Xiaomi Redmi 9 reset to factory settings: 3 working methods + error solving

Why Redmi 9 might be needed and what it does

Resetting the Xiaomi Redmi 9 to factory settings is a radical but effective way to restore performance or eliminate critical errors. The procedure completely clears the device’s internal memory of user data, applications and settings, returning it to a “out of the box” state.

First, if the phone is slowing down after a year of active use, cache accumulation, memory fragmentation and background processes from dozens of applications can turn even a powerful Redmi 9 into a brick. Secondly, a reset is necessary before selling or transferring the device to another person - this is a guarantee that your personal data (photos, messages, passwords) will not fall into the wrong hands. Third, the procedure helps with system failures: endless reboots, MIUI errors or the inability to update the firmware.

But it's important to understand that a factory reset is not a panacea; it won't fix hardware problems like a broken screen or a broken battery, or it won't make a phone with a damaged motherboard work again, and you'll have to reset Redmi 9 after you reset, like you did after you bought it, you'll connect your Xiaomi account, restore contacts, and install apps. If you're not ready, consider alternatives like cleaning your cache manually or flashing it over Fastboot.

Ready to Reset: What to Do to Avoid Losing Important Data

The main mistake users make is to start a reset without backing up, and even if you plan to sell your phone, keep copies of important files in case the procedure doesn't go as planned.

• 📱 Sync your contacts and calendar with your Google or Xiaomi account. Go to Settings → Accounts. → Sync and make sure all data is uploaded to the cloud.
• 📁 Copy photos and videos to a computer or external drive. Use a wired connection (file transfer mode) or cloud services like Google Photos.
• 🔑 Save passwords from your browser and apps. If you use Mi Account, check if password sync is enabled in Settings. → Passwords and security.
• 🎮 Export game data if you play cloud-saving projects (e.g., through Google Play Games or a developer account).

Pay special attention to applications with two-factor authentication (such as Telegram, WhatsApp or banking services). Once reset, you will need access to SMS or backup codes to restore accounts. Unlock Redmi 9 from critical services in advance or save backup codes in a safe place.

⚠️ Note: If the phone is enabled with the function Protection of Xiaomi device (in Settings) → Lock and protect, and when reset, you need to enter the password from the Mi Account that was linked to the device, and without that, the phone will become a brick"!

Method 1: Reset via the settings menu (if the phone is working)

This is the safest and easiest method to use if Redmi is a 9 It turns on, it reacts to touch, and you have access to the menu. MIUI, including MIUI 12/13/14:

1. Open Settings (the gear icon on the main screen).
2. Scroll down and select About Phone.
3. Slip on Reset (in some versions of MIUI it may be called Reset and Reset).
4. Select Erase all data (reset to factory settings).
5. If requested PIN-code or pattern lock, enter it.
6. Confirm the action by clicking Erase All (or Delete All).

The phone will automatically restart and start the cleaning process, which will take 5 to 15 minutes. Upon completion, you will see the screen of the initial setup, as after purchase. If at this stage Redmi 9 requires you to enter your Mi Account data, use the same credentials that were tied before the reset.

Backup checked|Battery charge > 50%|All off. SIM-memory-card|Password from Mi Account (if linked)|Exit from Google and Social Media Accounts-->

⚠️ Warning: If after a reset, the phone asks for a Mi Account account, but you do not remember it, do not try to enter data at random. After 5 unsuccessful attempts, the device will lock for 24 hours.

Method 2: Reset via Recovery Mode (if the phone is not turned on or locked)

If Redmi 9 doesn’t respond to touch, hangs on the logo, or is locked with a pattern lock you forgot, Recovery Mode resets can help, even on dead phones if they are somehow showing signs of life (vibrating, lighting up the screen).

