How to turn it on PIN-code SIM-Map in smartphones Xiaomi Redmi: protection from theft and hacking

Losing or stealing a smartphone is a situation that anyone can face. Even if you have a locking screen set up, attackers can extract from the device. SIM-Map and access your calls, SMS (including bank confirmation codes) or intercept incoming messages PIN-code SIM-The card is an additional layer of protection that blocks the mobile network until the correct code is entered. On Xiaomi Redmi smartphones (including Redmi Note 12, Redmi models). 13C, POCO X5 The activation process takes less than a minute, but many users do not know where this setting is located.

In this article you will find a step-by-step guide with pictures, an explanation of why. PIN-The code is more important than it seems, and the answers to the common questions of what to do if you forget the code, how to reset it, and the risks of disabling protection. PIN and PUK-codes, let's deal with the settings of the double SIM And we'll give you some advice on how to choose a strong password, and if you've never turned it on, now is the time to fix this!

Why do you need it? PIN-code SIM-map in 2026?

Many Xiaomi Redmi users neglect protection SIM-But statistics suggest otherwise: Kaspersky says that in 2023, 37 percent of identity thefts began with interception. SMS-codes through stolen or substituted SIM-That's why. PIN-code:

• 🔒 Locking upon extraction SIM: No PIN-The attacker will not be able to use your card on another phone.
• 📱 Cloning Protection: Fraudsters will not be able to activate duplicates SIM codeless.
• 💳 Banking security: Even if your phone is stolen, SMS Confirmation codes will remain unavailable.
• 🔄 Compatibility with eSIM: PIN It also works for virtual SIM-Maps in the new Redmi models.

It is important to understand that PIN-Code is not the same as a lock password, even if your Xiaomi is protected by a pattern lock or a fingerprint, SIM-The card remains vulnerable without separate protection, such as in Redmi Note 11 and older models. SIM You can take it out in 10 seconds, but without it. PIN-It is immediately used in another device.

⚠️ Note: If you use two of these SIM-cards (Dual) SIM), PIN-You need to set the code separately for each card!

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

Before you turn on the protection, you need to know the original PIN-code SIM-It's on the plastic media that the card was attached to when you bought it, and if the card is lost, there are several ways to recover the code:

Standard. PIN-The code for most Russian operators is a combination of 4 digits, often coinciding with the last digits of the phone number or the date of activation of the card (for example, 0000, 1234, 1111.

