How to clear the cache on a Huawei phone: a complete guide for Android and HarmonyOS

Your Huawei started to slow down, applications take a long time to load, and memory runs out for no apparent reason? Most likely, the issue is a full cache - temporary files that the system and apps accumulate during operation. Unlike regular data, the cache is not always deleted automatically, especially on devices with shell EMUI or HarmonyOS. In this article, we will look at how to properly clear the cache on Huawei without risk to the system, what types of cache exist and when deleting it is really necessary.

Many users confuse the cache with junk files or remnants of deleted applications. In fact, the cache is useful data that speeds up the restart of apps. For example, when you open Instagram, the application loads photos into the cache to show them faster the next time you visit. The problem occurs when the cache grows to gigabytes or becomes corrupted. On Huawei this situation is encountered more often due to optimization features EMUIwhich aggressively caches even background processes.

It is important to understand: clearing the cache will not free up much space (usually 100-500 MB), but it can significantly speed up the phone. If you need to free up gigabytes, read our guide to deleting unnecessary files. And here we will focus specifically on the cache: where it is stored, how to find it and when to clear it.

What is the cache on Android and why clear it on Huawei

Cache (from English cache - cache) are temporary files that are created by applications and the system to speed up work. On Huawei the cache is divided into three types:

• 📱 Application cache: data that apps save for quick access (for example, photo thumbnails in the gallery or chat history in messengers).
• 🖥️ System cache: files that it creates EMUI/HarmonyOS to optimize the interface and background processes.
• 🗃️ Dalvik cache: temporary virtual machine files Androidthat speed up the launch of applications (relevant for older models Huawei up to EMUI 9).

On new smartphones Huawei (for example, P60 Pro or Mate 50), the system cache is managed automatically, but the application cache can grow to critical sizes. For example, Telegram or TikTok are able to accumulate up to 1-2 GB of cache over several months of active use. In this case:

• ⚡ Clearing the cache does not delete your accounts, messages or media files are only temporary. data.
• ⚠️ But it may reset settings some applications (for example, in games you will have to adjust the graphics again).
• 🔄 After clearing the application may work slower during the first start, until the cache is restored.

When exactly you need to clear the cache on Huawei:

⚠️ Attention: If the phone starts to overheat, discharge quickly or give errors like "The application has stopped", first try clearing cache. In 30% of cases, this solves the problem without resetting the settings.

How to clear the cache of an individual application on Huawei

The safest way is to delete the cache selectively for those apps that take up the most space. This will not affect. operation of other applications and will not require a reboot.

Instructions for EMUI 10–14 i HarmonyOS 2–4:

1. Open Settings (gear icon on the main screen).
2. Go to section Applications → Manage applications.
3. In the top menu, select the tab All or By size (to sort by cache size).
4. Tap on the desired application (for example, Facebook or Google Chrome).
5. Select Storage → Clear cache.

On some models Huawei (for example, Nova 9 or P40 Lite) the path may be slightly different:

Settings → Applications and notifications → Show all applications → [Select application] → Memory → Clear cache

To avoid searching for each application manually, use sorting by cache size:

Open Settings → Applications

Tap on the three dots (⋮) in the upper corner

Select "Sort by size"

Clear the cache of applications with a volume > 100 MB-->

⚠️ Attention: Do not clear the cache of system applications (for example, com.huawei.systemmanager or Huawei Mobile Services) unless absolutely necessary. This may lead to crashes. work EMUI.

Bulk clearing the cache of all applications on Huawei

If you want to delete the cache of all applications at the same time, without going to each one separately, use the built-in utility Optimization (previously Phone Manager). This method is suitable for Huawei on EMUI 9–14 and HarmonyOS.

Step-by-step guide:

1. Open the application Optimization (icon with a broom or battery). If it is not on the main screen, find it through the system search.
2. Go to tab Cleaning (or Storage in new versions).
3. Wait for scanning to complete (usually takes 10-30 seconds).
4. Click Clear cache (not to be confused with "Clear garbage", which also deletes other temporary files!).
5. Confirm the action, if necessary.

On Huawei s HarmonyOS 3/4 (for example, Mate 60 Pro) the path may look like this:

Optimization → Storage → Analysis → Application cache → Clear

What is important to know:

• 🔄 Bulk clearing does not affect application data (saves, logins, settings).
• ⏳ The process may take 1–2 minutes if a lot of cache has accumulated (for example, 3–5 GB).
• 📉 After cleaning, the free space will increase slightly (usually by 200–800 MB).

Once a week

Once a month

Only when the phone slow

Never cleared-->

Clearing the system cache on Huawei (for experienced users)

The system cache is the files that the shell itself creates EMUI/HarmonyOS to speed up the interface. Clearing it can help if the phone has started. "buggy": settings open slowly, animation lags, or errors like "UI system is stopped" occur. However wrong actions can lead to failures, so follow the instructions carefully.

Method 1: Through Recovery mode (recovery)

1. Turn off the phone.
2. Press and hold Volume up + Power until the logo appears Huawei.
3. In the recovery menu, select Wipe cache partition (control volume buttons, confirm - power button).
4. After cleaning, reboot the phone (Reboot system now).

