Modern technology allows you to turn your smartphone into a personal audio center, but sometimes the opposite need arises: to transmit the audio stream from the big screen to your mobile device. Outputting audio from a TV to a phone This may be necessary for a variety of reasons: from the desire to watch a late-night movie without disturbing sleeping family members to the need to improve the audio quality through professional headphones connected to a phone. Standard TV speakers often struggle to convey the subtle nuances of an audio track, while mobile devices can serve as an excellent bridge to an external speaker system.
Technically, this process is not trivial, as most TV manufacturers initially design their systems for signal transmission on external devices, not With them. However, using the capabilities of wireless networks Wi-Fi These limitations can be circumvented using specialized protocols. In this article, we'll examine in detail various methods for implementing such transmission and evaluate their quality and stability.
It's worth noting that there's no universal "Stream audio to phone" button in every TV's menu. You'll need to use a combination of built-in Smart TV features, third-party apps, or operating system hardware. It is critical to understand that audio latency over Wi-Fi can range from 200ms to 2 seconds, making watching fast-paced movies or playing games in real time uncomfortable without special synchronization. We will consider methods that minimize this effect.
Using built-in Smart TV features and mobile apps
The most common way to connect a TV and smartphone is to use the manufacturer's ecosystem. Major brands like Samsung, LG, Sony, and Philips develop their own remote control apps, which often offer advanced functionality. For example, the app Samsung SmartThings or LG ThinQ They allow not only channel management but also media stream redirection. However, direct audio channel transmission in real time is rarely implemented here; file streaming is more common.
If your TV runs on an operating system Android TV or has a built-in Chromecast, the possibilities expand significantly. You can use audio streaming apps that use the Google Cast protocol. In this case, the phone and TV must be on the same Wi-Fi network. The procedure typically involves launching the app on your smartphone, selecting the output device, and activating the casting mode.
- 📱 Install the official app from your TV manufacturer from Google Play or the App Store.
- 📡 Make sure both devices are connected to the same Wi-Fi network (this is important to ensure that client isolation is not enabled).
- 🔊 In the app settings, find the "Sound" or "Audio Output" section and select your smartphone as the target device.
Don't expect perfect quality when using standard tools, as they are often optimized for control rather than low-latency audio streaming. DLNA protocol, which is often used in such combinations, is also more suited to file transfers rather than live audio streams. However, it may be sufficient for listening to background music or radio through a TV.
⚠️ Please note: The functionality of built-in apps is constantly being updated. The interface and availability of specific options may vary depending on the TV firmware version and your smartphone model. Always check the "Support" section on the manufacturer's website for the latest information for your model.
Bluetooth Streaming: An Alternative to Wi-Fi
Although the main request concerns wireless networks, it cannot be ignored Bluetooth, which often works in tandem with the TV's Wi-Fi module. Many modern Smart TVs are equipped with a Bluetooth module that allows you to connect wireless headphones or speakers. If your phone supports Bluetooth receiver mode (rare for standard Android/iOS without root access) or if you use your phone as a gateway, this may be a solution. However, more often, the scenario is different: the TV acts as a transmitter, and the phone acts as a receiver via special emulator apps.
To stream audio from a TV to a phone via Bluetooth protocols, emulator apps are often required that make the phone "pretend" to be a Bluetooth headset. On Android, this is possible using utilities like Bluetooth Audio ReceiverThe TV scans the network, detects your phone as an audio device, and connects to it. Sound quality in this case will depend on the supported codecs: AAC, aptX or basic SBC.
The advantage of this method is that it doesn't burden the Wi-Fi channel, which is important if the network is overloaded with other smart home devices. Audio latency can also be lower than when transmitting over TCP/IP Wi-Fi protocols, but the range is limited to a few meters. For a stable connection, the phone must be in close proximity to the TV.
Remote control and audio streaming apps
Third-party developers have created numerous solutions to circumvent the limitations of standard software. Apps in the "Remote Control" category often feature "Audio Monitor" or "Sound Mirroring." These apps work by having an app on your TV (if there's an app store) or a dedicated service capture the audio stream, compress it, and send it over the network to a client app on your smartphone.
One popular solution is to use screencasting apps with audio, such as TeamViewer (in rare cases supported on TVs) or specialized utilities for Android TV. A more effective method is to use media streaming apps that can also capture system audio if the TV allows it to be passed to the app. For example, a player VLC It has a "Renderer" feature that allows you to stream between devices, but setting up reverse streaming (from TV to phone) requires complex network configuration.
- 📥 Install the client app for remote access on your TV (via APK or store) and on your phone.
- 🔗 Link devices via the QR code or PIN code displayed on the screen.
- 🎧 In the app settings on your phone, activate the "Listen to TV sound" or "Audio Streaming" mode.
It's important to understand that such apps place additional strain on your TV's processor. If your TV model isn't particularly powerful, you may experience video stuttering or audio and video desynchronization. In such cases, it's best to use methods that don't require installing heavy software on your TV.
⚠️ Warning: Using third-party apps from unknown sources on your Smart TV may result in personal data leakage or system instability. Download software only from official stores (Google Play Store on TV, LG Content Store, etc.).
