How to Play Music on Two Xiaomi Phones at the Same Time

Many Xiaomi smartphone owners often struggle to create a larger, louder sound by connecting two devices to the same sound source, whether it’s a home party where you want to fill a large room with music, or just wanting to share a track with a friend without losing quality, standard functionality of a “one speaker” may not be enough. Fortunately, the MIUI ecosystem and the capabilities of the Android operating system allow for scenarios for synchronization of audio, although they require some configuration.

This depends on what you think of as “switching on music.” If you’re playing the same track on two different devices with perfect synchronization (so there’s no echo), then special applications and Bluetooth features come into play. If the goal is simply to stream audio from one phone to the speaker of the other, the algorithm will be different. In both cases, connection stability is key.

It should be noted immediately that the native function of Xiaomi Sound (formerly known as MIUI Sound) is primarily focused on combining speakers into a single stereo pair or multiroom system with smart speakers, but with some reservations it can be adapted for the “smartphone-smartphone” bundle. However, for a full party, third-party software is often required that knows how to synchronize playback buffers over the Wi-Fi network.

Use of the built-in function of Xiaomi Sound

The first and most obvious way the manufacturer offers is through system audio settings, a feature Xiaomi Sound was introduced to create distributed audio systems, which allows you to combine compatible devices into a single network, managed from one remote, and to start work, you need to have both smartphones installed the current version of the MIUI shell or its modern version of HyperOS.

To activate the mode, go to Settings → Sound and Vibration → Xiaomi Sound. Here the system will suggest creating a new audio group. It is important to understand that the standard protocol often sees the second phone not as a sound source, but as a separate speaker. If both devices are on the same Wi-Fi network and authorized under the same Mi Account, the likelihood of successful pairing increases significantly.

⚠️ Note: Xiaomi Sound may not work correctly if one of the devices is installed global firmware, and the other – Chinese (CN Differences in system service versions often block device detection.

The setup process requires attention to detail. Make sure Bluetooth and Wi-Fi are active on both gadgets. The system uses Bluetooth for the initial handshake, and transfers data via Wi-Fi Direct or local network to ensure high throughput of the audio stream.

• 📱 Make sure that both devices are enabled with Bluetooth and are visible for search.
• 📶 Connect your smartphones to the same Wi-Fi network (preferably 5GHz band).
• 🔐 Log in to the same Mi Account on both devices via settings.
• 🔊 In the Music app or audio settings, select Group or Add Speaker mode".

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For best synchronization through Xiaomi Sound, place devices no more than 3-5 meters apart to minimize signal latency.

Synchronization through third-party applications (SoundSeeder and analogues)

When built-in tools are scarce, specialized applications designed specifically for synchronous playback come to the rescue, and the leader in this niche is already SoundSeeder, which turns your smartphone into a music system, and it works by creating a local network where one phone acts as a “host” and the rest as a “client” (clients/dynamics).

The main advantage of this approach is brand-independent second device, you can sync Xiaomi with Samsung, Huawei or iPhone, as long as they all have the same client, and the app automatically compensates for the delays that occur when transferring data over Wi-Fi by adjusting the playback buffer.

To start the process, install the app on both phones. On the device you're going to control (where the playlist is), select the "Host" role. On the second phone, run the app and select "Connect." After a short search, the devices will find each other, and the sound will go from both speakers simultaneously.

When broadcasting audio over Wi-Fi Direct, the battery consumption on the client device may be higher than usual, since the wireless module operates in a constant active data mode, and the application may require permanent permissions to access the local network.

Bluetooth Audio and Dual Audio Mode

Many users confuse the ability to play sound on two Bluetooth headsets from one phone with the ability to make two phones speakers. However, there is a scenario where one phone acts as a source and the second as a receiver, but with nuance. Some modern Xiaomi models support advanced Bluetooth profiles that allow you to broadcast sound.

The important distinction is whether you want music to play on two phones simultaneously and synchronously (like speakers), or whether one phone just transmits sound to the speaker of the other. A2DP Sink, which in Android 10 and above is hidden or limited. To implement a full-fledged "Dual Audio" (one source - two receivers) with regular means, Xiaomi usually does not support output to two Bluetooth devices unless it is TWS-headphones.

