Smartphone Samsung Galaxy S8, despite its age, remains a popular device due to its high-quality screen and ergonomic body. However, over time, users often experience a slower interface, slower applications, and a lack of free space. One of the main causes of such problems is the accumulation of temporary system and app files.
Clearing the cache is a safe procedure that does not delete your personal data, photos or contacts. It allows you to free up internal memory and make the processor work more efficiently by removing outdated logs and temporary data. In this article, we will look at all the available ways to optimize your device.
Owners of a 2017 flagship should understand that UFS driveinstalled in the model can reduce writing and reading speeds over time when it is very full. Regular system maintenance will help extend the comfortable life of the gadget without the need for urgent replacement.
Clearing the cache through standard system settings
The easiest and most affordable way to free up space is to use the built-in maintenance tool. The company has Samsung integrated into the shell Samsung Experience (and newer versions of One UI) a special module for monitoring resources.
To launch the utility, you need to go to the menu Settings and find the section Device maintenance or Device care. By pressing the button Optimize now, the system will automatically analyze the state of the battery, memory and security, offering to delete unnecessary files.
If the automatic mode did not delete all temporary data, you can perform the procedure manually. Go to subsection Memory inside the maintenance menu. Here you will see detailed storage usage statistics and a button Clear nowthat will forcefully delete the cache of background processes.
⚠️ Attention: Built-in optimization deletes only temporary files of running applications. It does not affect the deep system cache, which can accumulate after major firmware updates.
The use of standard products is preferable for daily care. This allows you to maintain RAM in an unloaded state without the risk of deleting important app settings. The regularity of this procedure is approximately once a week.
For quick cleaning, you can add the “Device Maintenance” widget to the main screen. This allows you to free up memory in one click without going deep into the settings menu.
Deleting temporary files of specific applications
Social networks and instant messengers are often the cause of lack of space. Applications like Telegram, Viber or Instagram aggressively store media files and thumbnails in hidden cache folders.
To clear data for a specific app, open Settings and go to Applications. Find the desired app in the list, for example YouTube or Chrome. Tap on it to open the application information page.
In the application menu, select Memory. You will see two buttons: Clear cache and Clear data. It is important not to confuse them: the first deletes only temporary files, the second resets the application to its factory state, deleting logins and settings.
- 📱 The browser cache can take up to 500 MB if you often watch videos online.
- 💬 Messengers save a cache for quickly loading avatars and chat history.
- 🎮 Games use a cache to store temporary resources of levels and textures.
For some applications, such as Google Play Market, clearing the cache may solve problems downloading updates. If the store gives errors, try clearing the cache first, and only then, if necessary, service data.
☑️ Checking problematic applications
Clearing the system cache via Recovery Mode
The most effective method for Samsung Galaxy S8 is clearing partition Cache Partition through recovery mode. This section stores temporary system files that may conflict after updating Android or installing security patches.
Entering Recovery mode on the S8 model has its own peculiarity due to the absence of a physical Home button. First, turn off your smartphone completely. Then simultaneously press the buttons Volume up, Bixby and Power.
Hold all three keys until the logo appears Samsung, then release the power button, but continue to hold the other two. When the Android Recovery menu appears with blue text on a black background, you can release all buttons.
⚠️ Attention: Navigation in the Recovery menu is carried out only with the volume buttons. The power button is used to confirm the selection. Do not press other combinations so as not to reset the settings to factory settings.
Using the volume rocker down, select item Wipe cache partition. Confirm the action with the Power button. The process will take a few seconds, after which a completion message will appear at the bottom of the screen.
Wiping cache...
Cache wipe complete!
After successful cleaning, select Reboot system now to restart the phone. The first startup after this procedure may take longer than usual, since the system will re-create the necessary temporary files.
What to do if the Recovery menu does not appear?
If the phone immediately boots into the system, it means you released the buttons too early or did it too late. Try again, holding the keys until the logo appears, and experiment with the moment you release the power button.
Features of clearing the cache on the Samsung S8
The model Galaxy S8 has a specific memory architecture and sensors that affect the operation of the system. In particular, the presence of an iris sensor and a fingerprint scanner requires constant operation of background security services, which also generate a cache.
