The Xiaomi Mi A2 is one of the most popular devices running pure Android, which makes it perfectly compatible with modern accessories. Wireless headphones have become an integral part of the mobile experience, allowing you to enjoy music or talk without unnecessary wires. However, the process of their first connection can raise questions for users who have not previously encountered Bluetooth technology or changed the model of the phone.
In this article, we will discuss in detail all the steps of pairing the headset with your device, as well as the possible difficulties that you may encounter. We will pay attention not only to the standard procedure, but also to the nuances that are specific to the Android One shell installed on the Mi A2. Proper tuning ensures high sound quality and stable connection during use.
Before you go into action, make sure your headphones are charged and in close proximity to your smartphone. The distance between the devices should not exceed several meters so that the signal is transmitted without interference. Also check if the wireless module is on the system, as this is a basic requirement to start looking for new gadgets.
Equipment Preparation and Bluetooth Activation
The first step on the road to wireless sound is to properly prepare both devices. Xiaomi Mi A2 smartphone is equipped with Bluetooth module version 5.0, which provides high data rate and low power consumption. To start, you need to activate this module in the system settings or through the quick access panel.
Take your headphones and put them in pairing mode. Depending on the model, this can be a long-term hold on the on button or a separate button with the Bluetooth logo. The indicator on the headset should start flashing, usually in blue or red-blue, signaling readiness to search for devices.
⚠️ Warning: If the headphone indicator is on or not blinking, it means that they are in normal operation and not visible to other devices.
On your smartphone, open the settings menu and find the connection section. In the clean version of Android that's on the Mi A2, this item is often called simply "Connected Devices." Make sure that the Bluetooth activation slider is translated to "On." The system will automatically start scanning the available space.
The process of pairing devices
When you activate the search, your Xiaomi Mi A2 screen will display a list of connected gadgets. Find the name of your headset in the list. It may match a brand or model, such as AirDots, Galaxy Buds or WH-1000XM3. Click on the name to initiate the mating procedure.
In some cases, the system may request confirmation of the access code, the standard pin code for most devices is 0000 or 1234. However, modern models often use Secure Simple Pairing technology, which allows you to exchange encryption keys automatically without entering numbers by the user.
- 📱 Open the “Settings” menu on your smartphone.
- 🔍 Go to Connected Devices and select New Device".
- 🎧 Wait for the name of your headphones to appear in the list of available.
- ✅ Click on the headset name to complete the pairing.
Successful connectivity will be accompanied by an audible beep in the headphones and a corresponding notification on the phone screen, the status of the device in the list will change to "Connected". From now on, all audio stream, including system sounds and calls, will be redirected to the external headset.
☑️ Checking a successful connection
Setting up profile and sound quality
Once the connection is established, it makes sense to check your profile settings to make sure the sound is transmitted in the best quality. Android allows you to prioritize the use of the headset for different media types. You can adjust the separate volume for music, calls and alarm clock, which is especially convenient for the Xiaomi Mi A2.
In the Bluetooth menu, if you click on the gear next to the name of the connected device, you can see additional options. There are often switches available for Media Audio, Audio Calls and Contacts. Disabling unnecessary profiles can help in saving battery power or resolving conflicts when sound is not where you expect.
⚠️ Note: Some high-resolution codecs, such as aptX HD or LDAC, It may not be supported by specific headphone models, even if the phone can, in which case the system will automatically select the best available option, for example, the best possible choice, SBC or AAC.
For advanced users, you can activate hidden developer settings, which allows you to manually select a Bluetooth codec if you don't like the standard choice, but it's worth remembering that using high-bit codecs can increase the latency of audio in games or videos.
How to turn on the developer's codecs?
Work with TWS-Headsets and features of Android One
Users of Xiaomi Mi A2 often note stable work with fully wireless headphones (TWS). Android One feature is the lack of aggressive battery optimization, which is characteristic of the MIUI shell. This means that the system less often "kills" background Bluetooth processes, which has a positive effect on the stability of the connection.
However, when working with TWS-It's important to monitor the charge of each headphone separately for models, and some cheap models can show a total charge, while one of the ears is already discharged. For more accurate control, you can install third-party apps from Google Play, which display the charge level of each module on the screen widget.
| Parameter | Description | Recommendation |
|---|---|---|
| SBC codec | Basic standard for sound transmission | Use it when compatibility is important |
| AAC codec | Improved quality for iOS and Android | Optimal for Xiaomi Mi A2 |
| Delay (Latency) | Time of signal transmission | Important for games and videos |
| Range of action | Distance without breaks | Up to 10 meters in line of sight |
If you use an active noise cancellation headset, make sure that the appropriate mode is on the device itself, as it is not always possible to control this setting through the standard Android menu.
💡
To minimize the latency of your games on the Xiaomi Mi A2, use headphones that support the aptX Low Latency codec, if any, or turn off visuals in the audio settings.
Solution: if the headphones are not connected
Despite the simplicity of the procedure, sometimes there are situations when the Xiaomi Mi A2 does not see the headphones or refuses to connect to them. The most common reason is the "stick" of previous settings in the phone's memory, in which case a full reset of the Bluetooth settings helps.
Go to the list of paired devices, find your headset and select the option "Forget" or "Disable." Then turn off Bluetooth on your phone, restart your smartphone and try to search again. Remember to also reset the headphones themselves, usually this is done by holding the power button for a long time or a special combination.
- 🔄 Reboot your smartphone to update network services.
- 🗑️ Remove the device from the Forgotten Devices list in Bluetooth settings.
- 🔌 Reset the headphones to the factory settings (according to the instructions to them).
- 📡 Make sure the headphones are not connected to another phone nearby.
Another problem may be the desynchronization of the left and right headphones in the TWS-If you only play one channel, put both earbuds in a case, close the lid, wait 10 seconds and pull them out at the same time, and that will trigger the initial pairing procedure before you connect to the phone.
⚠️ Note: If after all the manipulations the phone sees other devices, but does not see specific headphones, the problem may be in hardware malfunction of the Bluetooth module of the headset or incompatibility of protocol versions.
💡
Resetting network settings via the System menu -> Additional -> Resetting Wi-Fi, mobile networks and Bluetooth often resolves connection problems, but will delete stored Wi-Fi passwords.
Optimizing energy consumption and stability
Although the Xiaomi Mi A2 doesn’t have a heavy shell, background processes can still affect Bluetooth.For maximum autonomy, it’s recommended to turn off scanning devices when you’re not planning to connect new gadgets.
Also worth paying attention to applications that have access to geolocation. In modern versions of Android, turning on Bluetooth often requires activating geolocation for more accurate location scanning. This can be turned off in advanced settings if the accuracy of the positioning is not critical for you.
Clean the "Bluetooth" cache regularly from the application management menu. The accumulation of temporary files can slow down the module and increase response time when an incoming call. Go to Settings → Applications → Show system processes → Bluetooth → Memory → Clear the cache.