Unlocking Xiaomi Redmi 9C: from screen to bootloader (Step-by-step)

Xiaomi Redmi 9C — One of the most popular budget smartphones, but even it's not immune to accidental locking. PIN-code three times in a row, linking to a Mi Account after a reset or a blocked bootloader – all these situations require different approaches. In this article, we will discuss 5 working ways to unlock, including official tools from Xiaomi and workarounds for power users.

It's important to understand that the methods vary in complexity and consequences. For example, a Recovery reset will delete all data, and unlocking the bootloader will require a wait of 72-360 hours. We will describe each step in detail, specify the risks and give recommendations on how to avoid re-blocking. If you are not sure about your actions, you should contact the service center.

1. unlock the screen without loss of data (if the Smart Lock is enabled)

If the Redmi 9C has Smart Lock activated (in the security settings), you can bypass the lock without resetting.

• 🔑 The smartphone is tied to a trusted device (such as a smartwatch or a speaker)
• 📍 Included a trusted place (such as a home or work)
• 👤 Face/voice recognition configured

To use the Smart Lock:

1. Bring your smartphone to a trusted device (if tied over Bluetooth).
2. Or go to a trusted location (geolocation must be enabled).
3. On the lock screen will appear the icon Smart Lock – tap it.
4. Enter a backup PIN (if requested).

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If Smart Lock doesn’t work, check if geolocation is enabled in Settings → Privacy → Permits → Geodata. Without it, the feature won’t work.

⚠️ Note: If you haven't set up your Smart Lock beforehand, this method won't help.

2. Reset the pattern lock/PIN via Mi Account (official method)

If the Redmi 9C has a Mi Account attached, you can reset the screen lock via Xiaomi’s website, which only works if:

• 📱 The phone is connected to the Internet (Wi-Fi or mobile data).
• 🔄 The device is synchronized with Mi Cloud.
• 🔐 Remember the username and password from the Mi Account.

Instructions:

1. Go to the Mi Account website and log in.
2. Select the Devices tab → find your Redmi 9C.
3. Press Find the device. → Unlock the screen.
4. Confirm the action via SMS or email.
5. Wait for the notification on your phone and follow the instructions.

Check your Internet connection | Make sure your phone is synced with Mi Cloud|Prepair your username/password from Mi Account|Prepare email/SMS to confirm

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⚠️ Note: If the phone is disabled Mi Cloud or the Internet is not available, this method will not work, and Xiaomi can request proof of identity (passport photo) if the device was purchased less than 30 days ago.

3. Hard reset via Recovery Mode (will delete all data)

If previous methods didn't work, it's a factory reset, which will delete all the data, including photos, contacts and apps, but unlock the phone. On Redmi 9C, it uses Recovery Mode.

Step-by-step:

1. Turn off the phone (press the power button for 10 seconds).
2. Press Volume Up + Power at the same time and hold for 10-15 seconds until the Mi logo appears.
3. Release the buttons – you will be taken to the Recovery menu (management is carried out by the volume and power buttons).
4. Select Wipe Data → Wipe All Data → Confirm your choice.
5. After reset, select Reboot → Reboot to System.

⚠️ Warning: After the reset, the phone will require you to enter data from the Mi Account that was previously tied (protection) FRP). If you don't remember your account, you'll have to use a bypass. FRP (section).

Reset via Recovery|Unlocking with Mi Account|Smart Lock|Bypass FRP|Never blocked your phone.-->

4. Unlock bootloader on Redmi 9C

If you want to flash custom software (like LineageOS) or get root rights, you will need to unlock the bootloader. Xiaomi officially allows this, but the process takes 3 to 15 days of waiting (depending on company policy).

Instructions:

1. Download the Mi Unlock Tool on PC.
2. Sign in to the program under the same Mi Account as on the phone.
3. On your phone, go to Settings → About Phone → MIUI version and tap 7 times to activate Developer Mode.
4. Back to Settings → Additionally. → For developers and include: 🔧 Debugging by USB 🔓 Unlocking OEM

Mi Unlock Tool

Wait 72/168/360 hours

⚠️ Warning: Unlocking the bootloader resets the phone to factory settings and may take away warranties. L1 for Netflix HD) They may stop working.

💡

Waiting 72-360 hours is not a bug, but a security measure from Xiaomi, and it is impossible to speed up the process, even through service centers.

FRP (Factory Reset Protection) bypass after discharge

If after reset via Recovery, the phone requires you to enter data from the Mi Account with which you were previously associated, and you do not remember them – this is the case. FRP-It can be bypassed, but the methods are informal and may violate Xiaomi's rules.

The Redmi 9C (powered by MIUI 12-14)

1. On the Mi Account entry screen, click Add Wi-Fi network.
2. Enter any text in the network name field, highlight it and select Share.
3. On the menu.-sharing Select Gmail (or another messenger if installed).
4. In the window that opens, click Add an account → Google.
5. Sign in to any Google Account (even if not linked to your phone).
6. Return to the lock screen – the Mi Account entry request will disappear.

⚠️ Note: This method may not work on new versions MIUI. If after the roundabout FRP phone stopped connecting to the mobile network or other errors occurred – reset via Recovery.

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If FRP bypassing doesn’t work, try connecting your phone to your PC and using tools like the Mi Account Bypass Tool (at your own risk).

6.Alternative methods: ADB and Fastboot

For power users, there are ways to unlock through ADB (Android Debug Bridge) or Fastboot.They require command line skills and can lead to a device blink if you make an error.

Method 1: Delete the lock file via ADB (works if USB debugging is enabled):

adb shell


su




rm /data/system/gesture.key




rm /data/system/password.key




reboot

Method 2: Fastboot firmware (if the phone is not turned on):

fastboot flash recovery twrp.img


fastboot boot twrp.img




fastboot erase userdata




fastboot reboot

⚠️ Note: These commands will delete all data and may disrupt the firmware. Use them only if other methods have failed and you understand the risks.

FAQ: Frequent questions about unlocking the Redmi 9C