Cleaning up RAM on Xiaomi Redmi Note 8T: the full guide

The Xiaomi Redmi Note 8T, with its 3/4GB of RAM, often faces slowdowns, especially after a year of active use. Apps start to fly out, animation slows down, and multitasking turns into torture. Not only is it low RAM, but MIUI, which aggressively caches data, features 7 proven methods for cleaning RAM, including hidden firmware features and secure, rootless workarounds.

It's important to understand that cleaning RAM doesn't always solve the problem of lag. If the phone slows down due to a worn-out battery (capacity below 70%) or overheating of the processor (Snapdragon 665 in the Note 8T is prone to trottling), then freeing up memory will have a temporary effect. We'll analyze how to distinguish "clogged" RAM from hardware problems and what to do in each case.

Why Redmi Note 8T brakes: RAM vs. other reasons

Before you clean your memory, make sure it’s the problem.The Redmi Note 8T can slow down for several reasons:

• 📱 Lack of RAM: MIUI The default limits background processes, but some apps (like Facebook or TikTok) bypass these restrictions.
• 🔋 Battery wear: With capacity below 75%, the processor automatically reduces performance to save charge.
• 🔥 Overheating: Snapdragon 665 begins to thrott at temperatures above 45°C, which leads to jerks in games and applications.
• 🗑️ Cluttered internal memory: If less than 10% of the total is free, the system slows down.

To check the RAM loading:

1. Open Settings → About the phone → System status.
2. Click on Memory (or Use of RAM depending on the MIUI version).
3. If it is less than 300-400 MB free in normal use, the memory is overloaded.

If there is enough free memory but the brakes remain, the problem may lie in the background activity of applications, for example, MIUI by default allows dozens of services to autorun, which consume resources even in the background.

Method 1: Manual cleaning through the “Recently used” menu

The easiest method is to close all background apps manually. On the Redmi Note 8T, this is done via the multitasking button:

1. Click the square button at the bottom of the screen (or swipe up and hold your finger on the gesture-controlled screens).
2. Scroll the list of open applications left/right.
3. Click on the cross in the upper right corner of each window or swipe upwards through each application.
4. At the bottom of the screen will appear the button Clean everything – press it to close all processes.

This method frees up to 50-70% of RAM, but has drawbacks:

• ❌ Applications will reboot the next time they open, which can take a few seconds.
• ❌ Some system processes (e.g. com.miui.home) will restart automatically.

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If the multitasking button doesn’t respond, try holding it for 2-3 seconds, which will force you to open the menu on some versions of MIUI.

For a deeper cleanup, go to Settings → Applications → Application Management and manually stop unnecessary services (e.g. Mi Video, Mi Music, if you don’t use them).

Method 2: Automatically cleansing with Security App

MIUI has a built-in memory optimization tool called Security, which not only cleans RAM, but also removes cache, temporary files, and blocks auto-runs of unnecessary applications.

Instructions:

1. Open the Security app (the shield icon).
2. Click on Optimization (or Acceleration in new versions).
3. Wait for the scan (usually takes 5-10 seconds).
4. Press Clean or Accelerate.

What this tool does:

Open the Security Appendix»|Run the scan.|Press "Clear»|Check the list of blocked auto-starts|Reboot the phone (optional)-->

After cleaning, it is recommended to restart the phone - this will reset all temporary processes and give the maximum increase in productivity.

Method 3: Disabling Autostart and Background Activity

Many apps on the Redmi Note 8T run automatically and consume RAM even when you’re not using them. For example, Facebook can store up to 5 background processes, and Mi Push Service constantly surveys Xiaomi servers.

How to turn off autostart:

1. Go to Settings → Applications → Application Management.
2. Select an app (such as Facebook).
3. Press Autostart and turn off the slider.
4. Go back and press Permissions → Autostart → Disable.

For mass blackout:

1. Open Security → Optimization → Auto Start.
2. Click on the three dots in the top right corner and select AutoStart Control.
3. Sort apps by last use date and disable auto-runs for those that haven’t been used for more than a month.

After disabling autorun, some applications will start slower when first opened, but will not “hang” in memory constantly.

Method 4: Using the Lite Mode

MIUI has a hidden “Light” mode that optimizes the system for weak devices. It turns off animations, reduces RAM consumption and limits background processes. This mode is especially useful for the Redmi Note 8T with 3 GB of RAM.