Method 2: Through ADB (for advanced users)

If you have experience with Android Debug Bridge, you can clear the system cache with the command:

adb shell pm clear-globals

But this method not recommended is for beginners, as it can reset some system settings.

⚠️ Attention: Clearing the system cache via recovery does not delete your data, but may reset some personal settings (for example, wallpaper or the arrangement of icons on the main screen).

What to do if after cleaning system cache has your phone started to work worse?

If after cleaning cache partition lags or errors appear, follow these steps:

1. Reboot your phone 2-3 times - the system will restore the cache automatically.

2. Check for software updates in Settings → System → Software update.

3. If problems persist, perform a factory reset (but this will delete all data!).

Automatic cache clearing: optimization settings on Huawei

Smartphones Huawei have built-in tools that can automatically clear the cache on a schedule or when low level of free memory. This eliminates the need to do it manually.

How to set up automatic clearing:

1. Open Optimization → Settings (gear icon in the top corner).
2. Select Auto cleaning or Scheduled cleaning.
3. Set the frequency: Daily, Weekly or If there is not enough memory.
4. Enable the option Clear application cache (check the box).

On HarmonyOS the path may differ:

Settings → Battery → Energy optimization → Auto cleaning

Advantages of automatic cleaning:

• ⏰ No need to remember about manual cleaning.
• 📈 Maintains an optimal level of free memory.
• 🔋 Can extend battery life (since there are fewer background processes).

Disadvantages:

• ⚠️ Sometimes clears the cache too aggressive, which is why applications take longer to load.
• 🔄 Not all versions EMUI support flexible schedule settings.

What to do if the cache is not cleared or quickly accumulates again

Sometimes users are faced with the fact that the cache not deleted through standard methods or instantly restored after clearing. This may be due to:

• 🐞 Application malfunctions (for example, Facebook or VK incorrect cache management).
• 🦠 Viruses or malwarethat block cleaning.
• 🔧 Errors in the file system (for example, after an incorrect update EMUI).

Solutions for each problem:

Problem	Cause	Solution
Cache is not cleared through Settings	Failure Package Manager	Reboot your phone and try again. If that doesn't help, clear the cache via ADB (adb shell pm clear [package_name]).
The cache is restored quickly	The application actively caches data (for example, TikTok or YouTube)	Limit background activity of the application in Settings → Applications → [Application name] → Battery.
Error "Failed to clear cache"	Damaged cache files or insufficient rights	Try clearing the cache in Safe Mode or through Recovery.
The system cache is not cleared	Protection EMUI from changes	Use Huawei HiSuite on a PC for deep cleaning (USB connection required).

If none of the methods helped, perhaps the problem lies deeper. For example, on some models Huawei (for example, P30 Pro or Mate 20) after updating to EMUI 12 bugs with cache management appear. In this case:

⚠️ Details of cache management may vary depending on the version EMUI/HarmonyOS and phone model. For accurate information, check the "Support" in the official application Huawei Member.

How to clear the browser cache on Huawei (Chrome, Huawei Browser)

Browsers are one of the main cache “drives”. Huawei by default there may be installed Huawei Browser or Google Chrome. Clearing their cache has its own nuances.

For Google Chrome:

1. Open Chrome and tap on the three dots (⋮) in the upper right corner.
2. Select History → Clear browsing data.
3. Set period All time.
4. Tick the boxes Cookies and site data and Cached images and files.
5. Click Clear data.

For Huawei Browser:

1. Open your browser and go to Settings (gear icon).
2. Select Privacy and Security → Clear data.
3. Check Cache and click Clear.

What clears the browser cache:

• 📷 Temporary images and scripts from sites (speeds up page loading when visiting again).
• 🍪 Cookies (if you check this option, you will be kicked out of your accounts on sites!).
• 🗺️ Geolocation data and download history (if selected in the settings).

On Huawei c HarmonyOS the browser cache can be stored in a protected section, so standard cleaning methods sometimes do not work. In this case, use the built-in utility Optimization or reinstall the browser.

FAQ: Frequently asked questions about clearing the cache on Huawei

❓ Will clearing the cache delete my photos or messages?

No, caches are temporary files that applications create to speed things up. Your personal data (photos, messages, contacts) is stored in other sections of memory and is not affected when clearing the cache.

❓ How often should you clear the cache on Huawei?

Optimal frequency - every 1-2 months. If you actively use social networks, instant messengers or games, you can do this more often (once every 2-3 weeks). this. Optimization will help you not to forget about it.

❓ Why do applications run slower after clearing the cache?

This is normal: applications have to reload temporary data (for example, photo thumbnails, map caches or fonts) After 1-2 launches. the speed will return to normal. If the lags persist, check if the graphics settings in the games have been reset.

❓ Is it possible to clear the cache without losing application data?

Yes, clearing the cache (Clear cache in the application settings) does not affect saves, logins or settings. select Clear data, this will delete all application data (as if reinstalling).

❓ Why on my Huawei there is no "Clear cache" button in the application settings?

This may be due to:

1. Outdated version EMUI (update the software in Settings → System → Software update).
2. A system application that does not have an interface for manual cleaning (use ADB or Recovery).
3. Restrictions HarmonyOS on new models (for example, Mate 60). In this case, use Optimization.