Cache Cleanup on Xiaomi Poco X3: A Complete Guide to Speeding Up Your Phone

Why Poco X3 is slowing down and how cache affects performance

Your Xiaomi Poco X3 is slowing down, apps are loading and memory is running out of steam? 80 percent of the time, cache is the fault, temporary files that the system and programs create to speed up work. Over time, they accumulate, take up gigabytes of memory and, paradoxically, start slowing down the smartphone instead of helping.

On the Poco X3 with its 6/8GB of RAM and 64/128GB of ROM, the problem is compounded by the features of MIUI: the shell aggressively caches data to open frequently used applications faster.

• 🐢 Slowing down animations and lags when switching between programs
• 🔋 Increased battery consumption (the system spends resources on processing unnecessary files)
• 📱 Lack of space for updates or new photos (cache may take up to a few minutes) 10-15 GB on old firmware)
• 🔄 Spontaneous reboots when critically filling memory

In this article, we will analyze all the ways to clean the cache on Poco X3 – from standard MIUI tools to hidden functions through recovery and ADB. And also answer the key question: can you delete the cache without consequences and what will happen if you clean it completely.

Method 1: Clearing the cache of individual applications through settings

The safest method is to remove the cache only for programs that are clearly slowing down or taking up too much space, which does not affect system files and does not require a reboot.

Instructions:

1. Open Settings → Applications → Application Management.
2. Slip on the three dots in the upper right corner and select Sort by size.
3. In the list, find applications marked “Cash: XX MB / GB” (usually messengers, social networks, browsers).
4. Click on the app → Storage → Clear the cache.

For convenience, we have collected TOP-5 “gluttonous” applications on Poco X3 according to users:

Check the free space in the "Storage" section

Close all background applications

Backup important data (e.g. saved in games)

Do not clear the cache of system applications (for example, "Settings" or "Phone")

-->

Important! Don't confuse Clear cache and Clear data. The second will delete all the application settings (logins, game progress) and return it to the "as after installation" state.

💡

If the app is slower after cleaning the cache, that's OK, the first 1-2 runs will restore temporary files, and in a few minutes, the speed will return to its previous level.

Method 2: Completely clean the cache through Optimization

MIUI has a built-in tool for mass cleaning of garbage called Optimization (formerly called Security).

• 🗑️ Application cache (including system cache)
• 📁 Temporary download files
• 🔍 Residual data of remote programs
• 📊 Logs and dumps of the system (if any)

How to use:

1. Open the Optimization application (icon with brush).
2. Press Cleaning → Deep Cleaning.
3. Wait for the scan and tick the Cash points of the applications and Garbage files.
4. Slip Clean and confirm the action.

After the procedure, the phone can slow down for the first 5-10 minutes, which is normal, as the system recovers the necessary temporary files.

Method 3: Cleaning Dalvik cache (for power users)

Dalvik cache files are special files that Android creates to speed up the launch of applications, stored in /data/dalvik-cache and usually not visible to the user.

• 🤖 The phone is slowing down after the update. MIUI
• 🔄 Applications are constantly crashing with the error “App is stopped»
• 📱 The smartphone is overheating for no apparent reason

Recovery will require access to:

1. Turn off the Poco X3.
2. Press the Power button + Volume up until the MI logo appears.
3. From the recovery menu, select Wipe & Reset → Wipe Dalvik Cache.
4. Confirm the action and wait for the completion.
5. Reboot your phone (Reboot → System)

⚠️ Don’t confuse the Wipe Dalvik Cache with Wipe Data! The second option will erase all your data (photos, contacts, apps) and return the phone to factory settings.

The first download after cleaning the Dalvik cache will take 5-15 minutes – this is normal, since the system restores optimized files for all applications.

Method 4: Manually clean through file manager (for advanced ones)

If you want to manually control which files are being deleted, you can use a root file manager (such as MiXplorer or Solid Explorer).

• 🔍 You need to clear the cache of a specific system application (e.g. com.miui.home for launcher)
• 📂 You suspect that the virus is hiding in cache folders
• 🛠️ Standard methods don't help.

Instructions:

1. Install a file manager with root support (such as MiXplorer).
2. Go to /data/data/, where all applications are stored.
3. Find a folder with the name of the package of the desired application (for example, com.facebook.katana for Facebook).
4. Remove the contents of the cache folder inside.

For convenience, here is a list of popular application packages:

com.android.chrome       — Google Chrome


com.whatsapp              — WhatsApp




org.telegram.messenger    — Telegram




com.facebook.katana       — Facebook




com.instagram.android    — Instagram

⚠️ Attention, deletion of files in folders /system or /vendor root-free can lead to loss of warranty or device bribing.Do not edit files unless you are sure of their purpose.

💡

Manual cache cleaning is more effective than standard methods, but requires caution. Error when deleting system files can disrupt MIUI.

Method 5: Cleaning the cache through ADB (for developers)

If you're familiar with ADB (Android Debug Bridge), you can clear the cache of all applications with one command.

• 🖥️ You need to clear the cache on several devices at the same time
• 🔧 Standard methods do not work due to failure MIUI
• 📊 It is necessary to log the cleaning process

Instructions:

1. Install ADB Tools on your PC.
2. Turn on USB debugging on Poco X3 (Settings → About Phone → MIUI version – tap 7 times, then go back to Additional → For Developers).
3. Connect your phone to your PC and execute the command: adb shell pm clear --user 0 com.package.name Replace com.package.name with the name of the application package (e.g. com.android.chrome).
4. To clean the cache of all applications, use: adb shell "su" -c 'find /data/data -name 'cache' -exec rm -rf {} +'" (Root rights are required!)

Once you've done the commands, restart your phone, which is the most radical method, and can lead to temporary system instability if critical files are deleted.

What happens if you completely clear the cache on Poco X3?

Many users are afraid to clear the cache for fear that the phone will stop working.

Myths about cleaning cache, which you should not believe:

• ❌ «Cache cleansing removes photos and videos – no, cache and user files are stored in different sections.
• ❌ «After cleaning, the phone will be like new" - no, the cache does not affect battery wear or processor performance.
• ❌ «Cache needs to be cleaned daily" - no, frequent cleaning only slows down as the system spends resources on file recovery.

Optimal frequency for clearing cache on Poco X3:

• 📅 App cache: once in 1-2 months or when the place ends.
• 🔧 Dalvik cache: only after updates MIUI or in critical failures.
• 🚀 Systemic cache: once every six months for prevention.

FAQ: Frequent questions about cleaning the cache on Xiaomi Poco X3