The protection of personal data begins with basic security measures. PIN-code SIM-In an era when Xiaomi smartphones (including the Redmi line, POCO Mis not only store contacts, but also access to banking applications, social networks and cloud services, and losing or stealing a phone can cause serious problems. PIN-code SIM-The card prevents unauthorized use of your number for calls, SMS and even two-factor authentication.
Many users mistakenly believe that the lock screen is reliable enough, but this is not the case: an attacker can extract the screen. SIM-You can put it in another phone, and you can access your messages and your calls. PIN-Protection on Xiaomi with different versions of the shell MIUI (including MIUI 14 and HyperOS), what to do if you forget the code, and why some carriers default to disable this feature.
Why do you need it? PIN-code SIM-map in 2026?
According to Kaspersky, in 2023, more than 30% of cyber attacks on mobile devices began with theft or copying. SIM-map. PIN-Code is the first barrier that:
- 🔒 Blocks access to your phone number when retrieved SIM-Without the code, the attacker will not be able to call or send. SMS from your number.
- 📱 Protects against SIM-swapping – a fraudulent scheme where attackers re-release yours SIM-card through the operator and access accounts (banks, social networks).
- 💳 Prevents unauthorized payments through mobile banking or SMS-confirmation.
- 🔄 Save settings when repositioned SIM-cards in another phone (for example, when replacing Xiaomi with a new one).
In some countries (e.g. Germany), operators are required to activate the PIN-In Russia and CIS, this feature is often disabled out of the box, so the user has to configure it himself.
⚠️ Note: If you use eSIM in Xiaomi 13/14 or other flagships, PIN-The code is configured similarly, but via the "Mobile Network" menu" → "eSIM management. Not to be confused with hardware PIN-phone-code!
Preparation: What to Know Before Installation PIN-code
Before activating the protection, make sure that:
- You have a standard one. PIN-It's usually 0000 or 1234, but it can be different (check MTS, Beeline, MegaFon or Tele2).
- SIM-If the card is blocked (for example, due to an unpaid bill), PIN-code will not be installed.
- The phone is unlocked. On the locked screen of Xiaomi, some settings are not available.
Important: if you enter the wrong 3 times in a row PIN-code, SIM-The card will be blocked and will require PUK-code (only available from the operator!) So check the standard before setting up PIN-code.
| Operator. | Standard. PIN-code | Where to find it. PUK-code |
|---|---|---|
| MTS | 0000 or 1234 | Personal Account, USSD *111# |
| Beeline | 1234 | USSD *110*09# or the operator's website |
| MegaFon | 0000 | USSD *105*00# |
| Tele2. | 1234 | Personal office or call in support |
Step-by-step instructions: how to install PIN-code SIM-map
The setup process is the same for most Xiaomi models, including the Redmi Note 12, POCO X5, Mi 11 and others. the interface may slightly differ depending on the version of MIUI or HyperOS, but the overall logic is maintained.
☑️ Preparation for installation PIN-code
Follow these steps:
- Open Settings. Click on the gear icon in the app menu or swipe down and tap the settings icon in the top right corner.
- Move to the "SIM-maps and mobile networks. MIUI 14 Ways May Look Like This: Settings → SIM-maps and mobile networks → Settings SIM-In HyperOS: Settings → Connections → SIM-map.
- Choose yours. SIM-If you have two. SIM-So, take the card that you want to put on the card. PIN.
- Activate the "Blocking" option PIN-Switch the slider to "On" (it turns blue).
- Enter the current one. PIN-It's 0000 or 1234 by default. If you've changed it before, type in your code.
- Come up with a new one. PIN-The system will ask you to enter a new code (from 4 to 8 digits). Do not use simple combinations like 1111 or date of birth.
- Confirm the new PIN. Repeat the code for confirmation.
After activation, the phone will request PIN-code at each turn on or reboot, and when retrieved/inserted SIM-card-to-device.
💡
If you're afraid to forget PIN-Write it in a secure place (for example, in the Xiaomi Cloud app or password manager) and don’t tell anyone!
What to do if you forgot PIN-code SIM-mapping?
