Data protection starts with small things, and one of them is PIN-code SIM-Many Xiaomi users (including Redmi models and other users) POCO) But the statistics on theft and unauthorized access to mobile devices suggest otherwise: more than 30 percent of fraudulent bank account transactions start with a hack. SIM-Installation of the map. PIN-The code takes less than a minute, but can save you from serious financial losses and leakage of confidential information.
In this article, we will discuss how to activate the protection. SIM-maps on any Xiaomi smartphone, including interface features MIUI 12/13/14. You will also learn what to do if you forget your password and how to distinguish it. PIN from PUK, And why some operators default to disabling this feature, and at the end, answers to frequent questions and life hacks on additional security.
If you've never used it PIN-protection SIM-Now, this might surprise you, but before we get to the instructions, let's get to the point of why this is really important in 2026.
Why put a password on SIM-map?
Many people think that locking the screen of a smartphone is a sufficient means of protection. PIN-code SIM-The card solves completely different tasks:
🔹 Protection against cloning SIM. Fraudsters can intercept your number through social engineering (call in support of the operator) or technical vulnerabilities. PIN-This code makes it impossible without physical access to the card.
🔹 Locking when stealing your phone, even if a thief drops Xiaomi to factory settings, no PIN-code SIM-The card will remain locked, which gives you time to lock the operator's number.
🔹 Preventing unauthorized calls: If someone temporarily takes possession of your phone (e.g., in a service center), they will not be able to call or send SMS unlockless SIM.
🔹 Compatibility with corporate policies: some companies require employees to activate PIN on SIM-Maps for access to corporate resources.
⚠️ Attention: No PIN-The attacker can re-release a duplicate of yours in 5 minutes SIM-cards in the operator's cabin using a stolen passport. PIN It's becoming impossible.
In Europe, from 2023, operators are required to activate by default PIN-new-look SIM-In Russia and CIS countries, this is left to the user's discretion — and many people neglect this feature without even knowing the risks.
Preparation: What to Know Before Setup
Before setting the password to SIM-Map in Xiaomi, check out a few key points:
📌 Make sure you know the standard PIN. It is usually listed on a plastic holder. SIM-If you do not have a card (for example, 0000 or 1234), check with the operator.
📌 Check the model of the smartphone. SIM (Dual SIM) You will have to set up each card separately.
📌 Remember or write down. PUK-You'll need it if you make a 3-time mistake when you type it. PIN. Usually. PUK near-indicated PIN holder SIM.
📌 Make sure the network is stable. SIM-The card is not identified (for example, due to damage), first solve this problem.
If you use Xiaomi with eSIM, the setup process will be slightly different – we’ll talk about this in a separate section.
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Do not use obvious combinations like 1111 or 1234 for the PIN-Better come up with a unique 4-digit code that is not associated with birth dates or other easily guessable numbers.
Step-by-step: how to put a password on SIM-map
Activation process PIN-The code is the same for most Xiaomi models, including the Redmi Note. 12, POCO X5, Xiaomi 13 And others. The instructions are suitable for MIUI 12/13/14:
1. Open the Settings app (the gear icon on the desktop).
2 Go to the Passwords and Security section (some firmware may refer to as Security).
3. Select “SIM-card lock” (or “SIM-card settings” → “PIN lock”).
4. Activate the "Request" switch PIN-code" (or "Blocking" SIM»). The system will ask you to enter the current PIN (default 0000 or 1234).
5. Upon successful entry, it will be possible to change PIN-Enter a new 4-digit code and confirm it.
6.Reboot your smartphone so that the changes take effect. Once turned on, the system will request PIN-unlocker SIM.
Make sure the phone requests a PIN when turned on
Check that both SIM-Cards (if any) are protected
Record a new PIN and PUK in a safe place
Restart the phone to check-->
If you have two. SIM-Repeat steps 3-5 for the second card on the same menu. SIM has its own separate PIN and PUK.
