The Xiaomi Redmi 9C is one of the most popular budget smartphones, but even it eventually starts to slow down, glitches or requires a complete cleaning before selling.Resetting to factory settings solves most software problems, but many users are afraid of losing data or doing something wrong. In this article, three proven ways to reset the Redmi 9C (including a locked phone), step-by-step photo instructions, and answers to frequent questions about data recovery and errors.
We will not only analyze the standard reset via settings, but also methods for cases when the phone is not turned on, the pattern lock or password is forgotten, and we will focus on saving important files before reset and solving typical problems after the procedure (for example, if Redmi 9C does not load or asks for a Mi Account).
1. When do I need a factory reset?
Resetting is a last resort, but sometimes it is necessary. Here are 5 reasons why Redmi 9C users resort to this procedure:
- ๐ข The phone brakes heavily or overheats constantly - even after cleaning the cache and removing unnecessary apps.
- ๐ Forgot the pattern lock, PIN-Lock screen code or password (unless the Mi Account is tied).
- ๐ฑ Smartphone infected with viruses or shows suspicious activity (advertising, spontaneous installation of applications).
- ๐ Before selling or transferring a phone to another person โ to delete all personal data.
- ๐ ๏ธ After a failed update MIUI, when the system is not working properly (departures, application errors).
However, resetting does not always solve hardware problems, such as if the Redmi 9C is not turned on due to a damaged battery or the touchscreen does not work after a fall, in which cases repair is required.
โ ๏ธ Warning: If you reset your phone due to viruses, do not restore data from the backup after the procedure - this can return malware. Install apps only from the official Google Play.
2.Reset preparation: how not to lose important data
The factory reset completely removes all data from Redmi 9Cโs internal memory, including:
- ๐ธ Photos and videos (including screenshots and downloads from messengers).
- ๐ฑ Contacts, messages SMS/MMS, call-up.
- ๐ต Music, documents, uploaded files.
- ๐ฎ Save games and customize applications.
To avoid losses, follow 3 mandatory steps:
- Sync contacts and calendar with your Google or Mi Account: Go to Settings โ Accounts โ Google and enable sync for the data you want. Contacts can also be exported to a.vcf file via the Contacts app.
- Copy files to your computer or cloud: Connect Redmi 9C to your PC via USB (in file transfer mode) and transfer the DCIM (photo), Downloads (downloads), Documents folders. Alternatively, upload files to Google Drive, Mi Cloud or Yandex.Disk.
- Save backup of applications (optional): In Settings โ System โ Backup, you can create a backup of settings and some applications, but do not restore it after reset if the cause is viruses or system errors.
Synchronize your contacts with Google|Copy photos and videos on PC|Export SMS (if necessary)|Write down Mi Account data (logins/passwords)|Turn off the factory lock (if the phone is sold)-->
Important: If the Redmi 9C has FRP enabled, the phone will require data from the last Mi Account tied after the reset.
3. Method 1: Reset via the settings menu (if the phone is working)
This is the easiest and safest method if you have access to the Redmi system. 9C. The instructions are relevant to MIUI 12/13/14:
- Open the settings (cog icon on the desktop).
- Go to the About Phone section (usually at the bottom of the list).
- Tap 5-7 times on the MIUI version to activate the developer mode (not necessary for resetting, but useful for future settings).
- Return to the main settings and select Additional โ Reset settings.
- Click to erase all data (reset).
- Enter. PIN-code or password (if requested).
- Confirm the action by pressing Erase Everything.
The phone will reboot and start the cleaning process, which will take 3-10 minutes, and when you're done, you'll see the screen of the initial setup, just like after you've bought it.
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If the menu does not have the option โReset settingsโ, try the alternative path: Settings โ Memory โ Cleanup โ Reset to factory settings.
Method 2: Recovery Mode (if the phone is locked or not turned on)
If Redmi 9C doesnโt respond to touch, your password is forgotten, or your system doesnโt boot, Recovery will help, which works even on a phone thatโs turned off, but requires you to follow the instructions exactly.
