How to set a password to SIM-Map on Xiaomi smartphones: protection from unauthorized access

Protecting your personal data on a smartphone starts with basic security measures, and one of them is installing it. PIN-code SIM-On Xiaomi, Redmi and other devices POCO This feature often goes unnoticed, although it can prevent not only unauthorized use of your number, but also theft of funds from your mobile account, unlike a screen lock, which protects access to the phone itself, PIN-code SIM-The card works immediately after the device is turned on or restarted - even before the operating system loads.

Many users have difficulty trying to activate this feature: the settings menu MIUI not always intuitively clear, but in newer versions of the shell (for example, MIUI 14) The paths to the desired parameters may differ. In this article, we will analyze step-by-step instructions for different Xiaomi models, explain how to choose a reliable one. PIN-The code, what to do if you forget it, and why some operators block the ability to change the standard code, and you will also learn how to get around common errors, such as when the system asks for a code. PUK-code after three incorrect attempts to enter.

We will pay special attention to the nuances for devices with two SIM-cards (Dual) SIM) — here, the configuration of each card takes place separately, and often users miss this point, leaving one of the cards. SIM-If you use a Xiaomi smartphone as a working tool or store sensitive information on it, this guide will help you close another security gap.

Why put a password on SIM-map in a Xiaomi smartphone

At first glance, the lockdown SIM-Password cards may seem like an unnecessary measure – after all, the phone already has a pattern lock, fingerprint or Face. ID. However, this function has several critical advantages:

• 🔒 Protection against theft of numbers: No PIN-The attacker can get yours out. SIM-Insert it into another phone and access it. SMS (including confirmation codes for banking transactions).
• 💳 Mobile banking security: Many banks link accounts to a phone number. SIM-The card is not protected, fraudsters can reissue it in their name and gain control of your accounts.
• 📱 Locking your phone when you lose it: Even if your Xiaomi is stolen or you lose it, SIM-map PIN-The code will remain blocked, which will complicate access to personal data.
• 🔄 Reset to factory settings: When resetting your phone via Recovery SIM-map PIN-The code does not unlock automatically, it is an additional layer of protection.

It is important to understand that PIN-code SIM-The cards are not the same as the Mi Account password or the screen lock. It's stored directly on the chip. SIM-It's a card that's operated by a carrier, which means that even if you drop your phone before the factory settings, PIN-But there's a downside to this, which is that if you forget the code, unlock it. SIM-The map will be available only with the help of PUK-code (it is issued by the operator when buying) SIM-map).

⚠️ Note: Some operators (such as Tele2 or Yota) set the standard by default. PIN-code (usually 0000 or 1234) If you have not changed it, your SIM-map vulnerable to selection!

Preparation: What to Know Before Installation PIN-code

Before you start setting up, make sure you have all the information you need:

1. Current PIN-If you have never changed it, try the standard combinations (0000, 1111, 1234.
2. PUK-Code: This is an 8-digit code to unlock SIM-Cards after 3 incorrect attempts to enter PIN. It is usually indicated on the plastic carrier to which it was attached. SIM-card.
3. Phone model and version MIUI: In older versions of the shell (for example, MIUI (10) path to settings SIM-maps may differ.

Also consider the following points:

• 📶 After activation PIN-It's going to have to be typed every time you turn on your phone or reboot it, and it can be inconvenient if you turn off your device often.
• 🔧 If you use two of them SIM-maps, the setting will need to be repeated for each individually.
• 🔄 Some operators (for example, MTS or Beeline) allow you to change the PIN-code only through their official appendix or USSD-team.

If you are not sure what your current status is. PIN-You can try to enter it incorrectly three times in a row - after that the system will ask for it. PUK-But be careful, after 10 failed attempts to enter PUK SIM-The card is permanently blocked and the operator will have to change it.

Step-by-step instructions: how to install PIN-code SIM-Xiaomi

Activation process PIN-The code is the same for most Xiaomi models, including the Redmi Note 12, POCO X5, Mi 11 and others, but depending on the version MIUI (12, 13 or 14) there may be minor differences in the location of menu items:

Method 1: Through phone settings (MIUI 12–14)

1. Open the Settings app (the gear icon on the desktop).
2. Go to section. SIM-Maps and mobile networks (or Connections and Sharing) → SIM-maps in some versions).
3. Choose. SIM-The card you want to set your password for (if you have a dual card). SIM, Repeat the process for the second card).
4. Slip on the block item SIM-maps or Install PIN-code SIM-map.
5. Turn on the switch Request. PIN-code.
6. Enter the current one. PIN-code (if previously installed) or standard code (0000, 1234).
7. Think of it and enter a new one. PIN-4 to 8 digits code. Avoid simple combinations!
8. Confirm the new code and save the changes.

