How to clear the cache on Samsung S9: a complete guide

Smartphone Samsung Galaxy S9, despite its advanced age, continues to be a reliable device for many users. However, over time, the accumulation of temporary files can lead to a noticeable decrease in performance, a sluggish interface, and rapid battery drain. Temporary data, or cache, is created by applications to speed up the loading of content, but their excess turns into digital garbage that must be deleted.

Clearing procedure on devices with a shell One UI or older Samsung Experience may differ from stock Android. It is important for owners Galaxy S9 to understand the difference between clearing the cache of a specific application and completely clearing the system cache partition (Wipe Cache Partition). Incorrect actions can lead to the loss of important data, so you should carefully study each step before starting the procedure.

In this article we will analyze in detail all the available methods for freeing memory. We will look at both standard system tools and advanced methods through the recovery menu. You will learn which files can be deleted safely and which ones are not recommended to be touched. Proper cleaning will return your smartphone to its former response speed.

Why do you need to clear the cache on the Samsung Galaxy S9

The cache memory functions as a buffer that stores frequently used data for quick access. When you open a browser or social network, the device downloads images and scripts to a special memory area. This allows you to visit pages again without having to download them again from the Internet. However, operating algorithms cache are not always ideal, and old files may conflict with new application updates.

On the model Samsung S9 over time, the volume of such temporary files can reach several gigabytes. This not only takes up space on internal storage, but also forces the processor to waste resources indexing unnecessary data. The result is slow system operation, long app launches and periodic freezes. Regular maintenance helps prevent these problems.

⚠️ Attention: Clearing the application cache does not delete your personal photos, contacts or logins. However, clearing data (not to be confused with the cache) will reset the application to its factory state, deleting all history and settings.

There are two main types of clearing, which are often confused by users. The first is deleting temporary files of individual apps through the phone settings. The second is a deeper procedure Wipe Cache Partitionthat cleans the system partition used to update software and run the system kernel. Both methods are useful in different situations and require different approaches to implementation.

Menu interfaces may vary slightly depending on the firmware version and regional model of your device. If you don't find a menu item exactly like in the screenshot, look for similar names in the device maintenance section.

Clearing the cache of individual applications through the settings

The safest and most common maintenance method is to work with the cache of specific apps. If you only have one application running slowly, for example YouTube or Instagram, there is no need to clean the entire phone. All you have to do is go into the settings of this particular software and remove the accumulated garbage. This solves problems with a particular app freezing.

First, you need to go to the main settings menu of your Samsung S9. Here you need to find the section responsible for managing the installed software. In modern versions of the shell, this path usually looks like this: Settings → Applications.

In the list that opens, select the app that is not working correctly or takes up too much space.

After selecting an application, you will be taken to the information screen about it. Here we are interested in item Memory or Storage. By clicking on it, the system will show detailed statistics on the use of the space. You will see two main buttons: "Clear cache" and "Clear data". We need the first option, since it deletes only temporary files without affecting your accounts.

• 📱 Go to Settings and select the partition Applications.
• 🔍 Find the desired app in the list (for example, Chrome or Telegram).
• 🗑️ Click on the button Storage, and then select Clear cache.
• ✅ Confirm the action in the pop-up window.

If you want to clear the cache of all installed apps at once, you can use the built-in optimization tool in the main settings menu, find the section Device maintenance or Device care. The system will automatically analyze the memory status and offer to clear unnecessary files. This method is less detailed, but very fast for regular use.

Deep cleaning: Wipe Cache Partition in Recovery mode

When standard methods do not help and the phone starts to slow down completely, more serious intervention is required. Mode Recovery allows you to access system functions that are not available during normal booting. One of these functions is cleaning the system cache partition. This is especially true after updating the firmware. old system files may conflict with new ones.

To enter this mode on Samsung Galaxy S9 you need to perform a certain sequence of actions with the buttons. Without connecting the cable, the recovery menu may not open or show an error.

1. Turn off the smartphone completely.
2 Connect the USB cable to the computer (not. to the charger).
3. Press the buttons simultaneously: Volume Up + Bixby + Power.
4. Hold them until the Samsung logo appears.
5. Release the buttons when the blue Recovery menu appears.

Navigation in the Recovery menu is only possible. volume buttons (up and down), and the choice is confirmed by the power button. You need to find the item Wipe cache partition. Be extremely careful: there is an item nearby Wipe data/factory reset, which will completely delete all your data. Select strictly to clear the cache.

⚠️ Attention: Never select the "Wipe" item. data/factory reset" if your goal is simply clearing the cache. This action will completely reset the phone to factory settings and delete all photos and contacts.

After selecting the item Wipe cache partition the system will ask for confirmation. Select Yes and wait for the process to complete. This will only take a few seconds. Upon completion, the message "Cache wipe complete" will appear. After this, select the item Reboot system now to reboot the phone in normal mode.

