How to connect a smartphone and Smart TV via Wi-Fi: all the methods + troubleshooting

Wireless synchronization of your smartphone and Smart TV opens up a lot of possibilities: from broadcasting video with YouTube to the big screen before using the TV as a monitor for games or presentations. However, many users encounter difficulties when first connecting—devices don't "see" each other, the connection drops, or the picture lags. In this article, we'll look at all current connection methods via Wi-Fi, including hidden settings and bypassing common errors.

It is important to understand that the connection method depends on TV models (For example, Samsung Tizen, LG webOS, Android TV), versions of the smartphone operating system (Android 12+ or iOS 15+) and even the router firmware. We'll look at universal solutions that work on 90% of devices, and also point out key differences for specific brands, where standard instructions fail.

If you have previously tried to connect devices and received errors like "Unable to connect to the device" or "Miracast is not supported"At the end of the article, there's a section on troubleshooting problems—there you'll find the exact steps to fix them.

1. Connecting via Wi-Fi Direct: The fastest way

Wi-Fi Direct — is a technology that allows devices to connect directly, without a router. It is built into almost all modern Smart TV (since 2016) and smartphones on Android 4.0+ or iOS 7+The main advantage of this method is minimal delays and high data transfer speed.

To activate the connection:

• 📺 On TV: go to Settings → Network → Wi-Fi Direct (on Samsung it could be Screen Mirroring, on LG — LG Connect). Turn on the function and remember the network name (for example, DIRECT-xx-SAMSUNG_XX).
• 📱 On your smartphone: open Settings → Wi-Fi, find the TV network and connect. Android You may be required to enter a PIN code (displayed on the TV screen).
• 🔄 After connecting, a confirmation request will appear on the TV - agree.

⚠️ Attention: On some models Xiaomi TV Wi-Fi Direct is disabled by default. To enable it, go to Settings → Advanced → Lab → Enable Wi-Fi Direct (the item may be called differently depending on the firmware).

The TV and smartphone are no more than 5 meters away|

VPN and power saving modes are disabled on your smartphone|

The TV is set to "Visible to all devices" mode (if there is such an option)|

Wi-Fi compatibility checked (5 GHz may not be supported by older TVs) -->

2. Using Miracast (Screen Mirroring) to mirror your screen

Miracast — a wireless image transmission standard that is supported by all Android devices (starting with version 4.2) and most Smart TVUnlike Wi-Fi Direct, you don't need to connect to the TV's network—you just need to activate the feature on both devices.

Instructions for Android:

1. Turn on the TV Screen Mirroring (on Sony Bravia — Cherkaslo, on Philips — Wireless Display).
2. On your smartphone, open Settings → Connected devices → Screen sharing (on Samsung — Smart View, on Xiaomi — Wireless Display).
3. Select the name of your TV from the list of available devices.
4. Confirm the connection on TV (a PIN code may be required).

⚠️ Attention: On iPhone Miracast is not supported natively. Use it instead. AirPlay (available at Apple TV and some models Samsung/LG (since 2018). If your TV is not compatible with AirPlay, install the app ApowerMirror or LetsView (requires connection to one Wi-Fi network).

Miracast speed depends on screen resolutions And codecsFor example, when transferring video to 4K Lag may occur. To reduce delays:

• 🔧 Lower the resolution on your smartphone to 1080p in the Miracast settings.
• 📶 Switch your router to a different range 5 GHz (if the TV supports it).
• 🚫 Close background apps on your smartphone, especially messengers and streaming services.

3. Connect via DLNA to transfer media files

DLNA (Digital Living Network Alliance) is a protocol for sharing music, video, and photos between devices on the same network. Unlike Miracast, it doesn't mirror the screen; it only streams media files. This method is suitable for watching movies, listening to music, or showing photos from your phone on TV.

How to set up:

1. Connect your TV and smartphone to one router (mandatory condition!).
2. Enable DLNA on your TV:
   • 📺 Samsung: Settings → General → External Devices → DLNA Device.
   • 📺 LG: Settings → Network → Media Sharing (DLNA).
   • 📺 Android TV: Settings → Network & Internet → Media Sharing.

