How to turn off the headphone port on the Xiaomi phone: all the ways (including hidden)

Why users want to turn off the audio port – and when they really need to

The headphone jack on Xiaomi smartphones is one of the most problematic elements: it often breaks due to dust, contact oxidation or mechanical damage. But it does not always require repair. In some cases, a software or physical shutdown of the port can be a temporary solution - for example, if the phone constantly "thinks" that it has headphones connected to it, although they are not, this interferes with the speaker, microphone and even calls.

Another common situation is that the headphone port conflicts with wireless headsets (TWS, Bluetooth), which can automatically switch to wired headphones even if they are not connected, which leads to audio interruptions in AirDots or other wireless devices, in which case turning off the port helps stabilize the audio system.

It's important to understand that if the port is physically healthy, shutting it down will make it impossible for you to use wired headphones, but if the connector is broken or interferes with your phone, temporary deactivation may be warranted, especially before you sell the device or before you visit a service center.

Method 1: Software shutdown via engineering menu (without root)

The safest method is to use the hidden engineering menu (Engineer Mode), which is available on all Xiaomi, Redmi and POCO smartphones. This method does not require superuser rights and works on most models, including the Redmi Note 12, POCO X5 and Mi 11.

Instructions:

1. Open the Phone app and type the combination: ##36446337## (some models may require #4636###).
2. In the menu that appears, select Hardware Testing → Audio.
3. Find the Headset Mode section and set the Disable or Off value.
4. Save the changes and restart the phone.

⚠️ Note: On some firmware (for example, MIUI 14 and later) the engineering menu can be blocked. If the code does not work, try the alternative through the application. CIT (see next section).

Battery charge > 30% |Close all background apps |Disable Bluetooth headphones |Disable your settings-->

Method 2: Use the CIT (Mi Test) application to deactivate

The CIT (or Mi Test) app is Xiaomi's internal hardware testing tool, preinstalled on many models but hidden from the user, and activated by:

1. Install any application to run hidden activations (e.g. Activity Launcher from Google Play).
2. Find com.miui.ct and run CIT.
3. Go to the Single Test section → Headset.
4. Press Disable Headset or Force Disable (depending on the firmware version).

If CIT It is not available on your device, it can be downloaded as APK-file from trusted sources (e.g. APKMirror) but beware: unofficial versions may contain malicious code.

Method 3: Disconnect via ADB (for advanced users)

If the engineering menu and CIT didn't work, you can use Android Debug Bridge (ADB), a method that requires connecting your phone to your computer and basic command line knowledge, and is suitable for Android 10 and later.

Step-by-step:

1. Enable USB Debugging in the Developer Settings (Settings → About Phone → MIUI Version – Press 7 times, then return to Additional → For Developers).
2. Connect the phone to the PC and confirm the debugging permission.
3. Open the command line (Windows) or the terminal (macOS/Linux) Enter: adb shell settings put global headset_disable 1
4. Reset the device.

To return the port to working condition, use the command:

adb shell settings put global headset_disable 0

⚠️ Attention: Misuse of the right ADB If you're not sure what you're doing, skip this method or see a specialist.

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Before working with ADB, check if the drivers for your Xiaomi model are installed on the PC, and you can download them from the official Xiaomi website or through the Mi PC Suite program.

Method 4: Physical disconnection (disassembly of the phone)

If the software doesn't work, you have to mechanically shut down the port, which is a radical way of disassembling the phone and having minimal electronics skills, and it's suitable for removable models like the Redmi 9A, POCO M3.

What you need:

• 🔧 Set of screwdrivers (cross, flat, torks) T3-T5).
• 🧲 Screen suction cup.
• 🔥 Fryer (for softening glue).
• 🧤 Gloves and plastic mediator.

Algorithm of action:

1. Turn off the phone and remove it. SIM-map.
2. Heat the screen edge with a hair dryer (temperature ~60°C) and gently tuck it in with a suction cup.
3. Disconnect the battery plume, then find the headphone jack on the motherboard.
4. Unplug or disable the port plume (depending on the model).
5. Put the phone back together.

⚠️ Warning: Disassembling the phone will void the warranty. If your device is warranty, first contact the Xiaomi service center. IP-certification (e.g. Xiaomi 13 Lite) disassembly may result in loss of water protection.

Method 5: Alternative solutions (if nothing worked)

If you can’t turn off the port, consider alternative options:

• 🔄 Reset. Return the phone to factory settings via Settings → The phone. → Resetting. This can eliminate software conflicts.
• 🛠️ Replace the headphone port in 30-60 minutes at the service center, costing 500 to 1500 rubles depending on the model.
• 🎧 Use Bluetooth. go to wireless headphones (e.g. Xiaomi Buds 4 or Redmi AirDots 3).
• 🔌 USB-C For models without 3.5 mm (e.g. Xiaomi 12) use an adapter USB-C → 3.5 mm.

If the problem is false alarm (the phone "sees" the headphones when they are not), try blowing the port with compressed air or cleaning it with alcohol. Sometimes it helps to repeatedly connect / turn off the headphones - this resets the contacts.

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Before drastic measures (disassembly or dumping) check whether the problem is caused by pollution of the port. 40% of the time, cleaning solves the problem without additional action.

Frequent Mistakes and How to Avoid Them

When trying to turn off the headphone port, users often make critical mistakes:

1. Use of untested ADB-Some manuals advise you to delete system files (for example, audio_policy.conf), This leads to a loss of sound completely.
2. Disassembly without turning off the battery, which can short circuit and cause the motherboard to fail.
3. Installation of informal firmware. Custom MIUIs (e.g. xiaomi.eu) can block the engineering menu.
4. Ignoring backup: Resetting settings or working with ADB without backup results in data loss.

If the speaker has lost sound after the port is turned off, reset via CIT or return the ADB settings to the original. If the phone stopped turning on after disassembly, check the battery and screen plume connection.

FAQ: Answers to popular questions