Modern smartphones store a huge amount of personal information, from instant messengers to bank card data, so protecting access to the device becomes the number one priority. If you become the owner of the popular Redmi 9 model, the first step after turning on should be to create a reliable access key that will prevent unauthorized entry into the system. Many users neglect this stage or use standard factory settings, which makes the gadget vulnerable to attackers in the event of its loss or theft.
The procedure for changing the security code on the MIUI shell is implemented intuitively, but has its own nuances that you should know about in advance. Unlike some other manufacturers, Xiaomi security requires validating current data before installing new ones, which ensures that only the owner of the device can change the security settings. In this article, we will discuss in detail the algorithm for changing the password, and also consider methods for restoring access in situations where old code is forgotten or lost.
The security of your digital space depends on the complexity of the combinations used and the regularity of their updating. Changing your password is not just a formality, but a necessary preventive measure, especially if you suspect that someone may have seen you unlock the phone, or if the device has been in the hands of unauthorized people. Let's move on to the practical part and set up the protection of your Xiaomi correctly.
Basic security settings in MIUI
Before you start directly changing the digital code or the pattern lock, you need to understand where the access control tools are located in the system. The MIUI shell installed on Redmi 9 has a centralized settings section that is responsible for all security parameters, including screen lock, fingerprints and facial recognition. This section is accessed through the main settings menu, which can be found on the gear icon.
Inside the security menu, you'll find the Password and Security option, which is the gateway to all important security features. This is where the system stores the hashes of your current passwords and allows you to verify and replace them. It's important to note that to make changes to these settings, the system will always request proof of identity using an already active unlock method.
💡
Use complex passwords containing letters of different registers and numbers to make it as difficult as possible for attackers to select the code.
It’s also worth mentioning that Redmi 9 can activate multiple layers of security at once, for example, in addition to the main login password, a separate code can be set to hide applications or access the gallery, all of which are managed in one place, making it easier to administer, but requires careful modifications to ensure that you don’t block access to important features of the device.
Regularly checking security settings helps ensure that no third-party apps have been granted excessive access rights. Xiaomi’s system settings allow you to see a list of applications that have access to critical features and, if necessary, limit them, creating an additional barrier to potential threats even if the device is unlocked.
Step-by-step instructions for changing the screen lock password
The process of replacing your old password with a new one requires you to take sequential steps that will take no more than a couple of minutes. First, you need to unlock your smartphone using your current valid code, pattern lock, or biometric data if you have them set up. After successfully logging in to your desktop, go to the Settings menu and select Passwords and Security.
In the list that opens, find the screen lock section. The system will prompt you to verify your identity by requesting your current password. This is a mandatory security measure to prevent unauthorized change of code by unauthorized persons. Once you enter the correct code, you will be opened with a lock type selection menu where you can switch from the pattern lock to the PIN, password or mixed type.
☑️ Checking before changing password
When selecting a new type of protection, such as a PIN or a complex password, the system will ask you to enter a new combination twice to eliminate typos. It is recommended to choose a combination that is easy for you to remember, but difficult for others to guess. Avoid obvious dates, such as a birthday, or simple sequences like "1234" or "0000", as these are the first to be checked when hacked.
Once you have successfully installed a new password, the system will notify you of this, and from that point on, all unlock attempts will require a new combination. If you use face unlock or fingerprint, they will continue to work, but as a backup method, you will always need to enter a password, especially after you reboot the device.
Use of biometrics and additional protection methods
Modern smartphones, including the Redmi 9, feature biometric identification modules that make it much easier to access the device, a fingerprint scanner on the back and a facial recognition module allow you to unlock the phone in fractions of a second without having to enter a digital code every time.
The biometrics are set up in the same section, Passwords and security. For fingerprints, the system will suggest that you put your finger several times on the scanner to create a digital cast. Biometric data is stored in a secure part of the memory and cannot be copied or transferred to third parties, which makes this method very reliable.
