How to turn off screen attenuation on Xiaomi when calling: all ways

Have you ever encountered a situation where, during an important call, your Xiaomi screen starts to dim and then completely go out? This is not only annoying, but also makes it difficult to manage the call - especially if you need to turn on speakerphone or switch to headphones. The problem is typical of most MIUI-based smartphones of the brand (including Redmi, POCO and Black Shark), and it is associated with an aggressive policy of energy saving the system.

In this article, we’ll look at all the current ways to turn off the fade screen when calling, from standard settings to hidden developer settings. The methods are tested on MIUI 12-14 (Android 11-14) and work on models from the Redmi Note 10 Pro to the flagship Xiaomi 13 Ultra. You’ll also learn why the screen dims even at 100% charge and how to fix it without.root rights.

Why does Xiaomi’s screen dim during a call?

The cause of the attenuation lies in three key mechanisms of MIUI:

• 🔋 Adaptive brightness – the system automatically reduces the backlight if the light sensor detects a “dark” environment (for example, when you put your phone to your ear).
• ⚡ Optimization of energy consumption — MIUI Forced brightness decreases when active calls are made to save charge (even if the battery is charged).
• 📱 Approximation sensor – if it is triggered falsely (because of a protective glass or case), the screen goes out as if you removed the tube from your ear.

It is interesting that in some models (for example, POCO F4 GT Xiaomi 12T) The problem only manifests itself when using VoLTE or Wi-Fi Calling, and this is due to the peculiarities of processing calls through the Internet. IP-protocol.

Method 1: Turning off adaptive brightness in settings

The easiest way is to deactivate the automatic backlight adjustment.

1. Open the Settings → Display.
2. Find the option "Adaptive brightness" (or "Automatic brightness adjustment") and turn off the slider.
3. Return to the Display menu and manually set a comfortable brightness level (recommended 70–80%).

⚠️ Note: On some firmware (for example, MIUI Global 14.0.4) adaptive brightness can be hidden. To find it, search in the settings (the magnifier icon at the top of the screen).

If the adaptive brightness is turned off, the problem is deeper, the proximity or energy saving sensor settings. Go to the next one.

Method 2: Configure the proximity sensor

The proximity sensor is responsible for turning off the screen when you hold the phone to your ear.If it doesn't work properly (for example, due to a thick case or dirt on the sensor), the screen can go out even when you just hold the smartphone in your hand.

To check and reconfigure the sensor:

1. Go to Settings. → The phone.
2. Click 5-7 times on the MIUI version until the notification “You are a developer!” appears.
3. Return to the main settings menu and open Additional → For Developers (or Advanced Settings → Developer Settings).
4. Find the option “Disable the proximity sensor” (or “Show clicks”) and activate it.

Important: On some models (for example, Redmi Note 11 Pro+ 5G), the option is called “Do not turn off the screen when you call” and is located in the section “Special features → Universal access”.

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If the proximity sensor is contaminated, wipe it with a soft napkin dipped in alcohol, usually to the right of the front camera (a point measuring ~1 mm).

Method 3: Disabling the power saving for the telephone module

MIUI aggressively optimizes power consumption, including for system processes that handle calls, and to keep the screen from dimming, you need to remove the phone module from the list of optimized applications:

1. Open Settings → Battery and Performance.
2. Select "Battery Optimization" (or "App Power Management").
3. In the list, search for "Phone" (or "com.android.phone") and click on it.
4. Select the option "No restrictions" (or "No optimization").

🔹 Additional: Check if Super Power Saving or Ultra Saving is enabled in the battery settings, which force the screen to lower brightness when calling.

Method 4: Using Hidden Codes of the Engineering Menu

If standard methods don't work, you can use service codes to test the sensors, which is a good way for advanced users.

Enter the following commands in the "Phone" application:

##6484## - Approximation sensor test
#36446337## - Sensor information (including lighting)
#4636## - Testing menu (Usage statistics section)

In the approximation sensor test menu:

• Check if the sensor is working correctly (cover it with your hand – the value should change from 1 to 0).
• If the sensor is not responsive, calibration may be required (available in the engineering menu at ##36446337###).

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Service codes may vary depending on the regional firmware. If the code doesn't work, try removing the last # or replacing * with # at the beginning.

Method 5: Install third-party applications (for advanced users)

If none of these methods worked, you can use third-party utilities, such as the Proximity Sensor Fix app (available on Google Play) that allows you to:

• 🔄 Forced to disable the proximity sensor during calls.
• 📊 Calibrate the sensor manually.
• ⚡ Block screen fade for specific applications (such as WhatsApp Calls or Zoom).

⚠️ Note: Sensor applications require "Special Access" permissions (in Security settings) → Permits → Do not install such utilities from unverified sources, they may contain malicious code.

The alternative is automation through Tasker, and the scenario might look like this:

1. Event: State → Phone → Incoming / Outgoing Call
2. Action: Display → Set brightness → 100%.
3. Additionally: Turn off adaptive brightness during the call.

Frequent Mistakes and How to Avoid Them

When setting up the screen attenuation, users often make the following mistakes:

• 🔘 Don't check the case - thick or metal covers can block the proximity sensor. Remove the case and check if the problem persists.
• 🔄 Resetting to factory settings is a radical method that rarely helps. Before resetting, try all the ways in this article.
• 📱 Ignore updates in new versions MIUI Frequently fix sensor bugs. Check firmware relevance in Settings → The phone. → Updating the system.

If after all the manipulations the screen continues to dim, the problem may be a hardware malfunction of the proximity sensor or the display plume, in which case we recommend contacting the Xiaomi service center.

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Before visiting the service, check the warranty through the Mi Service app (available on Google Play). Repair of the proximity sensor costs 800-1,500 rubles depending on the model.

FAQ: Answers to popular questions