Xiaomi’s Redmi line of smartphones is famous for their performance, but even the most powerful device can start to work slower over time. Accumulation of system debris, application conflicts or errors in the MIUI operating system are the main reasons why users have to think about radical measures.
The process of a complete reset, or Hard Reset, removes all user information, so it needs to be approached with full responsibility. Owners of the Redmi Note 9 model often face the need to clear the memory before selling a device or after a failed firmware update. It is important to understand the difference between a software reset through settings and a hardware reset through the recovery menu.
In this article, we will discuss in detail all available methods of cleaning memory on the Xiaomi Redmi Note 9. We will look at the standard tools of the Android operating system, the hidden features of the Recovery Mode menu, as well as ways to forcefully reboot if the smartphone screen does not respond to touch.
Preparing the device for a complete data reset
Before you start the process of erasure, you need to perform a number of preparatory steps that will protect your personal files. The most critical mistake is to start Hard Reset without prior backup. All photos, contacts, correspondence in messengers and installed applications will be irretrievably deleted from the internal memory of the device.
It is recommended to use cloud services such as Google Drive or Xiaomi Cloud to save the most important data. It is also worth checking the battery level: the battery must be filled by at least 50-60% so that the process does not interrupt halfway due to discharge.
Be sure to unplug accounts if you plan to transfer your phone to another person, including logging out of your Google and Mi Account so that the new owner doesn’t ask for a password from the old owner (FRP protection feature), a standard Android security measure that locks the device when resetting without first logging out.
☑️ Checklist before reset
Method 1: Reset via system settings (Soft Reset)
The easiest and safest way to bring the Xiaomi Redmi Note 9 back to factory status is to use the built-in settings menu, which is ideal if the operating system is stable, the screen is touch-responsive, and you have access to the desktop. The algorithm of actions is simplified by the developers as much as possible MIUI user-friendly.
To start, go to Settings, then go down to About Phone, where you will need to find the Reset button or Erase all data, the system will warn you that all files will be deleted, and ask you to enter the unlock password or pattern lock to confirm the operation.
Once confirmed, the cleaning process will begin, which can take 5 to 15 minutes depending on the amount of memory filled. The phone will automatically restart several times. Don't be afraid if the screen goes out and turns on - this is the usual behavior when reinstalling Android system files.
It is important to note that some versions of the firmware may have slightly different paths, sometimes the reset item is placed in a separate menu Additional or located in the Advanced Settings section. If you can't find the right item, search by settings by entering the "reset" or "reset" request.
Method 2: Recovery Mode (Hard Reset)
If the smartphone is frozen, does not turn on or does not respond to touching the screen, the only way out is to use the Recovery Mode recovery menu. This mode works independently of the main operating system and allows you to perform low-level operations with the file system. To enter this mode on the Redmi Note 9 uses a combination of physical buttons.
Turn the device off completely. Then simultaneously press the Volume Up and Power button. Hold them until the Mi logo appears, and then the power button can be released, continuing to hold the volume button until the main Recovery menu appears, and this is controlled by volume buttons, and the power button selects.
From the menu that opens, select the language (usually English and Chinese only) and then go to Wipe Data. From the next menu, select the Wipe All Data option and confirm the action by selecting Confirm. After you complete the process, click Back to Main Menu and select Reboot -> Reboot to System.
⚠️ Note: When resetting via Recovery Mode, data is deleted without recovery, even through specialized software. Make sure you really want to erase all the memory contents.
What happens if the Recovery Mode does not open?
Comparison of discharge methods and their features
The choice between software and hardware resets depends on the current state of your Redmi Note 9. Both methods result in the same result – a complete cleanup of the user partition, but the ways to achieve the goal and the risks are different.
Software resetting through settings is less traumatic for the system, as it passes routine checks and can correctly complete background processes before deleting. Hardware reset via Recovery acts more aggressively and forcefully, which is necessary in cases of critical failures.
| Comparison parameter | Through Settings (Soft) | Through Recovery (Hard) |
|---|---|---|
| Availability | Requires a working screen and OS | It works even with a brick system. |
| Difficulty | Low (automated) | Medium (requires precision of action) |
| Risk of error | Minimum | Medium (human factor) |
| Implementation time | 10-20 minutes. | 5-10 minutes |
And you have to consider that after any type of reset, the system will be booting longer than usual, because Android is re-optimizing apps and creating cache. Don't try to speed this up with reboots, let the phone finish quietly.
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Use reset via settings if the system is stable; only go to Recovery Mode in case of major crashes or locking the screen.
Solution: post-discharge problems
After the Xiaomi Redmi Note 9 has successfully restarted, the user may face a number of standard situations, most often questions are caused by a request for a Google account, this is the FRP (Factory Reset Protection) protection mechanism that prevents the use of a stolen phone, you will necessarily need to enter the username and password from the account that was synchronized with the device before the reset.
Another common problem is that you don't have a network or Wi-Fi. After you reset, all your network connection settings go back to factory settings, you may need to re-enter your router password or check your mobile operator's APN settings, and sometimes just turning on and off flight mode helps.
- 📉 Fast discharge: In the first hours after reset, the system indexes files, which can temporarily increase battery consumption.
- 📱 Touchscreen: If the screen reacts with a delay after reset, try calibrating or checking system updates.
- 🔒 Blocking: If you forget the password from your Mi Account, you can only restore access through the official Xiaomi website.
In rare cases, the phone can go into a cyclic bootloop. If this happens, the only solution is to flash the device through the computer using the Mi Flash utility and downloaded factory firmware. However, for the Redmi Note 9, such cases are more the exception than the rule.
Optimizing the Redmi Note 9 after reset
A clean system is a great start, but to make the Redmi Note 9 work as efficiently as possible, you need to set it up properly from scratch. Don't rush to restore all applications from backup at once. Better install them incrementally, tracking each one's impact on performance and autonomy.
Be sure to check for updates for MIUI. Often newer firmware versions contain security bug fixes and optimize the Snapdragon processor installed in this model. Go to Settings -> About Phone and click on the system version to check.
Also pay attention to the battery settings. From the Battery and Performance menu, choose Balanced or Classic mode. Unlimited mode can cause excessive heating, and Economy mode can limit the background operation of the desired applications.
⚠️ Warning: Do not install "acceleration" or "cooling" applications from untested sources. MIUI They manage memory much more efficiently than third-party utilities.
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After resetting and installing updates, let the phone lie on charge for about an hour in the off state - this will help the power controller calibrate the battery readings.