Why incoming call on Xiaomi phone is not displayed: a full analysis of the causes and solutions

Are you missing important calls because Xiaomi's screen isn't responding to incoming calls?The problem when the phone doesn't show a call notification (no vibration, no screen lights, no melody) is found in 15% of brand users - and the reasons can lie in software failures MIUI, In this article, we'll look at all the scenarios that we can think of, from the banal off sound to the antenna module being damaged, and we'll give you step-by-step instructions for each situation.

The problem is that it can be selective, like when some contacts are shown calls and others are not, or when the phone vibrates, the screen is black. 10/11/12, Poco X3/X4, Mi 11/12 and isolated 12 Importantly, if you have a malfunction after a drop or moisture, you can go straight to the hardware breakdown section, and the software won't help.

How to accurately identify the problem: symptoms and diagnosis

Before you start a repair, you need to clearly document how the failure manifests itself, and the algorithm of actions depends on it. Here are the key signs that you should pay attention to:

• 📵 The screen does not light up when an incoming call is made (but after unlocking, you can see a missed call).
• 🔔 No sound/vibration, although all settings are included.
• 📞 The call is displayed with a delay (for example, 10–30 seconds after the call starts).
• 👥 The problem is only with certain contacts (for example, calls from subscribers of the same operator are not shown).
• 🔄 The failure occurs periodically (it works, then does not).

If Xiaomi’s screen doesn’t respond to calls, but misstated calls are displayed in a log, it’s more of a software problem. If there are no missed calls in history, it could indicate a malfunction. SIM-A card or a communication module:

Ask someone to call your phone from another number.|Check if the notification indicator is on (if any) during the call|Make sure that the call log keeps a record of the missed call.|Try calling from your phone to another number (checking outbounds)|Restart the device and repeat the test-->

Regularly (several times a day)|Sometimes (once a week)|It's come out and it's not coming out.|Only with certain contacts.-->

Critical point: if the phone does not show incoming calls only in power saving mode, the problem lies in the settings MIUI Optimization. More on this in the next section.

Programmatic reasons: from bugs MIUI before application conflicts

In 70% of cases, firmware or third-party applications are to blame. Xiaomi is known for its aggressive optimization algorithms that sometimes stifle system processes, including call processing.

1. Energy saving mode and background optimization

Battery function and performance → Optimization MIUI It can block the telephony module in the background, and this is especially true for Redmi models with Snapdragon processors. 4xx/6xx, where aggressive energy saving is switched on automatically when the battery is low.

How to fix it:

1. Go to Settings. → Battery and productivity → Optimization MIUI.
2. Turn off the Adaptive Optimization option.
3. In the Applications section, find the Phone and Contacts, select Without restrictions.
4. Turn off the power saving mode in the notification curtain.

Important: on some firmware (for example, MIUI 14 for global version) item “Optimization” MIUI" To see it, you need to turn on "Advanced Settings" in the battery menu.

Failures in the Phone application

If the com.android.dialer app freezes or its data is corrupted, it can lead to missed calls, which is made worse if you use third-party calls like Truecaller or Google Phone.

Decisions:

• 🔄 Cache cleanup: Settings → Annexes → Application management → Phone. → Warehouse → Clear the cache.
• 📥 Reset application settings: In the same menu, click Reset settings (will delete call history!).
• 🛠️ Reinstall Updates: If the call was updated via Google Play, remove the updates (three-dot button in the corner of the app page).

3. Conflicts with third-party applications

Spam blocking apps (Truecaller, GetContact), antiviruses (Avast, 360 Security), or even launchers (Nova Launcher) can intercept call processing, such as Truecaller, which is known for being a bug when it jams call notifications from unknown numbers.

Diagnosis:

1. Load your phone in Safe Mode (press the power button) → long tap on "Switch off" → "Safe regime").
2. Ask someone to call you, and if the call is displayed, it's third-party software.
3. Remove suspicious apps by testing calls after each deletion.

Pay special attention to applications with the rights Read call log and call management. These can be checked in Settings. → Annexes → Permits → Additionally.

4. Failures in operation SIM-map

If the problem is only one of SIM-map (on two-symbol models Xiaomi), the reasons may be the following:

• 📶 Incorrect network settings: the phone is running in mode 2G, What may cause delays in notifications.
• 🔧 Operator profile conflict: outdated settings APN.
• 🛜 Network registration problems: the phone does not “catch” the operator’s network.

