Xiaomi smartphone owners often face a sudden system notification that says the com.android.phone app has stopped working, a fatal failure that can occur at the most inopportune moment: during an important call, when trying to set up a mobile Internet, or even just when you turn on your device. Ignoring this problem often leads to a complete lockdown of the SIM card and the inability to make outgoing calls, which turns a modern gadget into a useless piece of plastic.
The reason lies in the work of the system component, which is responsible for the processing of telephony and interaction with the system. SIM-In the Android operating system, this process is critical, and its malfunctioning is indicative of a deep conflict between the software or the hardware. MIUI The situation is exacerbated by aggressive memory optimization, which can force the necessary background services to shut down, causing a cascade of errors.
There are many ways to bring your phone back to life, from a simple reboot to a complete reset. Below we will look at all possible solutions, from the safest to the most radical measures, and it is important to act consistently so as not to aggravate the situation and not lose important data.
The main reasons for the failure of the system process of telephony
Before you start taking action, you need to understand the nature of the error, and most often the problem is a software conflict caused by a recent firmware update or an incompatible application, and the system tries to access resources that have been changed or deleted, causing the process to drop instantly.
Another common cause is cache damage or incorrect access point settings. APN. If the operator's profile is confused, the communication module cannot correctly register on the network, creating an endless cycle of errors. SIM-card or contact in the slot.
⚠️ Note: If the error appears immediately after installing the application from an unknown source, there is a high probability of infection of the device by a virus-miner or Trojan masquerading as a system process.
Sometimes a particular version of the MIUI shell conflicts with the installed version of the underlying software (Android), Xiaomi developers may make a code error that only manifests itself in certain models or regions, in which case waiting for a patch or a system rollback helps.
Basic elimination methods: reboot and SIM verification
The simplest and often most effective way is to simply reboot the device, which clears the RAM and forcibly restarts all system services, including the telephony process, and if the error is temporary, it will disappear after it is turned on.
If the reboot does not help, you need to remove SIM-Check the metal contacts carefully for oxidation or scratches, it is recommended to wipe them with a soft dry cloth or a weasel, and check whether the card sits tightly in the tray - poor contact often causes a break in the connection and subsequent failure.
Try installing a SIM card in another slot if your Xiaomi supports two cards.This will help determine whether the crash is due to a particular slot or to the card itself.In some cases, installing a SIM card from another operator helps to eliminate problems on the provider side.
☑️ Diagnostics SIM-map
Cleaning the cache and data of the “Phone” application
The most effective software method is to clean up the accumulated application data. To do this, go to the Settings menu → Apps → All applications. In the list, find the phone (or Phone) item and click on it.
From the menu that opens, select the option “Clean” and then “Clear Everything.” Don’t worry, your contacts and call history won’t disappear if they’re synced with Google’s acca or Mi Cloud.This procedure only resets temporary files and settings of the app itself, eliminating logical errors.
A similar procedure is recommended for the “Contacts” and “Management” application. SIM-Sometimes a failure in one component will drag on others. After cleaning, make sure to reboot your smartphone completely.
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If the error has not disappeared after cleaning the data, try to force the Phone application to stop in the same settings menu before restarting.
Reset network settings and APN settings
Often the problem is incorrect mobile Internet settings. To fix this, go to Settings. → SIM-maps and mobile networks → Access points (APN). In the upper right corner, click on the three-dot menu and select Reset to Standard».
Also on the settings menu is the “Wi-Fi, Mobile Internet and Bluetooth Reset” feature, which is located along the Settings path → Connection and Sharing → Reset Wi-Fi, Mob and Bluetooth networks. It will return network modules to factory settings.
After resetting the network settings, the phone may require re-entering Wi-Fi passwords. This is normal system behavior that ensures the configuration is clean and the communication protocol conflicts are resolved.
| Parameter | Default value | Possible mistake | Decision |
|---|---|---|---|
| Type of network | LTE is preferred | Only 2G/3G | Select "Preferred LTE" |
| Protocol APN | IPv4/IPv6 | Only IPv4. | Change to IPv4/IPv6 |
| MCC/MNC | |||
| proxy | Not given. | Specified IP | Clear the field |
Removing problematic updates and applications
If the error occurred after a system or specific application update, consider rollback. For Xiaomi system applications, this can be done through the All Apps menu by selecting the desired one and clicking Remove Updates (if available).
In case you have installed third-party programs to call or identify a number, remove them.Third-party "callers" often conflict with the standard MIUI application, causing cyclical errors in the com.android.phone process.
Check the list of newly installed applications. If the error started on a certain day, delete all programs installed during that period, and pay special attention to antivirus, optimizers, and call recording applications.
Safe regime
Radical measures: reset to factory settings
If none of the above methods worked, the last software method is a complete reset (Hard Reset), before you make sure to back up all important data, as it will be irretrievably deleted.
You can reset via the Settings menu → About Phone → Settings reset → Erase all data. After that, the phone will return to the state in which it was at the time of purchase, and all software errors will be fixed.
⚠️ Warning: Make sure the battery level is at least 50% before starting reset. interruption of the process during the formatting phase can lead to the "bricking" of the device.
After the reset, take your time to restore all applications from the backup at once. First, check the phone with a clean system. If the error does not return, install the applications one by one to identify the culprit.
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A full reset eliminates 99% of software errors associated with corrupting system files and the settings registry.
Hardware problems and contact with the service
In rare cases, a com.android.phone error indicates a physical malfunction of the communication module or motherboard. If the phone falls, falls into the water or is subjected to heavy heat, the risk of hardware failure increases.
The problem may also be with the chip itself. SIM-Replacing the SIM card from the carrier with a new one often solves the problem if it was the old chip.
If after complete reset and replacement SIM-The error is saved, you need to contact the authorized service center Xiaomi.
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When contacting the service, be sure to inform the wizard that you have already done a full reset - this will save time for diagnosis.