Smartphone Xiaomi Redmi Note 7 even several years after its release remains a popular choice due to its balanced characteristics and reliable platform Qualcomm Snapdragon 660. However, over time, many users experience slowdowns in their device: applications take longer to open, interface animation MIUI begins to “slow down,” and in some cases the phone even overheats for no apparent reason. In 90% of cases, this is caused by a full cache temporary files that the system and applications accumulate to speed up repeated operations.

Clearing the cache on Redmi Note 7 is not just a way to free up a few gigabytes of memory, but a full-fledged optimization procedure that can return the device to “out of the box” performance. But here it is important to understand the difference between cache types: system cache, application cache and Dalvik cache require different approaches, and their incorrect cleaning can lead to malfunctions of MIUI. In this guide, we will look at all the methods - from standard tools MIUI 12/14 to hidden mode functions Recoverythat official documentation Xiaomi is often silent.

Why the cache accumulates and when it needs to be cleared

Cache (from English cache —“cache”) is buffer data that is created to speed up repeated access to information. For example, when you open the app for the first time Instagram, it loads your friends' avatars, story thumbnails, and interface elements into the cache. The next time you start, this data is loaded not from the Internet, but from the phone’s internal memory, which saves traffic and time. However, over time:

  • 📱 System cache (/cache) accumulates update data, log files and temporary files MIUIwhich can take up to 1–2 GB.
  • 🎮 Application cache (in /data/data) grows to hundreds of megabytes, especially in games like PUBG Mobile or Genshin Impact.
  • 🔄 Dalvik cache (in /data/dalvik-cache) stores optimized versions of applications for the virtual machine Android, and clearing it can speed up work after updates.

Signs that the cache requires clearing:

  • ⚡ The phone has become slower to respond to touches (delays when scrolling MIUI Launcher).
  • 🔥 Redmi Note 7 overheats during simple tasks (for example, in WhatsApp or browser).
  • 📉 Free memory decreases without installing new applications (check in Settings → Memory).
  • 🔄 Applications suddenly close or show the error “Not enough memory.”
⚠️ Attention: Do not confuse cache with user data! Clearing the cache will not delete your photos, messages or saves in games, but will reset temporary settings (for example, authorization in some applications).
📊 How often do you clear the cache on yours? smartphone?
Once a week
Once a month
Only when the phone is slow
Never cleared

Method 1: Clearing the cache of individual applications through the MIUI settings

The safest method is to delete the cache for specific applications. This does not affect system files and does not require a reboot. The instructions are relevant for MIUI 12, 13 and 14:

  1. Open Settings (gear icon on the desktop).
  2. Go to section Applications → Manage applications.
  3. Tap on the three dots in the upper right corner and select Sort by sizeto see the most “gluttonous” apps.
  4. Select an application (for example, Facebook or Google Chrome) and click Storage.
  5. Click Clear cache (not be confused with the button Clear data —it will delete all application settings!).

For convenience, you can use a filter: in the top search bar, enter the name of the application (for example, telegram) to quickly find it in the list. Please note. pay attention to applications with a cache of more than 100 MB —cleaning them will give the maximum effect.

Close all background applications (swipe up in the multitasking menu)

Check the cache size in the section Storage cache

Do not clear the cache of system applications (for example, MIUI Security or Google Services)

Reboot your phone after clearing 5+ apps-->

Application Typical cache size Recommendation for cleaning
Google Chrome 150–500 MB Clear once every 1–2 weeks
Facebook 300–800 MB Clean weekly
PUBG Mobile 1–2 GB Clean after major updates
Instagram 200–400 MB Clean when tape scrolling slows down
MIUI Gallery 50–200 MB Clear only when there is insufficient memory
⚠️ Attention: Some applications (for example, Netflix or Spotifyafter clearing the cache will take longer to load content the next time you launch it. This is normal. temporarily.

