Personal data protection starts with basic things – for example, setting a PIN code on a computer. SIM-If your Xiaomi smartphone works with the operator's SIM Tele2, But the access code is not requested when you turn it on, which means that the function is disabled, and leaving it in this state is dangerous, because if you steal or lose your phone, attackers can call, send messages. SMS Or even use a mobile bank if it is tied to a number.
In this article you will find a step-by-step instruction for activating a PIN code for Tele2 on any Xiaomi smartphone – from budget Redmi to flagship Mi and POCO. We will analyze the nuances for different versions of the shell MIUI (12, 13, 14), how to reset the code if you forget it, and how to avoid common errors, and how to answer common questions, such as why the phone asks for it. PUK-code instead of PIN and what to do if the SIM is blocked.
Now, let's just say, it takes 2-3 minutes, but it takes attention. If you type the wrong PIN three times in a row, the SIM card is the one that you need. Tele2 It will be locked and you will need to unlock it. PUK-code (you can find it on a plastic SIM holder or request it from the operator) so make sure you have the original card packaging or access to your personal account on hand before you start. Tele2.
Why you should put a PIN code on SIM-map Tele2
Many users neglect to protect the SIM card, believing that locking the screen is enough, but the PIN is a separate layer of security that works even if the phone is turned off or discharged.
- 🔒 Without a PIN, anyone who finds or steals your phone can call, write. SMS Use the mobile internet at your expense.
- 💳 Security of financial transactions: If a mobile bank (Sberbank, Tinkoff, etc.) is linked to a SIM, attackers will be able to confirm transfers through the SIM. SMS.
- 📱 Compatibility with corporate policies: some companies require mandatory protection SIM-Cards for employees working with confidential data.
- 🔄 Reset protection: If you sell or transfer a phone, a PIN-free SIM will remain vulnerable even after Xiaomi resets to factory settings.
Tele2 defaults to disable PIN requests when you first turn on a SIM card, which is for user convenience but reduces security, and the standard PIN for new Tele2 SIM cards is "0000" or "1234," but it can and should be changed to a more reliable one.
It's important to understand that the SIM PIN and the lock screen password are two different protections, and even if you have a fingerprint or face unlock set up, the SIM will remain unprotected without a PIN.
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If you travel frequently, set a PIN on Tele2 SIM before traveling. In some countries (e.g. UAE or China), local operators can block foreign cards without protection.
Preparation: What to Know Before Installing a PIN Code
Before you start setting up, check out a few key points:
- 📋 Make sure the SIM card is active. Tele2, It must be activated first (usually automatically when you make the first call or connect to the Internet).
- 🔢 Know the standard PIN, usually a 0000, 1111, or 1234, and if you've changed it before but you've forgotten, you'll have to call in support. Tele2.
- 📱 Check the version. MIUI. The path to settings may differ in different shells: MIUI 12, MIUI 13, MIUI 14.
- 🔋 Battery charge: Make sure the phone has enough charge (at least 20%) to avoid a sudden shutdown during setup.
If you've never set a PIN on this SIM card, it's probably disabled. To check this, reset your phone, and if you don't request a code entry, the protection is actually deactivated.
It’s also worth considering that some Xiaomi models (such as the POCO F5 or Redmi Note 12 Pro+) support dual SIM cards, in which case the PIN is set up separately for each.
⚠️ Note: If you enter the wrong PIN three times in a row, the SIM card Tele2 It's locked. It'll take a lot to unlock. PUK-The code (8 digits) that is on the plastic SIM holder, if you lose it, you can only recover it through operator support (call from another number or contact the communication salon).
Step-by-step: how to install a PIN code on Tele2 in Xiaomi
The PIN activation process is the same for most Xiaomi models, but may vary slightly depending on the version of MIUI. We will look at a universal method that works on MIUI 12-14.
Step 1. Open Settings (the gear icon on the desktop or in the application menu).
Step 2. Go to section SIM-Maps and mobile networks (in some versions may be called Mobile Network or Dual Network) SIM mobile).
Step 3: Select Tele2 SIM card (if you have two SIM cards, tap the one you want) and it will open up the settings menu.
Step 4. Find the Locking Point SIM-card (or PIN request) and move the slider to the right to activate the function.
Step 5: The system will request the current PIN, and if you haven't changed it, try the standard combinations:
0000
1111
1234
8888Step 6: Once you have successfully entered, you will see a window to change your PIN, come up with a new 4-digit combination (don't use dates of birth or simple sequences like 1234 or 2580) and enter it twice for confirmation.
Step 7: Restart the phone to make the changes effective, and the next time you turn on, the system will request a new PIN.
Remember a new code or write it in a safe place
Make sure that the SIM is detected on the network (there is a signal)
Check that the internet and phone calls are working
Save. PUK-lock-in-->
If after the reboot the phone does not see the network or asks you to enter the PIN indefinitely, try to remove and re-insert the SIM card. Sometimes the contacts are oxidized, and the system can not read the data correctly.
