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

Protection SIM-map PIN-code is a simple but effective way to prevent unauthorized use of your number, even if the phone falls into the wrong hands, without the right number. PIN-The attacker will not be able to make calls, send SMS Or use the mobile Internet. In smartphones Xiaomi, Redmi and POCO This function is configured in just a few taps, but many users face difficulties: they can not find the desired section in the menu, forget the standard one. PIN or face a mistake "PUK blocked".

In this article, we will discuss all the ways of activation. PIN-protect SIM-map in Xiaomi devices (including models on the MIUI 12/13/14 HyperOS, and I will explain how different it is. PIN from PUK, And what to do if you forget the code, and you'll also learn how to turn off the request. PIN With every turn on the phone, without sacrificing security, instructions will be suitable for all modern smartphones of the brand: from the budget Redmi Note. 12 before Xiaomi's flagships 14 Ultra.

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

Many users neglect the installation PIN-But there are at least 5 good reasons to include this feature:

• 🔒 Protection against theft of a number. PIN-The attacker can take yours out. SIM-card, insert into another phone and use the number for fraud (for example, resetting accounts in banks or social networks).
• 📱 Locking down when you lose your phone, even if your phone is stolen, SIM-The card will remain locked until the correct code is entered.
• 💳 Preventing unauthorized payments. Many banks are tethering SMS-phone-notification. PIN-The code protects against connecting paid services without your knowledge.
• 🔄 Data security when flashing, if you drop your phone to factory settings or sew custom firmware, SIM-map will remain protected.
• 🚫 Protection against SIM-swap attacks: Fraudsters often use duplicates SIM-card-stealer. PIN-code makes this task more difficult.

It is important to understand that PIN-code protects only SIM-For complete security, it is recommended to use an additional pattern lock, fingerprint or facial scanner: PIN-The code is requested only when the phone is turned on or rebooted, but not when the screen is unlocked.

Where to find the standard PIN-code SIM-map?

If you've never changed PIN-the code, then by default it is indicated on the plastic holder (card), to which your card was attached SIM-It's usually a 4-digit code, located next to a barcode or under a protective layer:

• 📋 On the back of the package SIM. Most often. PIN lettered "PIN1" or "PIN Code".
• 📄 In the documents from the operator. SIM issued in the salon, the code could be specified in the contract or check.
• 📧 V SMS Some operators (e.g. Tele2 or Iota) send PIN-code in the message when activating the card.

If you haven't found the package or the documents, don't panic. PIN-The codes often match the last digits of the phone number (e.g., 1234, 0000, 1111 or 1230).However, never use obvious combinations like date of birth - they are easy to match.

⚠️ Note: If you enter the wrong 3 times in a row PIN-code, SIM-The card will be blocked and will require input PUK-It can also be found on the packaging. SIM You can ask the operator, and be careful, after 10 failed attempts to enter. PUK The card will be permanently blocked!

Step-by-step instruction: how to turn on PIN-code SIM-map

Activation process PIN-The protection is the same for all Xiaomi smartphones, regardless of the model, the difference can only be in the location of menu items depending on the version of the shell (MIUI or HyperOS. Follow this instruction:

1. Open the Settings app (the gear icon on the desktop or in the application menu).
2. Scroll down and select a section. SIM-Maps and mobile networks (in some versions) MIUI It can be called a mobile network or a dual network. SIM).
3. Tap your name on it. SIM-maps, for example, SIM 1 (MTS) or SIM 2 (Beeline)).
4. Find the locking point. SIM-Cards (in HyperOS may be called Protection) SIM) and move the slider to the right to activate the function.
5. In the window that appears, enter the current PIN-code (default or your personal code if you have changed it) If the code is entered correctly, the protection will be turned on.

After activation, the phone will request PIN-code every time you turn on or reboot. SIM-Repeat the procedure for each card separately.

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If you have Xiaomi with HyperOS, the path to settings may be slightly different.Try an alternative route: Settings → Connections → SIM-map → Lockdown SIM

How to change PIN-code SIM-map?

Standard. PIN-The code (e.g., 1234) is easy to remember, but also easy to match, and to improve security, it is recommended to change it to a unique combination:

1. Go to Settings. → SIM-Maps and mobile networks and select your SIM.
2. Tap on item Change PIN-code (or change) PIN hyperOS).
3. Enter the current PIN (the one that is currently in effect).
4. Think of and type a new PIN (from 4 to 8 digits) and avoid obvious combinations like 1234, 0000 or date of birth.
5. Confirm the new code by entering it again.

After the change PIN-Make sure to write it down in a safe place (for example, in a password manager or on paper in a safe). Do not store the code in your phone's notes - if the device is stolen, the attacker will gain access to the device. SIM-map.

⚠️ Note: If you forget a new one PIN-I'll have to call the operator to unlock it with the help of the code. PUK or order a new one SIM-Some operators (e.g. MegaFon) allow you to change the card. PIN through USSD-team (*105*00#), But it doesn't always work.

What to do if you forgot PIN-code?

If you entered incorrectly PIN-code 3 times, SIM-The card will be blocked and will require input PUK-Personal Unblocking Key: Here's what to do in a situation like this:

• 🔢 Find it. PUK-It's listed on the package. SIM near PIN If there is no package, ask for the code from the operator (see spoiler above).
• 📱 Enter. PUK After the lockdown, PIN The system will then introduce an 8-digit PUK.
• 🔄 Install a new one. PIN. After successful entry PUK The phone will ask you to come up with a new one. PIN-code.

If you can't find PUK or incorrectly entered 10 times, SIM-The card will be permanently blocked, and you'll have to contact the operator for a new card, and some operators, like MTS or Beeline, allow you to re-enter the number to a new card. SIM without loss of balance and services.

How to disable the request PIN-code when turning on the phone?

If you are annoyed by the need to enter PIN-The code is turned off every time you turn on your smartphone, but remember, it reduces your security. SIM-To deactivate the request:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Find the SIM-card lock and move the slider to the left (to the off position).
4. Enter the current one. PIN-proof-code.

After that, the phone will stop asking. PIN when switched on. SIM-The card will be completely disabled – anyone who pulls out your card will be able to use it.

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Shutdown PIN-The request does not affect the operation of the mobile network, but makes your number vulnerable to fraud.

Frequent errors and problems with PIN-Xiaomi-coded

When you set up PIN-And when you look at security, you often have common mistakes, and you look at the most common ones and the ways that you can solve them:

If none of these methods worked, try re-inserting and re-inserting. SIM-You can test it on a different phone, and in rare cases, it could be a chip damage. SIM — Then you will need to replace the card.

FAQ: Answers to popular questions