Modern televisions have become powerful multimedia centers, capable of not only displaying video but also playing high-quality audio. It's common to find music files, playlists, or podcasts stored on your smartphone, but the phone's built-in speakers can't deliver the desired sound. Using wireless technology, you can instantly stream audio to a home speaker system or soundbar connected to your television, creating an immersive experience.
The main advantage of transmitting sound through local Wi-Fi network The advantage is the lack of lag and the ability to use the phone for other tasks. Unlike Bluetooth, where the connection often drops when moving far away, Wi-Fi covers the entire apartment. Furthermore, the wireless data transfer speed allows for streaming lossless audio files such as FLAC or ALAC, which require a wide bandwidth.
There are several proven methods for accomplishing this, each depending on your device's operating system and TV software version. We'll cover the most effective methods, from built-in DLNA protocol features to specialized streaming apps. Proper hardware configuration ensures stable operation without connection interruptions.
Preparing equipment and setting up the network
The first and most critical step is ensuring a unified network environment for all devices. Your smartphone and TV should be connected to the same router. If you have a dual-band router, make sure both devices are in the same frequency zone, although modern routers often combine 2.4 GHz and 5 GHz networks under a single name. Connection stability directly impacts the quality of the transmitted audio stream.
Check your TV's software is up to date. Manufacturers regularly release updates that improve network module performance and add support for new codecs. Go to the settings menu and select Support → Software Update and click the check button. If the TV hasn't been updated in a while, the syncing process with new mobile OS versions may not work correctly.
⚠️ Important: If your router is configured with AP Isolation, devices will not see each other on the network. This feature is often enabled on guest Wi-Fi networks. Make sure you are connected to your main home network, not the guest network.
It's also worth paying attention to the signal level. For transmitting high-resolution audio, especially in the format Hi-Res AudioA stable connection is required. If the TV is connected via Ethernet and the phone via Wi-Fi, problems usually don't arise. However, if both devices are connected wirelessly in a congested airwaves, micro-interruptions are possible. In such cases, it's recommended to use the 5 GHz band for less noise.
☑️ Checking connection readiness
Using DLNA technology for broadcasting
Protocol DLNA (Digital Living Network Alliance) remains one of the most universal methods for transferring media content between devices from different manufacturers. It allows the phone to act as a controller, and the TV to act as a renderer, receiving and playing data. This method doesn't always require third-party apps, as DLNA support is built into many standard Android and iOS players.
To start playback, open the gallery or file manager on your smartphone, select the music file, and press the cast button. Your TV should appear in the list of available devices. A permission request may appear on the TV screen, which you'll need to confirm with the remote. After that, you can control the tracks from your phone, and the sound will be played through the TV's speakers.
If standard tools fail to find the device, you can use specialized software. Apps like BubbleUPnP or VLC for Mobile have built-in DLNA client modules with advanced equalizer settings and playback queues. They allow you to stream not only local files but also online audio.
| Parameter | Description | Recommendation |
|---|---|---|
| Protocol | DLNA / UPnP | Basic standard for all TVs |
| Audio formats | MP3, AAC, FLAC, WAV | Check TV codec support |
| Control | From phone (Play/Pause) | A stable signal is required |
| Quality | Lossless | Depends on Wi-Fi speed |
Streaming via Google Cast and Chromecast
For Android users and owners of TVs with Android TV OS or a built-in module ChromecastThe most convenient option is Google Cast. It allows you to stream audio directly from streaming apps like YouTube Music, Spotify, or Yandex.Music, bypassing your phone's system limitations. In this case, the phone simply acts as a remote control.
The setup process is extremely simple: open the music app, find the streaming icon (the rectangle with waves in the corner), and select your TV. The main advantage of this method is that once playback starts, you can use your phone for other tasks, make calls, or even turn off the screen, and the music will continue playing. The TV takes care of data loading and buffering.
It's important to note that Google Cast requires you to be logged into the same Google account on both devices, although this isn't always a requirement for basic casting. If the feature isn't built-in, you can use the Google Home app to set up the device. This ensures minimal latency and high-quality sound, as data is transmitted directly from the cloud to the TV.
