How to reset Xiaomi M2004J19AG to factory settings: all ways + nuances

Xiaomi M2004J19AG

Redmi 9C

Redmi 9A

Reset to factory settings

In this article, you will find all the current ways to reset for the M2004J19AG: through the settings menu, using physical buttons (Hard Reset), as well as nuances for devices with an unlocked bootloader or custom firmware, we will analyze when to choose a particular method, how to prepare for the procedure and what to do if the smartphone does not respond to standard commands.

If your Redmi 9C/9A is stuck on the logo, doesn’t turn on or requires a password after a failed update, there are solutions here, too. And for those who are afraid of losing important data, we’ve added tips for backup and recovery after a reset.

1.Resetting preparation: what to do before the start

Factory reset is the complete removal of all data from the device, including photos, contacts, messages and installed applications. Before you start, make sure you keep everything important.

Here is the mandatory checklist before resetting:

Backup in Mi Cloud or on PC

Record the username/password from the Mi Account (required after reset)

Check the battery (minimum 50%)

Delete your Google Account (if you plan to sell your phone)

Get out. SD-map SIM-cards (optional)-->

Pay special attention to your Xiaomi account. After a reset, your phone will require you to enter the Mi Account that was tied to your device. If you forget your password, restore it in advance on the official account.xiaomi.com website. Otherwise, you risk getting a “locked after reset” smartphone that you will have to unlock through support.

If you drop your phone before selling, be sure to untie all accounts:

• 📱 Mi Account: Settings → Xiaomi account → Get out.
• 🔑 Google Account: Settings → Accounts. → Google → Delete the account
• 💳 Bank cards on Google Pay/Mi Pay

💡

If you are selling a phone, take a photo of the IMEI (printed on the box or available by command *#06#) and the serial number, which will help avoid problems with activation by the new owner.

2. Method 1: Reset via the settings menu (soft reset)

This is the easiest and safest method if the phone turns on and reacts to touch, suitable for eliminating software glitches, cleaning before selling or after viruses.

Step-by-step:

1. Open Settings (the gear icon on the main screen).
2. Go to About Phone (or Additional → Recovery and Reset in older versions of MIUI).
3. Select Settings Reset.
4. Click Delete all data (entry may be required) PIN-code-key).
5. Confirm the action by clicking Reset the phone.

It takes 5-10 minutes, and after you reboot, you'll see the initial setup screen, like after you buy it, and if your phone requires a password from your Mi Account, enter your associated account.

3. Method 2: Hard Reset via Recovery Mode (buttons)

This method will be useful if:

• 🔄 The phone is stuck on the logo or not loading.
• 🔒 You forgot the pattern lock./PIN-code.
• 🛠️ Reset the device without access to the menu.

For the Xiaomi M2004J19AG (Redmi 9C/9A), the button combination is standard, but there are nuances:

1. Turn off the phone (press the power button for 10-15 seconds if it freezes).
2. Press the volume button (+) and the power button at the same time.
3. Hold them until the Mi logo appears, then let them go.
4. You'll be taken to the Recovery Mode menu. Use volume buttons for navigation and power button for selection.
5. Select Wipe Data → Wipe All Data → Confirm the action.
6. After completion, select Reboot.

If the menu is in Chinese, focus on the icons:

• 🧹 — This is Wipe Data.
• 🔄 — It's Reboot.

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Some firmware after Hard Reset may require you to re-activate your Mi Account even if you untie it. That's OK, just enter your associated account details.

4. Method 3: Reset via Fastboot (for advanced)

This method is suitable if:

• 🔧 Recovery Mode is unavailable or damaged.
• 📱 The phone does not respond to buttons, but is determined by the computer.
• 🛠️ You want to flash the device after resetting.

The work will require:

• 💻 A computer with installed Xiaomi drivers and ADB/Fastboot.
• 🔌 Cable USB Type-C (original or quality).
• 📄 Firmware file (if you plan to re-flash).

Instructions:

1. Turn off the phone.
2. Press the volume down button (-) and the power button, hold until the screen Fastboot (robot labeled Fastboot).
3. Connect the phone to the PC.
4. Open the command prompt (cmd) and type: fastboot devices Make sure the device is identified (serial number should appear).
5. Run the reset command: fastboot erase userdata fastboot erase cache fastboot reboot

⚠️ Note: Fastboot erase commands will completely delete data from the userdata partition (including internal memory).If you are not sure about your actions, use Method 1 or 2.

5. Frequent post-reset problems and their solutions

Even after a successful reset, there can be difficulties, and here are the most common ways to eliminate them:

If the phone does not detect after the reset SIM-The map probably came off. IMEI. To restore it:

1. Enter the dialer: ##4636##.
2. Go to the phone information.
3. Check the IMEI – if it is missing or appears as Null, you will need to firmware the NVRAM module.

Yeah, through the settings menu.

Yes, through Hard Reset.

No, I never did.

I tried it, but there were problems.-->

6.How to recover data after reset

If you have not made a backup, the chances of returning the data depend on what type of reset was performed:

• 📱 Soft Reset (via menu): data is deleted logically and can be restored using programs like Dr.Fone or EaseUS MobiSaver (provided that no new files are written to the phone).
• 🔧 Hard Reset or Fastboot: Data deleted at low level, recovery unlikely.

For recovery via PC:

1. Connect the phone to the computer.
2. Install a recovery program (e.g. Tenorshare UltData).
3. Select the file type (photos, messages, contacts) and start the scan.
4. Save the data found on the PC.

⚠️ Note: Do not install recovery software on the phone itself after a reset – this will overwrite deleted data and make it impossible to restore it.

If you need contacts or SMS, check:

• 🌐 Google Contacts (Sync automatically if an account has been linked).
• 📧 Email – many instant messengers (e.g. Telegram) save their history on servers.

7.Dumping before sale: additional security measures

If you reset the Xiaomi M2004J19AG before selling, it's not enough to just return the factory settings.

• 🔐 Unlock all devices in Mi Account (go to i.mi.com) → Device management).
• 📍 Remove geodata from Google Timeline (if you use Google Maps).
• 💳 Remove bank cards from Google Pay, Mi Pay, Samsung Pay (if tied).
• 📱 Erase data from SD-Cards (if it was on the phone).

We also recommend:

1. Log out of all accounts in apps (such as WhatsApp, Viber, Instagram).
2. Delete files from cloud storage (Mi Cloud, Google Drive) if they are synced automatically.
3. Take a picture of the serial number and IMEI for the new owner (this will help avoid activation issues).

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Before transferring your phone to a new owner, turn on Demo mode (if available in your version of MIUI). This hides personal data and shows the phone in "show" mode. Activates via Settings → About Phone → Demo mode (on some firmware).

FAQ: Answers to Frequent Questions