Modern users often face a dilemma: they've accumulated a ton of photos and videos on their smartphones, but viewing them on a small screen is inconvenient, while their old but beloved TVs are gathering dust. Fortunately, this technological gap can be bridged using wireless networking. Connecting a smartphone to a TV via WiFi allows you to stream content without unnecessary wires and complex settings, turning an ordinary TV into a multimedia center.
In this article, we'll cover all available methods, from built-in Smart TV features to third-party apps and special adapters. You'll learn how to set up Miracast, DLNA Or use Chromecast to display the image. Even if your TV is years old, there's a good chance it can be revived with the right approach.
Before you begin, you need to make sure that both devices - your mobile phone and TV - are connected to the same network. Wi-Fi routerThis is a critical requirement for the stable operation of most data transfer protocols. If the network is different—for example, a phone on 5 GHz and a TV on 2.4 GHz (in different subnets)—the devices may simply not "see" each other.
Equipment preparation and compatibility testing
The first step in the setup process is a thorough diagnosis of your existing equipment. Many users mistakenly believe that a Smart TV is required for streaming. In fact, having a built-in WiFi module on your TV significantly simplifies the process, but it's not the only solution. If your TV is an older model, manufactured before 2010-2012, it likely doesn't have built-in WiFi.
In such cases, it is necessary to check for free ports. HDMIThis interface is what transmits the video signal from the external receiver. If the HDMI port is occupied or unavailable, you can consider using a component input (RCA connectors), but this requires an active converter, which complicates the design. Compatibility check This also applies to your smartphone's operating system.
Android device owners have a wide range of options, as the OS supports native media transfer protocols. iPhone users are limited by the ecosystem. AirPlay, which requires a corresponding receiver on the TV. It's also important to ensure that the router supports the standard. Wi-Fi Direct, which is often used to directly connect devices without involving the main network.
⚠️ Important: If your router has a "Guest Network" feature, make sure both devices are connected to the main network. Guest networks often have client isolation, which prevents devices from seeing each other on the local network.
Using built-in Smart TV features (Miracast and Wi-Fi Direct)
If your TV is an early Smart TV model or you purchased a device that supports Miracast, the setup process is as simple as possible. This standard allows for high-definition image transmission with minimal latency. On Samsung TVs, this feature may be called Screen Mirroring, on LG — Miracast or Smart Share, and on Sony - Duplicate Display.
To activate the mode, find the button with the corresponding name on the remote control or enter the signal sources menu (Source or Input) and select the screen casting option. The TV will then go into connection standby mode. On an Android smartphone, pull down the notification shade and find the "Cast," "Smart View," or "Connect to Display Device" widget.
☑️ Check before connection
After searching for available devices, your TV should appear in the list. Click on it, and a connection confirmation prompt may appear on the TV screen, which you'll need to accept with your remote. It's worth noting that the technology Wi-Fi DirectThe underlying technology behind this method creates a direct connection between the devices, which can temporarily reduce the internet speed on your phone while you're browsing.
Picture quality depends on the TV's processor power and the radio channel's congestion. If you notice audio and video out of sync, try lowering the output resolution in your phone's settings or moving the router closer to the viewing area.
Why does the connection get broken?
Frequent connection drops when using Miracast are often caused by interference in the air or overheating of the TV's WiFi module. Try disabling 5 GHz channels on your router if they're causing interference, or switch to them if 2.4 GHz is too busy with neighbors.
Casting via Google Chromecast and repeater apps
For TVs that lack their own smart features, the ideal solution is to use an external set-top box. Google Chromecast or similar devices from Xiaomi and other brands. These small devices plug into the HDMI port and handle all the video decoding. This is the most reliable way to connect an old TV to your smartphone via WiFi, turning it into a fully-fledged Android TV.