Why does audio desynchronization occur?
Lip-sync errors occur due to the time it takes to encode the audio stream on the TV, transmit it over the network, and decode it on the phone. Wi-Fi networks, especially those at 2.4 GHz, are susceptible to interference, which increases buffering. To minimize latency, use a 5 GHz network.
AirPlay for Apple Device Owners
Ecosystem users Apple are in a better position thanks to technology AirPlay 2Many modern TVs (Samsung, Sony, LG, Vizio) have built-in support for AirPlay 2. Although the main scenario is broadcasting With iPhone on There are ways to use this infrastructure for audio monitoring. However, it's impossible to directly stream audio from a TV to an iPhone via standard AirPlay, as the protocol is one-way in the consumer segment.
However, if you have Apple TVWhen connected to a TV, the situation changes. You can use the Private Listening feature in the Apple TV Remote app on your iPhone. Audio from the set-top box (and therefore from the TV if the source is set to Apple TV) is transmitted to headphones connected to the phone. This is the perfect way to watch movie nights wirelessly.
For TVs with built-in AirPlay 2, a feature is sometimes available in the app Apple Home or in the TV's settings, allowing you to redirect audio to a HomePod or iPhone, but this depends on the manufacturer's specific implementation. For owners iPad And iPhone It's also worth paying attention to remote control apps that emulate the Apple TV Remote and may have hidden audio output features.
| Method | Latency | Sound quality | Difficulty of setup |
|---|---|---|---|
| Bluetooth (emulation) | Average (200-400 ms) | Average (depending on codec) | High |
| Manufacturer's applications | High (>500 ms) | Low/Medium | Low |
| AirPlay (via set-top box) | Low (optimized) | High | Low |
| DLNA/Streaming | Very high | High | Average |
Using HDMI extractors and network equipment
If software methods do not produce the desired result or the sound quality is unsatisfactory, you can turn to hardware solutions. HDMI audio extractors They allow you to extract the digital audio stream from the HDMI cable connected to your TV and convert it into an optical or analog signal. This signal can then be fed to a Bluetooth transmitter, which will send the audio to your phone (if it supports A2DP) or directly to wireless headphones.
A more advanced option for geeks is to use Wi-Fi transmitters With aptX Low Latency support. The device connects to the TV's optical output (if available) or via an HDMI extractor, creating its own wireless network for audio transmission. In this case, the phone simply acts as a receiver, or the audio is transmitted directly to a dedicated Bluetooth receiver connected to the headphones, bypassing the phone.
This method requires the purchase of additional equipment, but guarantees minimal latency and high-quality sound, regardless of your home Wi-Fi network load. It's a professional approach to the problem, often used in home theaters.
- 🔌 Get an HDMI Audio Extractor with 4K and HDCP support to maintain picture quality.
- 📡 Connect the Bluetooth transmitter to the extractor's audio output (3.5 mm or Optical).
- 🎧 Pair the transmitter with your Bluetooth headphones or phone in receiver mode.
⚠️ Caution: When using HDMI extractors, make sure they support the same HDR standards and resolutions (4K, 8K) as your TV, otherwise the picture may not be transmitted or may flicker.
☑️ Checking readiness for hardware connection
Solving latency and audio quality issues
The main problem with wireless audio transmission is desynchronization. When you see the actors' lips moving and the sound arrives late, it becomes impossible to watch the content. To minimize this effect, you need to use the network first. Wi-Fi 5 GHzThe 2.4 GHz frequency is too busy and slow for real-time audio streaming.
It's also worth checking your TV settings. Many models have an "Audio Sync" or "Lip Sync" option, which allows you to manually shift the audio track. If you use remote apps, try lowering the stream quality in their settings from "High" to "Medium"—sometimes less data transfers faster. Codecs also play a role: AAC is usually processed faster than heavier uncompressed formats.
If all else fails and latency remains critical, the only option is to use wired headphones connected directly to the TV's 3.5mm jack or optical output (via a DAC), or switch to dedicated wireless headphones with their own USB transmitter plugged into the TV's USB port. This is the only way to achieve lag-free sound comparable to a wired connection.
Is it possible to output sound via USB cable?
Directly outputting audio from a TV to a phone via a USB cable is virtually impossible without complex software modifications (root access, ADB debugging, specific software). USB on TVs typically only works in host mode (for flash drives) or for connecting peripherals, but not for transmitting audio to an external mobile device. A Bluetooth adapter is easier to use.
Why doesn't the TV see the phone in the list of devices?
The most common cause is client isolation in the router settings, which prevents devices on the same Wi-Fi network from seeing each other. Also, check whether the "Broadcast" or "Smart View" feature is enabled on the phone itself, and whether the antivirus firewall is blocking network requests.
Does this method work for game consoles?
Yes, if your console (PS5, Xbox) is connected to a TV and you output the TV audio to your phone, the game audio will also be output to your phone. However, latency will be critical for games, so this method is only suitable for watching movies or listening to music on a stand-alone basis.