How to check:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Type of network.
2. Choose. 4G (preferably 3G (if 4G unstable).
3. Update the operator profile: Settings → SIM-map → [Yours. SIM] → Update profile.
4. If there is no option, enter USSD-code: ##4636## → Phone information → Select a network (manually select your operator).

⚠️ Note: If after a network type change (e.g., with a 4G on 3G) Calls start to show, the problem lies in the unstable operation of VoLTE on your SIM-Contact the operator to check for technology support.

5.Firmware bugs MIUI

Some versions MIUI (particularly MIUI 12.5 and MIUI 13 for global devices) contain a critical bug that causes the telephony module to fall asleep during long downtime, manifesting as a delay in notifying a call by 10 to 30 seconds.

Decisions:

• 🔄 Update your firmware to the latest version (even if the update doesn’t come by air, check manually in Settings). → The phone. → Updating the system).
• 📥 Reverse to stable version: if the bug appeared after the update, go back to the previous firmware via Fastboot.
• 🛠️ Resetting network settings: Settings → System system → Resetting settings → Resetting network settings.

For Poco models X3 Pro and Redmi Note 10 Pro with Snapdragon processor 732G There's an informal patch that fixes call delays. XDA Developers (Search for themes by your phone model).

Hardware malfunctions: when without a service center can not do

If the software didn't work, the problem could be hardware, and hardware malfunctions usually occur after physical stresses like falls, moisture, overheating, and the most common breakdowns are:

1. damage to the antenna module or SIM-plug

If the phone stopped showing incoming calls after a fall or contact with water, it is likely to be damaged:

• 📡 Antenna module (responsible for receiving the network signal).
• 🔌 SIM-connector (oxidation of contacts or mechanical damage).
• 📶 RF-tract (chain of elements transmitting a signal from an antenna to a processor).

How to diagnose:

• Check the signal level: if it is constantly at a minimum (1-2 divisions) or absent, this is a sign of an antenna problem.
• Try inserting. SIM-card to another phone – if it works there, the problem is your device.
• Look at this. SIM-oxidation (green coating) or bent contacts.

Xiaomi models with a metal body (such as Mi 9 or Mi 10) are characterized by damage to the antenna tracks when falling on asphalt, in which case repair is possible only in the service center using a microscope and soldering station.

Failure of the communication module (modem)

A modem (or SoC if integrated into the processor) may fail due to:

• ⚡ Voltage drops (for example, after using non-original RAM).
• 🔥 Overheating (often found in Snapdragon) 8xx Intensive use of mobile internet).
• 💧 Corrosion after moisture is introduced.

Signs:

• The phone is not registered on the network (no signal at all).
• Symptoms appear gradually: first disappears 4G, Then the calls stop working.
• B Settings → SIM-map → Status. SIM Displayed Unknown or Unconnected.

⚠️ If the phone stopped catching the network after running through Fastboot, it may have gotten damaged modemst1/st2 (In this case, only flashing using the official Mi Flash Tool with the Clean All tick will help.

3. Damage to the display plume or touchscreen

If the screen does not light up when an incoming call is made, but the missed call is displayed after unlocking, the problem may be:

• 📱 Display plume (running or moving away from the connector).
• 🔋 Controller backlight (screen is turned on, but without backlighting).
• 🔄 Power management module (no voltage is applied to the display when an incoming call is made).

How to check:

1. Connect your phone to charge. If the incoming call lights up the charge indicator, but the screen remains black, the problem is in the plume or backlight.
2. Light a flashlight on the screen during the call: if the image is barely noticeable, the backlight inverter is faulty.
3. If the screen reacts to touch (for example, you can unlock the phone blindly), but does not turn on – the plume is to blame.

For models with AMOLED-screens (for example, Xiaomi 12 Pro or Black Shark 5) are characterized by a malfunction of the controller OLED, It can flash or shut down completely when you call in, and it costs 30 to 50 percent of the cost of fixing that defect.

4. Failure of the battery or power controller

If the phone doesn’t respond to calls when the battery is low (e.g., below 15%), the problem may be:

• 🔋 Heavyly worn battery (capacity below 60% of nominal value).
• 🔌 Power controller (incorrectly distributes energy when an incoming call is made).
• 📉 Failure to work PMIC (power-control).

