Broadcasting the smartphone screen to a large TV screen Android TV opens up new opportunities: from watching movies in high definition to demonstrating presentations or running mobile games on a wide display. However, not all users know that there are several methods of image transmission - and they differ in speed, quality and equipment requirements.

In this article we will analyze all current methods broadcasts from Androidsmartphones (including models Samsung Galaxy, Xiaomi Redmi, Google Pixel and other brands) to TVs from Android TV (for example, Sony Bravia, Philips, Xiaomi Mi TV or prefixes NVIDIA Shield). You will learn how to do without wires, what to do if there is a delay in sound, and why sometimes the picture “breaks”. And also - how to enable developer mode on Android TV for advanced broadcast settingsif standard methods do not work.

1. Wireless broadcast via Miracast: universal standard

Technology Miracast is a built-in Android protocol for wireless screen transfer without additional devices. It works on most modern smartphones and TVs with Android TV, but requires support from both devices.

To start broadcasting:

  • 📱 On a smartphone: open Settings → Connected devices → Screen sharing (to Samsung — Settings → Connections → Smart View).
  • 📺 On TV: go to Settings → Network and Internet access → Miracast (or Wireless display).
  • 🔄 Select the name of your TV in the list of available devices on your phone.

Miracast transmits both video and sound, but delay can reach 100-200 ms - this is enough for movies, but not always comfortable for games. Also note that some applications (for example Netflix or YouTube) may block the broadcast due to DRM protection.

⚠️ Attention: If the TV does not appear in the list of devices, check whether it is turned on mode Wi-Fi Direct and whether the versions are the same Android on both devices (the minimum version for Miracast is Android 4.2).

Both devices are connected to the same Wi-Fi network|The "Wireless Display" mode is enabled on the TV|VPN is disabled on the phone|The phone screen resolution does not exceed that supported by TV (usually 1920×1080)

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2. Google Cast (Chromecast): for streaming content

If you need to broadcast not the entire screen, but only video from applications (YouTube, Kinopoisk, Twitch), then the technology Google Cast (implemented in devices Chromecast and built into many Android TV) is better suited. It is optimized for streaming and supports resolutions up to 4K HDR.

How to use:

  1. Make sure that your phone and TV are connected to the same Wi-Fi network.
  2. Open a supported application (for example, YouTube) and click the icon Cast (usually in the upper right corner).
  3. Select your TV from the list.

Advantage Google Cast - minimal delay and the ability to control playback from your phone However not all applications support this function. For example, TikTok or VK Video may not have a built-in broadcast button.

Technology Latency Max resolution Internet required Audio support
Miracast 100–200 ms 1080p No (Wi-Fi Direct) Yes
Google Cast 50–100 ms 4K HDR Yes (one network) Yes
HDMI cable 0 ms 4K@60Hz No Yes
📊 Which broadcast method do you use most often?
Miracast
Google Cast (Chromecast)
HDMI cable
Other

3. lag

If you need minimal picture lag (for example, for games or professional tasks), then wired connection via HDMI is the best choice. For this you will need:

  • 📱 Adapter USB-C/Micro-USB → HDMI (depending on the phone connector).
  • 📺 Cable HDMI (version 2.0 or higher for 4K).
  • 🔌 Power supply for the adapter (some models require an additional USB connection).

Instructions:

  1. Connect the adapter to the phone, and the cable HDMI to the TV.
  2. On the TV, select the appropriate one HDMI input as a signal source.
  3. On your phone, you may need to enable the mode USB transfer data or MHL/DisplayPort (depending on the model).

Advantages of the method: zero delay, support for high resolutions and signal stability. Disadvantages - the need to purchase an adapter (cost from 500 to 3000 rubles) and “binding” the phone to the location.

⚠️ Attention: On some smartphones (for example, Samsung Galaxy S22+ or OnePlus 10 Pro) to display the image by HDMI you need to enable Developer mode and activate the option USB debugging.
Why doesn’t the phone output an image via HDMI?

