Xiaomi Redmi screen goes out when you call and does not turn on: 7 reasons and ways to repair

Why does Xiaomi Redmi’s screen go out during a call and not turn back on?

You call the phone, you bring the Xiaomi Redmi to your ear, and suddenly the screen goes out and the smartphone stops responding to the presses. The call continues, but you can't bring the display back to life with either the power button or the sensor. The situation is familiar? This problem is found on Redmi Note 10/11/12, Redmi 9/10 and even the flagships of POCO F3/F4, but the reasons can be radically different - from a banal failure of the approach sensor to serious hardware malfunctions.

Software is responsible for 80 percent of the time, such as a firmware conflict, sensor error, or MIUI bug. However, if the screen doesn't turn on even after a reboot, physical damage like a disconnected display plume, a bloated battery, or a damaged motherboard may be the only thing that we can do in this article, from the simplest solutions (which you can use yourself) to the cases when you can't do without a service center.

Before you panic, check if your smartphone is responding to charging, if you have a battery indicator on the cable, it's a software problem, if you don't, it's a warning sign that your power controller or battery may be broken, and then we'll help you diagnose the malfunction by step.

1.Access sensor check: why the screen goes out when you call

The most common reason is that the proximity sensor is incorrect, and this sensor is responsible for turning off the screen when you hold your phone to your ear while you're talking, and if it's getting stuck or contaminated, it can falsely fire, blocking the display even after you've pulled the phone away from your head.

How to check the proximity sensor on Xiaomi Redmi:

• 📱 Open the Phone app and dial the code ##6484## (some models run #4636## → "Testing of equipment").
• 🔍 In the test menu, find Proximity Sensor. Cover the top of the phone with your hand, and the value should change from 5.0 cm to 0.0 cm.
• ⚠️ If the values do not change or the sensor shows N/A, The sensor is malfunctioning or disabled at the software level.

What to do if the sensor is not working:

1. Clean the top panel of the phone (where the sensors are located) from dust and protective film with a soft napkin.
2. Restart your smartphone – sometimes the sensor “hangs” after updating MIUI.
3. Reset sensor settings: go to Settings → System → Reset settings → Reset sensor settings.

2. Software failures: MIUI, firmware, and application conflicts

If the proximity sensor is working, but the screen still goes out and does not turn on, the problem may lie in system errors MIUI.

• 🔄 Firmware updates (especially in beta) MIUI).
• 📱 Installation of third-party launchers or gesture management applications.
• 🔋 Critical battery discharge (below 5%).

How to fix a software failure:

1. Forced reboot: Press the power button + volume increase for 10-15 seconds until the phone vibrates and reboots.
2. Clean the system cache: Turn off the phone. Press Power + Volume up to log into Recovery Mode. Select Wipe & Reset → Wipe Cache (use volume buttons for navigation).
3. Update rollback: If the problem has occurred after the MIUI update, try rolling back to the previous version via Fastboot (instruction below).

If your smartphone doesn’t respond even to a forced reboot, move on to the next section – it may be a hardware problem.

Hardware malfunctions: from plume to motherboard

When software methods don't work, and the screen stays black even after the reboot, you should suspect physical failures.

How to diagnose a hardware breakdown:

1. Check the response to charging: connect the phone to the network. If the battery indicator appears, the problem is more likely in the display or the plume.
2. Connect to a PC: If the computer defines the device as a Qualcomm HS-USB QDLoader 9008, it is a sign of “bricking” (reflashing through EDL is required).
3. Light a flashlight on the screen: if you can see a dim image in the dark, the backlight of the display has failed.

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If the phone vibrates when you call, but the screen doesn't turn on, try connecting it to an external monitor via a USB-C → HDMI adapter. If the image appears, there's a problem with the display or its plume.

4.Reset to factory settings: a last resort

If the screen is turned on periodically, but the problem with the cancellation during the call remains, a complete reset can help, which will delete all data, but return the smartphone to the “clean” state of MIUI.

How to reset to Xiaomi Redmi if the screen does not respond:

Important: if the phone is blocked by Mi Account, you will need to enter your login and password after the reset, without this data, you will not be able to unlock the device!

If the reset does not help, there are two options:

1. Flash your phone via Fastboot or EDL (PC and cable required).
2. Contact the service center (if the problem is hardware).

5. Frequent User Mistakes: What NOT to Do

When trying to “reanimate” Xiaomi Redmi, many people make critical mistakes that only exacerbate the problem.

⚠️ Never disassemble your phone if it's still warranty-worthy. Opening the case voids Xiaomi warranty obligations.

• 🔧 Self-replacement of the plume without experience: you can damage the connectors on the motherboard.
• 🔥 Heating the phone with a hairdryer or battery: This can cause the lithium-ion battery to ignite.
• 💾 Firmware through unverified sources: the risk of getting a “brick” with a broken loader.
• 🔋 Use of non-original chargers: can disable the power controller.

If you are not sure of your actions, it is better to consult specialists. The average cost of diagnosis in service centers is from 500 rubles, and repairing the display plume will cost 1,500-3,000 rubles (depending on the model).

Prevention: How to avoid problems in the future

To prevent the Xiaomi Redmi screen from going out accidentally during calls, follow these guidelines:

• 📲 Update regularly MIUI, But avoid beta versions of firmware.
• 🛡️ Install a case without high sides - they can block the proximity sensor.
• 🔋 Do not let the battery run below 10% – this can cause sensors to malfunction.
• 🚫 Do not install apps to “optimize” gestures or lock the screen – they often conflict with the user’s ability to use the device. MIUI.

If the problem has already manifested itself, but the phone is still under warranty, do not try to repair it yourself. Official service centers Xiaomi in Russia and the CIS are obliged to fix the defect for free, unless it is caused by mechanical damage.

FAQ: Frequent questions about the black screen on Xiaomi Redmi