How to install PIN-code SIM-Map in Xiaomi phones: the full guide

Protection SIM-Password cards are one of the easiest but most effective ways to prevent unauthorized use of your number.On Xiaomi smartphones (including Redmi, POCO Black Shark and this function is implemented through standard settings MIUI, But it has a few nuances that few people know about, like not all users understand that. PIN-code SIM The unlock password and screen unlock password are different levels of protection and can be combined for maximum security.

In this article, we will not only discuss the basic installation procedure. PIN-We will also explain how to avoid common errors (for example, blocking). SIM After three wrong attempts, what is different? PIN1 from PUK, And why some Xiaomi models might be hiding the option, and you'll also learn how to reset your password if you forget it, and what alternative security methods are available. SIM They exist in 2026.

Why put a password on SIM-map?

Many users neglect protection. SIM-a card, believing that a password or a fingerprint is sufficient. PIN-code SIM There are unique advantages:

• 🔒 Protection against theft of numbers: no PIN The attacker will not be able to use your SIM In another phone, even if you steal a smartphone.
• 📵 Blocking Unauthorized Calls: If Your Phone Gets into the Wrong Hands, SIM-the card will remain blocked.
• 💳 Financial Transaction Protection: Many banks link payment confirmation to a phone number — PIN prevent fraud.
• 🔄 Compatible with any device: Password works on all phones, not just Xiaomi.

In addition, in 2026, cases of SIM-swapping (swapping the SIM card from the operator) have become more frequent, when scammers reissue a duplicate of your card. PIN-code complicates this scheme, since it will require the input of code to activate the duplicate.

Preparation: What to Know Before Setting a Password

Before you start setting up, check out a few key points:

1. Make sure that SIM-card PIN-Older cards (released before 2010) may not have this feature. If you don't have an option in the settings, contact the operator for a replacement.
2. Know the default standard PIN. It's usually 0000 or 1234, but some carriers (like Tele2) may have a different one.
3. Check availability PUK-You'll need it if you forget. PIN. PUK marked on the plastic holder SIM or in the operator's personal office.

Important: If you enter the incorrect PIN three-time, SIM-The card is locked and you will need to unlock it. PUK. Without him, the map will have to be changed!

Step-by-step: how to set a password for SIM in Xiaomi

The procedure is the same for most Xiaomi, Redmi and POCO models on MIUI 12–14. If you have an older version of the shell (e.g. MIUI 11), the path to settings may vary slightly.

Follow these steps:

1. Open the Settings app (the gear icon on the desktop).
2. Go to section. SIM-maps and mobile networks (on some models - Mobile network).
3. Choose yours. SIM-card (if there are several).
4. Tapping on the security item SIM-maps or Install PIN SIM-map.
5. Turn on the PIN Request switch.
6. Enter the current PIN (by default 0000 or 1234).
7. Come up with a new PIN (from 4 to 8 digits) and confirm it.
8. Reboot your phone to make the changes take effect.

After restarting each time the phone is turned on or restarted SIM-maps (for example, after the flight) the system will request PIN.

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If the settings do not include the item "Security" SIM-maps, try inserting SIM In other slots (if you have dual-SIM) or upgrade MIUI last-minute.

Frequent problems and their solutions

Even after setting up correctly, Xiaomi users sometimes face difficulties.

If the phone doesn’t recognize SIM after entering PUK, try:

• 📱 Reset the device.
• 🔄 Insert SIM In another smartphone and check its performance.
• 📞 Contact the operator for diagnosis (maybe the card is damaged).

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If you forgot. PUK-- code, do not try to guess it after 10 wrong attempts SIM-The card will be permanently blocked and will require replacement.

How to remove the password from SIM-maps on Xiaomi

If you decide to disable the protection, do so through the same settings:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select your SIM.
3. Turn off the PIN Request switch.
4. Enter the current PIN for confirmation.

After that, the phone will stop asking for the code when it turns on, but remember, without a PIN, your SIM becomes vulnerable to attackers.

⚠️ Attention: if you turn off PIN Before selling your phone, don’t forget to get it. SIM-The new owner can use the card.

Alternative ways to protect SIM on Xiaomi

In addition to the standard PIN, on Xiaomi smartphones you can use additional security measures:

• 🔐 Lockdown SIM via apps: some antiviruses (such as Kaspersky or Avast) allow you to remotely block SIM phone-stealing.
• 📲 Two-factor authentication with the operator: connect confirmation of important actions (for example, tariff changes) through the SMS + password.
• 🔄 Standby SIM with the same number: some operators (for example, MegaFon) offer the service "Duplicate" SIM", which can be activated in case of loss of the main card.

Also in MIUI 14 a function has been introduced to protect personal data, which may restrict access to SIM-a map of individual applications:

1. Go to Settings. → Confidentiality.
2. Select Special Permits.
3. Find the access point to SIM-map and disable it for unreliable applications.

Comparison of protection methods SIM-map

To choose the best way, compare the advantages and disadvantages of each option:

For maximum security, we recommend combining PIN with SIM + two-factor authentication from the operator.

FAQ: Answers to Frequent Questions