Modern smartphones based on Android have enormous capabilities, but over time they begin to work slower. The main reason for slowdowns is often the accumulation of temporary files that the system and applications save to speed up their work. This data is called cache, and excess of it can take up gigabytes of valuable space in the device's internal memory.
Many users mistakenly believe that clearing the cache will delete personal photos, contacts or correspondence. This is not true. Cache —this is only temporary storage necessary for quickly loading interface elements and content. Regular cleaning helps restore your phone to its former response sharpness and make room for new applications.
In this article we will look in detail at safe methods for deleting temporary files both for the entire system and for specific apps. You will learn when to trust built-in tools and when it is better to use third-party software. We will also look at advanced methods through Recovery Mode for cases when the device does not work correctly.
What is a cache and why delete it
Technically, a cache is a memory area where intermediate results of calculations or copies of data are stored. When you open an application, for example Instagram or YouTube, the system loads pictures, videos and menu items into this buffer. The next time you start, the data is taken from fast local storage, rather than downloaded again from the Internet.
However, this mechanism has a downside. Over time, the cache can grow to inadequate sizes, occupying up to 30-40% of all available memory. Moreover, if the files in the cache become damaged, the application may crash or work incorrectly. Clearing the cache solves these problems by forcing the system to recreate the files again, but in the correct form.
It is worth noting that not all cache types are the same. There is a system cache, an individual application cache, and a browser cache. Removing each of them has its own characteristics and consequences. For example, clearing the browser cache will require re-entering passwords on some sites, while clearing the system partition is safe for user data.
⚠️ Attention: Do not confuse clearing the cache with a factory reset. The second procedure completely deletes all your files, accounts and settings, returning the phone to its “out of the box” state.
If your device suddenly starts to discharge faster than usual, try clearing the cache - sometimes background processes with damaged temporary files cause increased energy consumption.
Clearing the cache through the smartphone settings
The easiest and safest way free up space - use the built-in tools of the operating system. The interface may differ slightly depending on the manufacturer's shell (MIUI, OneUI, ColorOS), but the logic of actions remains the same.
First, you need to go to the main settings menu. This item is usually indicated by a gear icon. Next, find the section responsible for storing data. In pure Android it is called “Memory” or “Storage”, and in firmware from Xiaomi or Samsung it can be placed in the “Device Maintenance” section.
The system will automatically analyze the memory usage and offer to delete unnecessary files. This option is often called "Cleanup" or "Free up space." By clicking on it, you will see a list of categories: garbage, cache, remnants of deleted applications. Selecting the cache clearing item will start the process of deleting temporary files without your participation.
- 📱 Go to
Settings → MemoryorStorage. - 🗑️ Click to the “Clear cache” or “Free up space” button.
- ✅ Confirm the action in the dialog box that appears.
- 🔄 Wait for the process to complete, the indicator will show progress.
If automatic cleaning is not available, you can perform the procedure manually for each application separately. Go to the “Applications” section, select a specific app, for example Telegram, go to “Storage” and click the “Clear cache” button. This is especially useful for instant messengers and social networks, which accumulate media files very quickly.
Deleting the cache from Recovery Mode
Sometimes there are situations when the smartphone freezes on the logo when turned on or works extremely unstable after a system update. In such cases, normal cleaning through settings is not possible. Recovery mode comes to the rescue, or Recovery Mode. This is a special environment that is loaded separately from the main operating system.
To enter this mode, you must turn off the device completely. Then you need to hold down a certain key combination. On most devices this is the power button and volume down button. On some models Samsung you may need to connect the USB cable to the computer while pressing the buttons.
Volume Down + Power (hold 5-10 seconds)When the recovery menu appears, control is carried out with the volume buttons (up and down), and the selection is confirmed with the power button. You need to find the item Wipe cache partition. It is important not to confuse it with the item Wipe data/factory reset, which will delete all your data.
| Action | Control keys | Risk of data loss |
|---|---|---|
| Selecting a menu item | Volume Up / Down | No |
| Confirm selection | Power button | Depends on item |
| Clear cache (Wipe cache) | Automatic | Safe |
| Factory reset | Automatic | Complete data loss |
After selecting the clear item the system will ask for confirmation, usually by selecting “Yes” or “Confirm”. The process will take a few seconds or minutes, depending on the size of the accumulated files. When finished, select the item Reboot system now to reboot the phone in normal mode.
What to do if the Recovery menu does not appear?
