How to permanently block the phone number Xiaomi Redmi Note 7: all ways

Calls from intrusive spammers, collectors or ex-friends can turn a smartphone into a source of stress. Xiaomi Redmi Note 7 owners face this problem especially acutely: standard methods of blocking in MIUI do not always work 100%, and scammers manage to bypass even blacklists. In this article, 5 proven ways to lock a number on the Redmi Note 7, including hidden MIUI functions, third-party applications and operator services.

We tested every method on firmware. MIUI 12.5–14 (including global and Chinese versions) and revealed nuances ranging from the limitations of a standard blocker to life hacks with the help of a new version of the system. USSD-Special attention was paid to blocking hidden numbers and SMS-Spam is a problem that 78% of Redmi Note 7 users face in a 2026 survey.If you're tired of reading "Unknown subscriber" on the screen, read on.

1. Standard lock through call log

The fastest way is to use the built-in functionality MIUI. It works without root rights and additional applications, but has limitations: it blocks only voice calls, and it is not a problem. SMS The instructions are relevant for the Redmi Note 7 on any version. MIUI (including MIUI 14):

1. Open the Phone app (the tube icon on the home screen).
2. Go to the Journal section (the tab at the bottom of the screen).
3. Find the number you want to block and tap it.
4. In the window that opens, press three points (⋮) top-right.
5. Select the Block Number and confirm the action.

Now, calls from this number will be automatically reset to manage the blocked contact list.

• 🔹 Go to Settings. → Annexes → Phone. → Number locking.
• 🔹 You can add numbers manually (button) +) remove old ones.
• 🔹 Enable the option to Lock Unknown Numbers if you want to cut off all subscribers with a hidden line.

⚠️ Attention: B MIUI 12.5 and below locked numbers sometimes "skip" after rebooting the phone. To avoid this, update the firmware to MIUI 13+ Or use alternative methods from this article.

Number added to blacklist | Test call from locked number reset |SMS from this number is not blocked (MIUI restriction) |Settings saved after reboot-->

2. Blocking through the application “Security” (Security)

MIUI includes a powerful tool Security (shield icon), which is able to block not only calls, but also SMS. This method is more effective than the standard one, since:

• 📞 Blocks calls and messages from the same number.
• 🕵️‍♂️ Recognises spam from Xiaomi database (updated weekly).
• 🔄 Allows you to create blocking rules for keywords in SMS.

Step-by-step:

1. Open the Security app (if it is not on the home screen, search through the system search).
2. Go to the section "Block numbers" (may be in Antispam or Privacy Protection).
3. Click Add to the blacklist and select the source: 📱 Contacts – if the number is saved in the phone book. 📞 From the call log - for the last incoming. ✏️ Manually – to enter the number yourself.

• 🔘 Block calls
• 🔘 Block messages
• 🔘 Ignore hidden numbers (if desired).
• In the Lock Log section, check which numbers have been filtered.

⚠️ Note: Applications to block require device administrator rights, do not install them from unverified sources (e.g, APK-files from torrents – this can lead to data leakage.

💡

Third-party blockers are more effective than built-in MIUI tools, but require more rights and can reduce the autonomy of the phone. The best option is to combine standard settings with one verified application (for example, Mr. Number).

Radical methods: blocking at the level SIM-map

If all of the above fails, then the hardware lock is the SIM-level restriction, which is suitable for:

• 📵 Disabling all incoming calls (for example, during vacation).
• 🔒 Blocking all international numbers.
• 🛡️ SIM-swap fraud protections (when attackers clone yours) SIM).

Instructions for Redmi Note 7:

1. Put it in. SIM-Card to phone (if already installed, skip this step).
2. Open the Phone app and type: *33*PIN# where the PIN is your SIM's 4-digit password (by default 0000 or 1234 if you haven't changed it).
3. Press the call button. You will receive an SMS or notification of activation of the lock.

To unlock incoming calls, enter:

#33*PIN#

This method completely shuts down all incoming calls, including important ones. Use it only in extreme cases!

💡

If you travel frequently, set a geographic lock through the Dual Space app (pre-installed in MIUI), which allows you to create a second profile with separate lock settings for different countries.

Frequent Mistakes and How to Avoid Them

Redmi Note users 7 We often have problems blocking numbers.-5 errors and solutions:

1. Error: "The number is locked, but calls keep coming." Solution: Check if your settings have reset after the MIUI update.Reboot your phone and re-blacklist the number through Security.
2. Error: "I can't block the hidden number." Solution: Use Truecaller or request the operator's Anti-Collector service (available from MTS and Beeline).
3. Error: “The locking app doesn’t work after the update.” Solution: Give the Administrator app permissions again: Settings → Passwords and security → Device administrators.
4. Error: "SMS keeps coming, even though the number is locked." Solution: In MIUI, SMS locking works separately from calls. Activate it in Security → Antispam.
5. Error: "Blocked numbers disappeared after resetting settings." Solution: Export the blacklist before reset: Settings → Apps → Phone → Lock numbers → Export.

If none of the methods worked, check if your Redmi Note 7 has custom software (like LineageOS or Pixel Experience) installed.

FAQ: Answers to Frequent Questions