Diagnosis:

• Check the battery wear in ##4636## → Battery information (parameter Level of wear).
• If the phone turns off at 20 to 30% charge, the battery is a problem.
• If the phone is rebooted when you call it, it is defective. PMIC.

For Poco models F1 redmi K20 Pro is known to have a problem with overheating the power controller during long conversations, which subsequently leads to skipping incoming calls.

Universal Solutions: What to Do When Nothing Works

If you have tried all the methods, but the problem remains, use these tips:

1.Reset to factory settings

It's a radical method, but it helps in 80 percent of software failures. Important: Back up your data through Settings before resetting. → The phone. → Backup.

How to reset:

1. Go to Settings → About the phone → Reset settings.
2. Choose to erase all data.
3. Confirm the action (you will need to enter a pattern lock or PIN).
4. After the reboot, set your phone up as new and check the calls.

⚠️ Note: On some models (Redmi Note 8 Pro, Poco) X2) post-discharge IMEI. To avoid this, write down before resetting. IMEI (Enter *#06# and save it to the cloud.

2. firmware through Fastboot

If the reset didn’t work, try flashing the phone with the official firmware through the Mi Flash Tool.This will help if the problem is caused by damage to system files.

Instructions:

1. Download the latest stable firmware for your model from en.miui.com.
2. Unpack the archive and copy the path to the folder with the firmware.
3. Install the Mi Flash Tool and Qualcomm drivers (for Snapdragon) or MediaTek (for Snapdragon) Helio/Density).
4. Turn the phone into Fastboot mode (turn off, then pinch Power + Volume down).
5. Connect to your PC, in Mi Flash, select the firmware folder and press Flash (select Clean All).

Critical: If you are flashing a device with a locked bootloader, unlock it first through the official Mi Unlock tool, otherwise the phone will turn into a brick.

3. Alternative calls

If the standard phone application is not working properly, try third-party calls:

• 📞 Google Phone (supports Call Screen and spam filter).
• 🛡️ Truecaller (good for spam identification, but can conflict with spam) MIUI).
• 🔍 Simple Dialer (minimalist call without unnecessary functions).

Set up the selected call from Google Play, then:

1. Go to Settings → Applications → Default Applications → Phone.
2. Select the installed call.
3. In the new app settings, disable all battery optimization features for it.

4. Contact the service center

If none of these methods work, you just have to carry the phone for repair.

• 📋 Write down all the symptoms (when the problem occurred, and then how it manifests itself).
• 🔄 Back up the data (even if the phone doesn’t turn on, you can try to retrieve the data through the phone. TWRP).
• 🔍 Find out if your model has typical malfunctions (for example, the Redmi Note 7 often falls off the antenna plume).

Cost of repair:

Tip: If your Xiaomi is guaranteed, don't try to repair it yourself. Official Xiaomi service centers in Russia are in Moscow, St. Petersburg, Yekaterinburg and other major cities. mi.com/ru/service.

How to Prevent a Problem in the Future

To avoid repeated crashes with incoming calls, follow these guidelines:

• 🔄 Update your firmware regularly (especially if you use custom builds like Xiaomi.eu).
• 🛡️ Do not install battery optimizers from third-party developers (e.g. Greenify, AccuBattery).
• 📵 Periodically check the signal level in different places (if it is constantly low, contact the operator).
• 🔋 Keep an eye on the battery (if you wear more than 60%, replace the battery).
• 💧 Avoid getting moisture (even if the phone has protection) IP53, As the Redmi Note 10, it doesn’t guarantee 100% protection).

Poco and Redmi owners with MediaTek (Helio) processors G85/G95/Density 810) It is especially important to avoid overheating – these chips are prone to modem degradation during prolonged network operation. 4G. If your phone gets too hot during conversations, try it:

• Disable VoLTE in the settings SIM-map.
• Use a heat sink case.
• Do not talk on the phone while charging.

💡

If you miss important calls often, set up duplication notifications on your smartwatch or fitness bracelet (like the Mi Band 7 or Amazfit). GTR This will help you avoid missing a call even if the phone screen is unresponsive.

Frequent questions