Modern Xiaomi smartphones have powerful screens and powerful processors, but viewing content on a large screen often requires displaying images on a TV. Wireless display technology allows you to broadcast a picture in high resolution without using unnecessary cables, turning the gadget into a media remote control. Users often wonder how quickly and stably to set up a connection between the device and TV to enjoy movies or presentations.
In this article, we will take a look at all the connectivity options available, from built-in system functions to third-party applications, learn about the nuances of Miracast and Google Cast, and get answers to questions about how to fix typical synchronization errors.
To get started, make sure both devices are on the same LAN, which is a basic requirement for most wireless data methods. If the router supports dual-band, it's best to use a 5GHz network to maximize channel bandwidth.
Technology of wireless image transmission
Before you start setting up, you need to understand the difference between the main broadcast protocols. Xiaomi smartphones most often use the Miracast standard, which is built into the MIUI or HyperOS shell called Translation. This protocol creates a direct Wi-Fi Direct connection between the phone and the TV, bypassing the router, which reduces the load on the network.
Alternatively, Chromecast built-in or Google Cast, which allows you to stream content from specific applications such as YouTube or Netflix, in which case the phone acts only as a remote control, and the video stream is downloaded by the TV directly from the Internet, which frees up the resources of the smartphone and saves battery life.
Also worth mentioning is the DLNA protocol, which allows you to transfer media files (photos, videos, music) to compatible devices, but it is not suitable for full screen mirroring, and the choice of method depends on the purpose of use and technical support from your TV.
- 📡 Miracast – full screen duplication without delay, perfect for games and presentations.
- 🎥 Chromecast – streaming content from apps with control from the phone.
- 📁 DLNA — Transfer only media files from the device memory.
- 🏠 Mi Home – Xiaomi Smart TV Management through a Single Ecosystem.
⚠️ Note: When using Miracast protocol in Wi-Fi Direct mode, the Internet speed on a connected smartphone may temporarily decrease as the Wi-Fi module switches to a direct connection to the TV.
Preparing devices for synchronization
Successful connectivity depends on proper pre-preparedness, and first of all, make sure that both Xiaomi smartphone and TV are connected to the same Wi-Fi network. If your router is distributing at 2.4 GHz and 5 GHz with different names (SSID), make sure that both devices “see” each other within the same subnet.
On the TV, you should activate the wireless signal reception function. In modern models of Samsung, LG or Sony, this option can be called differently: Screen Share, Wireless Display, Miracast or simply Translation. On Xiaomi TVs with Android TV or PatchWall, this feature is built into the system and often does not require a separate start, being in the background.
It is also important to make sure that the software of both devices is updated to the current version. In the phone settings, go to About Phone and check for system updates. For a TV, the update procedure can usually be found in the Settings menu → About TV → System Update.
☑️ Checklist of preparation for connection
If you're using a guest Wi-Fi network or a corporate network with client isolation, wireless broadcasting won't work, and in such cases, the only solution is to create an access point or use alternative methods of connection.
Configure the built-in Translation function in MIUI
The MIUI shell, which is installed on Xiaomi, Redmi and Poco smartphones, has a built-in image output tool. To activate it, open the curtain control center or go to Settings → Connection and Sharing → Broadcast. The system will automatically start searching for available devices within range.
Once you find your TV on the list, click on the name of the TV, you may see a request for confirmation of connection, which you need to receive using the remote control, and after successful pairing, the image from the smartphone screen will appear on the large display.
To improve the user experience, you can add additional settings to the stream menu, hide system notifications so they don’t overlap the content, or disable screen display when you lock your phone to save energy, and switch between display modes: stretch to the full screen or save proportions.
Hidden functions of the broadcast menu
If the search for devices is not working, try restarting the Wi-Fi module on your phone or using the Scan button in the broadcast menu, sometimes helping to temporarily shut down the mobile Internet to force the system to use the Wi-Fi channel for data transfer.
Using the Google Home app for Chromecast
For Chromecast-enabled TVs, the most stable way to do so is to use the official Google Home app, especially if the built-in Translation function is unstable or doesn’t see TV.
Once installed, launch the app and log in to your Google account. The program will automatically detect Chromecast devices on your network. Select your TV from the device list. In the control menu that opens, click Cast my screen.
The system will request permission to record the screen content and transmit sound, and after confirmation, image mirroring will begin, the advantage of this method is high stability and support for a wide range of multimedia content optimized for the Google ecosystem.
| Parameter | Miracast (Translation) | Google Home (Chromecast) | DLNA |
|---|---|---|---|
| Type of connection | Wi-Fi Direct / Local Network | Local area network + Internet | Local area network |
| Delay (Latency) | Low. | Medium | High (files only) |
| Working in the background | The screen must be active. | Possible (for video) | Possible. |
| Compatibility | Most Smart TVs | Android TV, Chromecast | Any Smart TV |
⚠️ Note: When streaming through Google Home, the battery is consumed faster, since the phone screen must remain on, and the processor actively encodes the video stream.
Broadcasting through third-party applications
When standard methods don't work or there's not enough functionality, third-party solutions come to the rescue. One of the most popular applications is Web Video Caster or LocalCast, which allows you to not only broadcast the screen, but also send video files stored in the phone's memory to the TV, even in formats that are not natively supported by the TV.
The setup process is simple: install the app on a Xiaomi smartphone and, if required, a companion app on a TV (although often a built-in DLNA/Chromecast receiver is enough). Once you run, select a file or video link and click the device connection button.
The feature of these applications is the ability to control playback: rewind, pause, audio track and subtitles are selected from the phone, which turns the smartphone into a full-fledged remote for home theater.
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If the video is played in jerks, try to reduce the stream quality or bitrate in the player application settings, and also make sure that there are no thick walls between the router and the TV that weaken the signal.
Some TV makers, such as Samsung (Smart View) or LG (TV Plus), have their own smartphone apps, and they often provide better compatibility and additional functionality, such as file transfer or mouse control.
Addressing problems and delays
The most common problem with wireless connectivity is the desynchronization of sound and image or the presence of lags. This is often due to congestion of the Wi-Fi channel or insufficient power of the router. If you see a delay, try to approach closer to the router or eliminate physical obstacles.
Another common mistake is "Black Screen with Sound." This occurs when content is protected by HDCP (e.g., movies from paid subscriptions), in which case the system blocks the output of the image to external devices for copyright protection. The solution is to use the "Translation" function inside the player application itself (the icon of the square with waves), rather than full mirroring of the screen.
If your phone can't see the TV, check the firewall settings on your router. Sometimes antivirus software or network security settings block the ports needed to detect devices using SSDP or mDNS protocols.
- 🔄 Reboot your router and both devices – it solves 80% of connection problems.
- 📶 Switch to 5 GHz network to reduce interference from neighbouring networks.
- 🛡️ Turn it off. VPN on your smartphone as it changes the traffic route.
- 📱 Update your YouTube or Netflix app to the latest version.
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The stability of a wireless display is 90% dependent on the quality of the Wi-Fi signal and the absence of interference in the air, not on the power of the smartphone.