Xiaomi screen broadcast on Mi TV: the complete guide to WiFi

With the modern multimedia capabilities of smart TVs, the living room is a real entertainment center, and wireless content is a key element. Broadcasting a smartphone screen on a large display provides access to high-resolution photos, video games and working presentations. Owners of Xiaomi equipment are in a favorable position, as the brand ecosystem provides for deep integration between mobile devices and Mi TVs.

Using a WiFi connection eliminates the need to search for additional cables or adapters, ensuring a stable video stream. However, despite the stated simplicity, users often face the nuances of configuring Miracast or Chromecast protocols. Understanding the technical features of the interaction of the Android operating system and the PatchWall shell will help avoid typical connection errors.

In this article, we will take a look at all the possible ways to duplicate images, from built-in system functions to specialized software. You will learn how to configure the network to minimize delays and what parameters should be changed to achieve maximum picture clarity.

Preparation of equipment and network infrastructure

Before setting up, make sure that both devices – the smartphone and the TV – are connected to the same wireless network.The router must operate in the 5 GHz band to ensure sufficient bandwidth, especially if you plan to stream video in 4K. Using a guest network or different frequencies (2.4 GHz for one device and 5 GHz for the other) can lead to the fact that the gadgets simply do not “see” each other.

Check the software’s relevance on both devices, as older firmware versions may contain bugs that prevent stable connection. On a Xiaomi Mi TV, the update is usually automatic, but it’s better to double-check for patches in the settings section. On a smartphone, you should also update Google’s system services and wireless drivers.

Importantly, some router models have an AP Isolation feature that prevents devices on the same network from sharing data with each other. If you have enabled all the broadcast features but the TV doesn't appear on the list of available devices, go to the router's settings and turn off this option. Customer isolation is often enabled by default on public networks, but at home it blocks Miracast and Chromecast.

Use of the built-in Translation function in MIUI

Xiaomi and Redmi smartphones are equipped with a native tool for screen duplication, which is based on the Miracast protocol. To activate it, lower the notification curtain and find the “Translation” icon (sometimes hidden in the optional button editing menu). Once turned on, you will start searching for available displays, and in a few seconds your Mi TV should appear in the list.

When you first connect, the TV can request permission to display content from an unfamiliar device. The TV screen will pop up with a code or confirmation button that you need to select from the remote. Once you successfully pair the image from the phone, it will instantly appear on the large screen with minimal latency.

It is worth considering that when you live stream, the screen of the smartphone may not go out, which leads to increased battery consumption. Some Xiaomi models allow you to broadcast an image even when the phone display is turned off, but this feature depends on the version of MIUI and the specific application you use.

Google Chromecast Technology for Multimedia

Most Xiaomi TVs run on Android TV or have built-in support for Google Cast technology. This method differs from Miracast in that it broadcasts not a mirror image of the screen, but specific content from applications. To work, just click the rectangle icon with WiFi waves inside the YouTube, Netflix, Google Photos or Chrome browser.

The advantage of the Chromecast is that the phone is only a remote control, and the video stream is downloaded by the TV directly from the Internet, which significantly reduces the load on the smartphone processor and allows you to use the gadget for other tasks while watching a movie, and the image quality is often higher, since the TV decodes the stream itself.

If the built-in Chromecast doesn't work, make sure that the Google Home app is installed and updated on your smartphone.This service is responsible for detecting cast devices on the local network. In the application settings, check if you allow the use of the local network for data transfer.

Third-party applications for extended functionality

Embedded tools don’t always provide perfect compatibility, especially if you plan to stream the screen from non-gaming apps or specific video formats. In such cases, third-party solutions like Web Video Caster or Xiaomi’s TV Assistant come to the rescue. These programs often have their own codecs and are better at converting stream on the fly.

The TV Assistant app is designed specifically for the Xiaomi ecosystem and allows not only to duplicate the screen, but also to control the TV file system, transferring photos and videos directly to the TV memory. To work, you need to install the client part on both the phone and the TV from the GetApps or Google Play app store.

Using third-party software may require advanced permissions such as Overlay on Other Windows or Screen Recording. Without these rights, the app will not be able to capture the image and send it to an external display.

Solving problems with delays and image quality

One of the most common problems with wireless broadcasting is the desynchronization of audio and video sequences or the appearance of compression artifacts, which is often due to congestion of the WiFi channel with neighboring routers. For diagnostics, you can use WiFi analyzer applications to find a free channel and switch the router to it through the web interface.

⚠️ Warning: If you see strong jerks, try turning off the router's "Smart Connect" mode, which combines 2.4 and 5 GHz networks under the same name. Forced frequency sharing and connecting both devices to 5 GHz often solves the problem of instability.

It's also worth checking if background tasks on a smartphone that consume traffic, such as downloading updates or syncing cloud storage, are running.The channel's bandwidth is critical for high-resolution video transmission, and any extraneous data streams can cause buffering.

In some cases, reducing the quality of the output image in the settings of the broadcast application itself helps. If you are streaming a game, try to lower the rendering resolution in the game graphics settings to reduce the amount of data transmitted.

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For fast-paced games (shooters, racing), wireless broadcasting will always have an input lag. For comfortable gaming, it is recommended to use a wired connection via a USB-to-HDMI adapter or play directly on the TV using the phone as a gamepad.

Broadcasting browser content and documents

Office work or web page demos require a special approach, as a standard screen mirror may not scale properly on a TV. Google Chrome browser has a built-in “Translate” feature that allows you to send a specific tab to the TV. This is more convenient than duplicating the entire screen of a smartphone, since the formatting of the page adapts to TV.

To work with PDF documents or PowerPoint presentations, it is convenient to use DLNA-enabled file managers built into the MIUI shell or installed separately. Select a file in the manager, click the Send to Device button and select your Mi TV. The TV will open the built-in player and display the contents of the file.

If the text on your TV screen looks blurry, check the zoom settings in the Developer section on your smartphone. Sometimes changing the density of the DPI (dots per inch) helps to achieve a clearer font when you display it to the big screen, although this can affect the display of the interface of the phone itself.

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For static content (photos, documents, web pages), it is preferable to use DLNA or Chromecast, as they provide better picture quality without compression artifacts characteristic of live screen mirroring.

FAQ: Frequently Asked Questions