Are you cozy on the couch, have chosen a movie on your phone, but the smartphone screen is too small for comfortable viewing? Transfer video from your mobile device to a large TV via Wi-Fi solves this problem in minutes—no wires, adapters, or extra costs. However, not everyone knows that there's at least 5 different technologies, each of which works in its own way: from built-in functions Samsung Smart View to the universal protocol DLNA.
In this article, we will analyze all the current methods of broadcasting content - from the simplest Screen Mirroring to advanced solutions like Google Cast or AirPlay. You will find out which method is suitable for your TV model (LG, Samsung, Sony, Xiaomi etc.), how to avoid image lag and why sound sometimes comes separately from the picture. And also— Why some high-definition (4K HDR) movies may not stream over Wi-Fi and how to work around it.
It doesn't matter if you use it Android or iPhone — The instructions will work for both types of devices. The main thing is that both the phone and the TV are connected. one Wi-Fi network (or supported Wi-Fi Direct). Let's start with the easiest way!
1. Screen Mirroring is a universal method for all TVs
Technology Screen Mirroring (or Miracast on Android) allows you to fully mirror your smartphone's screen on your TV in real time. This means that everything you see on your phone—from video to YouTube before the games - will be displayed on the big screen. The method works on most modern TVs (Samsung, LG, Sony Bravia, Philips, Xiaomi etc.) and does not require additional devices.
How to enable mirroring:
- 📱 On Android: open
Settings → Connections → Screen Mirroring(orMiracast,Smart View(depending on the model). - 🍎 On iPhone: swipe up for control panel and tap
Screen mirroring(Screen Mirroring). - 📺 On your TV: Activate the function in the menu
Network → Screen MirroringorWi-Fi Direct.
Once activated, your phone will begin searching for available devices—select the name of your TV. After a few seconds, your smartphone's screen will appear on the TV. Important: When mirroring, there may be a delay in sound (up to 1-2 seconds), especially if the router operates at a frequency 2.4 GHzTo minimize lag, switch to 5 GHz (if supported).
⚠️ Note: Some applications (eg. Netflix or Disney+) block the broadcast of content through Screen Mirroring due to copyright protection. In this case, use the alternative methods in the following sections.
2. DLNA: File transfer without screen mirroring
Protocol DLNA (Digital Living Network Alliance) allows broadcasting media files (videos, music, photos) directly from your phone to your TV without mirroring the entire screen. This is convenient if you just want to play a movie from your gallery or downloads folder without cluttering your smartphone with unnecessary processes.
How DLNA works:
- Make sure both your phone and TV are connected to the same Wi-Fi network.
- Turn on the function on your TV
DLNAorMedia server(usually in the sectionNet). - On your phone, use a player app that supports DLNA (for example, VLC, Kodi or standard Gallery on Samsung).
- Select the file to play and send it to your TV using the "Send to..." or "Play on..." menu.
The advantage of DLNA is that the phone can be used for other tasks while the movie is playing on TV. However, Not all video formats are supported - for example, files with the permission 4K or codecs H.265 (HEVC) may not play. In this case, converting the file to a lighter format (for example, MP4 with H.264).
3. Google Cast (Chromecast) – for Android and iOS
Technology Google Cast (known for devices Chromecast) allows you to stream content from supported applications (YouTube, Netflix, Kodi etc.) directly to the TV. The phone is used only as a remote control—the video itself is streamed from the internet to the TV, without loading the smartphone.
How to use Google Cast:
- 📱 Make sure you have the latest versions of apps installed on your phone and TV (e.g. Google Home for setting).
- 🖥️ Your TV must have a built-in Chromecast or an external adapter is connected (for example, Chromecast Ultra for 4K).
- 🎬 In a supported app (e.g. YouTube) Click on the broadcast icon (usually in the upper right corner) and select your TV.
The main advantage of Google Cast is minimal delay and the ability to broadcast content in high definition (up to 4K HDR (if you have a supported device). However, not all apps support this feature - for example, TikTok or Twitch may not have a broadcast option.
| Technology | Supported TVs | Delay | Max. permission |
|---|---|---|---|
| Screen Mirroring | Most modern TVs | 1-2 seconds | 1080p (rarely 4K) |
| DLNA | TV with media server | Minimum | Depends on codecs |
| Google Cast | TV with Chromecast or adapter | 0.5-1 second | 4K HDR |
| AirPlay (Apple) | TV with AirPlay 2 support | 0.3-0.8 seconds | 4K Dolby Vision |
4. AirPlay for iPhone and Apple TV owners
If you have iPhone or iPad, and the TV supports AirPlay 2 (or connected Apple TV), then broadcasting content becomes as simple as possible. This technology from Apple optimized for use with ecosystem devices and provides minimal latency even during playback 4K HDR.
How to stream via AirPlay:
- Connect iPhone and TV to the same Wi-Fi network.
- Open the video in an app (for example, Photo or Safari).
- Click the icon
AirPlay(rectangle with a triangle at the bottom) and select your TV.
AirPlay supports not only video, but also music, photos, and screen mirroring. However, some applications (For example, Amazon Prime Video) may limit AirPlay streaming due to licensing agreements. In this case, use HDMI adapter or DLNA.
Why can't AirPlay find my TV?
Make sure AirPlay is enabled on your TV (on some models LG or Samsung It must be activated manually in the network settings. Also, make sure both devices are connected to the same network—AirPlay doesn't work across different subnets or guest networks.
