How to put it PIN-code SIM-Map in the Xiaomi phone: the full guide

Protection SIM-map PIN-code is one of the basic but crucial steps for the security of your Xiaomi smartphone, and even if the phone falls into the wrong hands, without it, an attacker will not be able to make calls, send messages, and send messages. SMS Or use the mobile Internet. In this article, we'll go into detail on how to activate the Internet. PIN-protection on any Xiaomi device – from the flagship Xiaomi 14 to the budget Redmi Note and POCO.

You will learn not only the standard way through the settings, but also alternative methods for different versions of the MIUI shell. We will also tell you what to do if you forgot the PIN, how to reset the input attempts and why sometimes the protection turns off itself. At the end of the article, answers to frequent questions and security hacks.

Why do you need it? PIN-code SIM-map

Many users are neglected PIN-But this is a mistake. Here are 3 key reasons why you should include it. PIN on SIM-map:

• 🔒 Protection against theft: No PIN-The thief will be able to use your number to make calls, SMS-fraud or even reissue SIM operator.
• 📱 Locking in case of loss: Even if the phone is unlocked (for example, through a fingerprint), SIM-card will remain protected.
• 💳 Payment security: Many banks link transaction confirmation to SMS. PIN-The code will prevent unauthorized access to them.

Xiaomi also introduced the MIUI 12+ Double Check SIM feature, which requires a PIN to even replace the card in the settings. This is an additional layer of protection against SIM-swap fraud.

⚠️ Note: If you are using eSIM (virtual) SIM-map), the setting process PIN See the "Features for eSIM" section below.

Preparation before setting up PIN-code

Before you turn on protection, follow a few simple steps:

Make sure that SIM-The card is active and recognized by the phone

Remember or write down PUK-code (it is needed to unlock in case of errors)

Check your account balance (some operators block SIM at zero balance)

Disable "On the plane" (otherwise SIM will not be available)

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Especially important to know. PUK-code - it's attached to SIM-plastic-card SMS When activated. If you enter PIN 3 times wrong, the card is blocked and it can be unlocked only through PUK. You can also know him:

• 📄 In documents from the operator (contract, passport) SIM).
• 📞 Calling the support team (passport required).
• 🌐 In the personal account on the operator's website (section "My" SIM-map").

If you've never changed PIN-the default code, it usually coincides with the last 4-8 digits of the phone number or is indicated on the back SIM-For example, for MTS, it is often 1234 or 0000, but it is better to check with the operator.

Standard way: Enabling PIN through Xiaomi settings

It’s a versatile method that works on all Xiaomi smartphones regardless of model – whether it’s Xiaomi. 13T Pro, Redmi 12 or POCO X5. The instructions are relevant to MIUI 11–14:

1. Open the Settings app (the gear icon on the desktop).
2. Go to section. SIM-Maps and mobile networks (in some versions - Mobile network).
3. Choose yours. SIM-If you have two cards, then you should take them).
4. Click on Security. SIM-card SIM.
5. Activate the PIN lock switch.
6. Enter the current one. PIN-Code (default or previous code).
7. Come up with a new PIN (from 4 to 8 digits) and confirm it.

After saving the phone will restart, and the next time you turn on will ask for PIN. If you use two of them SIM-Repeat the process for each individual.

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To avoid entering a PIN every time you reboot, MIUI 13+ can enable the “Unlock When Enabled” option in the SIM security settings, and the code will only be requested after the card is removed.

Alternative ways to include PINs

If the standard method doesn’t work (for example, due to a MIUI failure), try these options:

Method 1: Through the Quick Settings Menu

Swipe down from the top edge of the screen to open the notification bar. Press and hold the Mobile Network (antenna) icon, this will open the section SIM-Follow the steps from the standard instructions.

Method 2: Using USSD-team

Some operators allow you to control the PIN over the USSD, for example, for Beeline, send:

*110*181#

For MegaFon:

*105*00#

Then follow the voice prompts or SMS-Please note that this method does not work for all operators and may require confirmation by call.

Method 3: Through the Engineering Menu (for Advanced)

If your Xiaomi supports an engineering menu (like Qualcomm Snapdragon models), you can try:

1. Dial ##4636###.
2. Select Phone Information.
3. Select SIM and find the SIM Lock option.

This is a risky way to do things wrong, and you can crash your network, and you can only use it if other methods don't work.

What to do if you forgot PIN-code

If you've entered PIN wrongly 3 times, SIM-The card will be locked and the phone will show the message "PUK It's required. Here's how to unlock the card:

1. Enter. PUK-code (it is indicated on the plastic carrier) SIM or in documents from the operator).
2. After successful entry, the system will suggest creating a new PIN.
3. Come up with and confirm a new code.

If you don't know the PUK:

• 📞 Call in support of the operator (numbers: MTS - 0890, Beeline - 0611, MegaFon - 0500, Tele2 - 611).
• 💻 Restore through the personal account on the operator's website (section "My" SIM-Cards" or "Service management").
• 🏦 Contact the communication salon with a passport - there will be a new one SIM same-numbered.

⚠️ Note: If you enter incorrectly 10 times PUK, SIM-The card will be permanently locked and you'll have to change it!

Features of setting up a PIN for eSIM in Xiaomi

Virtual SIM-eSIM cards are supported in Xiaomi starting with Xiaomi 12, Redmi models K50 And newer. Including process. PIN They're a little different:

1. Open the Settings. → SIM-maps and mobile networks.
2. Select your eSIM (it is marked with the chip icon).
3. Tap eSIM settings or Control.
4. Activate the option to block PIN.
5. Enter the code (usually 1111 or 1234 by default).

Important nuances for eSIM:

• 🔄 No physical. PUK: When blocking, you can only unlock eSIM through the operator.
• 📱 Device-Based: Some eSIMs are tied to IMEI When changing your smartphone, you may need to reactivate it again.
• 🌍 Roaming: Some eSIM countries with PIN It may not work – check with the operator before the trip.

Frequent problems and their solutions

Sometimes users encounter errors when setting up a PIN. Considered situations and ways to solve them:

Problem 1: The option “PIN lock” is inactive

Possible causes:

• 🔌 SIM-The card is not recognized (check if it is inserted correctly).
• 📵 "In the plane" mode is turned on (turn it off).
• 🔄 Phone needs to restart after update MIUI.

Problem 2: PIN is requested too often

If the phone asks for a PIN several times in a row:

• 🔄 Reset the device.
• 📱 Reset network settings in Settings → SIM-map → Resetting mobile network settings.
• 🛠️ Update. MIUI Up to the latest version (possibly an old firmware bug).

Problem 3: After the PIN is turned on, the mobile network stopped working

This may occur if:

• 📶 Operator locks in. SIM first-inclusive PIN (Solution: Call support).
• 🔧 In the settings APN Settings are lost (check them in Settings). → SIM-map → Access points (APN)).

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If the network signal is lost after activation of the PIN, first check if the 2G Only mode is turned on in the SIM settings. Sometimes MIUI resets them when security settings change.

FAQ: Answers to Frequent Questions