How to set a PIN code on SIM-Map in Xiaomi phones: a detailed guide

Protection of personal data begins with basic security measures, and the installation of a PIN code on the SIM-The map is one of them. In Xiaomi, Redmi and smartphones. POCO This process takes only a few minutes, but many users are faced with difficulties: they can not find the right partition in the settings, confuse the PIN with the pattern lock or the password of the lock screen. MIUI, which distinguish the process from standard Android, and show how to properly configure the protection SIM-maps on models from Xiaomi 11T Pro to budget Redmi Note 12.

You will learn not only the basic instructions, but also the nuances: what to do if the phone asks for it. PUK-code after three incorrect attempts, how to disable a PIN request when restarting, and why some operators (such as Tele2 or MTS) default to disable this feature. We will also compare the security levels of PIN, screen password and fingerprint so you can choose the best option for your Xiaomi.

Why do you need a PIN code on SIM-The map and how it differs from other locks

Many people confuse the PIN code SIM-A card with a screen unlock password or a pattern lock, which are actually three different layers of protection:

• 🔒 PIN code SIM — It blocks access to the mobile network, and without it, the phone can't call, send. SMS Use the mobile internet even if the screen is unlocked.
• 📱 Password/Graphic screen key – protects the data on the phone (photos, messages, applications), but does not affect the work SIM-map.
• 👆 Fingerprint/face is a convenient but less reliable way to unlock (can work by accident or be fooled by a photo/cast).

The main advantage of a SIM PIN is that it protects your number from unauthorized use, for example, if your phone is stolen, an attacker cannot:

• 📞 Call or send SMS from your number (even after resetting the phone to factory settings).
• 💳 Connecting paid services through USSD-commands (for example *111# at Beeline).
• 🔄 Re-release SIM-card in the communication room without your knowledge (the operator will require you to PUK-code).

⚠️ Warning: If you've never set a PIN, it's off by default! That means anyone who inserts your PIN is off. SIM-The card in another phone, can use it. Operators (for example, MegaFon or Yota) often do not activate this protection when selling it.

Preparation: What to Know Before Installing a PIN Code

Before you turn on protection, check out a few key points:

1. Find out the standard PIN code of yours SIM-It's usually 0000 or 1234, but some operators (like Tinkoff Mobile) give out unique combinations. SIM-card or in a contract with the operator.
2. Check out the MIUI version. In older versions (before MIUI 12), the security menu may differ, and the current instructions below are suitable for MIUI 13/14 and later.
3. Have your hand on it. PUK-You need it if you enter the wrong PIN three times, find it in the documents from the operator or request it through your personal account (for example, in the MTS LC).

Also note that after activating the PIN code:

• 🔄 The phone will request it every time it is turned on or restarted.
• 📶 Without entering a PIN code mobile network (2G/3G/4G/5G) It won’t work, just Wi-Fi and emergency calls.
• 🔧 Some functions (e.g., double functions) SIM eSIMs may require additional settings.

Step-by-step: how to install a PIN code on SIM-map

The process takes no more than a minute if you know where to look. Follow the instructions for MIUI 13/14 (on older versions, the paths may be slightly different):

1. Open Settings. Click the gear icon on the home screen, or swipe down from the top of the screen and tap the settings icon.
2. Go to Passwords and Security. In some models (such as the POCO X5 Pro), this item may be called Security or Protection and Privacy.
3. Select Settings SIM-If you have two cards. SIM-cards, there will be a choice - click on the one for which you want to install a PIN.
4. Activate the Block option SIM-Switch the slider to the On position (it will turn blue).
5. Enter the current PIN. If you have never changed it, try the standard combinations: 0000, 1111 or 1234.
6. Set a new PIN (optional), the system will suggest changing the standard code to your own, come up with a combination of 4-8 digits (do not use dates of birth or simple sequences like 2580).

Now, the next time you turn on your phone, the system will ask for a PIN. SIM-Repeat the process for the second.

Remember a new PIN or record it in a safe place|Check the operation of the mobile network after entering the PIN|Make sure that PUK-code is on hand|Reboot the phone to test the PIN request-->

Features for different Xiaomi models

Although the overall algorithm is the same, some models have nuances.

If your model is not in the table, use the universal method: enter the search for settings (lamp in the upper right corner) the request “PIN SIM” – the system will find the desired section.

Frequent Mistakes and How to Avoid Them

Even in a simple process, users make mistakes that lead to a lockdown. SIM-Let's look at the most common maps:

⚠️ Note: If you enter the wrong PIN three times, SIM-The card will be blocked and will require PUK-It can only be obtained from the operator, in the communication room or through the personal account. PUK-unlock SIM impossible!

• ❌ Entering the wrong PIN when you first turn on. Many people think that the standard PIN is the last 4 digits of a phone number. It's not! Use combinations from the operator's documentation.
• ❌ Ignoring the PIN request after the update MIUI. After major updates (e.g., with the MIUI 13 by 14) the phone can reset security settings. Always check lock status SIM!
• ❌ Install a PIN code that is too simple, avoid combinations like 1234, 0000 or 2580, which are easy to match. Use random numbers like 7492.

Another common problem is that the phone doesn't ask for a PIN after the reboot, which happens if:

• 🔘 In the settings disabled option Request PIN when enabled (check in the menu) SIM-map).
• 🔄 The phone was turned off incorrectly (for example, the battery sat down), and the system did not save the settings.
• 📱 Beta version installed MIUI Bug-in (update the firmware to a stable version).

💡

If you forgot the PIN code, but the phone is unlocked, try changing it through the Settings menu. SIM-map → Change the PIN. This will require the current PIN (if you don’t know it, use the standard 0000 or 1234).

How to Disable or Change PIN Code on Xiaomi

If you decide to remove protection or update the code, do it in a few steps:

Disabling the PIN code

1. Go to Settings → Passwords and Security → SIM-card settings.
2. Turn off the slider SIM-card lock.
3. Enter the current PIN code for confirmation.

Change of PIN code

1. In the same menu, click Change PIN.
2. Enter the old PIN, then the new one (twice for confirmation).
3. Press OK – the changes will take effect immediately.

Important: After disabling the PIN code SIM-If you're selling or transferring a phone, it's best to leave the security on.

💡

Always check your mobile network after changing your PIN! Sometimes operators (like Yota) may temporarily block access to the network when they change their security settings.

Additional security measures for SIM-maps in Xiaomi

PIN is just the first layer of protection, to keep your security as secure as possible. SIM-Map, take advantage of these tips:

• 🔐 Activate two-factor authentication (2FA) For example, MTS and Beeline allow you to link a number to a Google or Telegram account to confirm important actions (for example, re-release). SIM).
• 📱 Set up the lock on the Phone app. In Settings → Annexes → Block apps add the phone app, so even with the screen unlocked, an attacker will not be able to call.
• 🔄 Check active services regularly. USSD-team *111*09# (MegaFon or *100# (MTS) to make sure that your number is not connected to paid subscriptions.
• 🛡️ Use eSIM instead of physical SIM-In Xiaomi 13 and later, you can activate eSIM, it is harder to copy or steal.

You should also set up notifications for suspicious activity. MIUI 14 has a Security Alert feature (in the Passwords and Security section) that will alert if someone tries to insert your SIM-card.

FAQ: Frequently Asked Questions