To do this, go to Settings → Applications, select the "DNS Server" system application (or find it through the settings search) and Click "Clear cache". Turning airplane mode on and off also helps.