Owners of this model should be aware that the built-in 64 GB memory fills up faster due to the high resolution of the camera. Photos in RAW format or videos in 4K create large temporary files during processing, which are not always deleted automatically.
It is also worth noting how the function works Adaptive Battery (if updated firmware is installed). It analyzes application usage and can limit background activity, which indirectly affects the amount of cache generated.
| Cache type | Location | Deletion security | Impact on speed |
|---|---|---|---|
| Applications | Settings → Applications | Absolutely safe | High |
| System (Partition) | Recovery Mode | Safe | Critical |
| Browser | Chrome/Samsung Internet Settings | Safe (logins will be lost) | Medium |
| DNS cache | Engineering menu | Safe | Low |
Regular cleaning of the system partition especially is relevant if you updated your phone from Android 7 to Android 9. Residual files from older firmware versions can take up gigabytes of space and cause conflicts.
Cleaning the Cache Partition is the only way to remove system junk that is not visible to the user through the standard file manager.
Cleaning the DNS and network cache settings
Sometimes problems with page loading speed are not related to memory, but to the network cache. The phone stores the addresses of visited sites in the DNS cache to speed up re-access, but these records may become outdated.
To clear DNS on Android without root access, you can use the hidden testing menu. Open the application Phone and enter the code ##4636##. If the menu opens, go to the Wi-Fi information section.
In some versions of S8 firmware, this code may not work. In this case, an effective solution would be to temporarily turn on the mode Flight for 10-15 seconds, and then turn it off. This will forcibly re-register the device on the network and reset the network cache.
- 🌐 Resetting network settings will delete saved Wi-Fi passwords.
- 📶 Rebooting the router also helps clear the cache on the ISP side.
- 🔒 Using a private DNS (such as Google DNS) can speed things up.
A more radical method is to reset the network settings. In the menu General settings find the item Reset and select Reset network settings. This will return Bluetooth, Wi-Fi and mobile data settings to factory settings.
Automation and third-party utilities
For those who doesn’t want to manually check the settings; there are cleaning apps. However, on modern versions of Android, their effectiveness is limited by the system's security policy, which prohibits one application from cleaning the data of another.
However, tools like Files by Google or built-in Smart Manager from Samsung work correctly. They analyze duplicate files, forgotten downloads and large media files, prompting the user to delete them.
It is not recommended to install “RAM boosters” from unverified sources. They often consume a lot of resources themselves and show intrusive advertising, claiming that they are freeing up memory, although in reality they only make the situation worse.
⚠️ Attention: Avoid applications that promise “cooling the processor” or “speeding up the Internet by 5 times.” Most often, this is fraudulent software that collects personal data.
The best automation is setting up standard scheduled maintenance. In the menu Device maintenance you can enable the "Automatic optimization" option, which will run at night when the phone is not in use.
Why are antiviruses not recommended on S8?
Modern Android has built-in Google Play Protect protection. Third-party antiviruses constantly scan the system in the background, draining the battery and occupying RAM, which is critical for an S8 with 4 GB of RAM.
Frequently asked questions (FAQ)
Will clearing the cache delete my photos and contacts?
No, Clearing the cache (both applications and the system partition) does not in any way affect the user’s personal data. Your photos, contacts, messages and installed applications will remain in place. Only temporary files necessary for the operation of apps are deleted.
How often should you do Wipe Cache Partition on Samsung S8?
It is enough to perform this procedure once every 3-4 months or immediately after a major system update. Clearing the system cache too often does not make sense, since the system needs time to accumulate optimized temporary data.
The phone gets warm after clearing the cache, is this normal?
Yes, this is normal in the first 15-30 minutes after a reboot. The system re-indexes files, updates widgets and restores background processes, which creates a load on the processor Exynos 8895 or Snapdragon 835.
Is it possible to delete the Android system application cache?
It is better not to touch the cache of critical system services manually through the app menu if there are no obvious problems. To do this, use the Recovery mode, which safely clears exactly the partition that is intended for temporary system files.
Why does the cache quickly fill up again after cleaning?
This is a sign of active applications. Social networks and browsers are constantly uploading new content. If the cache grows abnormally quickly (gigabytes per day), perhaps some application is not working correctly and requires reinstallation.