Cleaning RAM on Xiaomi Redmi Note 7: from built-in tools to hidden MIUI features

Why Redmi Note 7 is slowing down and how it relates to RAM

Your Xiaomi Redmi Note 7 has become slower to respond to touch, apps have long opened, and games slow down? 90% of the time, it is the fault of overloaded RAM. Despite the fact that the model was released with 3 or 4 GB of RAM (depending on the modification), over time, even this volume becomes insufficient, the reason is background processes, cached data and the features of MIUI, which aggressively reserves memory for system tasks.

Unlike flagship smartphones, budget models like the Redmi Note 7 don’t have hardware. Every megabyte of RAM counts: a Telegram launched with a dozen chats, Google Play Services background synchronization, weather widgets, and even the standard POCO Launcher launcher (if you installed one) all eat up precious RAM. In addition, MIUI by default limits automatic RAM cleaning to “keep apps state” for quick return to them. Paradox: a feature designed to speed up work often causes lags.

But don't rush to drop your phone to factory settings or buy a new one. We've put together 7 working ways to clean RAM, from basic to advanced, including hidden MIUI features that aren't written about in the official instructions. And we'll also see why cleaning RAM through Task Manager in Redmi Note 7 works differently than on other Android smartphones.

Method 1: Manually close applications through recent menus

The most obvious, but often underrated, method is that many users think that swiping up the app card in the recent menu completely shuts it down. Actually, no. MIUI leaves some of the processes in the background to speed up the re-start. To free up RAM completely, you need to do this:

• 📱 Press the square navigation button (or swipe upwards with a 0.5 second delay if you use gesture control).
• 🧹 At the bottom of the screen, you'll see a button called Clear Everything, tap it, and it will remove all background processes except system processes.
• 🔄 If there is no Clear everything button, swipe up each application card twice (the first swipe minimizes, the second removes from memory).

⚠️ Note: Some apps (such as WhatsApp or Viber) may not receive notifications of new messages until you open them again after such a closure. MIUI, battery-optimized.

Method 2: Task Manager and hidden Deep Cleanup function

MIUI has a built-in Task Manager that shows not only open applications, but also background processes that eat up RAM. However, few people know that it hides the option Deep Clean, which removes even those tasks that usually remain after a standard closure.

To take advantage of it:

1. Open Settings → Applications → Task Manager.
2. In the upper right corner, press three dots (⋮) and select Settings.
3. Activate the Deep Clean switch.
4. Return to the task list and click Clean – all background processes will now be removed, including the cache of system applications.

💡 Useful tip: After deep cleaning, restart your smartphone. MIUI Reassemble the cache of applications without unnecessary load on RAM.

Save important data from the clipboard

Close all active calls or broadcasts

Connect to charge (recommended at <20 percent battery level)

Turn off the mobile internet (to avoid interrupting background downloads)

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Method 3: Limiting Background Application Activity

Many applications continue to run in the background even after closing, consuming RAM and battery power. MIUI has a tool to limit this activity, but it's hidden in an obscure place. Here's how to use it:

1. Go to Settings → Battery and Performance → Battery Management.
2. Select Applications Selection (in some versions of MIUI, this option is called Battery Optimization).
3. In the list, find applications that actively use RAM (for example, Facebook, Instagram, instant messengers).
4. For each tap, limit background activity.

⚠️ Attention: Restricting background activity for instant messengers (Telegram, WhatsApp) can cause notifications to be delayed. If you are critical of receiving messages on time, remove them from the list of restrictions.

Method 4: Using the Performance Mode

Xiaomi Redmi Note 7 has a hidden performance mode that prioritizes the release of RAM by reducing animations and background processes.

1. Open the Settings. → The phone.
2. Tap 5-7 times on the MIUI version until you get a message You became a developer!
3. Go back to the basic settings and select a new item for developers.
4. Find the Performance Mode option and activate it.

🔧 Technical detail: In this mode MIUI It releases RAM more aggressively, but it can reboot applications more often when switching between them. For example, if you listen to music on Spotify and switch to the browser, the player can “unload” from memory.

Method 5: Update MIUI to the latest version

Older versions of MIUI (especially MIUI 10 and below) had memory management issues that were patched in later updates, such as MIUI 12.5 adding Dynamic RAM Distribution, which automatically optimizes memory based on load.

To update:

1. Go to Settings → About the phone → System update.
2. Click Check for updates.
3. If you have a new version, download it and install it. Importantly, before upgrading, make sure that the battery is at least 50% charged and that the phone has 2-3 GB of free space in its memory.

⚠️ Note: If your Redmi Note 7 is purchased in China (the domestic version), updates may come with a delay or require manual installation via Fastboot. 4PDA).

💡

Updating MIUI is the only way to get fixes for hardware limitations of RAM that cannot be solved software (for example, memory leaks in older versions of the Android kernel).

Method 6: Reset partition cache (without data loss)

If previous methods didn’t work, try resetting the partition cache.This won’t delete your files or apps, but will clear temporary system data, which can take up to 1-1.5GB of RAM in the background.

1. Turn off the phone.
2. Press the Power and Volume buttons simultaneously until the Mi logo and Recovery menu appear.
3. Use volume buttons to navigate and select Wipe Cache Partition.
4. Confirm the action and wait for the process to be completed.
5. Reboot your phone (Reboot System Now)

📌 Important: After the cache is reset, it can take up to 5-10 minutes for the first phone to start, which is normal!

💡

If the phone started to work faster after the cache was reset, but after a day or two it started to slow again - the problem is in a particular application.

Method 7: Advanced Cleaning through ADB (for power users)

If you're willing to go beyond standard methods, you can manually kill unnecessary processes through the ADB (Android Debug Bridge), which requires connecting the phone to a computer, but gives you complete control over RAM.

Instructions:

1. Install. ADB-Drivers on PC (you can download from the site) XDA Developers).
2. Turn on the phone Debugging over USB (Settings → About Phone → MIUI version → 7 taps → For developers → Debugging over USB).
3. Connect the Redmi Note 7 to your computer and type in the command line:

adb shell


su




cmd appops set com.miui.securitycenter android:persistent_activity BACKGROUND

This command disables background activity for the MIUI Security Center, one of the main RAM eaters. For other applications, replace com.miui.securitycenter with their batch names (you can find out through the App Inspector in the Play Market).

⚠️ Attention: Misuse of the right ADB Do not kill processes called android., media. or surfaceflinger - these are critical system services.

FAQ: Frequent questions about cleaning RAM on the Redmi Note 7