Xiaomi Redmi Note 7, released in early 2019, has long been considered a benchmark for the budget segment, offering users an impressive 48 MP camera and a powerful for its time Snapdragon 660 processor. However, like any electronic device, after several years of active use, owners can notice a decrease in performance, periodic twitching interface or long response applications. This is a natural process associated with the accumulation of system debris, updating heavy versions of Android and physical memory wear.
In this article, we will explore the non-obvious reasons why your Redmi Note 7 is starting to lag, and offer specific solutions, from simple settings to radical measures. You will learn how to properly clean the cache, which system functions are really worth turning off, and which settings can harm the stability of work. Competent optimization can give your gadget a second life, returning the former smoothness of work.
⚠️ Warning: Before performing any actions related to resetting or flashing, be sure to back up important data to a cloud service or computer so you don’t lose contacts and photos.
Analysis of the causes of slowing down of the system
The first step is to understand what is causing the CPU and RAM to work, and users often blame hardware for the fact that today’s applications require more resources than they were originally designed to sell. The MIUI system on the Redmi Note 7 is becoming increasingly rife with background processes that consume valuable megabytes of RAM.
One of the main reasons for the brake is the overflow of internal memory. When free space falls below 10-15%, the speed of writing and reading data on a flash drive critically decreases, which leads to even simple operations, like opening a gallery or typing, begin to be performed with a delay.
After updating the operating system, some older versions of applications may not work correctly, causing memory leaks. Xiaomi Redmi Note 7 has 3 or 4 GB of RAM depending on the modification, and this volume becomes small for modern “heavy” social networks and games.
Memory Cleanup and Storage Optimization
The most effective way to get back to speed is to free up disk space. Don’t rely on the built-in Security app alone, as it often doesn’t remove messenger cache, which can take up gigabytes. It’s recommended to manually check folders in the file manager, paying special attention to Android/data and DCIM directories, where deleted but not cleaned files accumulate.
You should also remove unused applications, and even if you don't use them, they can run background services and update, consuming traffic and resources, and in the storage settings, you can see which programs occupy the most space, and decide whether to delete or migrate data.
- 🗑️ Cache Clearing: Go to Settings → Memory and press "Clean", then select deep cleaning.
- 📸 Photo and Video: Move media files to a memory card or Google Photos cloud to unload the main drive.
- 💬 Messengers: In the Telegram and WhatsApp settings, find the Data and Memory section and clear the cache by deleting old video files.
It is important to understand the difference between deleting an application and cleaning its data. If you simply delete the program, its residual files may remain in the system.
☑️ Checklist for quick cleaning
Customization of animations and MIUI interface
The visuals of the MIUI shell often take the lion's share of the graphics accelerator's resources. If your Xiaomi Redmi Note 7 is hanging when switching between windows, it's worth scaling down the animations. It won't speed up the processor, but it will make the system's response visually more instantaneous, removing unnecessary delays when opening menus.
To access hidden settings, you need to activate the developer mode. → About the phone and quickly press 7 times on the item "Version" MIUI". After that, a new section “Advanced Settings” or “Additional” will appear in the menu, where you need to find “For developers".
Inside the developer menu, find the scaling options:
- The scale of the window animation.
- The scale of transition animation.
- The length of the animator.
Change the values from the standard 1x to 0.5x or completely disable animation. This is especially true for older versions of Android installed on the device. Also in this menu you can find the option of forced rendering via the GPU, but on the Redmi Note 7 with a Snapdragon 660 processor it is better not to touch, as this can cause the opposite effect.
⚠️ Warning: Do not force background processes to be disabled in the developer menu if you do not understand their purpose.This can disrupt system services and lead to constant reboots.
Should I use the Game Accelerator?
Managing Autoboot and Background Processes
Many apps tend to run with the operating system to open faster or notify. On the Redmi Note 7, this results in a critically small amount of free RAM 10 minutes after the smartphone is turned on.
MIUI has a built-in tool to manage this setting. Go to Security → Permissions → Auto Start. Here you will see a list of all the programs that start automatically. Leave only messengers (for messages to come) and system services on, and turn everything else off.
Also worth checking is the list of running applications. Open the menu of running tasks periodically and close heavy programs that you are not currently using, especially browsers with many tabs and navigators.
| Type of application | Recommendation | Impact on RAM |
|---|---|---|
| Messengers | Leave auto-start. | Average. |
| Social media. | Disable autostart | High. |
| Games | Disable autostart | Critical |
| Banking applications | Disable autostart | Low. |
Remember that full shutdown of applications (swipe up) is not always useful. Android is able to correctly manage memory, and frequent restart of heavy applications can consume more battery power and CPU time than their presence in the background.
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Use the "Lite" versions of apps if they are available. For example, Facebook Lite or Messenger Lite consume significantly less resources than their full counterparts.
Update the system and reset to factory settings
If software optimization methods don’t help, there may be file errors or conflicts in the system after multiple updates. Xiaomi Redmi Note 7 owners should check for official MIUI updates. Sometimes developers release patches that fix memory and power problems.
The radical, but often the only effective, method is a complete reset, which removes all data and returns the phone to the "out of the box" state. Before you do that, make sure to backup. Go to Settings → About Phone → Reset and select "Erase all data."
After reset, take your time to install all the applications at once, install only the necessary ones, and watch the system work for a few days, which will help to determine whether the lags are causing a particular application.
⚠️ Note: After resetting the system may work slowly during the first few months 30-60 It's a process of optimizing apps and cache. Don't panic and give your phone time.
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Full reset removes software debris and configuration conflicts, which in 90% of cases returns the old smartphone factory speed.
Hardware limitations and wear of components
The physical aspect of operation cannot be ignored. The Xiaomi Redmi Note 7 is not new and its components are aging, and the main one is the type of eMMC 5.1 memory, which degrades over time when you write and read actively, which manifests itself as a “freeze” interface.
Thermal throttling is also important. If the phone overheats frequently, the processor resets frequencies to cool down, and the device starts to brake terribly. Check the thermal paste status and the cleanness of the speakers/connectors. Dust inside the case interferes with normal heat transfer.
If the battery is swelling or keeps the charge for less than 4 hours in active mode, it can also cause unstable operation (voltage), which leads to unexpected lags, in which case the software methods are powerless - it requires a replacement of the battery.