Connecting wireless headphones to Xiaomi Redmi 9: The Complete Guide

Modern smartphones like the Xiaomi Redmi 9 offer users a wide range of multimedia entertainment, and high-quality audio plays a role here. The transition to a wireless format for listening to music or conversations eliminates unnecessary wiring, but requires the right initial setup. Many owners of budget and mid-budget models face difficulties in the first pairing of devices, not knowing the intricacies of the MIUI interface.

The process of activating a Bluetooth connection on a device with a MIUI 12 shell or later may differ from the standard Android algorithm, which often confuses inexperienced users. In this article, we will discuss in detail how to correctly configure the communication between the phone and the headset, and also consider the hidden settings that affect the quality of the transmitted sound.

We will also discuss power consumption and connectivity stability, as the Bluetooth module is a key element of wireless communication, and the right configuration will avoid audio and video dissynchronization, as well as extend the battery life of the smartphone.

Preparing gadgets for pairing

Before starting the procedure, you need to make sure that both devices are ready for communication. On a Redmi 9 smartphone, you should check the battery charge, since the process of finding and establishing a connection can be energy intensive. It is also important that the headset is fully charged, since in pairing mode it consumes the maximum amount of energy.

Turn on Bluetooth on your phone. To do this, swipe down the notification curtain from top to bottom and find the appropriate icon, or go to Settings → Bluetooth. Make sure the slider is activated and lit blue. Now you need to put the headphones themselves in detection mode.

• 💡 For TWS-Headphones (True Wireless) usually need to remove them from the case and pinch the touch panels on both devices on the case. 5-7 seconds.
• 🎧 For overhead models, you most often need to hold the power button until a flashing indicator appears (often red-blue).
• 📱 Make sure the headset is not connected to another smartphone, as an automatic reconnect can block the search with the new device.

Some headphone models require resetting previous settings before a new connection, and if the device has been paired with another gadget before, it is better to remove it from the list of stored devices on the old phone, which will eliminate address conflicts and simplify the detection procedure.

⚠️ Warning: If the headphones flash red or don't light up at all, they may be discharged or in sleep mode. 10-15 minutes before attempting to pair.

It's important to understand that the pairing mode is active for a limited time, and this window is usually 60 to 120 seconds, and if the phone hasn't detected the device during this time, you'll have to repeat the pairing mode.

Step-by-step connection instruction

Once the headphones are in visibility mode, pick up your Redmi 9. Open the Bluetooth settings menu. The system will automatically search for available devices within range. The name of your headset should appear in the "Available Devices" list.

Tap the device name with your finger. You can see a request on the screen to confirm that you're pairing with or without code. Most current models don't require code, and the connection is set up automatically. It can take 3 to 10 seconds.

If the connection is successful, the status bar will display a headphone battery icon (if the model supports charge transfer) or a standard Bluetooth icon.

In rare cases, the system may request PIN-The standard combinations for most Chinese and European manufacturers are 0000 or 1234. Enter the code in the window that appears to complete the procedure.

Customization of sound and codecs in MIUI

After successfully pairing, Xiaomi Redmi 9 allows you to flexibly configure audio output settings. The MIUI shell is based on Android, but has its own audio processing algorithms. To access advanced settings, go to Settings → Bluetooth, click on the arrow next to the name of the connected device.

Here you can manage your usage profile. If you're listening to music, make sure that your profile is activated. A2DP (Advanced Audio Distribution Profile, responsible for high quality stereo sound. HFP (Hands-Free Profile, which reduces sound quality for better voice and microphone performance.

You can check the status of your connection from the "Additional" menu or the engineering menu (code ##6484##) but it is difficult to change the codec on Redmi 9 with standard means, since support for advanced codecs like aptX depends on the version of the Bluetooth chip and the manufacturer's license.

• 🎵 For music, select the "High Quality" mode in the equalizer settings.
• 🎮 Minimal latency is important for gaming; some headphones have a special "Game Mode" activated by a triple tap.
• 📞 For calls, make sure that in the settings of the Bluetooth device (there is a tick) item "phone Sound".

Also worth paying attention to the function "Absolute volume". If the volume of the headphones and phone is adjustable independently, this can cause discomfort. Enable volume synchronization in the developer menu or in special features, if this option is available in your version of the firmware.

Notification and multimedia management

Modern wireless headsets allow you not only to listen to sound, but also control playback. On Redmi 9, the notification settings for each Bluetooth device are individual. Go to the properties of the connected device in the Bluetooth menu.

You'll see switches for different types of media, which allows you to listen to music through headphones, for example, but leave system sounds and alarms on your phone speaker, and this flexibility is especially useful at night or in the office.

⚠️ Warning: Disabling Multimedia in the device settings will cause YouTube or music to go through the phone's speaker, even if the headphones are connected.

Tracks are controlled through physical buttons or touch zones on headphones. Standard MIUI commands typically work like this: one tap is a pause/start, two is the next track, three is the previous one. Long taps often call the Google Assistant or Mi AI voice assistant.

If the control is not working correctly (for example, do not switch tracks), try to reconnect the device or update the firmware of the headphones themselves through the manufacturer’s proprietary application (for example, Galaxy Wearable or Haylou).

Addressing common problems

Despite the simplicity of the technology, Xiaomi users can encounter typical errors. Often, the phone sees the headphones, but does not connect, giving an error "I failed to connect", in which case cleaning the list of associated devices will help.

Click on the gear icon or arrow next to the device name and select "Disable" or "Forget device." Then repeat the pairing procedure from scratch, which resets the encryption keys and eliminates software conflicts.

Another common problem is intermittent sound or stuttering, which can be caused by interference from a Wi-Fi router (working in the same 2.4 GHz band) or a discharged battery. Try to move away from the signal source or reboot your smartphone.

If the headphones are connected but there is no sound anywhere, check if another audio output device is selected. There is a select audio output button in the Redmi 9 notification curtain (usually a speaker icon with a triangle) Make sure your Bluetooth headset is selected there.

Optimization of the Bluetooth module

For the wireless connection to work smoothly on Redmi 9, it is important to keep an eye on system updates. Xiaomi regularly releases security patches and improvements for communication modules. Check for updates in the About Phone menu → MIUI version.

Also worth mentioning is the power saving effect: Aggressive battery settings can kill Bluetooth background processes, causing a connection to break when the screen is off. Add an app you use to listen to music (such as Spotify or Yandex Music) to the battery saver exception list.

• 🔋 Turn off Power Saving Mode while using Bluetooth.
• 📶 Avoid using covers with metal elements that shield the signal.
• 🔄 Periodically clear the Bluetooth cache through the Apps menu" →"Show it all" →"Bluetooth" →"Memory" →"Clean up".

In the engineering menu (available via ##64663###), you can run a Bluetooth test, a diagnostic tool that checks the antenna and module, and if the test fails, the problem may be hardware.

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If the sound in the headphones has become quieter after the MIUI update, try switching the switch from the developer menu ("Stop absolute volume"), which often solves the problem of quiet sound on third-party headsets.

Frequently Asked Questions (FAQ)

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The main key to a stable connection is the timely update of the phone firmware and the correct entry of headphones into detection mode before each new pairing.