Modern smartphones have a huge amount of memory, turning into real multimedia processors, but viewing content on a small screen is not always convenient. Technology DLNA (Digital Living Network Alliance) allows you to easily stream videos, music and photos from your device to a large screen TV or media player without the use of wires. This is a standard that is supported by most modern TVs, game consoles and media servers.
To take advantage of this opportunity, you do not need to be a professional system administrator. Android provides flexible tools for organizing a home network, although in recent versions of the system some functions have been hidden from the average user. We will look at how to turn your phone into a media server or, conversely, into a client for receiving content.
What is DLNA and how it works in the Android ecosystem
The principle of operation of the technology is based on creating a local network where devices exchange data directly. Your smartphone acts as a DMS (Digital Media Server) that stores files, and your TV acts as a DMR (Digital Media Renderer) that plays these files. The standard Wi-Fi protocol is used for communication, so the transmission speed directly depends on the quality of your router.
It is important to understand that DLNA is not a streaming service in the usual sense, like YouTube or Netflix. There is no cloud processing here; all traffic goes inside your apartment. This means that the picture quality will not drop due to overload of the provider's channels, but if the router is weak, there may be slowdowns when playing heavy 4K files with high bitrates. Previously, in shells from many manufacturers, such as heavy 4K files with high bitrate.
Previously in shells from many manufacturers such as Samsung or data-i="42">, the “Broadcast” or “AllShare” function has been built right into the gallery. Now Google has shifted its focus towards Google Cast (Chromecast) technology, so classic DLNA often requires the installation of third-party software. However, the protocol itself has not gone away and continues to be the most universal way to connect different brands of equipment. Xiaomi, the Broadcast or AllShare feature has been built right into the gallery. Now Google has shifted its focus towards Google Cast (Chromecast) technology, so classic DLNA often requires the installation of third-party software. However, the protocol itself has not gone away and continues to be the most universal way to connect different brands of equipment.
Use the 5 GHz Wi-Fi band to transmit high-definition video. The 2.4 GHz frequency is often overloaded by neighboring networks, which causes jerks in the picture.
Preparing the network and checking device compatibility
The first and most critical step is to ensure the correct network infrastructure. Both devices—the smartphone and the TV—must be on the same subnet. This means that they must be connected to the same router. If you have a dual-band router, make sure that both gadgets are connected to the same frequency, although modern routers usually correctly route traffic between the 2.4 and 5 GHz bands.
Check your router settings. Some corporate or guest networks enable Client Isolation, which prevents devices from seeing each other. For DLNA to work, this option must be disabled in the router's security settings. Without this step, no applications will be able to detect the target device.
- 📶 Make sure that Wi-Fi is turned on on your phone and that it is connected to your home network and not to the mobile data.
- 📺 Check whether your TV supports the DLNA standard (this is usually indicated in the instructions as “Media Server”, “Smart Share” or “Wi-Fi Direct").
- 🔒 Turn off the power saving mode on your smartphone, as it can block the network adapter in the background.
⚠️ Attention: If your TV is connected via a LAN cable and your phone via Wi-Fi, they will still see each other, but only if the router does not have Guest Network enabled for wireless clients.
Selecting and installing software for the server
Since standard Android tools have become less obvious, the best solution is to install a specialized server application. The store Google Play offers a wide selection of utilities, from simple to professional. Market leaders are considered BubbleUPnP, Hi-Fi Cast i LocalCast. These apps take on the task of indexing your files and providing them to network clients.
After installing the application, you will need to grant it the necessary permissions. Storage access needed for scanning media files, and local network access for device discovery. In Android 11 and newer, file access permissions have become more strict, so you may need to manually confirm access to folders through the system dialog.
In the settings of the selected application, find the section responsible for starting the server. This is usually the “Start Server” button or switch in the main menu. Once activated, the application will show your phone's IP address and the port on which the service is deployed. There is no need to remember them, but this information is useful for diagnostics if the TV does not see the phone automatically.
☑️ Checking server readiness
Step-by-step guide for connecting and broadcasting
The connection process can be divided into two scenarios: control from the phone or control from the TV remote control. In the first case, you use your phone as a remote control, selecting content in the application and directing it to the TV. In the second, the TV itself finds the phone in the list of signal sources.
Let's consider the control option from a smartphone, as it is more convenient. Open your server application (for example BubbleUPnP). Go to the “Devices” or “Devices” tab. Your TV should appear in the Renderers list. Click on it to select the playback target device.
Now go to the file library inside the application. Select the video, music or photo you want to show. When you click on a file, playback will begin immediately on the TV screen, and a control panel with Play, Pause and rewind buttons will appear on the smartphone screen. You can minimize the application and use the phone for other tasks, the broadcast will not be interrupted.
