How to Unlock Xiaomi Redmi 9T: from PIN-code to the Mi Account (Step-by-step)

Xiaomi Redmi 9T is one of the most popular budget smartphones, but even it is not immune to locks. Forgot the pattern lock? Phone requires a password from the Mi Account after reset? or even hangs on the screen This device is locked asking you to enter the data of the previous owner? In this article, all the current ways of unlocking, including bypassing FRP protection, reset via Fastboot and working with Mi Unlock Tool.

It is important to understand that the methods differ depending on the type of lock:

• 🔒 Screen lock (PIN, pattern lock, password)
• 📱 Mi Account (requires data from previous owner)
• 🔧 Bootloader (official unlock through Xiaomi)
• 🚫 FRP (Factory Reset Protection (post-reset protection)

We won’t offer you magic software or paid services, only working methods with proven performance on MIUI 12/13/14. But remember, some operations will lead to complete data cleanup (photos, contacts, messages). If the phone is not synced to the cloud, it will be impossible to recover information.

1. unlock the screen without losing data (if you know the Mi Account)

If you've just forgotten. PIN-code or pattern lock, but remember the data from the Mi Account associated with the device -- this is the way for you. 9T s MIUI 12.5+ and does not require discharge.

Algorithm of action:

1. On the lock screen, enter the wrong password 5 times in a row.
2. Will you see a message Forgot your password? – click on it.
3. Select the option to Sign in via your Mi Account.
4. Enter the login and password from the linked account.
5. Follow the system instructions to create a new lock password.

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If the Forgot Password button doesn’t appear, try connecting your phone to Wi-Fi or mobile network – sometimes the feature requires an active internet connection.

Limitations of the method:

• ❌ It doesn’t work if your phone isn’t tied to your Mi Account.
• ❌ It won’t help if two-factor authentication is enabled and there is no backup code access.
• ❌ Some firmware may require confirmation of SMS (if the number is attached).

⚠️ Warning: If you bought your phone with your hands and the previous owner didn't untie your account, this method won't work. FRP.

2.Reset via Recovery Mode (complete data cleanup)

If you lose access to your Mi Account or your phone is blocked after a bad firmware, you only have to hard-dump, which will delete all the data, but it will return access to the device, and it's suitable for Redmi 9T on any version of MIUI.

Step-by-step:

1. Turn off the phone (press the Power + Volume Up for 10 seconds).
2. Press the Power + Volume Up at the same time and hold until the Mi logo appears.
3. From the Recovery menu, select the language (usually English).
4. Go to Wipe Data → Wipe All Data.
5. Confirm the action with a swipe or a choice of Confirm.
6. After reset, select Reboot → Reboot to System.

Turn off the phone from charging

Make sure the battery is at least 30% charged

Prepare. SIM-post-reset activation card

Remember your Google account details (required for setting up)

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What to do if the phone asks for a Mi Account after a reset?

This means that FRP (Factory Reset Protection) has been activated. Go to the FRP bypass section.

Factory Reset Protection (FRP) on Xiaomi 9T

If the phone requires you to enter the previous owner’s Mi Account details after resetting via Recovery, you will need to bypass FRP. On Redmi 9T, this can be done in two ways: via Fastboot or using the Mi Assistant utility.

Method 1: Fastboot (PC required)

Tools required:

• 🖥️ Windows computer 10/11
• 🔌 Cable USB (preferably original)
• 📦 Archive with Mi Flash Tool and ADB/Fastboot

Instructions:

1. Turn off your phone and press Volume Down + Power to log in to Fastboot.
2. Connect the device to the PC.
3. Open the command line in the folder with ADB and execute: fastboot oem unlock-go If the command doesn’t work, try: fastboot flashing unlock
4. After successful execution, the phone will restart in clean condition.

Method 2: Mi Assistant (without PC)

If you don’t have a computer, you can try bypassing FRP with Emergency Call mode:

1. On the lock screen, press Emergency Call.
2. Enter ##4636## (the test menu will open).
3. Go to Usage statistics → Back (on some firmwares, the path may be different).
4. Return to the main screen and open Settings → Accounts.
5. Delete your attached Mi Account and reboot your phone.

⚠️ Emergency Call Method Does Not Work on All Versions MIUI. If nothing happens after entering the code, use the method with Fastboot.

4. Official unlocking of the bootloader (Bootloader)

If you see this device is locked when you try to flash your phone through Fastboot, it's locked up. It can only be unlocked officially through the Mi Unlock Tool.

What you need:

• 🖥️ Windows PC
• 🔗 Mi Account tied to phone (required)
• 📱 Phone with a charge of at least 60%
• 🔌 Original. USB-cable

Step-by-step:

1. Download the Mi Unlock Tool and install it on PC.
2. Turn on the developer options on the phone (7 times click on the MIUI version in the settings).
3. Activate USB Debugging and OEM Unlock in the Developer Menu.
4. Turn off your phone and press Volume Down + Power to log in to Fastboot.
5. Connect the device to your PC and start the Mi Unlock Tool.
6. Sign in to your Mi Account (should match the one tied to your phone!).
7. Press Unlock and wait until the process is complete (usually 10-15 minutes).

💡

Unlocking the bootloader through the Mi Unlock Tool can take up to 720 hours (30 days) on new accounts. If you see a timer, wait for the specified time and try again.

Frequent mistakes and decisions:

• ❌ Couldn't unlock - check that your Mi Account is linked to your phone and synced.
• ❌ Device Not Connected – Try Another USB-cable.
• ❌ Account not bound means the phone is tied to another account. FRP (see previous section).

5 Unlocking through service codes (hidden functions)

The Xiaomi Redmi 9T has several service codes that can help unlock without resetting. They don’t work on all firmware, but it’s worth a try.

List of useful codes:

• 🔓 ##7780## - Reset settings (without deleting data).
• 🔄 ##4636## - Testing menu can help you bypass FRP).
• 📱 ##284## - Sensor test (sometimes allows you to unlock the screen).
• 🔋 ##4636## → Battery information - battery data (helps with "perpetual charging").

How to use:

1. Open the Phone app.
2. Enter one of the codes as a phone number.
3. If the code works, follow the instructions on the screen.

⚠️ Note: ##7780## and #7378423## may cause a partial reset. Application data (photos, videos) is usually left, but settings and accounts are deleted.

6. Alternative methods (if nothing helps)

If standard methods don't work, there are alternative solutions that take longer and sometimes special equipment, but can save the brick.

Method 1: Firmware via EDL (Emergency Download Mode)

This is the last resort that is used if the phone is not switched on or locked at the bootloader level.

• 🖥️ PC with Qualcomm drivers installed
• 📦 Firmware for Redmi 9T (You can download the Xiaomi Firmware Updater)
• 🔧 Mi Flash Tool or QFil
• 🔌 Cable USB Type-C with support EDL (Ordinary might not work)

Instructions:

1. Transfer the phone to EDL (closing contacts on the board or through ADB).
2. Connect to a PC – the device should be defined as Qualcomm HS-USB QDLoader 9008.
3. Start the Mi Flash Tool, select the firmware and press Flash.
4. Wait until the end (10-20 minutes).

Method 2: Contacting a service center

If you are not sure about your skills or the phone is locked at the level of hardware protection (for example, after a failed firmware), it is better to contact the official Xiaomi service.

Advantages of the service center:

• ✅ Work guarantee
• ✅ Maintenance of the official guarantee (if applicable)
• ✅ Data recovery (in some cases)

Disadvantages:

FAQ: Frequent questions about unlocking Xiaomi 9T