On some new devices with Android 11 and higher, logging into Recovery is only possible when a USB cable is connected to the computer that is turned on. Also try holding the buttons longer, up to 15 seconds.
Clearing the cache using third-party applications
If the built-in tools do not seem functional enough to you, you can use specialized software from the store Google Play. There are many utilities that not only clear the cache, but also find duplicate photos, unused applications and large files.
One of the most reliable tools is considered Files by Google. This is an official application from OS developers that safely analyzes memory contents. It offers to remove “junk files”, which specifically means cache, advertising remains and temporary data.
Other popular solutions, such as CCleaner or SD Maid, provide a more in-depth analysis. They allow you to set up automatic cleaning on a schedule or when the battery level is low. However, you should be careful with overly aggressive “cleaners” that promise to speed up your phone 5 times - often this is just marketing.
- 🛠️ Install a verified application from the official store.
- 🔍 Run a system scan for junk.
- 🧹 Select the "Cache" category for deletion.
- 🛡️ Check if important files are accidentally marked.
Using third-party software is especially important if you have a smartphone with custom firmware, where standard tools are cut down. Applications can clear the cache of all apps at once with one click, saving you time manually going through the settings of each application.
⚠️ Warning: Avoid applications that require suspicious permissions or promise to “cool the processor” by deleting files. You cannot physically delete files, you can only stop the processes that create the load.
☑️ Criteria for choosing a app for cleaning
Features of clearing the cache in browsers
Web browsers are one of the main consumers of RAM and permanent memory. Saved copies of pages, images and scripts allow sites to load instantly the next time you visit them. However, an outdated cache may prevent updated site designs from displaying or cause authorization errors.
In popular browsers such as Chrome, Firefox or Samsung Internet, cleaning is done through the internal menu. Typically, you need to tap the three dots in the corner of the screen, select “History,” and then “Clear History.” It is important to choose the right time range and data types here.
It is recommended to select the “All time” period in order to remove the maximum possible amount of garbage. Be sure to make sure that the checkbox next to “Images and other files saved in the cache” is checked. The item “Cookies and site data” can be left alone if you do not want to log out of your accounts on all resources.
Clearing the browser cache also solves problems with loading pages when the site shows an old version or elements collide with each other. After the procedure, it may take a few seconds to reload resources when you first access sites, but then the speed will be restored.
Regularly clearing the browser cache once a month helps maintain stable operation of web services and prevents conflicts between script versions.
What not to do when clearing memory
Despite the simplicity of the procedure, there are actions that can harm the operation of your device. The main rule is not to delete files manually through file managers if you are not sure of their purpose. System folders with names like Android/data contain not only the cache, but also important configuration files.
You should not install several cleaning applications at the same time. They may conflict with each other while trying to access the same files, causing the system to freeze. One reliable tool, built-in or third-party, is enough.
It is also not recommended to clear the cache immediately after installing major system or application updates. At this moment, new temporary files are actively being formed, and deleting them may slow down the initial setup of apps. Let the device work for a couple of days in normal mode.
⚠️ Attention: Interfaces and menu names may change with the release of new versions of Android. If you do not find the described item, use the search inside the settings for the word “cache” or “memory.”
Remember that completely clearing all data (not just the cache) is required only in extreme cases, for example, before selling the phone or in case of a serious software failure. For everyday use, regular maintenance of temporary files is sufficient.
Frequently asked questions (FAQ)
Will my WhatsApp conversations be deleted after clearing the cache?
No, clearing the cache only affects temporary files, such as image thumbnails or temporary copies of messages. The correspondence history itself, media files and account settings are saved in full.
How often should you clear the cache on Android?
There is no special frequency. Modern systems do a good job of managing memory on their own. It is enough to perform cleaning once every 1-2 months or only when you notice a lack of free space or slowdown.
Why did the phone begin to work slower after clearing the cache?
This is a normal phenomenon in the first minutes after the procedure. Applications take time to re-download and cache the necessary data. The speed will be restored after actively using apps for a short time.
Is it possible to clear the cache without deleting application data?
Yes, this is a standard function. In the settings of each application there are two separate buttons: “Clear cache” and “Clear data”. Be careful and press the first button to save logins and settings.
Does the cache take up space on the SD memory card?
Yes, many applications save some temporary files on an external drive, if one is installed. Clearing the cache through system settings usually affects both the internal memory and the SD card, freeing up space on both media.