If after connecting the TV screen remains black, check:

1. Compatibility of the adapter with your phone model (some). brands, for example Huawei, use proprietary protocols).

2. Is there enough power for the adapter (connect it to the charger).

3. Is the mode turned on on the phone Image transmission (on Xiaomi this could be Second screen).

4. Broadcasting through mirror applications: alternative solutions

If the built-in methods do not work, you can use third-party applications:

  • 🔹 ApowerMirror - Supports screen recording and PC control.
  • 🔹 TeamViewer QuickSupport — for remote broadcasting (useful for technical support).
  • 🔹 Screen Mirroring (from the TV manufacturer) — for example, LG Screen Share or Samsung SmartThings.

Setting example ApowerMirror:

  1. Install the application on your phone and TV (if there is a version for Android TV).
  2. Connect both devices to the same network Wi-Fi.
  3. On your phone, press Start Now, and on your TV - Accept connection.

Disadvantages of this approach: advertising is also possible in free versions. Pros - they work even on older devices and allow you to broadcast the screen to several displays simultaneously. image artifacts and advertising in free versions. Pros: They work even on older devices and allow you to broadcast the screen to several displays simultaneously.

5. on Android TV: advanced settings

If standard broadcast methods do not work, you can activate hidden functions via Developer mode. This will help:

  • 🔧 Enable debugging ADB to diagnose problems.
  • 🔄 Change parameters Wi-Fi Direct or Miracast.
  • 📡 Optimize stream buffering.

How to enable developer mode on Android TV:

  1. Go to Settings → About TV → Build number.
  2. Click on Build number 7 times in a row until a notification appears You have become a developer!.
  3. Go back to Settings → For developers and activate:
    4. USB debugging (or network)

    Do not turn off the screen while charging
    

    Force Miracast on

After this you can use ADB commands for fine tuning. For example, to check supported broadcast resolutions, run:

adb shell dumpsys display
⚠️ Warning: Careless changes in developer mode may cause the TV to malfunction. Before experiments, write down the current settings or create a backup copy.
💡

Activating developer mode allows you to manually specify the priority broadcast protocol (Miracast or Wi-Fi Direct) if automatic selection does not work correctly.

6. Solving problems: why the broadcast does not work

If the screen is not broadcast or the image is “torn”, check:

Problem Possible reason Solution
The TV is not visible in the list devices Disabled Wi-Fi Direct or Miracast Enable the mode on TV manually through the network settings
Sound is transmitted, but there is no image DRM protection in the application (for example, Netflix) Use Google Cast instead of Miracast
Strong lags when broadcasting games Lack of Wi-Fi bandwidth Connect the router to the network 5 GHz or use HDMI

If the problem is not solved, try:

  • 🔄 Restart your phone and TV.
  • 📶 Connect to another network Wi-Fi (or use a mobile hot spot).
  • 🔧 Reset the network settings on both devices.

On some TVs (for example, Sony Bravia will help. 2020–2023), the broadcast may be blocked due to the manufacturer's policy. In this case, updating the firmware or using an external Chromecast.

FAQ: Frequently asked questions about broadcasting to Android TV

Is it possible to cast the screen from an iPhone to Android TV?

No, iPhone does not support MiracastBut it is possible. use Google Cast (through applications like YouTube) or Apple AirPlay with adapters, for example AirServer for Android TV.

Why is there no sound when broadcasting via Miracast?

Check that there is no sound Is the sound on the TV turned off or is the mode not activated Video only in the broadcast settings? Also, some applications (for example, Zoom) can block audio transmission via Miracast.

How to broadcast the screen if the TV does not support Miracast?

Use external devices: Chromecast, Amazon Fire TV Stick or HDMI adapter. You can also connect via DLNA (for example, application BubbleUPnP), but the quality will be worse.

Is it possible to broadcast the screen from a phone to Android TV via the mobile data?

No, for Miracast i Google Cast requires a shared network Wi-Fi. An alternative is to create an access point on your phone and connect the TV to it, but this may cause additional lags.

How to reduce the delay when broadcasting games?

For games, it is optimal to use a wired HDMI connectionIf this is not possible:

  • Connect the router to the network 5 GHz.
  • Close background applications on the phone.
  • Reduce the broadcast resolution to 720p.