Remember a new code or write it in a safe place|

Make sure PUK-code available (on plastic media) SIM or in contract)|

Check the mobile network after activation PIN|

Synchronized contacts with the account Google/Mi, Not to lose them when you lock them.-->

Method 2: Through USSD-commands (if menu is not available)

Some operators (for example, MegaFon) allow you to manage the PIN-You can use code through special commands:

• 📞 Enter the dialer: 04[old-fashioned PIN][new PIN][new PIN]# and press the call: *04*1234*5678*5678#.
• 📞 To turn it off. PIN-code: 05[current] PIN]#.

If these teams are not working, clarify the current ones. USSD-For example, the Beeline for the change PIN command *110*04*[old-fashioned PIN][new PIN][new PIN]#.

Method 3: Through the operator's application

Many operators offer their own management applications SIM-Like a map:

• 📱 MTS: Annex “My MTS» → «Management SIM» → «Change. PIN-code».
• 📱 Beeline: The app "My Beeline» → «Settings SIM-map».
• 📱 Tele2: My Tele2 app» → «Management of services».

This method is convenient if the standard settings MIUI do not change PIN-code (for example, due to operator restrictions).

How to choose a reliable PIN-code SIM-map

Many users make critical mistakes when choosing a PIN-using birth dates, repeating numbers or standard combinations. SIM-A map that's vulnerable to selection. Follow these guidelines:

• 🔢 Length: Use the maximum length allowed, 8 digits. The longer the code, the harder it is to pick it up.
• 🎲 Accident: Avoid sequences (12345678) and repeating digits (11223344).
• 📅 No personal data: Do not use year of birth, last digits of phone number or other predictable combinations.
• 🔄 Regular shift: Change PIN-code every 6-12 months (you can link this action to the replacement of passwords in other services).

Examples of reliable PIN- codes:

If you have trouble coming up with code, use a password generator (e.g., Google Authenticator or passwordsgenerator.net) and select the “Numbers Only” option and set the 8-character length.

💡

Save it. PIN-code PUK-code in the password manager (such as Bitwarden or KeePass) marked «SIM-Never keep them in notes on your phone or on a piece of paper in your wallet!

What to do if you forgot PIN-code SIM-maps on Xiaomi

Forgotten PIN-code is one of the most common problems. If you typed the wrong code three times in a row, SIM-The card is blocked and you will need to unlock it. PUK-Personal Unblocking Key (PHC) is what you need to do:

Step 1: Find out PUK-code

PUK-code usually indicated:

• 📄 On the plastic carrier to which it was attached SIM-card.
• 📄 In the contract with the operator (if SIM-map was made in the salon).
• 📧 In an email address (if) SIM-card ordered online).

If you can't find PUK-code, contact the operator:

Step 2: Enter PUK-code

After three incorrect attempts to enter PIN phone will ask you to PUK-Do the following:

1. Enter the 8-digit PUK-code (it is case sensitive, but usually consists of only numbers).
2. The system will require you to install a new PIN-Come up with a code and type it twice.
3. If PUK-code entered correctly, SIM-card unlocked.

⚠️ Note: If you enter the wrong one 10 times in a row PUK-code, SIM-The card will be permanently blocked, and you'll have to replace it with a new one in the operator's cabin!

Step 3: If PUK-lost-code

If you can't find PUK-The only way out is to go to the operator with the passport:

• 📱 Replace SIM-card for a new (free or for a nominal fee).
• 📞 Restoring access via support call (required to answer control questions).

Some operators (e.g. Tele2) allow the recovery of the PUK-code through a personal account on the site if a phone number is tied to it.

Features of settings PIN-Xiaomi code with two SIM-map

If your Xiaomi smartphone supports two SIM-cards (Dual) SIM), It's important to remember that each card is customized separately. PIN-main-code only SIM-This is dangerous if the second card is used for work or tied to banking services.

To set up PIN-code SIM-map:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose the first one. SIM-map, SIM 1) and activate the Locking SIM-map.
3. Repeat the process for the second SIM-map (SIM 2).

Pay attention to the following nuances:

• 🔄 If you are using eSIM (virtual) SIM-The map can also be protected. PIN-The path to settings is the same.
• 📶 If one of them SIM-The card is used only for the Internet (no calls), PIN-The code is not installed on it – the risk of data theft is minimal.
• 🔋 When you turn on the phone, you will have to enter PIN-code SIM-This may take some extra time.

Common Mistakes and How to Avoid Them

When you set up PIN-code SIM-And these are the most common problems that people often face in a map, and the ways that they can be solved:

Another common mistake is using the same thing. PIN-code SIM-It's not safe, if an attacker picks up a code on one card, they can unlock the other card. SIM-map.

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If, after activation, PIN-When the mobile phone is gone, check if the “only” mode is turned on. 2G/3G» In network settings. Sometimes reset network settings (Settings) → SIM-map → Resetting network settings helps restore connection.

FAQ: Frequent questions about PIN-code-on SIM-mapping