Features for different versions of MIUI
Depending on the firmware version, the path to PIN settings may vary, and below is a comparison table for popular versions of MIUI:
| MIUI version | The path to settings | Features |
|---|---|---|
| MIUI 12 | Settings → SIM-maps and mobile networks → [choose SIM] → Lockdown SIM-map | The interface may be different on older models (e.g. Redmi 8). |
| MIUI 13 | Settings → Mobile Network → [select SIM] → Request PIN code | Added support for eSIM (for models Xiaomi 12T Pro, 13 Lite, etc.). |
| MIUI 14 | Settings → Dual SIM and Mobile Network → [select SIM] → SIM Lock | More intuitive interface, but on some devices, the item may be hidden in Additional settings. |
| MIUI for POCO | Settings → SIM-maps and networks → [choose SIM] → Lockdown SIM | The POCO F4 GT and POCO X5 Pro may require a firmware update to work properly. |
If you do not find the right item in the settings, try using the search (the magnifying icon in the upper right corner of Settings). Enter the request "PIN" or "SIM lock" - the system will tell you the right way.
On some models (such as the Xiaomi 11T Pro), a power-enhancing notification may appear after activating the PIN code, which is normal: the phone spends a little more charge checking the code each time it is turned on.
⚠️ Note: If after the update MIUI PIN is no longer requested, reset your network settings. → SIM-maps and mobile networks → Network reset. It won't delete your data, but it will return the communication parameters to the factory.
What to do if I forgot the PIN code or the SIM card is blocked
It's a common situation where the user forgets the PIN, and if you typed the wrong combination three times, the SIM card is the one that you're using. Tele2 It is blocked and a request will appear on the screen. PUK-Here's what to do in these cases:
- 🔍 Find it. PUK It's usually on a plastic SIM card holder next to the PIN (8 digits).
- 📞 Call support. Tele2. From another phone, dial 611 (free) and follow the instructions of the voice menu, you will need to give the number of the blocked SIM and passport information.
- 🌐 Restore it through your personal account. Tele2, log in and go to the "Management" section SIM-card».
- 🏢 Get your passport and visit the nearest office. Tele2 — They will help to unlock the SIM or release a duplicate.
If you can't find PUK-Do not remember the PIN, do not try to guess the combination - after 10 incorrect attempts to enter PUK The SIM card will be locked forever, and you'll have to change it, and then the only way out is to order a duplicate in the cabin. Tele2 (cost - about 100-150 rubles).
To avoid such situations in the future:
- Take a photo of the plastic SIM card holder and save the photo in a secure location (for example, in Xiaomi Notes with a password).
- Use password managers (like Google Password Manager or KeePass) to store PINs and PUKs.
- Do not store codes in plain text on your phone (such as in SMS or contacts).
What if Tele2’s SIM is permanently blocked?
Frequent Mistakes and How to Avoid Them
When installing a PIN code on Tele2 in Xiaomi, users often face typical problems, and let’s analyze the most common ones and ways to solve them:
- 🔄 The phone doesn't ask for a PIN after the reboot. Reason: the function wasn't saved. Solution: Reconfigure the setting and make sure that after you enter the code, you have a notification of successful activation.
- 📵 No network after PIN installation, reason: SIM card is incorrectly inserted or damaged Solution: remove and insert it again, if necessary, clean contacts with a smoother.
- 🔢 The system does not accept the standard PIN ("0000"). Cause: the code has already been changed. Solution: call in support Tele2 discharged.
- 🔋 The phone discharges quickly after activation of the PIN. Cause: background code check. Solution: disable automatic reboot in Settings → Advanced settings → Reboot.
Another common mistake is the confusion between the SIM PIN and the lock screen password, which are not linked together, for example, if you reset the pattern lock through Find My Device, the SIM PIN will remain the same.
If after all the manipulations the phone still does not see the network, check:
- Flight mode is enabled (turn it off in the notification curtain).
- Is the SIM card active in settings (Settings) → SIM-map → [choose SIM] → Turn on).
- Are there any IMEI restrictions (check if the phone is locked by the operator)
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If after installing the PIN code, the mobile Internet disappeared, check it. APN-settings. Tele2 They should be like this — «Tele2 Internet», APN — «internet.tele2.ru», Leave the remaining fields by default.
Additional Safety Advice SIM-map Tele2
Setting a PIN is just the first step to protecting your SIM card, and here are some more tips to help avoid problems:
- 🔄 Update your firmware regularly. MIUI SIM card security vulnerabilities are being fixed. Check for updates in Settings → The phone. → Updating the system.
- 📱 Use eSIM (if supported); Virtual SIMs are harder to copy or steal. eSIM is available in Xiaomi 12T Pro, 13 Lite and other flagships.
- 🔒 Activate two-factor authentication in your personal account. Tele2 You can link an email or an additional number to restore access.
- 📡 Disable automatic connection to open networks. This will reduce the risk of interception of SIM card data via public Wi-Fi. → Wi-Fi → Additional settings → Smart connection.
If you use a mobile bank frequently, consider turning off the service. SMS-Notifications of transactions or push notifications via the bank’s app will reduce the risk of interception of the confirmation code even if the SIM is stolen.
For Xiaomi owners with the Second Space feature (on MIUI 13/14), it is important to remember: the SIM card PIN code is valid for both spaces. That is, if you block the SIM in the main profile, it will be blocked in the second one.
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If you plan to sell or transfer your Xiaomi, be sure to disable the PIN on the Tele2 SIM before resetting, otherwise the new owner will not be able to use the phone without your code.