Install a DLNA app on your smartphone, for example:

• 📱 Android: BubbleUPnP, LocalCast.
• 📱 iPhone: nPlayer, VLC.
• In the application, select the file to broadcast and specify your TV as the output device.

⚠️ Attention: Some televisions (eg. Xiaomi Mi TV 4A) block playback of files with higher resolutions Full HD via DLNA. To bypass the restriction, convert the video to MKV or MP4 with a bit rate no higher 20 Mbps.

Protocol	Speed	Delay	Supported files	A router is required
Wi-Fi Direct	High (up to 300 Mbps)	Low (50–100 ms)	Any	No
Miracast	Average (up to 150 Mbps)	Medium (100–200 ms)	Smartphone screen	No
DLNA	Low (up to 50 Mbps)	High (200–500 ms)	Media files (video, music, photos)	Yes
AirPlay (for iPhone)	High (up to 300 Mbps)	Low (50–100 ms)	Any (with DRM support)	No

4. Streaming apps: YouTube, Netflix, and more

Many streaming services (YouTube, Netflix, Twitch) have a built-in function for transmitting video to a TV. This method is easier than setting up DLNA or Miracast and works even on older models. Smart TV.

How to stream video:

• 🎬 YouTube:
  1. Open the video on your smartphone.
  2. Click on the icon Broadcast (in the upper right corner).
  3. Select your TV from the list.
• 🍿 Netflix/Disney+:
  1. Start the movie on your phone.
  2. Tap on the icon Cast (usually in the upper right corner).
  3. Confirm the connection on TV.
• 🎮 Twitch/Steam Link:
  1. Install the official app on your TV (if available).
  2. On your smartphone, in the broadcast settings, select Connect to the device.

⚠️ Attention: On some TVs (Samsung Series 5–7 2017–2019) function Cast works only for YouTube And NetflixFor other services you will have to use DLNA or Miracast.

If the icon Cast inactive:

• 🔄 Reconnect your TV and smartphone to the router.
• 📱 Update the app on your smartphone and the TV firmware.
• 🛠️ Turn on your router Multicast (in settings LAN → IGMP Snooping).
Why isn't casting from iPhone to Samsung TV working?

On TVs Samsung Support for models from 2016 to 2020 AirPlay implemented through proprietary technology SmartThingsIf the broadcast does not start:

1. Make sure that your TV has the latest firmware version installed (menu Settings → Support → Software Update).

2. On iPhone, turn on Bluetooth - it is used for initial authorization.

3. Reinstall the application SmartThings on the phone.

5. Using third-party applications (for advanced users)

If standard methods don't work, universal apps that support most devices can help. They're useful for:

• 🎮 Gamers (streaming games from your phone to TV).
• 💼 Presentations (slide show without HDMI cable).
• 📺 View local files without DLNA.

Top 3 applications:

Application	Platform	Peculiarities	Cons
ApowerMirror	Android/iOS + TV	Support 4K, screen recording, TV control	Paid version for 1080p+
LetsView	Android/iOS + TV	Free, low latency, support Game Mode	Advertising in the free version
LocalCast	Android + TV	Support DLNA, Chromecast, local subtitles	There is no version for iOS

Instructions for ApowerMirror:

1. Install the application on your smartphone and TV (if available) Google Play).
2. Connect both devices to the same Wi-Fi network.
3. On your smartphone, press M (Mirror) and select TV.
4. Confirm the connection on TV.

⚠️ Attention: When using LetsView on iPhone for broadcasting games (for example, Call of Duty Mobile) turn on the mode Game Mode in the application settings - this will reduce the delay to 80–120 ms.

6. Solving typical connection problems

Even with proper setup, the connection may not work. Let's look at the most common errors and their solutions:

🔴 Problem: TV is not visible in the list of devices

• 🔄 Reboot the router and both devices.
• 📶 Check that your smartphone and TV are connected to the same network (not a guest network!).
• 🛠️ Disable it on your router Isolation of clients (in settings Wi-Fi → Additional).
• 🔧 Update your TV firmware (relevant for LG webOS up to version 4.0).

