Modern smartphones in the Xiaomi Redmi line are equipped with advanced wireless communication modules that allow you to instantly create a pair with any Bluetooth headsets. However, users often encounter nuances of the MIUI or HyperOS shell interface, due to which the standard connection procedure may not seem obvious. The correct sequence of actions guarantees not only a quick connection, but also stable transmission of the audio signal without delays.
In this article we will analyze in detail the process of pairing devices, starting from putting the headphones into detection mode and ending with fine-tuning codecs for maximum sound quality. You will learn how to fix common errors when the phone does not see the accessory, and what hidden system parameters can affect the operation of audio devices.
Preparing headphones for pairing
The first and most critical stage is to switch your headphones to visibility mode for external devices. Many users make the mistake of simply turning on the headset, not realizing that a special procedure is required to connect for the first time. Usually this is holding down the power button or touchpad for 5-7 seconds until a characteristic indicator appears.
Depending on the model of your accessory, the algorithm may differ. For TWS (fully wireless) models, you often need to remove both headphones from the case and hold the touch zones. Wired models with a Bluetooth module usually have a separate physical button with a logo Bluetooth.
- 🎧 Hold the power button until the LED starts flashing blue and red (or white, depending on the brand).
- 🔋 Make sure that the headphone battery charge is at least 20% so that the process is not interrupted in the middle.
- 📶 If the headphones were previously paired with another phone, turn off Bluetooth on that device or reset the headset.
⚠️ Attention: Some headphone models automatically try to connect to the last used device. If the indicator flashes slowly or does not enter the fast flashing mode, try performing a full reset (Reset) according to the manufacturer's instructions.
To put most TWS headphones into pairing mode from scratch, place them in the case, open the lid and hold the settings button on the case for 3-5 seconds.
Activating Bluetooth on a Xiaomi smartphone
Interface MIUI offers several ways to control wireless modules. The fastest way is to use the notification curtain, but for the initial setup and search for devices it is better to use the full-fledged system settings menu. This will provide access to all additional options, such as the visibility of the device to others.
To enter the menu, open the application Settings on the main screen. In the list of sections, find the item Bluetooth, which is usually located at the top of the list or inside the “Connection and Sharing” category. Switch the slider to the active position if it is not already enabled.
After activating the module, the smartphone will begin automatically searching for available devices within range. Make sure your phone screen does not go dark during the search, as in some firmware versions power saving may pause scanning when the screen is locked.
The process of searching and pairing devices
When both devices are ready, the name of your headset should appear on the smartphone screen in the “Available devices” section. In the interface Xiaomi this list is updated in real time. If you see the name but cannot click on it, wait a few seconds until the system completes the initial handshake protocol.
Click on the device name in the list. The system initiates the process of creating a secure communication channel. At this point, a request to confirm pairing with a code or simply a notification about connecting the “Multimedia” and “Phone” profile may appear on the screen.
Sometimes the process takes longer than usual. This is due to the exchange of encryption keys between chips from different manufacturers. Do not press the cancel button, give the system 10-15 seconds to establish a connection.
☑️ Checklist for successful connection
After a successful connection, the device status will change to "Connected". Now the audio stream will be automatically routed to the headset when you start any media player or video service.
Setting up sound quality and codecs
For owners of smartphones Redmi with Snapdragon or MediaTek processors, advanced configuration functionality is available Bluetooth audio. In the developer menu or in the advanced Bluetooth settings, you can select the one used audio codec, which directly affects the quality of sound transmission.
By default, the system selects the SBC codec, which provides basic quality. However, if your headphones support more advanced standards, such as AAC, aptX or LDAC, you can switch to them manually to get Hi-Res sound.
| Codec | Bitrate (approximate) | Quality sound | Latency |
|---|---|---|---|
| SBC | 328 kbps | Basic | High |
| AAC | 256 kbps | Good | Medium |
| aptX | 352 kbit/s | High | Low |
| LDAC | 990 kbit/s | Hi-Res | Variable |
To change the settings, go to Settings → About phone and quickly click on the item MIUI version seven times until the notification “You have become a developer” appears. Then return to the main settings menu, go to Advanced settings → For developers and find the “Bluetooth Audio” section.
Where can I find codec settings in HyperOS?
In the new HyperOS shell, the path may be different. Try entering the word “codec” in the settings search or go to Settings → Bluetooth → Click on the gear next to the connected device → Audio codec.
⚠️ Attention: The developer menu interface and available codecs depend on the specific processor model and firmware version. If the required codec is not in the list, it means that your hardware or headphones do not support this data transfer standard.
Solving problems with connection and sound
The situation when the phone sees the headphones, but does not connect, or there is a connection but no sound, occurs quite often. Most often, the problem lies in the desynchronization of the A2DP (stereo) and HFP (calls) profiles. Reconnecting usually solves this problem.
Try removing the device from the paired list. To do this, click on the gear icon or arrow next to the name of the headphones in the Bluetooth menu and select Cancel pairing or Forget device. After this, repeat the search procedure from the very beginning.
If the problem persists, check your media access settings. In some cases, the "Multimedia" profile can be disabled by a checkmark in the details of the connected device, while the "Calls" profile remains active.
- 🔄 Restart your smartphone - this will clear the cache of Bluetooth system services.
- 🔇 Check whether the "Do Not Disturb" or "Silent" mode is enabled, which can block sound output to external device.
- 📡 Make sure there are no thick walls or strong sources of interference, such as microwave ovens or routers, between the phone and the headphones.
If the sound is interrupted or crackling, try turning off the “Absolute Volume Level” feature in the developer menu. This often solves problems of compatibility of signal levels.
Management of multiple devices and auto-connection
Ecosystem Xiaomi allows you to remember many devices, but usually one or two can actively work at the same time (in multipoint mode). The smartphone automatically tries to connect to the last used accessory when Bluetooth is turned on.
If you have several pairs of headphones and the phone connects to the wrong ones that are needed now, the easiest way is to temporarily disable the unnecessary device in the Bluetooth menu without deleting it from memory. This will prevent automatic connection the next time you turn on the module.
For advanced users, the function of quickly switching audio output through the control panel is available. Swipe down from the top right corner of the screen, find the media player control card and click on the audio output icon to select the active device manually.
⚠️ Attention: The function of simultaneous connection to two devices (Multipoint) depends on support from the headphones themselves, and not just from the smartphone. Check the specifications of your headset before expecting this feature.
Why are the headphones not charging in the case after connecting?
This is not related to Bluetooth. Check the contacts on the headphones and inside the case - they may have oxidized or become dirty. Wipe them with a dry cotton swab. Also make sure that the case itself is charged.
Is it possible to connect an Xbox or PlayStation controller to Redmi?
Yes, modern console controllers support the standard Bluetooth HID profile. The connection procedure is similar to connecting headphones: put the gamepad into pairing mode and select it in the list of phone devices.
How to increase the volume if it is too quiet on wireless headphones?
Try turning on “Absolute volume level” in the developer menu. Also check the settings of a specific music application - it may have its own equalizer or volume limiter.
The phone resets the connection every 5 minutes, what is the reason?
Perhaps aggressive energy saving is triggered. Go to the battery settings, find the "Bluetooth" application or "Bluetooth System Process" and set the power saving mode to "No restrictions".
Can I transfer files via Bluetooth to headphones?
No, headphones use A2DP and HFP profiles only to transmit audio stream. To transfer files, use the OPP profile, which is not supported by the headphones. Use Wi-Fi Direct or a cable for files.