Step 1. Turn off the phone (press the power button for 10 seconds if it freezes).
Step 2. Press the button combination:
- ๐ The Volume Up button (Volume Up) + power button).
- Hold them for 10-15 seconds until the Mi logo and Recovery menu appear.
Step 3. Recovery menu:
- Use volume buttons for navigation and power button for selection.
- Select Wipe Data (or Wipe & Reset in newer versions).
- Confirm the action by selecting Wipe All Data.
- After cleaning, go back to the main menu and select Reboot โ Reboot to System.
If the menu is in Chinese, focus on the location of items (usually Wipe Data is the second or third on top).
โ ๏ธ Note: Some of the Redmi firmware 9C After resetting through Recovery, you may have a "No command" error with the Android robot lying down. + Volume Up for 10 seconds to reboot the menu.
What happens if Recovery does not open?
5. Method 3: Fastboot Reset (for power users)
This method is suitable if:
- ๐ง Recovery Mode is unavailable or damaged.
- ๐ฑ The phone does not respond to buttons, but is determined by the computer.
- ๐ ๏ธ You need to reflash the device after a failed update.
To reset via Fastboot, you will need:
- ๐ป Computer with drivers installed ADB/Fastboot (You can download from Xiaomi or Mi Flash Tool).
- ๐ USB-cable (preferably original).
- ๐ Firmware archive for Redmi 9C (If you need not only reset, but also reinstallation MIUI).
Instructions:
- Turn off the Redmi 9C.
- Press Volume Down + Power to enter Fastboot mode (the image of a hare in a hat-eared hat will appear).
- Connect the phone to the PC.
- Open the command line (Win + R โ cmd) and type: fastboot devices If the device is determined (its serial number will appear), run the reset command: fastboot erase userdata fastboot erase cache fastboot reboot
This method completely cleans the partition with user data, but does not affect the system files. If you need to reinstall MIUI, after reset, sew the phone through the Mi Flash Tool.
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Fastboot reset is the most radical method, and only use it if the first two methods fail or require a deep cleaning.
Possible errors after discharge and their solutions
Even after a successful Redmi 9C reset, there may be problems, and the table below shows frequent errors and ways to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| Phone asks for Mi Account after reset | Factory lock (FRP) activated | Enter the last account you linked, and if you don't remember, contact Xiaomi with proof of ownership. |
| The smartphone does not turn on after reset (black screen) | Failed cleaning or damaged firmware | Try going to Recovery and repeat the reset. If it doesn't work, run your phone through Fastboot. |
| It is constantly restarted (bootloop) | Conflict of system files | Perform a reset via Fastboot or re-flash the device |
| The touchscreen or buttons are not working. | Hardware malfunction | Contact the service center - resetting here will not help |
| No net after reset | IMEI settings are down. | Check IMEI in Settings โ About Phone. If not, restore it via the engineering menu (#4636##) |
If the Redmi 9C is slower than before the procedure, try:
- ๐งน Clear the cache in Recovery (wipe cache item).
- ๐ Update MIUI last-minute.
- ๐ ๏ธ Reset the settings again (sometimes double cleaning helps).
7.How to recover data after reset
If you haven't backed up, the chances of returning deleted files depend on whether you've sent new data to your phone after the reset, and if you haven't, you can try recovery software:
- ๐ป PC: DiskDigger, Recuva, EaseUS Data Recovery (plug in Redmi) 9C file transfer mode).
- ๐ฑ For Android: Dumpster, GT Recovery (set on your phone immediately after resetting).
Important: The less you use your phone after a reset, the better the chances of recovery. Don't install new apps or copy files!
To restore contacts and messages, check:
- ๐ง Archives SMS Google account (if sync is enabled).
- ๐ฑ Backups to Mi Cloud (if an account was linked).
- ๐ฌ Exporting messages in instant messengers (for example, WhatsApp backups are stored in the /sdcard/WhatsApp/Databases).
โ ๏ธ Note: Recover data from Redmi's internal memory 9C If files were critical, contact a specialized laboratory (for example, Hetri or Ace Lab), but it is expensive and not always effective.