5. Manufacturer applications: Smart View, LG TV Plus, etc.
Many brands are developing their own apps for controlling TVs and streaming content. They often offer additional features such as voice control or access to Smart TV-services. Let's look at the most popular ones:
- 📺 Samsung Smart View: allows you to broadcast your screen, control your TV as a remote control, and even launch applications (Netflix, YouTube) directly from your phone. Works only with TVs. Samsung 2016 and newer.
- 🎯 LG TV Plus: supports Screen Share, voice search, and even streaming games from your phone to TV (with up to 30 ms latency). Account registration required. LG.
- 📱 Sony Video & TV SideView: in addition to broadcasting, it offers advanced sound and picture settings for TVs Sony Bravia.
To use the branded application:
- Download it from App Store or Google Play.
- Connect your phone and TV to the same Wi-Fi network.
- Follow the instructions in the app to pair the devices.
⚠️ Note: Branded apps may require a TV firmware update. If the casting feature isn't working, check for updates in the menu. Settings → Support → Software Update.
Install the latest version of the app|Connect your TV and phone to the same Wi-Fi network|Update your TV firmware|Enable the casting function in your TV settings|Disable the VPN on your phone (it may block the connection)-->
6. Troubleshooting: no sound, lag, TV not detecting phone
Even with proper setup, problems can still arise. Here are the most common ones and how to fix them:
- 🔇 No sound during broadcast: Check if the sound is muted on your TV or in the app. On some TVs (e.g., Samsung QLED) you need to manually select the sound source in the menu
Settings → Sound → Audio Source. - 🐢 Lags and delays: switch the router to a frequency
5 GHz(if supported) or reduce the video resolution (for example, with4Kto1080p). Also, close background apps on your phone. - 📵 The TV doesn't see the phone.: Restart both devices and the router. Make sure the TV is in the "Wi-Fi" mode.
Screen MirroringorWi-Fi Direct. - 🚫 The app is blocking the broadcast: some services (for example, Netflix or Amazon Prime) prohibit screen mirroring. Use Google Cast or DLNA.
If the problem persists, try resetting the network settings on your TV (Settings → Network → Network Reset) or update the firmware. On some models Xiaomi TV disabling the function helps AI Sound in the sound settings.
7. Alternative methods: HDMI adapters and TV boxes
If broadcasting via Wi-Fi is not possible (for example, due to an old TV without Smart TV), consider alternative options:
- 🔌 HDMI adapter (For example, USB-C to HDMI For Android or Lightning to HDMI For iPhone): connects directly to the TV and transmits images without delays. Supports
4K@60Hz, but requires USB power. - 📦 TV box (Apple TV, Nvidia Shield, Xiaomi Mi Box): connects to the TV via HDMI and allows you to stream content via Wi-Fi or EthernetSupports all modern video formats.
- 💿 USB media player: If the movie is saved on your phone, you can copy it to a flash drive and play it via the TV's USB port.
HDMI adapters are the most reliable solution for games and high-definition videos, as they don't rely on Wi-Fi speed. However, they do limit mobility: you have to keep your phone close to the TV. TV boxes, on the other hand, offer more options (for example, installation Kodi or IPTV), but require additional costs.
FAQ: Frequently asked questions about casting from your phone to TV
Is it possible to stream video from your phone to TV without Wi-Fi?
Yes, there are several ways:
- Use Wi-Fi Direct (direct connection between phone and TV without a router).
- Connect via HDMI adapter (cable needed).
- Use Bluetooth (music only, video is not supported).
Wi-Fi Direct is enabled in the TV settings (Network → Wi-Fi Direct) and on the phone (Settings → Connections → Wi-Fi Direct).
Why does the video lag when streaming via Screen Mirroring?
The reasons may be as follows:
- Weak Wi-Fi signal (check the distance to the router or switch to
5 GHz). - Congested network (disconnect other devices downloading files).
- High video resolution (try reducing the quality to
720p). - The TV firmware is outdated (update the software in the menu
Settings → Support).
How do I stream a movie from my phone to TV if I have an old TV without Smart TV?
Solution options:
- Buy HDMI adapter for the phone (for example, USB-C to HDMI or Micro-USB to HDMI).
- Connect TV box (Apple TV, Xiaomi Mi Box) to the TV via HDMI.
- Use Chromecast or Fire TV Stick - They connect to the HDMI port and add functions Smart TV.
- Copy the movie to a flash drive and play it through USB port TV.
Is it possible to mirror an iPhone screen to a Samsung TV?
Yes, but with some reservations:
- If the TV supports AirPlay 2 (models Samsung 2018 and newer), use the standard function
Screen Mirroringon iPhone. - If you don't have AirPlay, install the app Samsung Smart View (but it may not support all features).
- Alternative - HDMI adapter or Apple TV.
Why don't some movies stream over Wi-Fi?
This is related to:
- DRM protection (for example, films from Netflix or Disney+ block screen mirroring).
- Incompatible codecs (The TV does not support the video format, for example,
MKV with DTS audio). - High bitrate (Wi-Fi can't handle the data flow, for example, when
4K HDR).
Solutions:
- Use Google Cast or DLNA instead of mirroring.
- Convert your video to a supported format (eg.
MP4 with AAC audio). - Connect via cable (HDMI).