Path to the BubbleUPnP menu: Library -> Local -> Videos -> [Select file] -> Play to -> [Your TV]What to do if the TV does not appear in the list?
Try manually add a device by IP address. In the application settings, find the “Add Device” item and enter the address of the TV, which can be found in the network settings of the TV itself.
Setting up the TV as a DLNA client
If you prefer to control the process from the TV remote control, you need to activate signal reception on the TV side. Interfaces vary from manufacturer to manufacturer, but the logic is the same. You need to find the section responsible for external signal sources or network connections. On TVs LG this is the “Smart Share” application, on Samsung — “AllShare” or simply the “Media” section, on Sony — “Media Server.”
By going into the corresponding application on the TV, the system will begin searching for available servers on the network. If your phone is configured correctly (the server is running, the firewall is not blocking the connection), you will see the name of your smartphone or application in the list of sources. By selecting it, you will have access to folders with media files.
| TV Brand | Name of application/function | Type of supported files |
|---|---|---|
| Samsung | AllShare / Smart View | MP4, MKV, MP3, JPG |
| LG | Smart Share / Photo & Video | AVI, DivX, FLAC, PNG |
| Sony | Media Server / Video | MTS, M2TS, DTS |
| Philips | Media / Media servers | MKV, MP3, JPEG |
Navigation is carried out using standard remote control buttons. You can go into folders, sort files by date or name. Please note that the TV may not support some rare codecs even if the file transfers successfully. In this case, a format error message will appear on the screen.
TVs often have restrictions on the length of file names and the depth of nesting of folders. For better compatibility, store media in the root of the folder or in simple subfolders.
Solving problems and eliminating connection errors
Despite the simplicity of the standard, users often encounter a situation where devices do not see each other. The most common reason is the Windows Firewall, if you are using a PC as an intermediate link, or the security settings on the router. On Android, the problem most often lies in application permissions or Wi-Fi sleep mode.
Try rebooting the router. This is a trivial but effective piece of advice, since the router’s network stack may freeze and not correctly distribute multicast packets necessary for device discovery. Also make sure that your phone does not have Hotspot mode enabled, which may conflict with Wi-Fi client mode.
⚠️ Attention: Antiviruses and firewalls on your smartphone can block incoming and outgoing connections for unknown applications. Add your DLNA application to the exceptions manually.
If the video plays but is constantly buffering, the problem is the channel speed. Try lowering the quality of the streamed file or moving closer to the router. In some cases, statically setting the IP address on the TV helps to eliminate addressing conflicts on the local network.
If the sound lags behind the video during broadcast, go to the player settings on the TV and try changing the audio synchronization (Audio Delay) to 100-200 ms.
Alternative methods for transmitting content
It is worth mentioning that DLNA is not the only way. The Google Cast (Chromecast built-in) protocol is integrated into many modern TVs and applications like YouTube. It works differently: the phone sends only a link to the video to the TV, and the TV itself downloads it from the Internet. This saves the smartphone's battery, but requires that the content be available online.
For users who need to broadcast the phone screen (for example, games or presentations), technology Miracast or the “Broadcast” function in the Android notification shade is better suited. It duplicates the image one to one, creating a large load on the processor, but allowing you to display any content, including the settings menu.
The choice of method depends on your tasks. For watching downloaded movies from a local folder, DLNA remains king thanks to its subtitle support and high stability. For watching online videos, Cast is more convenient, and for screen sharing, Miracast is more convenient. Combine these tools for maximum comfort.
Why does the TV see the phone, but does not open files?
Most likely, the problem is in the file format. Built-in TV players often do not support modern audio codecs (for example, DTS or TrueHD) or containers. Try installing a third-party player on your TV, for example, VLC for Android TV, if the model allows installation of applications.
Is it possible to transfer files via DLNA via the mobile data?
No, classic DLNA only works within one local network (LAN). However, some apps allow you to create a hotspot on your phone that your TV connects to. In this case, the Internet on the TV will disappear, but the local broadcast will work.
Is it safe to open access to files via DLNA?
Within your home network using a WPA2/WPA3 password - yes, it is safe. Neighbors will not be able to connect to your server because they are on a different network. However, it is not recommended to turn on the server in public Wi-Fi networks (cafes, airports).
How to broadcast photos in high quality without compression?
DLNA transfers original files without compression. Make sure that in the settings of the server application the “Transcoding” or “On-the-fly Conversion” option is disabled, which can reduce quality for the sake of speed.
Does the connection disappear when the phone screen is locked?
It depends on the power saving settings. If the screen goes dark and Wi-Fi is turned off to save power, the broadcast will be interrupted. Go to the Wi-Fi settings and select “Keep Wi-Fi on in sleep mode” or add the player to the battery exception list.