Despite their age, the Redmi Note 7 series remains popular due to their excellent price-performance ratio. However, over time, owners notice that the interface begins to slow down and applications open longer than usual, often due to a lack of free RAM, which is filled with background processes and cache.
In MIUI, memory management mechanisms work differently than in Android. Simply closing applications doesn’t always work as well as keeping them in the background for quick start-up. In this article, we’ll look at effective ways to free up the device’s resources.
You can use both built-in tools and special features for developers. It's important to understand that a complete RAM cleanup isn't always helpful, but in critical situations it's the only way to reanimate the gadget. Let's look at a step-by-step algorithm of actions.
Use of a standard MIUI cleaner
The easiest and most affordable method that doesn’t require third-party software is the built-in Security app, which is pre-installed on all Xiaomi devices and has direct access to system resources. Run the app and you’ll see a circular indicator showing your current system boot.
Click on the Cleanup button or the circle itself. The system will force the background processes that are not critical to the OS. However, it is worth noting that MIUI has an aggressive policy of returning applications to memory, so after a few minutes after cleaning the memory can be refilled.
⚠️ Warning: Do not use Accelerate constantly. Frequent forced downloading of applications from memory causes the Snapdragon 660 processor to waste more power on their re-run, which reduces the autonomy of the processor.
For a deeper cleaning, go to Clean Up Inside the App, where you can delete temporary files that also take up space in the clipboard when you're in active use, and doing this routine regularly helps keep the interface running smoothly.
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For quick access to the cleanup, add the Security widget to your desktop, which will free up memory in one tap without opening the settings menu.
Set up extended memory through the developer menu
Owners of a version with 3 GB or 4 GB of RAM often face limitations. MIUI has a useful feature that allows you to limit the number of background processes. To activate this mode, you need to access a hidden settings menu.
Go to Settings → About Phone. Find the MIUI Version bar and quickly click on it 7-10 times in a row. You will be notified, "You've become a developer," and then a new Developer option will appear in the Advanced Settings section.
Inside the menu, find the Apps section and select the Background Process Limit. The default is "Standard Limit"; you can change this value by selecting "No More than 2 Processes" or "No More than 3 Processes."
What is the limitation of processes?
The changes take effect immediately, and now that you run a heavy game or a navigator, the system will not hold a dozen social networks in memory, which will significantly reduce the load on the processor and memory.
Managing Auto-Run and Application Permissions
One of the main reasons for RAM bloating is uncontrolled auto-start, and many apps, especially those of Chinese origin, prescribe themselves to auto-boot to constantly hang in the background and collect data or display ads.
To control this process, go back to the Security app. At the bottom of the screen, find the gear icon or go to the Permissions section. Find AutoRun. Here you will see a list of all the programs that start with the phone.
- 🚫 Turn off auto-run for all social media and instant messengers you don’t use all the time.
- 🛑 Avoid playing in the background for games and media players, they should not hang in your memory when you are not using them.
- ✅ Leave only system services and important notifications (calls, messages) enabled).
Also, check Other Permissions → Run in the background to make sure that suspicious or rarely used utilities are not activated, which will help save resources for really important tasks.
☑️ Auto-start check
Analysis of memory consumption by heavy applications
Not all applications affect the system equally. Some programs, especially those with heavy interfaces or built-in advertising, can consume disproportionately many resources even when folded. In Redmi Note 7, it is important to keep an eye on such “eaters”.
Go to Settings → About Phone → Memory (or through the developer menu Memory Use) and it shows a graph and a list of applications sorted by RAM consumption. If you see a program you rarely use but it takes hundreds of megabytes, it’s a signal to action.
| Annex | Type of load | Recommendation |
|---|---|---|
| Facebook / Instagram | High (background services) | Use the Lite version or the web version |
| Navigators (Yandex, Google) | Medium (GPS + Network) | Close immediately after use |
| Games (PUBG, CoD) | Very high. | Cleaning up memory before launch |
| Messengers | Low/Mediocre | Leave in autorun for notifications |
Often, removing a heavy app and installing a lighter app helps, such as Facebook Lite, which consumes significantly less memory than a standard client while maintaining basic functionality.
Cleaning the cache and removing system debris
While the cache is designed to speed up applications, overgrowth can lead to errors and slowing down data access. MIUI has a built-in cleaning mechanism, but sometimes manual intervention is required.
Go to Settings → Apps → All apps. Choose an app that takes up a lot of space (like YouTube or Telegram). Click Memory and select Clear Cache. It is important not to confuse it with the Clear Everything button, as this will reset authorization and settings.
For deeper cleaning, you can use Recovery mode, but this requires caution. The average user can clean up completely once a week through the Safety menu, choosing all categories of garbage.
⚠️ Warning: Don't use third-party accelerators from the Play Market. They often consume more memory than they free up and show intrusive advertising. Xiaomi's built-in tools are quite enough.
Regularly cleaning your browser cache is also important, especially if you are actively using web versions of social networks. In Chrome or MI Browser, this is done through history or privacy settings.
Radical measures: Resetting and updating
If none of the methods worked and the phone continues to brake even after cleaning, it may be the file system fragmentation or software errors after multiple updates, in which case the factory reset helps.
Before doing this, make sure to back up your data to the MI Cloud or your computer. Go to Settings → About Phone → Reset → Erase all data. This will put RAM back in the “out of the box” state.
Also check for system updates. Xiaomi periodically releases optimization patches for older models. Go to Settings → About phone and click on the MIUI version to check for updates.
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Hard Reset is the most effective way to clear memory and speed up the Redmi Note 7 if the software methods have failed.
After reset, don't install all the applications at once, set only the minimum and observe the behavior of the system, which will help identify the specific application causing the memory leak.