Why the phone application on Xiaomi does not work: we solve the problem of calls

When the phone app on your Xiaomi smartphone suddenly stops working, it can be taken by surprise at the most inopportune moment: you try to dial a number and the screen just blinks, or calls are disrupted immediately after the beep. It's not just a minor inconvenience, but a critical failure that disrupts the basic function of the device.

The problem can be both a software conflict after updating the MIUI shell and a corruption of the application’s system files. Device owners often find that the interface does not respond to clicks, and the contact list is empty or not updated. In this article, we will discuss all possible causes and provide working instructions for troubleshooting.

Before you panic or bring your gadget to the service center, you should try a number of software recovery methods. In most cases (about 90%) the problem can be solved by yourself, resetting the cache or changing the settings of the network. SIM-cards in the engineering menu, since often the failure lies in the incorrect definition of the communication module by the system.

The main causes of failures in the work of calls

To understand why the Phone app on Xiaomi is not working correctly, you can only analyze the latest actions with the device. Often the culprit is an automatic update of the system, which may have been errors or conflict with installed applications, and you should also consider the memory wear that leads to incorrect reading of the subscriber book data.

Another common cause is memory overflows or access rights conflicts. Android, the underlying system of MIUI, strictly controls permissions, and if an application loses access to a microphone or contacts, it will stop functioning properly. Sometimes the problem lies in third-party "callers" that the user installed from the Play Market in an attempt to improve the functionality.

⚠️ Note: If the problem occurs immediately after installing a third-party launcher or theme, return the standard interface.

And the physical side of the matter is, you know, damage to the antenna module or oxidation of the contacts. SIM-The cards can simulate a software failure, and in these cases, the phone can show the network, but not initiate the connection. SIM-map - mandatory stage of diagnosis.

Basic cleaning of cache and application data

The most effective and safest way to solve the problem is to force the cleaning of the accumulated application data. Over time, temporary files accumulate in the Dialer system folder, which can become corrupted and cause cyclical reboots or interface freezes. This process will not delete your contacts if they are synchronized with your Google or Mi Cloud account, but reset the settings of the application itself.

To do this, you need to go to the application management menu. Find a system application that can be called Phone, Calls or Dialer. Depending on the version of MIUI, the path may be slightly different, but the logic remains the same for all Xiaomi, Redmi and POCO models.

Once you log into the storage menu, you'll see two buttons: Clear cache and Clear all (or Erase data) first, try cleaning the cache. If that doesn't work, use a full data cleanup. This will bring the app back to the "out of the box" state.

Once you do this, the phone will restart and the system will re-index the contacts. If the Phone app on Xiaomi has stopped working due to a software glitch, this step should eliminate the error. In rare cases, you need to repeat the procedure twice to fix the result.

Configure permissions and system restrictions

Modern versions of Android and MIUI have an aggressive power-saving system that can force the background processes of the Phone app to stop, believing them to be redundant, which leads to the incoming call not being displayed on the screen, or the application can not start for an outgoing call.

You need to manually check access rights. Make sure the application has permissions to access contacts, microphone, telephony and SMS. Without these basic rights, the call functionality will be limited or completely inoperable. It's also worth turning off battery savings for that particular application.

• 📱 Go to Settings. → Annexes → All applications.
• 🔍 Find the phone (green tube icon) in the list).
• 🔋 Click on Saving Charge and select No Limitations.
• 🛡️ In the Permits section, make sure that all items are marked as "Allowed".

Special attention should be paid to the notification settings, if they are disabled, you will not see an incoming call. The Phone app notification menu should allow lock and pop-up displays on the screen, which is critical for the call interface to work properly.

Resetting network settings and re-registration of SIM

If the application software didn't work, the problem could go deeper into network settings. A network failure often causes the phone to "see" the SIM card but not be able to register with the operator's network to make voice calls, especially when changing regions or after traveling.

Network resets are a safe operation that will bring Wi-Fi, Bluetooth and mobile back to factory values, and your personal files, photos and contacts will not be affected, but you will have to re-enter Wi-Fi passwords.

You can reset it through the settings menu. Find the connection and sharing section. There's a reset option. Once you reboot, the device will re-request the operator's settings, which often solves the problem of "the phone's Xiomy app is not working."

It is further recommended to remove SIM-So you can wipe the contacts with a pin and put them back in, and physical contact is often disrupted by dust or oxidation, which the system perceives as an application error.

Updating or rolling back system components

The Google Phone component and Xiaomi system services are regularly updated through the Play Market.Sometimes a new update contains bugs that cause unstable performance on specific models.If the problem started suddenly after the update, consider rollback or waiting for a fix.

Check for updates for all apps in the Play Market. make sure that the latest versions of Google Play Services and the Phone app are installed. In some cases, removing app updates through the settings menu helps, which will return it to the factory version built into the firmware.

For advanced users, you can log in to the engineering menu to check the status of the radio module. By entering the code ##4636##, you can go to the testing menu. There, under the "Phone Information" section, you can try to switch your preferred network type (for example, from LTE to GSM only and back) to force the module to re-register.

⚠️ Warning: Be careful in the engineering menu. Changing unknown parameters can lead to a complete loss of communication. Only change the network type settings if you understand what you're doing.

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If the phone application update causes errors, try installing its previous stable version from a reliable archive. APK-files, pre-deleting the current version.

Radical methods: resetting and flashing

When none of the above methods worked and the Phone app on Xiaomi still doesn’t work, the last software option is a complete factory reset.This action will remove all data from the device, so be sure to back up important files.

Reset eliminates any deep system conflicts that may have occurred during the use of the smartphone. If even after the reset the problem persists, it is likely that the hardware malfunction of the speaker, microphone or motherboard.

In complex cases, you may need to flash the device through your computer using the Mi Flash Tool, which will replace damaged system partitions with clean ones, but this is a complex procedure that requires an unlocked bootloader and certain skills.

• 🔄 Make a full backup of data to the cloud or PC.
• ⚙️ Go to Settings. → The phone. → Resetting settings.
• 🗑️ Choose to erase all data and confirm the action.
• ⏳ Wait for the process to be completed and the phone’s initial setup.

If that didn't work, you shouldn't go on with the experiments yourself, probably needing a plume replacement or a board repair at an authorized service center, and the software methods are already powerless.

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Consistent application of methods from simple cache reset to complete system reset solves 95% of software problems with calls.

Frequently Asked Questions (FAQ)