Instructions for Redmi 9 (including Redmi 9A/9C/9T models):

1. Turn off the phone with a long press on the power button (if it does not turn off, press the button for 10-15 seconds).
2. Press the Power Button + Volume Up Button at the same time and hold them for 10-15 seconds until the Mi logo appears.
3. Release the buttons when you see the Recovery Mode menu (black screen with yellow text in English or Chinese).
4. Use the volume buttons for navigation and the power button for selection. Select Wipe Data (or Clear Data).
5. Confirm the action by selecting Wipe All Data (or Confirm).
6. Once completed, select Reboot (or Reboot to System) to reboot.

If the Recovery menu is in Chinese, look for the location of the items: (Wipe Data) is the third item on top, (Reboot) is the last one.

Method 3: Fastboot Reset (for power users)

If the first two methods fail (e.g., Recovery is corrupted or the phone only loads in Fastboot mode), you can reset via a computer, which requires the installation of ADB/Fastboot drivers and basic command line knowledge.

You'll need:

• 💻 Windows computer (or Mac/Linux fixed ADB)
• 🔌 Cable USB Type-C (preferably original)
• 📥 Utility 15 Seconds ADB Installer for installing drivers
• 🔧 Archives from Google Platform Tools

Step-by-step:

1. Install ADB/Fastboot drivers on your computer (via 15 Seconds ADB Installer).
2. Unpack Platform Tools in the C:\platform-tools folder.
3. Turn off Redmi 9 and press the Power button + Volume Down to enter Fastboot Mode (the image of a hare in a hat-eared will appear).
4. Connect your phone to your computer and open the Command Prompt in the platform-tools folder (click Shift + right mouse button → Open the PowerShell window here).
5. Enter the command to check the connection: fastboot devices If the device is determined (the serial number will appear), continue. If not, reinstall the drivers.
6. Run the reset command: fastboot erase userdata fastboot erase cache fastboot reboot

After the reboot, the phone will be reset to factory settings. This method bypasses the Mi Account lock, but does not work on devices with a locked bootloader. If after the fastboot oem device-info command you see Device unlocked: false, you will need to unlock the bootloader separately (instructions on the Xiaomi website).

1. Use another. USB-port (preferably) USB 2.0 on the back of the PC).

2. disable driver signatures in Windows (to do this, type in the command line on behalf of the administrator: bcdedit /set nointegritychecks on).

3. restart the computer and phone, then reconnect.-->

Frequent Redmi 9 Reset Mistakes and How to Avoid Them

Even when following the instructions, users encounter problems, and here are the most common mistakes and solutions:

• 🔄 "The phone hangs on the Mi logo after the reset, meaning the firmware is damaged, and flashing through the Fastboot or Mi Flash Tool will help.

If Redmi 9 is worse after reset (for example, it discharges faster or overheats), check:

• Have you got any viruses installed (scan your phone through Google Play Protect or Malwarebytes).

💡

If the phone is "lagging" after reset, don't be quick to blame the hardware. Most often the problem is in the background MIUI processes. Turn off autoloading unnecessary applications to Settings → Apps → Autostart and clear the cache to Settings → Storage → Cleanup.

What to do after resetting: initial setup and optimization

When Redmi 9 finally boots up after resetting, you'll be greeted by the original setup wizard. Here's what to do at this point:

1. Connect to Wi-Fi (don’t use mobile internet as updates and data recovery will eat up a lot of traffic).
2. Sign in to Google account – this will restore contacts, calendar and apps from the Play Market.

To optimize productivity:

• 🚀 Enable Performance Mode in Settings → Battery → Power modes (but note that this will reduce battery life).
• 🔋 Turn off Adaptive Brightness and set a fixed value (e.g. 60%) to save charge.
• 📶 B Settings → SIM-Maps and mobile networks select only 4G (if 5G not needed to reduce battery consumption.

If you notice that after a reset, the phone has become more quickly discharged, check the battery consumption in Settings → Battery → Battery Use. Often the culprits are Google Play Services or Miui Daemon – limit their activity in the background through Settings → Apps → Permissions → Autorun.

FAQ: Answers to Frequent Questions About Redmi 9 Reset