Configuration is done through the application Google Home (formerly Chromecast built-in). After installing the app and connecting the set-top box to your WiFi network, your phone will automatically see the TV as an available output device. The advantage of this method is its support for a wide range of apps, including YouTube, Netflix, Spotify, and others that have a built-in cast button.
| Connection method | Required equipment | Latency | Quality |
|---|---|---|---|
| Miracast / Wi-Fi Direct | Smart TV or adapter | Low | High (up to 1080p) |
| Google Chromecast | Chromecast dongle | Average | 4K HDR (depending on model) |
| DLNA (Media server) | USB WiFi module in TV | No (files only) | Depends on the file |
| HDMI Adapter | Cable + adapter | Absent | Maximum |
In addition to hardware solutions, there are software emulators. Applications like Web Video Caster or BubbleUPnP Allows you to stream video files from your phone to your TV if it has a built-in DLNA client. You select a file in the app, it finds the TV on the network, and starts buffering the stream directly to the TV, without loading your phone.
Setting up a DLNA server to play files
Protocol DLNA (Digital Living Network Alliance) is a standard that enables the sharing of multimedia content between devices on a local network. Unlike Miracast, which broadcasts a screen in real time, DLNA is designed for playing pre-recorded files such as movies, music, and photos. It's a great option for sharing family archives on the big screen.
To implement this method, your TV must support DLNA (often labeled as DLNA Render or simply the presence of a USB/WiFi module). You need to install a server application on your smartphone, for example, LocalCast, BubbleUPnP or built-in player VLCIn the app settings, select the "Renderer" or "Playback to" option, after which your TV will appear in the list.
The process works like this: you open a video file on your phone, select an output device, and the TV automatically downloads and plays the stream. This frees up your smartphone's resources, allowing you to use it for other tasks or even turn off the screen to save power. Playback quality is limited only by your WiFi network speed and the TV's decoder.
⚠️ Please note: The DLNA protocol does not support all video formats. If your TV doesn't open the file, it may not support the codec (e.g., HEVC/H.265). In this case, on-the-fly transcoding in the player app will help, but this will require a powerful phone.
Using WiFi-enabled HDMI adapters
If your TV has no built-in functions at all, and you don’t want to buy a smart set-top box, you can use special HDMI adapters, such as Anycast, MiraScreen or EzCastThese compact "whistles" plug directly into the HDMI port and create a WiFi hotspot that your smartphone can connect to.
The device works by receiving a video stream and decoding it into an HDMI signal. To set it up, you need to switch the TV to HDMI mode (HDMI 1, HDMI 2 etc.). The adapter's start screen will appear on the screen, along with instructions and a QR code. After downloading the recommended app (indicated in the adapter's instructions), you can mirror your phone's screen.
It's important to understand the difference between adapters that work through a router and those that create their own network. The former (through a router) allow you to simultaneously surf the internet on your phone and stream video. The latter (creating their own network) can disconnect your phone from the global internet, as the phone's WiFi module switches to the adapter.
Troubleshooting connection and latency issues
Even with proper setup, users may encounter issues such as choppy video, out-of-sync audio, or a complete loss of connection. This is often due to congestion in the 2.4 GHz WiFi band. If neighboring routers, microwave ovens, or Bluetooth devices are nearby, the channel can become clogged.
Try to enter the router settings (usually at the address 192.168.0.1 or 192.168.1.1) and change your WiFi channel to a less crowded one (1, 6, or 11). Switching to the 5 GHz band also helps if your TV, router, and phone all support it. This will significantly increase channel throughput.
Another common issue is power saving. Some smartphones aggressively limit background WiFi activity to conserve battery life. Go to battery settings and disable power optimization for apps used for streaming. Also, make sure your TV's software is up to date, if available.
Why doesn't the TV see the phone in the list of devices?
Check if AP Isolation is enabled on your router. Also, make sure your antivirus or firewall isn't blocking local connections. Try rebooting both devices and the router.
Is it possible to connect an iPhone to a non-Smart TV without a set-top box?
Natively, no. The AirPlay protocol requires a dedicated receiver. However, if you have a computer (Windows/Mac) connected to your TV via HDMI, you can use it as an intermediary by installing an AirPlay receiver on your PC.
Does broadcasting affect internet speed?
When using Miracast/Wi-Fi Direct, traffic flows directly between devices, without loading the internet connection. When using Chromecast or DLNA, traffic flows through the router, which can reduce speeds on other devices when viewing heavy 4K content.
How to improve image quality when there are lags?
Move closer to the router and remove any obstacles between your phone and the router. In the streaming app settings, try changing the stream quality (Resolution) from 1080p to 720p.