In the modern digital world, the smartphone has become a universal control panel and entertainment storage device. However, the small display of the device does not always allow you to fully enjoy watching your favorite TV series, family photos or dynamic gameplay. It is at such moments that the need arises to duplicate the image on a large screen, turning an ordinary living room into a full-fledged media center.
Technology screen broadcast (Screen Mirroring) on Android devices is implemented at the system level, but the methods of activating it may differ radically depending on the manufacturer of your TV and the version of the operating system. Users often encounter confusion in terms: someone is looking for the “Broadcast” function, someone is looking for “Smart View”, and someone is trying to find the standard protocol Miracast. Understanding the differences between these methods is the first step to a successful connection without delays and loss of picture quality.
In this article we will look in detail at all the possible ways to transfer your phone screen to an Android TV, from wireless technologies to a physical connection via cable. We will look at the nuances of working with various brands, such as Samsung, Xiaomi i Sony, and will also pay attention to solving typical problems when devices simply “do not see” each other on a common network.
Preparation of devices and basic requirements
Before you start setting up, you need to make sure that your equipment technically ready for interaction. A fundamental requirement for most wireless methods is that both devices - the smartphone and the TV - are on the same local network Wi-Fi. If your router distributes networks at 2.4 GHz and 5 GHz frequencies separately, it is highly advisable to connect both gadgets to the same frequency, preferably to 5 GHzas it provides higher throughput for transmitting video streams.
Check that the software on both is up to date devices. Outdated Wi-Fi module drivers or system bugs in older versions of Android may block the device detection function. Go to Settings your smartphone, find the section System update and install the available packages. A similar procedure should be carried out for Smart TV by going to the TV settings menu and checking the firmware version.
⚠️ Attention: Some older TV models released before 2015 may not support modern video transmission protocols without the use of external adapters. Carefully study the specifications of your model in the official user manual.
It is also worth turning off the power saving mode on your phone during setup. Aggressive battery optimization can forcefully disable the Wi-Fi module or limit the background activity of system services responsible for searching for media devices. This is a common reason why the phone sees the network, but does not find the TV in the list of available ones for connection.
☑️ Ready to connect
Using the built-in “Broadcast” function in Android
Starting with version Android 5.0, the system has implemented native support for the standard Miracast. This technology allows you to stream video and audio directly from device to device using Wi-Fi Direct, without necessarily requiring a router to route traffic, although having a shared network makes the discovery process easier.
To activate this feature, open the Quick Settings panel by swiping down from the top of the screen twice. Find the icon with the name Broadcast, Smart View (on Samsung), Wireless monitor (on Xiaomi) or Proximity. Clicking on it will start scanning the air. If your TV is in connection standby mode, it will appear in the list.
In some manufacturers' shells, the path to this setting may be hidden deeper. For example, on pure Android you need to go to Settings → Connected devices → Connection settings → Broadcast. After selecting the TV from the list, a connection confirmation request will appear on its screen, which must be accepted using the remote control.
If the “Broadcast” function is not active (gray), try turning on geolocation (GPS). In some versions of Android, searching for devices on the local network is tied to location access permission.
It is worth noting that the picture quality when using the built-in broadcast may vary. When watching fast-paced content, such as racing or shooter games, you may notice a slight delay (lag) between the action on your phone and what appears on your TV screen. This is normal for Miracast technology, which is not designed for professional gaming with minimal ping.
Broadcast through the Google Home application
If the built-in tools of your smartphone are unstable or the TV is not displayed in the list, the official application Google Homecomes to the rescue. This is a universal tool in the Google ecosystem that allows you to control your smart home and, more importantly for us, broadcast content to devices with support Chromecast built-in.
The setup process is intuitive. Download the application from Google Play Market and make sure that you are logged in with the same Google account as on other devices (if you have them). Open the app and it will automatically scan the network. Find the icon of your TV in the list of devices and click on it.
At the bottom of the device control menu that opens you will see a button Broadcast screen (Cast my screen). By clicking on it, the system will warn you that all notifications and actions will be displayed on the screen. Confirm the action by pressing Start broadcast. The image from the phone will instantly appear on the big screen.
| Feature | Miracast (Built-in) | Google Home (Chromecast) | HDMI Cable |
|---|---|---|---|
| Connection type | Wireless (Wi-Fi Direct) | Wireless (Via router) | Wired |
| Image delay | Average (noticeable in games) | Low (depending on the network) | None |
| Battery consumption | High | Medium | Charging running |
| Stability | Depends on drivers | High | Maximum |
The advantage of the method via Google Home is the ability to broadcast content even when you minimize the application or lock the screen (depending on the type of content). However, if you are broadcasting the entire screen (Screen Mirroring), the phone must remain active.
Why is the broadcast interrupted?
A common reason for connection interruptions when using Google Home is a change in the device’s IP address or temporary loss of packets in the Wi-Fi network. Try rebooting the router if the problem occurs regularly.
