Many Xiaomi smartphone users face a situation where every time the device is turned on or restarted, the system requires a digital code. SIM-The default card is activated on most carriers to prevent your number from being used in someone else's phone in the event of a theft, however, constantly entering numbers can be annoying, especially if you are confident in the security of your gadget.
With MIUI or the new HyperOS, it takes a few seconds to turn off this protection, and you don't have to call the carrier or call the phone, you have to have all the settings in the standard settings menu, and you have to know the current code or be able to remember it.
In this article, we will discuss in detail the algorithm of actions to disable the password request, explain the difference between the PIN and the password. PUK-code, and also consider what to do if you block the card with too many wrong attempts.Follow the instructions to customize the comfortable use of your Xiaomi.
Why do I need a PIN code and whether it is worth turning it off?
The Personal Identification Number is a basic layer of protection that ties directly to the SIM card chip, not the phone. When you insert the card into any device, even a button or an old one, it will request these numbers, which ensures that even if a smartphone is stolen, an attacker will not be able to insert your SIM into his device and use it to make calls or receive SMS from banks.
On the other hand, if the phone is always with you and protected by biometrics or a complex pattern lock, an additional request when turned on may seem excessive. disabling this feature speeds up the load of the device, which is especially true if you often reboot the smartphone or use the feature of a quick reboot.
However, before you remove the protection, weigh the risks: If you lose a phone with an unlocked SIM card, scammers will have access not only to contacts, but also to all services where authorization is by SMS. For most users, a compromise solution is to use a strong password on the lock screen of the Xiaomi smartphone itself.
Disabling the PIN code removes protection only when the phone is turned on, but does not eliminate the need to enter the code when installing. SIM-card.
Preparing for changes in security settings
Before you go to the settings menu, you need to make sure you have access to the current code. By default, carriers set the standard combinations that are often found on the plastic card holder issued when you buy a SIM card. These are usually simple sequences like 0000 or 1234, but it is better to double-check this information in the contract or in the operator’s personal account.
It's important to understand that to change your security settings, your phone needs to see the network, if your SIM card is locked or in Emergency Calls Only mode, you can't change your settings, make sure the signal is stable and your account balance allows you to take action, although you don't usually need to pay to change your settings.
Also worth remembering is the entry attempt limit. SIM-The card limits the number of incorrect inputs (usually 3 attempts), after the limit is exhausted, the card is blocked, and you will need to unlock it. PUK-So enter the data carefully, preferably using the on-screen keyboard without haste.
Step-by-step: disabling through settings
The MIUI shell interface may vary slightly depending on the Android version and regional firmware, but the menu logic remains the same. You need to go to the section responsible for mobile network settings. Below is an algorithm that is relevant for most Xiaomi, Redmi and POCO models.
Open the Settings app on your desktop. At the top of the screen, find the search bar and type in the word "SIM" or "PIN." This is the fastest way to get to the menu you want, bypassing long tab searches. If the search fails, manually navigate.
Find the Passwords and Security (or simply Security) section. Inside this menu, select Privacy. SIM-Cards (in some versions it may be called Protection) SIM-Here you will see a list of SIM cards installed if there are two of them.
☑️ Checklist before shutdown
Click on the SIM card you want (e.g. SIM 1) and you'll see a switch that says Request PIN, put it inactive, ask the system to enter the current confirmation code, enter 4 numbers and press OK, and then the next time you restart, the phone will no longer ask for a password.
An alternative way through network management
There's a second way to get to these settings, which may be more common for those who change mobile settings a lot. SIM-maps and often contains more technical details about the state of the network.
Go to Settings and select a section SIM-maps and mobile networks. This shows the basic connectivity settings, such as the type of network (4G/5G) Click on the icon or name of your SIM card to open the extended menu.
In the list that opens, look for Settings. SIM-card or lock SIM. The mechanism of action is similar to the first method: you will see a switch that you need to turn off by confirming the action by entering the current password. This method is especially useful if the main security menu interface was changed by the developers in the new version of HyperOS.
⚠️ Note: If after entering the correct code, the system writes “Incorrect PIN”, you may have the feature of showing characters, and you made a mistake in the number, or the card was previously blocked and unlocked PUK-code that dropped the pin on the standard.
What to do if the PIN code is forgotten or lost
It's quite common for a user to forget a set code, if you type in the wrong value three times, SIM-The card will be blocked and the phone will request PUK-Personal Unblocking Key is a more serious access key that is used for emergency unlocking.
PUK-You can't pick up the code with a pumpkin, you only get 10 shots, and after ten wrong inputs, the SIM card burns down completely, and you can only restore it by re-releasing it from the operator (the number will remain, but the plastic will be new.
Where to find out. PUK-code:
- 📄 On a plastic card that came complete with a SIM card (usually on the back or under a protective layer).
- 🌐 In the subscriber's personal account on the website of your communications operator (section "Settings" or "Fare Information").
- 📞 Calling the operator’s support service from another number (you need to call the passport data of the owner).
After input PUK-Write it down or set one that is easy to remember, but don't use obvious combinations like 1111.
Can I unlock it? SIM without PUK-code?
Comparison of data protection methods on Xiaomi
Understanding the difference between security levels will help you build the right security strategy. PIN is just the first line of defense. Today’s Xiaomi smartphones have many other tools that combine to provide reliable data protection.
Let’s consider the main types of locks and their purpose in the table below:
| Type of protection | Object of protection | When requested | Difficulty of discharge |
|---|---|---|---|
| SIM PIN Code | SIM card (number, SMS) | When you turn on the phone | Medium (needed) PUK) |
| Screen password | Operating system | After the screen is turned on | High (data reset) |
| Mi Account. | Cloud data, search | After resetting the settings | Very high. |
| Encryption | User files | Automatically. | Impossible without a password. |
As you can see from the table, disabling the SIM PIN does not make your phone completely vulnerable if you have a strong login password, but if an attacker can bypass the screen lock (which is difficult on new Androids), they will gain access to SMS codes if the SIM card is not protected.
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Tip: Install not just a pattern lock on the lock screen, but a mixed password (numbers + letters) that will make it much harder to access the system, compensating for the lack of a PIN code on the SIM card.
Frequently Asked Questions (FAQ)
Does disabling the PIN code affect the mobile Internet?
Will the PIN code be reset to the standard after reflashing Xiaomi?
Can I change my PIN to my own?
What happens if you introduce an infidel? PUK-code 10 times?
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Turning off the PIN is a matter of balance between convenience and security. If the phone rarely leaves your pocket, you can remove the protection. If the gadget is often in public places, you should leave a request for the code.
Now you know all the nuances of managing the protection of the SIM card on Xiaomi devices, and properly configuring these settings will allow you to feel more confident using mobile technology.