Xiaomi Redmi Note: 5 Ways to Delete All Data Forever

Before selling, transferring for repair or after infection with a virus, owners of Xiaomi Redmi Note face the need to completely clean the device. But a standard reset through settings does not always delete data irrevocably - photos, messages and passwords can be restored using special software. In this article, we will analyze 5 proven methods, including hidden MIUI functions and low-level cleaning tools that are guaranteed to delete all information from internal memory.

Many users make the mistake of using only one method. For example, resetting via Settings → About Phone → Resetting leaves traces in the /data section that can be extracted through ADB or chip-off analysis. We will show how to combine methods for 100% cleanup, including removing data from service sections, the Google Services cache, and even traces of a Mi Account account that can lock the device after a reset.

Note: the procedures in this article are irreversible. Once they are done, it will be impossible to recover data - even in service centers. If you clean your phone before selling, make sure you keep backups of contacts, photos and documents to an external drive or to the cloud. For Redmi Note 10/11/12 models with MIUI 14+, some steps may differ - check the relevance of the instructions for your firmware version.

Before starting, check the battery charge - it should be at least 60%. interruption of the cleaning process due to discharge can lead to the inability to turn on the device without flashing through the Fastboot.

1. Standard reset via MIUI settings

The easiest, but least reliable way is to delete user data, but it leaves behind service information that can be recovered with programs like Dr.Fone or EaseUS MobiSaver, which is good if you hand over the phone to a trusted person and you just want to delete your personal files.

How to do this:

1. Open Settings → About the phone → Reset settings.
2. Choose to Erase All Data (not to be confused with Settings Reset – these are different options!).
3. Enter the password from your Mi Account if requested.
4. Confirm the action and wait for the reboot (it will take 5-15 minutes).

⚠️ Note: After this reset, the phone may require you to enter your previous Mi Account information when you first turn on.If you forget your username/password, use the methods in Section 4 or 5.

Installed applications and their data

Photos, videos and music in internal memory

SMS, call log and contacts (unless synced with Google)

Wi-Fi and Bluetooth settings

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This method does not remove:

• 📁 Files in a folder /MIUI/backup (backup).
• 🔑 Mi Account Data Linked to the Device.
• 📱 Updates to the firmware uploaded to /cache.
• 🔧 Find Device settings (if the function has been activated).

2.Right reset via Recovery Mode

Deeper cleaning than through settings: Removes all partitions except /system and /boot, making data recovery unlikely. Suitable for the Redmi Note 8/9/10 and newer. On older models (like the Redmi Note 5), the Recovery interface may be different.

Step-by-step:

1. Turn off the phone.
2. Press the Power button + Volume up for 10-15 seconds until the Mi logo appears.
3. From the Recovery menu, select the language (if available), then Wipe Data → Wipe All Data.
4. Confirm the action by swipe or press Yes.
5. After cleaning, select Reboot → Reboot to System.

⚠️ Attention: On some firmware MIUI (Wipe All Data may be called Format Data, in which case, after formatting, you will need to re-swipe the device through the Mi Flash Tool, as critical system files will be erased.

Advantages of the method:

• 🔄 Remove data from sections /data and /cache fully.
• 🔒 Bypasses Mi Account lock on some models (but not all!).
• ⚡ It works even if the phone is not turned on (hang on the logo).

3. Complete cleaning through Fastboot (for advanced)

The method for users who are preparing the phone for sale or want to securely delete all data, including service information.Requires an unlocked bootloader and a PC with ADB/Fastboot drivers installed.

What you need:

• 🖥️ Computer with Windows/Linux and installed Platform Tools.
• 🔌 Cable USB (preferably original).
• 📱 Unlocked bootloader (if not, read section 5).

Instructions:

1. Turn off your phone and press the Power button + Volume down to log into Fastboot Mode.
2. Connect the device to your PC and check the connection with the command: fastboot devices should appear serial number of the phone.
3. Run the full cleanup: fastboot erase boot fastboot erase system fastboot erase recovery fastboot erase data fastboot erase cache fastboot erase userdata
4. Reboot the device: fastboot reboot

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If the phone doesn't turn on after cleaning, run the stock firmware through the Mi Flash Tool. You can download the official ROM on the MIUI Downloads website.

