Modern Xiaomi smartphones have powerful screens, but to view content in high resolution on a large screen often requires display. Multimedia broadcast or desktop duplication allows you to turn a regular TV into a full-fledged media center. Owners of devices based on MIUI or HyperOS can use several built-in and third-party methods to accomplish this task.
The synchronization process depends on the type of operating system installed on the TV and the availability of wireless protocols. The most common scenario is a bundle of a smartphone with an Android TV, but there are universal solutions for any display. Understanding the technical features of the Miracast and DLNA protocols will help to avoid delays and dissynchronization of sound.
In this article, we will take a detailed look at the algorithms for different use cases, learn how to set up a connection in a few minutes, what hidden features are available in the developer menu, and how to ensure stable data transfer without buying additional hardware.
Wireless broadcasting through built-in functionality
The fastest way to display an image is to use the standard Translation feature, which is based on Miracast technology, which allows you to stream video directly, without having to connect to the Internet, if both devices are on the same local Wi-Fi network. MIUI This feature is often integrated into the control panel or settings menu.
To start the process, you need to lower the notification curtain and find the icon “Translation” or “Cast.” If the icon is missing, you can add it through the Quick Settings editing menu. Once activated, the smartphone will start searching for available signal receivers. On the screen of a TV with Android TV support, you may need to confirm the connection, which will appear as a pop-up.
⚠️ Note: When using high-resolution wireless broadcasting (4K) This method may not be optimal for gaming because of input lags.
The quality of the image is directly dependent on the power of the router signal and the distance between the devices. If you see artifacts or interrupts, try to bring the smartphone closer to the access point. The Wi-Fi Direct protocol used in conjunction with Miracast creates a direct connection, bypassing the router, which sometimes increases stability.
Using Google Chromecast technology
Android TV owners often have built-in support for Chromecast built-in technology, which allows you to stream content from specific applications (YouTube, Netflix, Kinopoisk) directly to the TV, using the phone only as a remote control. Unlike screen duplication, video streams directly from the server to the TV, which saves battery power of the smartphone.
To work, both devices must be connected to the same Wi-Fi network. Open the supported app on your Xiaomi phone and click on the broadcast icon (a rectangle with waves). In the list of available devices, select your TV. It is important that the version of the Google Home app is up to date, as it manages detection protocols.
The advantage of this approach is the ability to multitasking: you can fold the video application and respond to messages or browsing without interrupting the playback on the large screen. However, if the application does not support the casts protocol, you will not be able to broadcast the contents of the screen completely - this will require the duplication mode described above.
- 📺 The stream is carried out directly from the cloud, bypassing the phone’s processor.
- 🔋 Smartphone energy consumption is minimal compared to full screen duplication.
- 🌐 It requires a stable connection to the Internet, not just a local network.
- 📱 Playback control (pause, volume) is available from the lock screen.
💡
If the TV is not visible in the Chromecast device list, make sure the router has disabled the “AP Isolation” feature, which prevents devices from seeing each other on the network.
Wired connection via HDMI and adapters
When wireless methods are not available or maximum image quality is required without compression, the only option is cable connection. To implement this scheme on Xiaomi smartphones, a USB Type-C port with video output support (DisplayPort Alt Mode) is required. Not all models in the budget segment support video transmission via USB, so this moment requires a preliminary check of the specifications.
You will need a special adapter (adapter) from USB-C to HDMI. After connecting the cable to the TV and phone, you need to switch the source of the signal on the TV remote to the appropriate port HDMI 1 or HDMI 2. Android system automatically detects the external device and displays the image. In some cases, you may need to allow access in the window that appears on the smartphone screen.
Settings → About Phone → MIUI Version (7 times) → Advanced Settings → For developers → Forced activation of MSTTurning MST (Multi-Stream Transport) mode on the developer menu sometimes helps if the adapter is not automatically detected by the system, which makes the phone try to transmit a video signal even if you shake hands with the adapter incorrectly.
☑️ Checking readiness for wired connection
Third-party applications for screen duplication
If standard tools don’t work or the functionality isn’t enough, Google Play apps come to the rescue, with Web Video Caster or AirScreen leading the way, allowing you to stream content not just from your phone but also from browsers, supporting a wide range of formats and codecs that a native TV player may not “understand.”
The principle of operation of such programs is often to install the server part on the TV (via the Android app store). TV) And the client part on the Xiaomi phone, after pairing up. QR-code IP-You can stream local video files, photo galleries and even documents.
⚠️ Warning: Free versions of popular broadcast apps often contain intrusive ads that may overlap the management interface.
And the DLNA apps that are particularly noteworthy are the ones that allow you to organize a media server on your phone, make it available to your TV, and they're ideal for viewing heavy files when wireless screening is causing jerks, and the TV sees the phone as a network storage, and reads the data directly.
Comparison of Connection Methods and Their Characteristics
The best way to do this depends on your goals: whether you want to show a presentation to your colleagues, watch a high-bit movie, or play a mobile game. Each method has its own technical limitations and advantages. Below is a table that helps you decide on the technology for your specific situation.
| Method | Delay (Latency) | Image quality | Battery consumption |
|---|---|---|---|
| Miracast (Translation) | Medium (100-300 ms) | High (up to 1080p/4K) | High-pitched |
| Chromecast | Low (management) | Maximum (flow from the server) | Low. |
| HDMI Cable | Absent. | No loss (Lossless) | Charging the device |
| DLNA / Media server | Low. | Original file | Medium. |
As you can see from the table, wired connectivity remains the benchmark for stability, whereas wireless methods benefit in convenience. To view dynamic scenes in movies, a 200 ms difference may not be noticeable, but in shooters it will become critical. Therefore, for games, it is recommended to use only wired connection or streaming from a PC, not live streaming of the phone screen.
Why does the sound disappear during broadcasting?
Solving Connection Problems
Despite the ease of setting up, users often face a situation where the TV can’t see the phone. The first thing to do is make sure that both devices are on the same subnet. Dual-band routers can split devices into 2.4 GHz and 5 GHz frequencies, which sometimes prevents them from being detected through discovery protocols.
The second common reason is the firewall or antivirus settings on the router that block ports used for Miracast or DLNA. Try temporarily disabling packet filtering or creating a guest network without restrictions to test the hypothesis.
- 🔄 Update the TV firmware through the Settings menu → On TV. → Updating the system.
- 📶 Make sure your phone has geolocation and Bluetooth enabled (used to find devices).
- 🛡️ Check the permissions for the Translation app in the privacy settings MIUI.
- 🔌 When using an adapter HDMI Make sure you have enough food (plug in). USB adapter).
If the problem persists, it makes sense to reset the network settings on your smartphone.This action will remove stored Wi-Fi passwords, but often eliminates the software conflicts of the protocol stack. In extreme cases, for older TVs without Smart features, you can purchase an external console Android TV Box, which is guaranteed to make friends with the Xiaomi ecosystem.
💡
The stability of the connection is 90% dependent on the quality of the Wi-Fi router and the absence of interference in the air, not on the power of the smartphone.