Features for eSIM in Xiaomi
Xiaomi’s eSIM-enabled smartphones (like the Xiaomi 13 Pro or Redmi K60) require a slightly different approach.
🔸 No physical holder — PIN and PUK For eSIM, come in SMS upon activation or indicated in the operator's personal account.
🔸 Configure via "Mobile Network." Path: Settings → SIM-maps and mobile networks → [Your eSIM] → Lockdown SIM-map.
🔸 You can’t remove the eSIM if you block it. PIN-code, you can only unlock through PUK op-ed.
🔸 Multi-profile support: Up to 5 eSIMs can be activated on a single device, but each profile is blocked separately.
Important: Some carriers (such as Tele2 or Yota) do not support changing the PIN for eSIM through the phone menu, in which case you will have to use the web interface of your personal account.
What to do if you forgot PIN-code SIM-maps in Xiaomi?
If you have entered incorrectly 3 times in a row PIN, SIM-The card will be blocked and will require PUK-This is the code:
1. Find it. PUK-It's on the plastic holder. SIM Or in a contract with the operator. If you lose, ask for a:
- Personal account on the operator's website
Call in support (passport required)
- SMS-command (for example, send to MTS) PUK 111)
2. Enter. PUK In the window that appears on the Xiaomi screen, you'll have 10 attempts -- if you're wrong, SIM-The card will be permanently blocked.
3. Create a new PIN after successfully entering the PUK. The system will prompt you to do this automatically.
4.Reboot the phone so that the changes apply.
⚠️ Please note: if you have lost and PIN, and PUK — SIM-The card will have to be reissued at the operator's office. This is a paid service (from 100 to 500 rubles depending on the tariff).
Tip: If you’re afraid to forget the codes, save them in an encrypted note (like the Mi Notes app with a password) or in a password manager like KeePass.
Can you bypass PIN without PUK?
Common Problems and Their Solutions
When you set up PIN on SIM-Xiaomi users are faced with typical errors. We put them into a table with solutions:
| Problem. | Possible cause | Decision |
|---|---|---|
| No “SIM lock” option in the settings | SIM-The card is not recognized or damaged | Restart your phone, check your contacts. SIM-Try another card. |
| Phone does not request PIN after restart | Firmware failure or conflict with the MIUI shell | Reset network settings: Settings → SIM-map → Resetting network settings |
| PUK-The code is not suitable (mistake "incorrect" PUK") | Misprint or use of a PUK from another SIM | Check the PUKs from the operator – sometimes they will issue two codes (PUK1 and PUK2). |
| After entering the PIN, there is no network. | The operator blocked the card due to frequent errors | Wait 1-2 hours or contact support to unlock |
| You can't change your PIN to eSIM. | Limitation of operator | Use your personal account on the operator’s website to change your PIN |
If none of the solutions worked, try updating Xiaomi firmware to the latest version. SIM-The cards are corrected in new versions MIUI.
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If the phone stops seeing the network after activating the PIN, check if 2G Only is enabled in the mobile network settings. Some carriers block 3G/4G for the default active PIN SIM.
Additional security measures for SIM-map
PIN-Code is just the first step, to protect yourself as much as possible. SIM-Map in Xiaomi, follow these guidelines:
🛡 Activate two-factor authentication from the operator, for example, MTS and Beeline have the option to confirm important actions on the network. SMS backup.
🛡 Turn it off. USSD-commands to change settings SIM. This will prevent fraudulent money transfers through service teams.Path:Settings → SIM-map → USSD-team → Shut down.
🛡 Use monitoring applications SIM. For example, SIM Card Monitor monitors your card access attempts.
🛡 Set up change notifications SIM. Some banks (such as Tinkoff or Sberbank) send a push if your number is tied to another one. SIM.
🛡 Check the active devices in the operator's personal account regularly, and if an unknown device appears, lock them immediately. SIM.
If you use mobile banking, never store it. PIN from SIM-The card and credit card in one place (e.g., in phone notes) is equivalent to leaving the keys to the apartment under the mat.