⚠️ Attention: fastboot erase commands destroy all partitions, including system partitions, and once they run, the phone will become a brick until you sew a new firmware!

4 Delete your Mi Account before resetting

One of the most common problems after cleaning up the Xiaomi Redmi Note is requesting data from the previous Mi Account when you first turn on, which is because of the Find Device feature, which links the device to the account, and if you don't remove the link in advance, the new owner won't be able to use the phone.

How to untie your account before resetting:

1. Go to Settings → Xiaomi Account → Mi Cloud.
2. Select Delete Account (Password may be required).
3. Confirm the removal and wait for the synchronization (usually takes 1-2 minutes).
4. Turn off Find Device in Settings → Memory and Backups → Find Device.

If the phone is already cleaned and asks for the old account details:

• 🔧 Use the web version of Mi Account to remove your device from the list of attached gadgets.
• 📧 Contact Xiaomi Support (prepare a check or box to confirm ownership).
• 🔨 On models with unlocked bootloader - run the firmware through Fastboot (see section 3).

Yeah, I had to restore access.

I always unload my account in advance.

I don't know what that is.

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Important: Starting with MIUI 13, Xiaomi has tightened security policies. Now, deleting an account from a device may require confirmation via SMS or waiting 72 hours after unbundling.

5. Unlock the bootloader and complete flashing

The most radical, but also the most reliable way is to unlock the bootloader and flash the clean firmware through the Mi Flash Tool, which will delete all data, including:

• 📲 Information about previous owners.
• 🔐 Traces of your Mi Account (even if it was tied).
• 🦠 Viruses and malware embedded in system partitions.

Step-by-step:

1. Unlock the bootloader through the official Mi Unlock Tool (requires a Mi Account and wait 7-15 days for new devices).
2. Download the stock firmware for your model from MIUI Downloads (choose the Fastboot version).
3. Install the Mi Flash Tool on your PC and unpack the archive with the firmware.
4. Connect your phone in Fastboot mode and swipe through the firmware by selecting the Clean All option.

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Unlocking the bootloader resets all security settings, including Widevine L1 (reproduction-man HD-content Netflix/Disney+). After the procedure, the level of protection will be reduced to L3, And the quality of streaming will deteriorate.

⚠️ Note: On Redmi Note models 11/12 With Snapdragon processor, unlocking the bootloader can lead to loss of functions NFC and camera deterioration (due to lack of cryptographic keys in the firmware) before the procedure, check whether your model supports official unlock on the Mi Unlock site.

Alternative methods: encryption and physical destruction

If you are paranoid (or sell a phone with sensitive data), even a full flashing may not be enough, in which case you should use additional measures:

Method 1: Encryption before reset

• 🔐 Encrypt internal memory in Settings → Security → Encryption of the telephone.
• 🗝️ Set a complex password (at least 12 characters with numbers and special signs).
• 🧹 Reset with Recovery Mode (Section 2).

Once encrypted, the data will be deleted in encrypted form, making it almost impossible to recover.

Method 2: Filling memory with garbage

Before reset, fill the internal memory with large files (like 4K movies), and then clean it up. This will rewrite the memory sectors where your data was stored. You can use applications like Secure Delete (available on Google Play) to automate.

Method 3: Physical destruction (extreme case)

If the phone is faulty and you don’t plan to restore it, remove the memory chip (eMMC/UFS) and destroy it mechanically (e.g. by drilling a hole) and this will ensure that you can’t recover data, but it will make the device unusable.

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For Redmi Note models with microSD support (such as Note 9 Pro) before reset, remove the memory card. Formatting via your phone does not permanently erase data - use your computer and SD Card Formatter utility with Full (Overwrite) option.

FAQ: Frequent questions about the Xiaomi Redmi Note cleanup