How to remove the password from the SIM card on Android Xiaomi

When you turn on a Xiaomi, Redmi or POCO system suddenly requests input PIN-This is a security mechanism that was implemented by developers to prevent unauthorized access to your number in the event of a device being stolen or a SIM card being retrieved. However, if you are the sole owner of the gadget, the constant need to enter numbers every time you reboot can be annoying and take precious time.

The process of disabling this feature on the shells of MIUI and the new HyperOS is as simple as possible, but requires care, since one wrong step can lead to blocking the card itself. In this article, we will discuss in detail the algorithm of actions that will allow you to deactivate the password request and forget about unnecessary movements when you start the phone. We will look at the standard methods of setting up, working with unlock codes and answering complex questions that arise from owners of Xiaomi equipment.

Before you get to the practical steps, it is important to understand the difference between access codes. PIN-The code is your private key that you install or know by default, and PUK-The code is a disaster recovery tool, and the confusion between these concepts often causes problems, so be especially careful when you enter data when you set up.

What are PIN and PUK codes and how are they different?

Many users mistakenly believe that the SIM card password and the screen unlock code are the same, but technically they are completely different levels of protection. PIN (Personal Identification Number) is tied directly to the carrier chip and stored on the card itself, regardless of which phone it is inserted into, which is the code that Android asks for immediately after the device is turned on, even before the desktop appears.

Unlike in the PIN, PUK (Personal Unblocking Key is an unlock code that is only needed if you typed incorrectly three times. PIN-It's not possible to change it or pick it up, because it's issued by the carrier once when you issue the card. PUK or enter it incorrectly 10 times, the SIM card will be permanently blocked, and it can be restored only by re-releasing from the operator.

⚠️ Warning: Never try to guess. PUK-The limit of attempts is exhausted very quickly, after which the SIM card turns into a useless piece of plastic, requiring replacement in the communication salon.

For the convenience of comparing the main characteristics of these codes, we have prepared a table that will help to clearly structure the information:

Understanding this difference is critical, as you will be managing the settings in Xiaomi’s security settings. PIN, But if you block it, you will need to PUK. Standard factory PIN-The code for most operators is 0000 or 1234, unless you have previously changed it yourself.

Preparation for disabling the protection of the SIM card

Before you make changes to your system security settings, make sure you have access to your current authorization data. If you plan to remove your password, you will first have to enter it to confirm your SIM card management rights. PIN-code, otherwise the system will not allow you to move to the control menu.

It is also worth checking for a stable battery charge, although the setup process does not take much time. In rare cases, when updating the network configuration, the phone may require a restart, and it will be a shame if the device turns off at this point.

If you use a two-sim Xiaomi, you’ll need to repeat the procedure for each card separately, as the settings are stored individually for each slot, an important nuance that is often overlooked when trying to understand why the password disappeared on one card and continues to be requested on the second.

Step-by-step instruction: shutdown PIN-code MIUI HyperOS

The interface of the MIUI and HyperOS shells may vary slightly depending on the version, but the logic of the arrangement of the elements remains the same. To remove the password, you need to go to the settings menu, find the section responsible for security or SIM cards, and change the corresponding switch.

First, open the Settings app and scroll down to Passwords and Security. In some firmware versions, this section may be simply called Security or be inside the Additional menu. Find the Privacy or System Security subsection where encryption and access settings are located.

Next, you should find the Protection item. SIM-card or lock SIM. Once you log in to this menu, you'll see a list of SIM cards installed. Click on the one you want to uninstall. PIN-After successful authorization, move the slider to the Off position).

• 📱 Go to Settings. → Passwords and security.
• 🔒 Select Privacy or System Security.
• 📡 Press Protection. SIM-cards and select the desired slot.
• 🔓 Enter the current password and turn off the lock switch.

⚠️ Warning: If after the feature is disabled, the phone still requests the code the next time it restarts, it may not have been set up because of a system failure. Try to turn on flight mode, then turn it off and check the protection status again.

After performing these actions, the next time you turn on your Xiaomi smartphone, the password request will not appear. The SIM card will be activated automatically, providing instant access to the network and calls.

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If you change your SIM cards frequently, leave the protection on, which ensures that if your phone is lost, the new owner will not be able to use your SIM card to make calls or access SMS-confirmed accounts.

Alternative method through engineering menu and network settings

There is another way to deaktivate a password request, which is sometimes more accessible in older versions of MIUI, which is to directly access mobile network settings, which can be useful if the standard security menu is unavailable or hidden for some reason.

To do this, go to the Settings. → SIM-maps and mobile networks. Select the SIM card from the list. In the menu that opens, find the optional settings or immediately look for the option to lock. SIM-You click on it, you'll be taken to the password management menu, where you can also check the lock box.

In some cases, the use of USSD-Teams, although modern versions of Android often block direct control PIN However, you can try 04* to change the code or 042* to unlock it, but this method does not work on all operators and requires knowledge of the old password.

Using alternative configuration paths allows you to manage network settings flexibly, especially if the main interface has been changed as a result of a system update, the main thing is to follow the instructions on the screen clearly and not interrupt the process.

What to do if the SIM card is blocked

If you or someone else have entered the infidel three times PIN-code, the SIM card is blocked, and the phone will require input PUK-It's not a cause for panic, but it requires immediate and precise action, and there's a lock message and a field on the screen. PUK.

Where do you find this code? Most often it's on a plastic card that you gave away with the SIM card when you bought it. Look for PUK or PUK Code and an eight-digit number. If the plastic card is lost, you can find it in the user's personal account on the operator's website or in the mobile application ("Fare Information" or "Security settings").

After successful entry PUK The system will suggest inventing a new PIN-Enter the desired combination twice to confirm, then the lock will be removed, and you can use the communication. PUK and you can not find it in your personal accounts, the only solution will be a visit to the operator’s communication salon with a passport for reissuing the card.

Frequently Asked Questions (FAQ)

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The first rule of safety: always keep it safe. PUK-The best way to do this is to take a picture of a plastic card and save it to a cloud storage or write it to a password manager.