Branded solutions from television manufacturers
Large TV manufacturers often develop their own ecosystems that are more stable than universal protocols. If you have a TV brand Samsung, LG or Sony, it makes sense to use their proprietary utilities available in the application store.
For owners of Samsung equipment, the optimal solution is the application SmartThings. It not only allows you to control the TV like a remote control, but also provides high-quality screen broadcasting. After installing the application and pairing devices, the “Mirroring” function is activated in a couple of clicks through the control menu.
- 📱 Samsung SmartThings: Ideal integration for Galaxy phones, supports high-definition audio and video transmission.
- 📺 LG TV Plus: Allows you not only to duplicate the screen, but also to use your smartphone as a touchpad to control the cursor on the TV.
- 🎮 Sony Video & TV SideView: A multifunctional application that provides a stable connection and access to the phone's media library directly from the TV.
Using proprietary software often solves the problem with codecs. Android's built-in streaming may not support certain video compression formats, while the native TV app has all the necessary decoders out of the box. This is especially true when watching videos in resolution 4K.
⚠️ Attention: The interfaces of SmartThings, LG ThinQ and other applications may change with updates. If you don’t find the broadcast button in the usual place, use the search inside the application for “Screen” or “Broadcast”.
Wired connection via USB-C and HDMI
When a wireless connection is impossible due to a poor signal or maximum picture quality without compression is required, a cable connection comes to the rescue. However, there is an important technical nuance here: not every port USB-C on a smartphone supports video output.
To transmit images, you need a port that supports the technology MHL (Mobile High-Definition Link) or, more modernly, the standard DisplayPort Alt Mode. Flagship models from Samsung (S and Note series), Huawei (P and Mate series) and some Motorola models support this feature. Budget smartphones, as a rule, do not have this feature, and connecting a cable will not work.
You will need a special adapter USB-C to HDMI. Connect the adapter to your phone, and the HDMI cable to the adapter and an available port on your TV. Switch the signal source on TV (button Source or Input) to the corresponding connector HDMI 1, HDMI 2 and so on.
Procedure:1. Connect the adapter to the phone.
2. Connect the HDMI cable to the adapter and TV.
3. Select the HDMI signal source on the TV remote control.
4. The image should appear automatically.
The main advantage of this method is that the phone simultaneously charges (if the adapter has a charging port) and transmits a signal. Input lag is minimal, making this the only acceptable method for connecting a smartphone to a TV as a game console.
A cable connection is the only way to guarantee the absence of delays and compression artifacts, but it requires a specific USB-C port with video output support.
Problem solving and troubleshooting
Even if all instructions are followed, users may encounter a situation where the phone does not see the TV or the connection is constantly disconnected. Most often, the problem lies in the firewall settings or Wi-Fi client isolation.
Check your router settings. The function AP Isolation (Access Point Isolation) prevents devices connected to Wi-Fi from seeing each other. It's designed for security on public networks, but at home it blocks Miracast and Chromecast. Disable this option in the admin panel of the router.
- 🔄 Reboot: Turning off and turning on the router, phone and TV solves 80% of problems with device detection.
- 🔥 Antiviruses: Third-party firewalls on a smartphone can block outgoing connections for broadcasting. Try temporarily disabling protection.
- 📶 Range frequencies: Make sure that both devices are not located on different frequencies (one at 2.4 GHz, the other at 5 GHz), if the router does not unite them into one network with a common name (SSID).
If there is an image, but no sound, check the audio output settings in the phone’s quick settings menu when the broadcast is active. Sometimes the sound continues to play through the smartphone speaker, and you need to manually switch the output to Bluetooth or Wi-Fi audio.
Why is the broadcast slow and the picture “scatters”?
This is a sign of low Wi-Fi channel bandwidth. Try moving closer to the router, turning off other devices that consume traffic (torrents, downloads), or switching to a wired connection. Also, a decrease in quality may be caused by overheating of the phone's processor.
Is it possible to cast the screen if the TV is not Smart?
Yes, for this you will need to purchase an external set-top box, for example, Google Chromecast, Xiaomi Mi TV Stick or any TV box on Android. They connect to the HDMI port of a regular TV and add Smart TV functions to it, allowing you to receive broadcasts from your phone.
Does screen broadcasting affect the quality of video recording?
With active screen duplication, system performance drops. If you try to record video from your phone camera while broadcast on TV, the recording may be interrupted or have low frame quality due to lack of processor resources.
Is it safe to stream banking applications to TV?
Technically it is possible, but it is highly not recommended. When broadcasting the entire screen (Screen Mirroring), everything that happens on the phone display is visible on TV. It is better to use the Cast function inside specific applications (YouTube, Netflix), which transmits only the video stream, and not the entire system interface.
How to turn off the broadcast?
On your phone, open the notification panel and click the “Turn off broadcast” or “Stop” button. You can also simply turn off the phone screen or switch to another application if you are using Cast mode rather than full mirroring.