How to turn on:

1. Open the Settings. → Special facilities.
2. Scroll down and find Lite Mode (or Simplified Mode).
3. Turn on the slider and restart the phone.

What's changing in this mode:

• 🎨 All animations of transitions between screens are turned off.
• 🔄 The number of background processes is limited to 2-3.
• 📱 Simplified interface (large icons, fewer elements on the screen).
• 🔋 Reduces energy consumption by reducing processor frequency.

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Light mode can increase battery life by 10-15%, but some features (such as live wallpaper or unlock effects) will become unavailable.

If you don't have enough functionality after you turn on this mode, you can return the standard interface by turning off Lite Mode in the settings, but for maximum performance, it's recommended to leave it on.

Method 5: Clean RAM through an engineering menu (for advanced)

For power users, there's a way to force the memory cleaner through an engineering menu, which doesn't require root rights, but the wrong actions can cause failures.

Instructions:

1. Open the phone app and enter the combination: ##4636##
2. In the menu that opens, select Battery Information (or Usage Statistics).
3. Click on the three dots in the top right corner and select Clear Statistics.
4. Go back and select Use Statistics → Clear the cache.

What this team does:

• Resets battery and processor usage statistics.
• Forcedly closes “hung” processes that do not respond to standard cleaning.
• Clears the cache of system services (for example, media.server or surfaceflinger).

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If nothing happens after you enter the code, try using an alternative combination: ##284## (sensor test) → then go back and repeat the steps.

This method is more aggressive than standard cleaning and can help if the phone is “hanging” on the boot screen or slowing down after an upgrade.

Method 6: Reset partition cache (without data loss)

If previous methods didn’t work, try resetting the partition cache, which will delete temporary system files that may take up RAM and slow down, and user data (photos, contacts, messages) is not affected.

How to do this:

1. Turn off the phone.
2. Press the Power and Volume buttons up at the same time until the Mi logo appears.
3. From the Recovery menu, select Wipe & Reset (use volume buttons for navigation and power button for confirmation).
4. Select Wipe Cache and confirm the action.
5. After completion, select Reboot.

This method helps in cases where:

• 🐢 The phone stopped after the update. MIUI.
• 🔄 Applications are spontaneously closed or restarted.
• 📱 In the task manager, it is clear that RAM is occupied by unknown processes (system_server, zygote).

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Resetting the partition cache does not delete personal data, but it can reset some settings (such as permissions for apps or background wallpaper).

If the problem persists after this procedure, a full reset to factory settings may be required (but this is an extreme measure, since all data is deleted).

Method 7: Optimize with Third Party Apps (with Care!)

Google Play has hundreds of RAM cleaning apps, but most are either useless or harmful. Many "optimizers" consume memory themselves, showing false notifications of "critical" RAM loading.

If you still want to use third-party software, choose proven options:

How to use Greenify (the best option for Redmi Note 8T)

1. Install the app from Google Play.
2. Provide access to special features (Settings → Special features → Greenify).
3. Add to the hibernation list resource-intensive applications (for example, Facebook, Messenger).
4. Enable the option Aggressive hibernation (root required for full effect).

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If you don’t have root rights, Greenify will still help, but you’ll have to manually “sleep” apps through a widget on the home screen.

Avoid “optimizers” like Clean Master or DU Speed Booster – they often show false warnings and consume RAM themselves.

Frequent errors when cleaning RAM on the Redmi Note 8T

Many users compound the problems by trying to "optimize" the phone in the wrong ways.

• ❌ Use task killer: Apps like Advanced Task Killer force processes to close, which leads to automatic restarts and even more workloads. CPU.
• ❌ Disable system services: Deactivating Google Play Services or Miui Daemon could disrupt your phone.
• ❌ Clean RAM too often: Android is designed to use all the memory available. Empty RAM is inefficient, because the system will have to re-download data when you open applications.
• ❌ Delete cache manually through file manager: This can cause app crashes (e.g. WhatsApp will stop showing preview photos).

If after all the manipulations the phone continues to brake, check:

• 🔋 Battery status (capacity can be checked in Settings) → Battery. → Battery status).
• 🌡️ Processor Temperature (use the app) CPU Monitor).
• 📦 Free space on the internal drive (should be at least 3-5 GB).

FAQ: Answers to Frequent Questions