Play audio from your iPhone via AirPlay 2
The protocol is available to Apple device owners AirPlay 2, which provides seamless integration between iPhones, iPads, and compatible TVs. Many modern models from Samsung, LG, Sony, and other brands have built-in AirPlay support, eliminating the need for an Apple TV set-top box. The sound quality through this channel is considered one of the best among wireless solutions.
To connect, open Control Center on your iPhone (swipe down from the upper right corner or up from the bottom) and tap the Mirroring icon, or select the output device in the Music app. Select your TV from the list. The system will automatically match codecs and sample rates for optimal sound. If your TV isn't visible, check that AirPlay is enabled in the TV settings. Settings → General → Apple AirPlay Settings.
A unique feature of AirPlay 2 is the ability to create a stereo pair or multi-room system, where a TV can play in sync with HomePod speakers. The protocol also supports Dolby Atmos spatial audio, if the content and hardware support it. This transforms ordinary movie watching or music listening into a cinematic experience.
⚠️ Important: When using AirPlay, make sure your TV isn't in power-saving mode, which can disable Wi-Fi when the screen is turned off. Also, check that your router's firewall isn't blocking the ports used by the Bonjour protocol.
Alternative methods: Bluetooth and HDMI ARC
Although the main issue concerns Wi-Fi, sometimes the wireless network may be unstable, and then a BluetoothAlmost all modern TVs are equipped with a Bluetooth module. To connect, go to the TV's audio settings, select "List of Bluetooth devices," and search for your phone. This method is easier to set up, but has lower sound quality and a shorter range.
Another option worth mentioning for context is using Wi-Fi-enabled HDMI adapters, such as Chromecast with Google TV or Amazon Fire TV Stick, if your TV doesn't have smart features. These plug into the HDMI port and often support Wi-Fi. HDMI ARC (Audio Return Channel) to output sound to external speakers, although in this case we use them as a receiver of the signal from the phone.
Let's compare the key characteristics of wireless transmission methods so you can choose the best one for your situation. Each has its own use cases: Bluetooth is ideal for short videos, DLNA for local files, and Cast/AirPlay for streaming.
- 🎧 Bluetooth: Versatile, but compresses sound and has a delay.
- 📡 DLNA: Works with any files, but requires server configuration.
- 🌐 Google Cast/AirPlay: Better quality and convenience, but depends on internet connection.
Why might the audio lag behind the video?
Lip-sync issues often occur when streaming via Bluetooth or unstable Wi-Fi. In your TV settings, find "Sound Sync" or "Digital Audio Delay" and adjust the millisecond value until your lip movements align with the audio.
Problem solving and quality optimization
Despite the simplicity of the technology, users may encounter issues such as intermittent sound, missing devices, or low volume. Most often, the cause lies in the router settings. Make sure the function Multicast This is enabled because many device discovery protocols use multicast packets. Without it, the phone won't physically "see" the TV on the network.
If the sound is intermittent, try reducing the network load. Downloading large files or streaming 4K content on other devices can clog the bandwidth. In this case, switching the TV to a wired LAN connection, freeing up the Wi-Fi bandwidth exclusively for the phone, can help. Also, check if your router has speed limits (QoS) for specific devices.
In some cases, antivirus software on your computer or phone, as well as the built-in Windows firewall (if using your PC as a media server), may block the connection. Add your media app and TV to the exceptions list. For Android devices, the system may ask for permission to access the local network when you first connect—be sure to click "Allow."
Why doesn't the TV see the phone in the list of devices?
Most often, the devices are on different subnets (for example, one on 2.4 GHz for guest access, the other on 5 GHz). The issue could also be with the TV's Wi-Fi module drivers—try rebooting the router and TV completely by unplugging the power cord for 10 seconds.
Is it possible to stream Dolby Atmos sound?
Yes, this is possible via HDMI ARC/eARC when using compatible apps (e.g., Netflix, Disney+) and external speakers. When streaming over Wi-Fi (AirPlay 2, Chromecast), support depends on the specific codec and the TV's decoding capabilities.
Does streaming music affect my phone's battery life?
Using the Cast and AirPlay protocols minimizes battery consumption because the phone doesn't encode the video/audio stream, but only sends control commands. Using a DLNA server on the phone itself will consume more power because the Wi-Fi module is constantly transmitting data.