Smartphones series Redmi 9A have earned popularity due to the affordable price and reliable battery, but over time owners often face slowdown of the interface. MIUI — the proprietary shell from Xiaomi — rich in features, but can be demanding resources of budget hardware. If your device began to “hang” when switching between applications or long to open menus, it does not always mean the need to buy a new gadget.
In most cases, the problem lies in accumulated software “garbage”, background processes or incorrect animation settings. Competent system optimization can return the Xiaomi Redmi 9A to its former agility without the use of complex technical manipulations.
Analysis of the causes of low productivity
Before we get into action, we need to understand what causes the lags. Budget processors like the MediaTek Helio G25 installed in this model are sensitive to overflowing of RAM. When free RAM becomes critically scarce, the system begins to actively use internal storage for data swaps, which significantly reduces the response speed.
A common cause of brakes is background processes that were not closed after use. Social networks and instant messengers tend to constantly update content, consuming traffic and CPU resources even when the screen is turned off. Also, you should consider the wear and tear of flash memory: when you fill the storage more than 85%, the speed of writing and reading data drops significantly.
And let's not forget about thermal throttling, because if a smartphone overheats, the system forces the processor to lower its frequency to prevent damage to components, which can be manifested in the form of friezes during games or video calls.
Cleaning up memory and removing system debris
The first and most effective step is to release internal storage. The MIUI shell has a powerful maintenance tool built in that allows you to safely remove the cache of applications and remnants of remote programs. To start the standard procedure, go to Settings → Memory and click the Clean button.
However, standard cleaning often leaves a deep cache in the Android/data and Android/obb folders. For more thorough cleaning, it is recommended to use a file manager, for example, Files by Google or the built-in Explorer. Deleting temporary messenger files (Telegram, WhatsApp) can free up several gigabytes of space, which is critical for speed.
⚠️ Note: When cleaning data folders manually, make sure you don’t delete game save files or important documents that haven’t been synced to the cloud.
Once the space is freed, the system can create new temporary files without fragmentation, especially for the type of memory used in Redmi 9A, which is highly dependent on free space.
☑️ Checklist for memory cleanup
Optimization of the interface and animation MIUI
Visual smoothness of the smartphone depends on the animation settings. By default, Android and MIUI have standard window transition times, which on budget screens with a frequency of 60 Hz can look like delays. Hiding these effects creates the illusion of faster operation of the device.
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 the notification “You became a developer” appears, go back to the main settings menu, select Additional → For developers.
In the list that opens, find the section related to drawing, you are interested in three parameters: "Window animation", "transition animation" and "Duration of animation." Change their value from the standard "1x" to "0.5x" or completely disable ("No animation"), which will make the interface response almost instantaneous.
Should I turn off the animation completely?
Background Process Management and Autoboot
Controlling which applications run with the system is key for devices with 2 or 3GB of RAM, and MIUI has a built-in mechanism to limit application activity that users often ignore, but it is essential for stability.
Go to Settings → Applications → All apps. Select a heavy app (like a social network or a game), click on “Saving Charge” and select “No Limits” only for programs that require instant notifications. For others, set “Restricting Background Activity” to prevent them from working in the background when you are not using them.
Also, check the Autostart section, disable the automatic start permission for all programs except messengers and alarm clocks, which will significantly reduce the load on the processor immediately after the screen is turned on.
- 🚀 Turn off auto-runs for stores and news aggregators – you don’t need them every second.
- 🔋 Use Flight mode in places with poor signal so that your phone doesn’t waste resources searching for the network.
- 📉 Close tabs in the browser if their number exceeds 5-7 piece.
Comparison of acceleration methods
Not all methods are equally effective for different use cases, and below is a table that will help you choose an optimization strategy based on your situation and level of knowledge of the technique.
| Method | Efficiency | Difficulty | Risk of data loss |
|---|---|---|---|
| Clearing the cache | Low/Mediocre | Minimum | No. |
| Cancel animations | Medium (visually) | Low. | No. |
| Reset to factory settings | Maximum | Medium | Total loss. |
| Removal of system applications | Tall. | Tall. | Possible (in case of error) |
As you can see from the table, the most radical but effective way is to completely reset, but it requires prior preparation and backup of all important contacts and photos.
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Before resetting, remove the microSD card if it is installed so that its contents are not accidentally formatted.
Radical measures: Resetting and reflashing
If software optimization has failed, consider returning to factory status: Factory Reset removes all user data, settings, and errors that have accumulated over time, often returning the phone to near-out-of-the-box speeds.
To perform the reset, go to Settings → About Phone → Settings Reset → Erase all data. The device will reboot and begin the cleanup process, which can take 5 to 15 minutes. Once turned on, you will need to reset your Wi-Fi and accounts.
⚠️ Warning: Make sure the battery level is at least 50% before starting reset. interruption of the process due to discharge can cause damage to system partitions.
More advanced users can stream the device through a computer using the Mi Flash Tool. Installing clean global firmware without excessive pre-installed software can greatly facilitate the system. However, this method requires unlocking the bootloader, which is officially possible only 7 days after the account is linked.
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A complete reset is the most effective way to fix software errors that cause brakes if other methods have not worked.