Connecting wireless headphones to Xiaomi Mi 9: a step-by-step guide

Modern smartphones like the Xiaomi Mi 9 feature advanced wireless connectivity modules that provide stable connectivity to peripherals. However, despite the advanced Snapdragon 855 hardware board and MIUI shell, users sometimes face difficulties in pairing gadgets in the first place, which can be due to both Bluetooth protocol features and software conflicts in the Android system.

Successful audio synchronization is not just about turning a switch on a menu, but about setting up your phone’s accessories and settings. In this article, we’ll take a closer look at the connection process, look at the intricacies of high-resolution codecs, and offer solutions to common errors that might occur to nine owners.

Before you start setting up, make sure your Xiaomi Mi 9 smartphone is charged and the headphones are in pairing readiness. Ignoring basic requirements often results in the device not seeing the headset or the connection being interrupted all the time. Let's get to the practical part and tune the sound correctly.

Preparation of Xiaomi Mi 9 and headphones for pairing

The first step is to activate the wireless module on the smartphone itself. Xiaomi Mi 9 owners need to lower the notification curtain from top to bottom and find the Bluetooth icon. If it is not on the widget home screen, go to Settings → Bluetooth and put the switch into active position. The system will immediately start scanning the surrounding space.

The critical point is to put the headphones themselves into detection mode. Most TWS (True Wireless Stereo) models require holding the touchpad or physical button for 3-5 seconds before the flashing indicator appears. Conventional power on is often not enough for the Xiaomi Mi 9 to see the device on the list of available.

⚠️ Note: Some headphone models automatically exit pairing mode after 2 minutes if you don't connect. If you don't, you'll have to repeat the search mode activation procedure.

It's also worth checking if the device is connected to another gadget. If your headphones have previously worked with a tablet or laptop, they may automatically try to reconnect with it by igniting requests from the phone. Temporarily disable Bluetooth on other devices nearby to rule out priority conflicts.

Step-by-step connection instruction through the settings menu

Once the preparatory stages are complete, you can move to direct pairing. On the screen of the Xiaomi Mi 9 smartphone, the name of your headset should appear in the available devices section. Click on it to initiate the process (handshake).

In some cases, the system may request a pairing confirmation or input PIN-The standard code for most devices is 0000 or 1234, but modern models often do without this step using a secure protocol. LE Audio or similar technologies.

Successful connectivity will be accompanied by a characteristic beep in the headphones and the appearance of the status "Connected" in the menu of the phone, and in the status bar on top will appear the icon of the battery headphones, if the model supports the transfer of data on charge.

• 🎧 Open the Bluetooth menu on Xiaomi Mi 9.
• 🔍 Wait for the device name to appear in the list of “Available Devices».
• 👆 Click on the headset name to start pairing.
• ✅ Confirm the pairing request if it appears on the screen.

If the connection is established but the sound is not playing, check the usage profile. In the settings of the connected device, make sure that the Multimedia and Phone are activated. Sometimes the phone only connects as a headset for calls, ignoring the music flow.

Customization of sound quality and codecs in MIUI

Xiaomi Mi 9 is equipped with high-quality DAC and supports modern audio compression codecs such as aptX HD and LDAC. To unlock the potential of wireless audio transmission, you need to activate the appropriate settings in the hidden menu of the developer.

To access the advanced options, go to Settings → About Phone and quickly click on the MIUI version number seven times. Once the “You’ve become a developer” notification appears, go back to the main settings menu, select Additional → For Developers.

In the developer menu, find the Bluetooth Audio Codec and select the option from the list. Changing this option requires rebooting the connection, so the headphones can be temporarily disabled. This is the standard behavior of the system when changing the coding algorithms.

⚠️ Note: Use of high resolution codecs (LDAC, aptX HD) It significantly increases the battery consumption of both smartphones and headphones. In power-saving mode, the system can be forced to switch to a more economical codec. SBC.

Use of Xiaomi Earbuds and Mi Wear app

For owners of proprietary acoustics from Xiaomi and Redmi (AirDots series, Buds), it is recommended to install a special application Mi Wear (formerly Xiaomi Earbuds), which allows not only to manage pairing, but also to update the firmware of headphones, which often solves stability problems.

The app automatically determines the model of the connected headphones and offers to install the necessary plugins. Through this interface, you can adjust the equalizer, change the touch controls and search for lost headphones by GPS (if the model supports).

For third-party headphones (Sony, JBL, Samsung), it’s better to use their native apps from the Google Play Store. They provide deeper access to noise reduction and audio profile personalization settings than the standard Android menu.

• 📲 Download Mi Wear from Google Play or Mi Store.
• 🔗 Launch the app and follow the instructions on the screen.
• 🔄 Update your headphones to the latest version.
• ⚙️ Set up gestures and equalizer to your preferences.

Importantly, when using third-party applications, MIUI can aggressively close them in the background to save energy. To avoid communication breaks, open the Mi Wear app, click the three-dot menu in the corner, select About app, and set the "No restrictions" value in Activity Control.

Solving Connection Finding and Stability Problems

The situation when Xiaomi Mi 9 does not see the headphones or constantly loses communication is one of the most common. Often the reason lies in the crowded cache of Bluetooth services of the system.

To perform the reset, go to Settings → Apps → All Apps. Click on the three dots in the top right corner and select Show System Processes. Find in the list of Bluetooth, then click Clear → Clear Everything. After that, the phone will suggest you reboot.

Another cause of instability can be interference from Wi-Fi networks, especially if you are using the 2.4 GHz band. Bluetooth and Wi-Fi work in the same frequency range, and a powerful router signal can "muffle" the headphone signal. Try to switch the smartphone to a 5 GHz network or move away from the radiation source.

If software methods don't work, check the physical condition of the antenna module. The Xiaomi Mi 9 has Bluetooth antennas integrated into the board, and heavy drops could disrupt contact. However, before you carry the phone to the service, try to perform a full network reset.

Advanced settings and optimization for games

For gamers, minimal latency is critical. Standard Bluetooth can produce up to 200ms latency, which is annoying in dynamic shooters or rhythm games. Xiaomi Mi 9 supports Game Turbo technology, which optimizes system resources.

Add your game to the Security app → Game Turbo. Make sure that audio-related processes are prioritized in the game mode settings. You can also include the option to turn off absolute volume in the developer menu, which sometimes allows you to adjust the volume independently of the system, removing digital distortion.

💡

To minimize delay in games, use headphones with support for the aptX Low Latency codec. Standard SBC and AAC codecs are not designed to synchronize video and sound in real time.

Some users have noted that disabling the dual audio feature (if active) improves connection stability in games. Even if you use one headset, the system can reserve resources for the second device. Check the settings in the Bluetooth menu by tapping the gear next to the connected device.

⚠️ Warning: Enabling Absolute Volume Mode on the developer menu can cause the sound to become hoarse at maximum volume. Use this feature only if the standard volume seems to be insufficient.

Frequently Asked Questions (FAQ)

💡

The key factor in stable operation is not only the Bluetooth version, but also the absence of physical obstacles between the phone and headphones, as well as the relevance of the firmware accessories.