Method 2: Clearing the entire application cache at once

If you are too lazy to clear the cache for each application individually, MIUI there is a mass clearing function. It deletes temporary files. all user applications, but does not affect the system cache. How to do it:

  1. Open Settings → Memory.
  2. Tap on the item Storage & Performance (or Clear at the bottom of the screen).
  3. Wait for analysis (may take 10-30 seconds).
  4. Click Clear cache (usually this is the button with indicating the volume, for example, “Clear 1.2 GB”)

This method is convenient, but has disadvantages:

  • ❌ Does not clear the cache of system applications (for example, MIUI Home or Settings).
  • ❌ Can delete useful data (for example, offline maps in Google Maps).
  • ✅ But it quickly frees up space and speeds up the operation of most applications.
💡

After mass clearing the cache, reboot your phone - this will help MIUI correctly rebuild temporary files for frequently used ones applications.

Method 3: Clearing the system cache via Recovery Mode

The system cache (/cache) accumulates update data MIUI, error logs and temporary kernel files Android. can solve problems with system crashes or errors like "UI system has stopped" mode. However, to do this you will need to go to the Recovery:

  1. Turn off Redmi Note 7 (hold down the power button and select Turn off).
  2. Press simultaneously Power button + Volume up and hold for 5-10 seconds until the logo appears Mi.
  3. Release the buttons - you will be taken to the menu Recovery (in English or Chinese).
  4. Use the volume buttons to navigate and the power button to select an item Wipe & Reset → Wipe Cache.
  5. Confirm the action by selecting Yes and wait for completion (takes 1-2 minutes).
  6. Select Reboot → Reboot to System to reboot.

This method not). deletes resets the settings of some system functions (for example, the allowed number of notifications for applications may be reset after clearing the system cache:

  • 🔄 First boot MIUI may take 10-20 seconds longer than usual.
  • 📱 Some system applications (for example MIUI Camera) may request permissions again.
  • ⚡ Temporary errors like “The com.android.phone process has stopped”.
⚠️ Attention: In the menu Recovery there is also an item Wipe Data (full reset). Never select itif you don’t want to lose all the data on your phone!
What to do if Recovery Mode is in Chinese?

If the Recovery menu is displayed in Chinese, focus on the location of the items:

1. The first item is reboot (do not select).

2. The second point is Wipe Data (DANGER!).

3. The third point is Wipe Cache (we need).

4. The last item is shutdown.

Use the power button to select.

Method 4: Clearing the Dalvik cache to speed up operation

Dalvik cache - these are optimized files for the virtual machine Android, which are created when installing or updating applications. Clearing it is useful if:

  • 🐢 The phone became slower after the update MIUI.
  • 🔄 Applications often crash with an error “The application is not responding”.
  • 📦 You have deleted many applications, but the free memory has not increased.

To clear the Dalvik cache you will need Recovery Mode with extended rights (for example, TWRP). If you have a standard MI Recovery, this method will not work. Instructions for TWRP:

  1. Boot into TWRP (similar to standard Recovery, but with hold Volume up + Power longer than 10 seconds).
  2. In the main menu, select Advanced → Wipe Dalvik Cache.
  3. Swipe to confirm (slider Swipe to Wipe).
  4. After cleaning, tap Reboot System.

After reboot MIUI will automatically restore the Dalvik cache, but this may take 5-10 minutes (depending on number of installed applications). During this period, the phone may:

  • 🔥 Heat up more than usual.
  • 🐢 Slow down when launching applications for the first time.
  • 📴 Reboot 1-2 times (this is normal).
💡

Cleaning Dalvik cache is especially useful after manually updating the firmware via Fastboot or installing custom modules Magisk.

Method 5: Automatically clearing the cache using MIUI Optimizer

MIUI has a built-in optimization tool that can automatically clear the cache and manage background processes. activate:

  1. Open Settings → About phone.
  2. Tap 7-10 times on the line Version MIUIuntil the message “You have become a developer!” appears.
  3. Return to the main menu Settings and open a new section Advanced → For developers.
  4. Find the option Optimizing MIUI (or MIUI Optimization) and enable it.
  5. Go to Settings → Memory → Auto Clean and set up a schedule (for example, “Every week”).