Face recognition on Redmi 9 works on the basis of a front-facing camera and artificial intelligence algorithms. While convenient, it is worth considering that this method is less secure than a fingerprint scanner, since a two-dimensional image of a face can theoretically be fooled by a high-quality photo, so to access banking applications or payment systems, the system can still request a password.
Combining different security techniques creates layered defenses for your device. You can set up a Smart Lock that lets you keep your phone unlocked in trusted places or when you connect to certain devices, like a smartwatch or a car stereo, a balance between convenience and security that each user customizes for themselves.
Resetting a forgotten password through Mi Cloud
The situation when the user forgets the password lock screen is one of the most common and stressful. Fortunately, the Xiaomi ecosystem provides a mechanism for restoring access through the cloud service Mi Cloud, but for its operation it is necessary that the device was pre-entered into the Mi Account and enabled the function "Find the device".
To reset your password, go from any other device (computer or other smartphone) to the official i.mi.com website. Log in using your Mi Account and password. From the service menu, select the "Find device" option, find your Redmi 9 in the list, and select "Block" or "Reset screen password".
The system will suggest entering a new password to replace the forgotten code on the smartphone. Once the changes are confirmed, it is necessary that the problem device be connected to the Internet (Wi-Fi or mobile network) so that it receives a command to update the lock data. Once the connection with the server is established, the old password will cease to work, and you can log in using the new code.
What if the “Find device” function is turned off?
It's important to understand that this method only works if you have an active Internet connection on a locked phone. If the device is turned off or is in an uncoated area, the command will not be executed until the network is available. So the remote control function should be activated in advance, as long as you remember the password and have access to the settings.
Hard Reset: A last resort for loss of access
If none of the mild recovery methods worked, or the Find Device feature was activated, the only but radical way is a complete factory reset, known as Hard Reset.This procedure completely cleans the smartphone’s internal memory, removing all user data, apps, photos and contacts, returning the device to a “store-like” state.
To reset on a Redmi 9 turned off, you need to press the power and volume buttons simultaneously. Hold them until the Mi logo appears, then release the power button, continuing to keep the volume until the Recovery menu appears. This menu is controlled by the volume buttons (up/down) and the power button (select).
From the Recovery menu, select a language (usually English), then go to Wipe Data and confirm the action by selecting Wipe All Data. The process will take a few minutes, after which the phone will restart. You will have to reconfigure the device by logging into your Google and Mi accounts.
| Resetting method | Data retention | Conditions required | Difficulty |
|---|---|---|---|
| Mi Cloud (remotely) | Yes (data retained) | Internet, active Mi Account | Low. |
| Hard Reset (buttons) | No (complete removal) | Physical access to buttons | Medium |
| Reset via PC (ADB) | No (complete removal) | USB debugging, drivers | Tall. |
| Service centre | Depends on the situation. | Check, warranty, passport. | Low. |
💡
Hard Reset is the only way to unlock a phone without a password if you haven’t set up a Mi Account, but it guarantees you will lose all your data.
Recommendations for Creating Strong Passwords
The security of your Xiaomi Redmi 9 depends on the complexity of the combination you have invented. Simple passwords like "123456" or "000000" are broken in a matter of seconds. Experts recommend using a combination of at least 8 characters, including capital and lowercase letters, numbers and special characters.
It is a good practice to use passphrase, a phrase that consists of a few random words that are easy to remember but difficult to guess by an algorithm. For example, a combination of words associated with a personal but non-obvious event will be much more reliable than a distorted pet name. The password's crypto-resistance increases exponentially with the addition of each new character.
💡
Use password managers to store complex combinations so you don’t have to keep them all in your head, but the master password from the manager needs to be unique and complex.
It is also important to update passwords periodically, especially if you suspect that you may have been a victim of phishing or if the device has fallen into the hands of doubtful persons.Do not use the same password to lock the screen and for important accounts such as email or banking applications.
Pay attention to your surroundings when you enter a password in public, and attackers can use surveillance cameras or just shoulder surfing, which makes it easier and safer to use a quick fingerprint unlock if the situation permits.