What to do if the Recovery menu does not appear?

If the button combination does not work, make sure that the cable is working and connected to the computer or charger with current. Try another USB port. Also make sure that the phone is completely turned off, and not. is in sleep mode. On some firmware, you may need to connect to the PC before pressing buttons.

Using the built-in Device Care function

Samsung has integrated into its devices a powerful automatic maintenance tool called Device Care (or “Device Care”) This utility combines battery and memory optimization functions. and data storage. For owners S9 this is the easiest way to keep your phone clean without deep diving into technical settings.

The function works in the background and periodically analyzes the system state. It identifies applications that consume a lot of energy in the background and suggests limiting their operation. It also scans the storage for duplicate files, unused applications and large files that can be deleted or moved to. cloud.

Function	Description	Recommended frequency
Optimization now	Automatic cache clearing and closing background processes	Daily
Memory	Freeing up RAM to speed up games and applications	When work slows down
Storage	Used space analysis and deletion unnecessary files	Once a week
Auto-optimization	Automatic start of cleaning at night	Constantly (on)

To use this tool, open Settings and find the section Device Maintenance. Click the button Optimize. The system will perform a quick scan and close unnecessary processes. For more detailed work, you can go to the subsection Memory and press the button Clear Now. This will delete temporary files that were not affected by the quick optimization.

Third-party cleaning apps: pros and cons

In the store Google Play there are thousands of apps that promise to speed up your phone in one click. apps like CCleaner, Clean Master or Files by Google are popular among users. They offer a user-friendly interface and additional features, such as finding duplicate photos or managing startup. However, their use on modern Android smartphones has its own nuances.

Starting with Android version 6.0 and higher, the system itself strictly controls application access to memory and background processes. Third-party cleaners often cannot do more than the system's built-in tools. Moreover, some of them themselves work in the background, consuming battery resources and creating their own cache, which they then suggest deleting. This creates a vicious circle.

• 🚀 Pros: Convenient widget on the desktop for quick cleaning.
• 📂 Pros: Advanced search for large files and duplicate media.
• 🔋 Cons: Intrusive advertising in free versions of apps.
• ⚠️ Cons: Risk of deleting important system logs or map caches.

If you still decide to use third-party software, give preference to official ones products from famous developers. Avoid little-known utilities with aggressive advertising. The best choice is an application Files by Googlethat safely analyzes the storage and offers to remove only really unnecessary garbage without interfering with the system.

Prevention and maintenance of system cleanliness

Clearing the cache is a therapeutic procedure, but it is better not to bring the phone to a state where it starts to slow down. Regular prevention will help keep you Samsung S9 in excellent shape for many years. The main rule is not to fill the internal memory to capacity. The system needs free space (at least 10-15%) for the swap files to work correctly.

Periodically view the Downloads (Downloads) folder. Often APK installation files that are no longer needed after installing apps, or documents that you opened once, are saved there. It is also worth checking the messenger folders, as they have a habit of saving all received pictures and videos to the gallery, even if you have already watched them.

Disable automatic saving of media in the messenger settings. You can configure it so that photos and videos are saved only when manually pressed, and are not automatically loaded into the phone’s memory. This will significantly reduce the storage fill rate and reduce the amount of cache that needs to be cleared in the future. WhatsApp And Telegram You can configure it so that photos and videos are saved only when manually pressed, and are not automatically downloaded to the phone’s memory. This will significantly reduce the storage fill rate and reduce the amount of cache that needs to be cleared in the future.

⚠️ Warning: Do not use the RAM Boost features too often. Constantly forcing applications to close causes the processor to waste more energy launching them again, which can reduce battery life.

Frequently asked questions (FAQ)

Will clearing the cache delete my photos and contacts?

No, clearing the cache (both through application settings and through Recovery) affects only temporary technical files. Your personal data, such as photos, videos, contacts, messages and notes, will remain completely safe. Only garbage that speeds up the operation of apps is removed.

How often should you do Wipe Cache Partition on Samsung S9?

This procedure does not need to be done regularly. It is enough to perform it once every 3-6 months or immediately after a major system update. Frequently clearing the system cache does not make sense, since it accumulates slowly and is necessary for stable operation of updates.

Why does the phone run slower after clearing the cache?

This is normal in the first minutes after cleaning. Applications take time to recreate the necessary temporary files and indexes. After several launches of the apps, the operating speed will be restored and even become higher than before cleaning.

Is it possible to clear the cache without connecting to a computer?

To enter Recovery mode on the Samsung Galaxy S9, connecting to a PC via a USB cable is required. This is a feature of this model. However, to clear the cache of individual applications through the phone settings, you do not need to connect to a computer.

What to do if the "Clear cache" button is inactive (gray)?

If the button is inactive, it means that there are currently no accumulated temporary files for the selected application, or they have already been cleared by the system automatically. Try choosing a different application or using general optimization in the "Device Care" section.