🔴 Problem: The connection drops after 10-30 seconds

• 📵 Turn it off on your smartphone Power saving mode And Adaptive brightness.
• 🔌 Connect your phone to a charger - some models (Samsung A-series) limit performance when battery is low.
• 📡 Switch the router to a different channel 5 GHz (if TV supports it).

🔴 Problem: The image is slow or choppy

• 🖥️ Lower the broadcast resolution in the Miracast/Wi-Fi Direct settings.
• 🚫 Close all background apps on your smartphone.
• 🔄 If you use DLNA, convert the video to H.264 with bitrate 10–15 Mbps.

⚠️ Attention: On TVs Sony Bravia 2018–2020 when connecting via Miracast An artifact in the form of green stripes may appear. This is due to a firmware error. Solution: Update the TV's software or use Wi-Fi Direct.

7. Alternative methods: if Wi-Fi doesn't work

If a wireless connection is not possible (for example, due to device incompatibility), consider alternatives:

• 🔌 HDMI adapter:
  • For Android: USB-C/Micro-USB to HDMI (For example, DeX Station For Samsung).
  • For iPhone: Lightning Digital AV Adapter (official from Apple).
• 📶 Chromecast/Google TV: Connect the device to the HDMI port of the TV and stream content via Google Home.
• 🖥️ Steam Link: For streaming games from PC to TV via home network.

⚠️ Attention: When using USB-C to HDMI on smartphones Xiaomi or OnePlus you may need to enable the mode USB debugging (Settings → For developers).

FAQ: Frequently Asked Questions

Is it possible to connect an iPhone to a TV without Apple TV?

Yes, but with restrictions. Options:

• Use AirPlay on supported TVs (Samsung 2018+, LG 2019+).
• Install applications ApowerMirror or LetsView (one Wi-Fi network required).
• Connect Lightning to HDMI adapter (wired method).

On TVs without AirPlay, streaming from iPhone possible only through third-party applications or adapters.

Why is there no sound on the TV when connected via Miracast?

The problem is typical for Android TV and some models PhilipsSolutions:

• Check your smartphone settings Miracast the item is included Transmit sound.
• Restart both devices.
• If you use Bluetooth headphones, turn them off - the sound may be going to them.

On Samsung TV The sound sometimes disappears due to a codec conflict. Resetting the sound settings helps (Settings → Sound → Reset).

How to stream a smartphone screen to a TV via a router without Wi-Fi Direct?

Use DLNA or apps like LocalCast:

1. Connect both devices to the same router.
2. Turn on the TV DLNA or install LocalCast Receiver (if any) Google Play).
3. On your smartphone in the app LocalCast Select the file and specify the TV as the output device.

Suitable for screen duplication (not only media files) ApowerMirror or TeamViewer QuickSupport (the latter requires installation of a program on the TV).

Is it possible to play mobile games on TV via Wi-Fi?
Yes, but with some reservations:
• 🎮 Miracast/Wi-Fi Direct: Delay 100–200 ms - suitable for strategies, but not for shooters.
• 🕹️ Steam Link: Optimized for PC gaming, but you can stream emulators from your phone.
• 📱 ApowerMirror (Game Mode): Delay 80–120 ms — the best option for mobile games.
For minimal lags:
• Use a router with 5 GHz and channel 40–80 MHz.
• Connect your phone to a charger (power saving mode increases delays).
• Close all background applications.
How to connect an old TV (non-Smart TV) to a smartphone?

If the TV doesn't have Wi-Fi or Smart functions, use:

• 📦 Android TV Box (For example, Xiaomi Mi Box) - connects to HDMI and adds Smart functions.
• 🔌 HDMI adapter for smartphone (for example, USB-C to HDMI).
• 📶 Chromecast or Fire TV Stick - connect to HDMI and allow you to stream content via Google Home or Fire TV.

For TVs with VGA or Composite (tulips) an additional converter will be required HDMI-to-VGA.