How to unlock your phone number on Xiaomi Redmi 8: all working methods

Xiaomi Redmi 8 remains a popular budget smartphone, but many users face the problem of locking the number – whether it is a restriction from the operator, an input error. PIN-code or software failure in MIUI. Unlike new models, where unlocking often requires contacting the service center, the Redmi 8 can still do without radical measures.

In this article, 5 current ways to unlock, including hidden SIM-manager functions, USSD-commands for popular operators (MTS, Beeline, Tele2, MegaFon) and bypass locking through the engineering menu, we will also discuss why a standard reset to factory settings does not always help and how to avoid re-blocking after successful access restoration.

All methods tested on firmware MIUI 10-12 (Android 9-10) and are relevant to Redmi 8 of all modifications, including versions with the new version NFC. If your phone is blocked because of PUK-code or hardware malfunction – at the end of the article there is a separate section with solutions for such cases.

1. Unlocking through standard SIM-manager MIUI

The easiest way is to use built-in tools. MIUI. It is suitable if the number is blocked due to multiple incorrect input. PIN-Important: the method only works when you are actively connected to the mobile network (even if calls are not available).

Instructions:

• 📱 Open the Settings app → SIM-maps and mobile networks.
• 🔄 Select the blocked SIM-card (if two of them).
• 🔓 Slip on the item Unlock. PIN (It could be called the Office. PIN).
• 📝 Enter. PUK-code (if required) or wait for automatic unlock (for operator time limits).

If you don't have PIN unlock, you have operator lock. Go to the next one.

⚠️ Attention: Don't try to guess PUK-After 10 wrong attempts SIM-The card will be permanently blocked and a replacement will be required.

Make sure that SIM-map inserted correctly|Check the signal level of the network|Have your hand on it. PUK-code (contained on a plastic carrier) SIM)|Connect to Wi-Fi to download updates MIUI (if necessary)

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2. USSD-commands to unlock from operators

Every Russian operator provides USSD-This method works if the number is blocked for non-payment, at the request of the user or due to suspicious activity:

If after the command is dialed, the message “Service is not available” comes, it means that the lock is hardware (for example, due to IMEI) or you need to contact the communication salon with a passport.

MTS|Beeline|MegaFon|Tele2|Yota|Other |I don't know-->

3. Network settings reset (without data loss)

Sometimes the number is blocked due to a malfunction in the mobile network settings, in which case a partial reset helps, which does not affect photos, applications and contacts, but returns the network settings to factory settings.

How to do this:

1. Go to Settings → System and device → Additional → Resetting.
2. Select Reset Network Settings (not to be confused with Reset to Factory!).
3. Confirm the action and wait for the reboot.
4. After insertion, enter PIN-code again – often the lock is removed.

This method is effective if the problem occurred after updating MIUI or installing custom firmware. If it did not work, go to the engineering menu.

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Write down before resetting. APN-You have to re-enter your operator's settings after the procedure. → Mobile network → Access points (APN).

4 Unlocking through the Engineering Menu (for Advanced)

Redmi 8’s Engineering Menu Allows Manual Control of Parameters SIM-The danger of the method: wrong actions can lead to loss of the network. Use only if other methods have not worked.

Step-by-step:

1. Open the phone app and enter the combination: ##4636##
2. In the menu that opens, select Phone Information.
3. Scroll down to the SIM Information block.
4. Press the blocked one. SIM-map and select Unlock SIM (if the option is active).
5. Reboot the phone.

If the Unlock SIM No, that means operator-level locking or hardware locking, and then only a replacement will help. SIM-card-to-service.

⚠️ Warning: Don't change other options in the engineering menu! this can lead to loss IMEI or unstable network operation.

5. Hardware unlocking (if nothing helps)

If all software methods are exhausted and the number is still locked, the problem may be:

• 🔌 Malfunctions SIM- slot (oxidation of contacts, mechanical damage).
• 📱 Damage to the communication module (often after falls or moisture infestation).
• 🔒 Locking by IMEI (If the phone is on the operator’s blacklist).

In such cases:

1. Check it out. SIM-Map on another phone – if it works, the problem is in the Redmi 8.
2. Clear the contacts. SIM- Slot with alcohol and soft brush (do not use metal objects!).
3. Contact the service center for the diagnosis of the communication module (repair cost - from 1,500) ₽).

If the phone is locked, IMEI (For example, due to theft or non-payment of a loan, unlocking is possible only through the operator or official service of Xiaomi. IMEI prosecuted.

6. How to avoid re-blocking the number

To avoid the problem again, follow the following simple rules:

• 🔐 Keep it. PUK-code in a secure location (e.g., in Google Keep notes with encryption).
• 📵 Don't enter. PIN-code at random - after 3 wrong attempts, the card is blocked.
• 🔄 Update. MIUI — In new versions, bugs with locks have been fixed SIM.
• 🛡️ Use official firmware – custom builds may conflict with the communication module.

If you travel frequently, turn off the request. PIN-code when turning on the phone (in Settings) → Lockdown and protection → Settings SIM-This will reduce the risk of accidental blocking.

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The most common reason for blocking Redmi 8 is failure after the MIUI update. Always back up before installing new firmware versions.

FAQ: Frequent questions about unlocking Redmi 8