When Xiaomi stops accepting incoming calls, it often takes the user by surprise: the screen may stay black, or the subscriber will hear the beeps, but notifications will not appear. This is a common problem in the shell of MIUI and HyperOS, which is solved by software methods.
The reasons can range from accidental activation of the Do Not Disturb mode to system errors in the communication module. In most cases, you do not need to contact the service center. SIM-map.
In this article, we will discuss all possible blocking scenarios, learn how to clear the blacklist, disable spam filtering and restore the network, follow the instructions carefully so that you do not miss the important step.
Checking the “Do Not Disturb” mode and blocking
The first thing you need to do is make sure that the phone is not in a special silent mode. Android allows you to completely ignore incoming signals if you activate the Do Not Disturb function. In this state, the screen may light up, but there will be no sound or vibration.
To check status, lower the notification curtain from top to bottom. Find the crescent icon. If it's illuminated, it means mode is active. Click on it to deactivate. It's also worth checking your schedule settings so that your phone doesn't block calls automatically at certain times of the day.
Sometimes users accidentally add important contacts to a blacklist, which is often the case with third-party number detectors or antiviruses, check the list of blocked subscribers in the Security app or in the standard Caller.
- 🌙 Open the control panel and make sure the "Do Not Disturb" mode is off.
- 📞 Go to the call settings and check for no active redirects.
- 🚫 Check the blacklist for important contacts.
- 📶 Make sure data and cellular are enabled.
⚠️ Note: If you are using a corporate SIM-The card, the restrictions can be set at the operator level, and then the phone settings won't help, you need to call the provider's support.
Blacklisting and spam filtering
MIUI has a powerful built-in antivirus and call filter, and its algorithms sometimes work too aggressively, labeling legitimate calls as spam, which is one of the most common reasons why Xiaomi doesn’t call specific numbers.
To manage locks, open the Security app (green lightning icon) go to Antispam or Blacklist, where you can see all the locked numbers and filtering rules. If you see the right number on the list, just delete it from there.
It is also worth checking your filtering settings for keywords or hidden numbers, and often locking is on all Hidden Numbers, which prevents you from taking calls from doctors, couriers or delivery services who hide your ID.
☑️ Checking the anti-spam settings
In some versions of the firmware, call settings are placed in a separate menu. The path can look like Settings → Apps → System applications → Phone → Lock. Here you can set up spam reactions and allow calls from contacts.
What if the number is not on the list, but the calls are not coming?
Reset network settings and reconnect SIM
If software locks are not found, the problem may lie in the network parameters, a failure in the registration of the device in the operator's network leads to the fact that the incoming call simply does not reach the phone, in which case the reset of the network will help.
This operation will not delete your personal files, contacts or photos, but will return to factory values the parameters of Wi-Fi, Bluetooth and mobile communication, and after restarting the phone will be re-registered in the network of the operator.
Physical reconnection SIM-The contacts could have oxidized, or the map itself could have shifted slightly when it fell. SIM-cards with a soft cloth and insert back before clicking.
| Action. | The way is on the menu | The result |
|---|---|---|
| Resetting network settings | Settings → Connections and Sharing → Reset Wi-Fi, Cellular Networks and Bluetooth | Update of registration on the network |
| Change of network type | → SIM-maps and mobile networks → Network type | Forced transition to 4G/3G |
| Choice of operator | Settings → SIM-cards and mobile networks → Communication operators | Manual search for available towers |
Try to temporarily switch network mode. If your phone is set to 5G/LTE, but your coverage is unstable, calls may be lost. Switch to 3G/2G for check. If the calls go, then the problem is LTE coverage.
Cleaning the cache of the “Phone” application
The system application that handles calls may not work properly due to accumulated debris or corrupted temporary files, which is common for devices that are used for long periods of time without reinstalling the system.
To fix the bug, clear the cache and application data. Go to Settings → Apps → All apps. Find the phone (pipe icon) list. Click on it and select Clear → Clear cache and Clear all data.
Important: Cleaning up all phone data will delete your call history, but will not affect your contacts if they are saved to your Google account or on your phone. SIM-After this procedure, the phone can run a little slower on the first calls until the cache is re-formed.
If the problem persists, try updating the Google Phone or MIUI Dialer app through the Google Play store or GetApps. Developers often release patches that fix carrier-specific compatibility bugs.
- 🧹 Find the phone app in the settings.
- 💾 Click on “Clear Data” and confirm the action.
- 🔄 Restart the device to apply changes.
- 📲 Check for updates in the app store.
⚠️ Note: Do not delete the Phone system app completely unless you have an alternative call, which may make it impossible to make calls at all.
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If the problem is not solved after the data reset, try installing a third-party call, such as Truecaller or Simple Dialer, and assigning it to the default application.
Verification SIM-operator's cards and services
Sometimes the reason is trivial: you run out of money on your account or the operator is doing the technical work, even if you have an unlimited tariff, you have to check your balance, and you may have lost your APN settings or network type.
Try inserting yours. SIM-If the phone doesn't go there, the problem is on the operator's side or on the card itself. If the other phone works, then it's your Xiaomi settings.
Outdated. SIM-card (especially issued more than one) 5-7 It may not work properly in modern networks. 4G. Operators change old cards for new ones for free with support for modern safety and speed standards.
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Replacement of the old SIM-The new card in the cabin of the operator solves 90% of problems with unstable signal and missed calls.
Also check if the service is activated Antispam or Parental Control at the tariff level, these services can block incoming numbers from unknown numbers, you can turn them off through the operator's application or USSD-team.
Radical methods: resetting and flashing
If none of these methods worked, there may have been a lot of critical errors in the system, in which case a full factory reset is considered, which will put the phone back in a boxy state.
Before resetting, make sure to back up all the data. Use the Mi Cloud or Google Drive cloud. After the reset, the phone will need to be reconfigured, logged in and restored.
In extreme cases, when even a reset doesn’t work (which is rare), it requires flashing the device through the computer, a complex procedure that requires drivers, Mi Flash Tool utilities, and official firmware for your model.