However, if your goal is to simply give away sound, you can use the Translation feature in Bluetooth settings. On the receiving device (second phone), you need to activate visibility mode and, in some cases, use an engineering menu or special A2DP Sink emulator applications so that the system recognizes the second phone as an audio headset, rather than a phone for calls.

⚠️ Note: When trying to connect a second phone as a Bluetooth headset without special applications, the system can automatically reset the connection, since the Android security protocol prioritizes calls, not media traffic from unknown devices.

For advanced users, there is a possibility of using ADB-commands to activate hidden Bluetooth flags, but this requires root rights or an unlocked bootloader, which is not recommended for ordinary users due to the risk of losing warranty.

adb shell settings put global bluetooth_dual_audio true

This command (if supported by a specific firmware version) can unlock the ability to connect two audio devices, but the stability of the smartphone-smartphone bundle is not guaranteed by MIUI developers.

Creating a party via Wi-Fi Direct and local network

The most stable method for parties is the use of Wi-Fi Direct. Unlike conventional Bluetooth, this protocol provides much higher data rates, which is critical for transmitting uncompressed or weakly compressed audio stream without artifacts and stuttering.

Applications that work on this principle (for example, AmpMe or the mentioned SoundSeeder in Wi-Fi mode) create a virtual room. The control phone downloads a track from memory or streaming service (Spotify, YouTube, Yandex.Music) and sends packets of data to other participants. Synchronization is done by time tags.

The key here is the quality of the Wi-Fi router. If you're in a place with a bad signal or an overloaded channel (many neighborhood networks), the sync may get lost, and one of the phones will start to "lag behind." In such cases, applications usually have a manual delay slider (Delay) to adjust the lagging speaker.

Interestingly, some streaming services, such as Spotify, have a built-in “Spotify Connect” feature that formally allows you to control playback on different devices, but does not play one track simultaneously on two phones with different accounts without using the aforementioned third-party “wrappers”.

Problems of desynchronization and ways to eliminate them

The most common problem when trying to turn on music on two phones is desynchronization. You can hear echoes when the sound from the second phone comes half a second late, which is due to different processing speeds and buffering.

To combat this, most synchronization applications have Auto-Sync, which periodically sends ping packets between devices and adjusts the playback speed. If the automation is not working, try to reduce the bitrate of the transmitted audio in the settings of the transmitter application.

There may also be problems with energy saving, with MIUI aggressively killing backgrounds, and in order to keep the music from interrupting on the second phone, you need to:

• 🔋 In the battery settings, select the "No Limits" mode for the player application.
• 🔒 Block the application in the menu of running tasks (swipe down the application icon).
• 📡 Turn off energy saving during the party.

Alternatives: wired connection and AUX

In the age of wireless technology, we often forget about proven methods. If sound quality is critical and delays are unacceptable, you can use a wired connection. This will require a special Y-shaped splitter for a 3.5 mm minijack if you have this connector in your phones, or USB-C to 3.5 mm adapters.

One end of the splitter connects to the sound source and the other two to active speakers or amplifiers connected to phones (using phones simply as a DAC and amplifier). However, to make one phone play music and the other simply amplify it through its speaker via cable, the standard Android means is not — the input of the microphone is not designed to receive a linear audio signal of this level without special equipment.

However, there is a concept of a Link Play via an AUX cable, where one phone is the source and the second phone connected via AUX to the first (if the second phone supports input through the headset jack, which is rare in modern models without a special adapter adapter), can broadcast sound. But this is more of an exotic scenario.

A more realistic wired option - use USB-By connecting two external DACs (or phones in audio-exit mode) to the hub, you can theoretically achieve synchronous output, but this requires complex configuration and support from the kernel. Linux/Android, What at home is practically not feasible without reassembling firmware.

FAQ: Frequently Asked Questions

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Perfect synchronization of two phones is only possible through specialized applications that use Wi-Fi Direct, as standard Bluetooth is not designed to transmit a single audio stream to two independent devices without unsynchronous.

In conclusion, building a stereo pair or just a louder system of two Xiaomi phones is a complete solvable task. Start by testing the native Xiaomi Sound feature, and if it doesn't meet your needs, safely install SoundSeeder. Proper network setup and power-savings will be the key to the success of your party.