⚠️ Note: If you enter the wrong PIN-code 3 successively, SIM-The card will be blocked and will require PUK-unlockable. PUK is indicated on the same plastic carrier or issued by the operator. 📊 Have you ever lost your phone with SIM-Yes, but there were no consequences No, but I am afraid of such a scenario No, and I do not worry Step-by-step instructions: how to turn on PIN-code SIM-The process of activation of protection is the same for all Xiaomi Redmi models based on the MIUI 12/13/14, including Redmi 10, Redmi Note 12 Pro+, POCO F5 And then you can follow these steps: Open the Settings app (the gear icon on the home screen). Scroll down and select Passwords and Security. Slip on Settings. SIM-Cards (some firmware may be called Security) SIM). Choose. SIM-map for which you want to include PIN (If you have a Dual SIM). Activate the Request Switch PIN-Enter the current code. PIN-Click Ready - Protection is on! Once activated, the phone will request PIN-code at each inclusion or reboot, and after extraction/pasting SIM-If you use eSIM (e.g. in Redmi) K60), The path to settings will be similar, but instead of physical SIM You can choose virtual. I know the standard. PIN his SIM-map|I have a spare. PUK-code (in case of lockdown)|The phone is charged (to avoid interrupting the process)|I remember the password from the Mi Account (to restore settings)--> If your Xiaomi Redmi does not have a Settings point SIM-maps in Passwords and Security section, try an alternative path: Settings → Connections and sharing → SIM-maps and mobile networks → [Choose. SIM] → Request. PIN-How to change code PIN-code? Standard. PIN-Codes like 0000 or 1234 are easy to crack, and we recommend changing it to a unique combination. → Passwords and security → Settings SIM-- You can choose your own card. SIM-Map and tap on item Change PIN-Enter the current code. PIN (The one that's working now. Come up with a new one. PIN (4-8 digits, no spaces. Confirm the new code and save the changes. PIN-code: 🔢 Avoid repeating numbers (1111, 2222). 📅 Do not use your birthday or anniversary. 🔀 Do not sequence (1234, 4321). 🔑 The best is a random combination, such as 7492. 💡Write down a new one. PIN-code to a secure location (e.g., Google Keep notes with encryption) or save it to the password manager (1Password, Don't keep it in your pocket. SMS Or on a paper in your wallet! PIN-code? If you entered incorrectly PIN-code three times, SIM-The card will be blocked and will require PUK-Personal Unblocking Key (PIC) is a code that consists of 8 numbers and indicated on the plastic carrier SIM-If the carrier is lost, restore it. PUK possible: 📞 Calling in support of the operator (passport required). 🌐 Through the personal account on the operator's website (section "Management" SIM"). 🏢 In the salon (with a passport). 10 once you've entered it wrong PUK, SIM-The card will be permanently blocked and require replacement, in which case the operator will issue a new card with the same number, but all the old ones are not available. SMS and contacts saved on SIM, What happens if you don't enter? PIN-- If you ignore the request, then you'll be able to reboot the code. PIN-code after switching on the phone, SIM-The card won't work until you type the right combination (3G/4G/5G). - No way to call or receive calls. - SMS They will not be able to reach you. – Apps that require confirmation of the SMS (banks, social networks, they'll stop working. PIN, neither PUK, The only way out is to replace SIM-The procedure is free, but takes time (from 10 minutes to a day, depending on the operator). SIM You just need to insert a new card, and all the network settings will automatically reset. PIN-code PUK In order not to get confused in terms, we will understand what the main types of protection differ. SIM-Cards and phone: Type of protection Assignment Length Where stored What if you forget? PIN-lock-in SIM-4-8 digits cards SIM-map 3 wrong attempts → lockdown PUK-unlock code PIN 8 digits The operator has 10 wrong attempts → SIM Screen password is dying Phone 4 lock+ Symbols In phone memory Reset via Mi Account pattern lock Alternative to password 4–9 points In phone memory Reset via Recovery It is important to understand that PIN-code protects only SIM-If an attacker gets access to an unlocked Xiaomi Redmi, he can: 📸 Copy your photos and videos. 💰 Use saved passwords from banking applications. 📧 Read emails or messages in messengers. PIN-code SIM — It's only part of the security system: 🔐 Enable phone encryption (Settings) → Additionally. → Encryption). 🆔 Linking a Mi Account for remote management. 🔄 Update regularly MIUI (fixing vulnerabilities). 💡PIN-code SIM-The card does not replace the lock password, but complements it. + Two-factor authentication in important services. PIN-Xiaomi Redmi with Dual SIM If your Xiaomi Redmi supports two physical SIM-maps (or combination of nano-SIM) + eSIM), PIN-The code is customized separately for each slot: 📱 Each SIM has PIN — They can be turned on/off independently. 🔄 When restarting, the phone will ask PIN for each active SIM. 📶 If one SIM blocked (infidel) PIN), The second one will continue. 🔧 In the settings you can see which SIM In which slot (Slot 1 and Slot 2) for example, in Redmi Note 12 Pro+ With two nano-SIMs, you can: PIN first-hand SIM (The second one is left unprotected (for the Internet). Use different things PIN-codes for each card (recommended). PIN on both cards (not recommended) if you use eSIM + physical SIM, For example, in Xiaomi 13 Lite: Go to Settings → SIM-Maps and mobile networks. Select eSIM or Physical SIM. Activate the request PIN-map-code. ⚠️ Note: If you delete your eSIM profile (for example, through Settings) → Mobile network → Delete eSIM), all data including PIN, To restore the eSIM, you will need to download the profile again from the operator. FAQ: Frequent questions about PIN-code on Xiaomi Redmi ❓ Can the request be deactivated? PIN-- Yes, but it's not recommended if you turn off the request, SIM-The card will be vulnerable to attackers. To deactivate the protection, go to Settings → Passwords and security → Settings SIM-maps and turn off the switch Request PIN-code. ❓ What to do if the phone asks for PUK-If you lost the code, it's not? PUK-code, contact the operator: 📞 Call support (numbers: *111# for MTS, *555# for Beeline). 🌐 Restore through your personal account (access to the attached mail is required). 🏢 Visit the passport communication salon. PUK mis-entered 10 times, SIM-The card is permanently blocked – a replacement will be required. ❓ Does it work? PIN-code SIM-- In the air, in the air, in the air. SIM-The card is off, so PIN-The code is not requested when the mode is turned on or off, but after the phone is fully restarted (even in airplane mode) PIN need to be. ❓ Can I put it? PIN-code SIM-- A computer card? PIN-This code is only possible through the phone menu. No PC software (like Mi). PC Suite), nor the web interfaces of operators do not allow remotely to enable or change PIN. ❓ Does it affect? PIN-- The code for network speed or battery consumption, PIN-code doesn't affect: 📶 Internet speed (3G/4G/5G). 📞 Quality of communication. 🔋 Battery consumption. 📱 The only inconvenience is having to enter the code after you reboot, but it takes a lot of time. 5–10 seconds.