Modern smartphones have high-resolution screens, but they still can't compare to the size and image quality of a large TV. Content broadcasting Wireless networking has become a standard, eliminating the need to hunt for cables and run them across the room. This is convenient when you need to share vacation photos, play a movie from an online cinema, or even a presentation.
There are several proven ways to Android or iPhone connect to smart TV. The key condition for all methods is that both devices are on the same local WiFi network. If your router distributes internet, phone, and TV data, you can set up the connection in seconds. The only differences are in the protocols and operating systems used.
In this article, we'll cover all current connection options, from built-in system features to third-party apps. You'll learn how to troubleshoot common errors when devices don't "see" each other, and understand the difference between simple mirroring screen and streaming media files.
Basic technologies for wireless video transmission
Before moving on to settings, it is important to understand which technologies allow video signal transmission. Miracast — is a standard developed by the Wi-Fi Alliance that allows video and audio to be transmitted directly from a device's screen without or through a router (Wi-Fi Direct mode). It is often found in televisions. Samsung, LG and consoles based on Android TV.
The second popular protocol is AirPlay, developed by the company AppleIt provides stable content transmission with high bitrates and minimal latency. Unlike Miracast, AirPlay often requires a router to buffer data, although modern versions also support direct connections. This protocol is natively supported by TVs. Sony, Samsung and platform tvOS.
The third option is technology DLNA (Digital Living Network Alliance). It doesn't broadcast the entire screen, but allows you to "feed" specific files (videos, photos, music) stored on your phone to the TV. This is done using dedicated media server apps.
⚠️ Please note: Older TVs (Smart TVs manufactured before 2015) may not support modern codecs. In this case, streaming is only possible through external set-top boxes.
Each technology has its own advantages. Miracast is ideal for screen sharing, AirPlay is ideal for the Apple ecosystem, and DLNA is ideal for playing large files from local storage without compression. The choice of method depends on your goals and the equipment you have.
Preparing equipment and network
Ninety percent of the success of the operation depends on properly setting up your home network. Make sure your router is stable and broadcasting a 5 GHz signal. This frequency provides higher throughput, which is critical for transmitting 4K or HDR video.
Make sure both devices—your smartphone and TV—are connected to the same network. Routers often create two networks with similar names (e.g., HomeWiFi And HomeWiFi_5G). If the phone is connected to one network and the TV to another (or to a guest network), they may not detect each other.
It's also worth updating the software on both devices. Manufacturers regularly release patches that improve connection stability. On a TV, this is usually done through the menu. Settings → Support → Software UpdateOn a smartphone, the update depends on the OS version.
⚠️ Note: If you're using Guest Network mode on your router, devices may be isolated from each other. To stream video, switch to your main network.
It's a good idea to reboot your router before starting the setup. This will clear the cache and eliminate any potential IP address conflicts that often prevent devices from being detected on the local network.
Casting from Android: Built-in Tools and Google Home
Owners of smartphones based on Android There are several ways to connect. The easiest way is to use the "Broadcast" or "Smart View" function. It's built into the system shell and doesn't require any additional software.
Pull down the notification shade and find the icon Broadcast, Smart View or Broadcast your screenThe name depends on the manufacturer (Samsung, Xiaomi, Huawei). Click it, and the system will begin searching for available devices. Select your TV from the list.
☑️ Pre-launch check
If the built-in function does not work, use the official app Google HomeIt allows you to control Chromecast devices and TVs with built-in Chromecast built-inAfter installing the application:
- 📱 Open the Google Home app on your phone.
- 📺 Find your TV in the list of devices.
- ▶️ Click "Cast screen".
- ✅ Confirm the connection on the TV screen if prompted.
To watch videos from YouTube or Netflix, it's easier to use the cast button within the app itself. Find the rectangle icon with waves (Cast) in the corner of the video, select TV, and your phone will act as a remote while the video streams directly from the server to your TV.
How to display an image from iPhone and iPad (AirPlay)
For ecosystem users Apple luckiest of all thanks to technology AirPlay 2It's built into the system and works very reliably. Make sure AirPlay support is enabled on your TV (usually in the network or connection settings).
Open Control center On an iPhone (swipe down from the upper-right corner or swipe up on older models). Tap the "Screen Mirroring" button (two rectangles). Select your TV from the list. If prompted, enter the code displayed on the TV screen into the field on your smartphone.
What should I do if AirPlay doesn't detect my TV?
Make sure "AP Isolation" isn't enabled on your router. Also, check that your firewall isn't blocking ports used by the Bonjour/mDNS protocol, which is responsible for discovering Apple devices on the network. Sometimes, temporarily disabling the VPN on your phone can help.
It's important to note that AirPlay not only allows you to mirror your screen but also stream video in the background. For example, you can start a movie, lock your phone, and use it for other tasks while the video continues playing on the big screen. This saves battery life.
| Characteristic | Miracast (Android) | AirPlay 2 (iOS) | DLNA |
|---|---|---|---|
| Picture quality | Depends on the signal | High (up to 4K HDR) | Original (uncompressed) |
| Latency | Average | Low | Absent (streaming) |
| Work in the background | No (the screen is on) | Yes (the video continues playing) | Yes |
| Compatibility | Android, Windows | iOS, macOS | All platforms |
Using third-party applications and media servers
If built-in methods don't work or your TV is old, third-party apps can help. The leader in this area is Web Video Caster or BubbleUPnPThey allow you to stream video from your browser or file manager directly to your TV using the DLNA or Cast protocol.
The principle is simple: you install the app on your phone and, in some cases, the receiver on your TV (if it's an Android TV). The app scans the network, finds the TV, and sends it a link to the video stream. The TV downloads and plays the video automatically, offloading the phone's processor.
For TV owners Samsung And LG there are branded applications (Smart View And LG TV Plus (respectively). They offer advanced functionality, including remote control from the smartphone screen and file transfer from the gallery. However, they may be more demanding on the TV's operating system version.
Troubleshooting connection and latency issues
A common issue is audio and video desynchronization or constant buffering. This almost always indicates a weak WiFi signal or a congested channel. Try moving closer to the router or moving the router closer to the TV.
If the image is choppy, reduce the playback quality in the app (for example, from 4K to 1080p). Also, check if anyone on your network is downloading heavy files (torrents, game updates) and clogging up your bandwidth.
Sometimes resetting the network settings on your TV helps. Go to Settings → Network → Network Reset, then re-enter your WiFi password. These are old, possibly incorrect IP address configurations.
Why doesn't my phone see my TV in the list of devices?
The most common issue is that the devices are connected to different router frequencies (2.4 GHz and 5 GHz), which some routers isolate from each other. Also, check if the "Guest Network" feature is enabled. Make sure a signal-receiving app (such as "Cast" or "Screen Share") is open on the TV.
Is it possible to stream video via mobile Internet (3G/4G)?
Standard methods (Miracast/AirPlay) require a local WiFi network. However, apps like YouTube or Netflix allow you to stream content even if your phone is on mobile data and your TV is on WiFi, as long as they are logged into the same account and are on the same network (Cast feature). Direct screen mirroring over mobile data is impossible without specialized, complex router settings.
Does broadcasting affect internet speed?
Yes, streaming video, especially in high definition (4K), consumes a significant amount of bandwidth. If you're watching an online movie, your router must constantly receive data from the internet and transmit it to your TV. This can slow down other devices on the network.