It's a bad situation, but it's solvable. The key is not to enter the code at random, otherwise it's not easy. SIM-The card will be blocked after 3 wrong attempts:
- Find it. PUK-It's on the plastic holder. SIM-If you don't have a card holder, contact the operator: 📞 MTS: USSD *111*889# call 0890. 📞 Beeline: USSD *110*09# or 0611. 📞 MegaFon: USSD *105*00# or 0500. 📞 Television2: 611 personal account.
Enter. PUK-code.
After 3 incorrect attempts to enter PIN phone will ask you to PUK. Do it carefully - you will have 10 attempts after which SIM-The card will be permanently blocked!
Install a new one. PIN-code.
After successful PUK entry, the system will suggest coming up with a new PIN.
⚠️ Please note: if you have lost and PUK-code, and plastic holder SIM-card, you will have to contact the operator's communication salon with a passport to reissue the card).
Can we get around? PIN-code-less PUK?
Differences in setting PIN-code-in-class MIUI HyperOS
The MIUI shell is updated regularly, and the settings may change. Below is a comparison for different versions:
| Firmware version | The path to PIN settings | Features |
|---|---|---|
| MIUI 12/13 | Settings → SIM-maps and mobile networks → Settings SIM → Lockdown PIN | Tab interface, slider on the right. |
| MIUI 14 | Settings → SIM-maps and mobile networks → [Choose. SIM] → Lockdown PIN | Design with rounded icons, animation when turned on. |
| HyperOS (2026) | Settings → Connections → SIM-map → [Choose. SIM] → Security | New Security section instead of PIN lock. |
On Xiaomi with HyperOS (such as Xiaomi 14 or Redmi K70), the interface has become more minimalistic, but the logic is the same. If you do not find the right item, search in the settings (the icon of the magnifier at the top).
For eSIM devices (e.g. Xiaomi 13 Pro):
- Go to Settings → Mobile Network → eSIM.
- Select an eSIM profile.
- Tap "Governance" PIN-code".
Frequent Mistakes and How to Avoid Them
Even in a simple installation procedure PIN-Xiaomi users make mistakes that lead to blocking SIM-Let's look at the typical cases:
- 🔢 Input incorrectly PIN 3 times Solution: Don't panic - use PUK-code (see section above). Do not try "select" PIN!
- 📵 Attempt to establish PIN passively SIM-Solution: Check the balance and status of the card through USSD-Operator commands (e.g. *100# for MTS).
- 🔄 Resetting phone settings without turning off PIN-Solution: Before resetting, disable the request. PIN In the settings or remember the code.
- 📱 Use of one PIN for all SIM-Solution: Create unique codes for each card (e.g., 4567 for the first card, 7654 for the second card).
Another common problem is that the phone doesn't ask for a PIN after it's restarted.
- You have disabled the PIN request in the settings (check again!).
- SIM-The card is damaged (try inserting it into another phone).
- The phone activated mode "Flight" (turn it off).
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After installation PIN-When the phone stops catching the network, check if it is blocked. SIM-Put it in another machine, if the network doesn't show up, call the operator.
Additional security measures for SIM-maps in Xiaomi
PIN-Code is just the first step, to protect yourself as much as possible. SIM-Map, follow these tips:
- 🔐 Turn it off. USSD-commands from third-party applications. → Annexes → Permits → Additionally. → USSD-Disable access to all applications except system ones, this will prevent automatic payments or changes in settings through the system. USSD.
- 📡 Set up suspicious activity alerts. MTS, Beeline and MegaFon have services. SMS-change-notice SIM-Maps or new services. Activate them!
- 🔄 Change regularly PIN-Update the code every 3 to 6 months, especially if you suspect someone may have recognized it.
- 📱 Use hardware encryption. In Settings → Security → Encrypt your phone and enable data encryption (this will protect the information even if you are not using it). SIM-map out).
For owners of Xiaomi with NFWith (contactless payment) it is important to remember: PIN-code SIM-maps PIN Payments are different things! Set them up separately in the Google Pay or Mi Pay app.