Advantages of this method:

  • ✅ Cleaning occurs in the background without your participation.
  • ✅ The system analyzes which applications can be optimized without loss of performance.
  • ❌ Minus: not all versions MIUI support this function (the option may not be available on some firmware).
⚠️ Attention: If after turning on MIUI Optimization the phone begins to overheat, disable it - on some devices this function conflicts with energy-saving settings.

Method 6: Radical cleaning - reset to factory settings

If all the previous methods did not help, and Redmi Note 7 still works unstable, the last resort is Hard Reset (full reset). This method deletes all data, including applications, settings and files, so use it only as a last resort. Preparation:

  • 🔄 Back up important data (photos, contacts, messages) via Settings → Advanced → Backup and reset.
  • 📱 Make sure the phone is charged at least 50% (resetting when the charge is low can lead to a brick).
  • 🔐 Remember your account details Mi Account — After the reset, authorization will be required to unlock.

Reset instructions:

  1. Open Settings → Advanced → Backup and reset.
  2. Select Reset settings (or Wipe All Data to Recovery).
  3. Enter the pattern or PIN code to confirm.
  4. Wait for completion (takes 5-10 minutes).

After the reset:

  • 📱 The phone will reboot to the “out of the box” state.
  • 🔄 When you turn it on for the first time, follow the setup wizard MIUI.
  • 📲 Restore the data from the backup (if you did it via Mi Cloud).
💡

If after resetting the phone still slows down, check the battery status in the engineering menu (##4636##A worn-out battery can cause artificial performance limitations.

Common errors when clearing the cache and how to avoid them

Many users Redmi Note 7 make mistakes that, instead of speeding up the phone, lead to new problems:

Error Consequences How to avoid
Clearing the system application cache. (for example, Google Play Services) Failures Play Market, synchronization errors Do not touch applications with an icon Android or MIUI
Clearing the Dalvik cache without TWRP The phone will hang at boot (bootloop) Use only proven recovery menus
Cleaning interrupted at Recovery Partition damage /cache, errors during loading Do not turn off the phone until the message appears Success
Frequently clear the cache (daily) Applications take longer to load, increased traffic consumption Clear the cache no more than once every 2 weeks

Another typical problem - the cache is not cleared despite all efforts. Reasons:

  • 🔒 The application has administrator rights (check in Settings → Passwords and Security → Administrator rights).
  • 📁 The cache is stored on the SD card (disable it before cleaning).
  • 🔄 The system blocked cleaning due to active processes (reboot the phone and try again).

FAQ: Answers to common questions questions

Is it possible to clear the cache without losing data?

Yes, clearing the cache (via Settings → Memory or Recovery) does not affect user files. However, resetting to factory settings (Hard Reset) will delete everything, including photos and applications.

Why did the phone slow down even more after clearing the cache?

This is a temporary phenomenon: after clearing the Dalvik cache or system cache MIUI rebuilds optimized files. Wait 10-15 minutes - performance will be restored. If the brakes remain, check the free space in the section Settings → Memory (should be at least 1-2 GB).

How to clear the cache for all users (if there are several on the phone) profiles)?

In MIUI there is no built-in mass cache clearing function for several users. You will have to:

  1. Switch to each profile manually (swipe on the notification panel → user icon).
  2. In each profile, repeat the clearing via Settings → Memory.

For the system cache (Recovery), cleaning occurs globally for all users.

Is it safe to use applications to clear the cache (for example, data-i="318">No, such applications often delete not only the cache, but also useful data, and also show false warnings about “viruses”. Clean Master)?

No, such applications often delete not only the cache, but also useful data, and also show false warnings about “viruses”. Xiaomi does not recommend using them. Instead, use built-in tools MIUI:

  • Settings → Memory → Cleaning
  • Security → Garbage cleaning (built-in scanner MIUI)
How to check how much cache a specific application takes?

Open Settings → Applications → Application management, select the desired application and tap on StorageThere will be. indicated:

  • Application memory — APK file weight.
  • User data —your settings and files.
  • Cache —temporary files (these are the ones that can be safely cleared).