Modern Xiaomi Mi TVs and Mi Box smart TVs offer huge multimedia capabilities, but sometimes embedded apps aren’t enough and it becomes necessary to stream the contents of the mobile display to the big screen. This can be a desktop presentation, gallery photos or gameplay from a mobile device. The image duplication process, known as screencasting or Miracast, is built into most devices in the ecosystem, but requires the correct configuration of both gadgets.
Users often experience a broadcast button not appearing or the connection is constantly broken, due to differences in data protocols, Android and MIUI TV versions, and router settings. In this article, we will discuss in detail the regular system tools, third-party applications and specific settings that will help ensure stable video streaming without delay.
Before you start setting up, make sure your TV is up to date with the latest firmware.Manufacturers regularly release patches to improve the Wi-Fi Direct module, which is responsible for direct connection between devices without a router. Ignoring this step can result in the TV simply not being visible on the list of available devices on the smartphone.
Preparation of equipment and network
The foundation of successful broadcasting is the right organization of the local network. Both devices — smartphone and TV — must be on the same subnet. This means that they must be connected to the same router. If you have a dual-band router that broadcasts 2.4 GHz and 5 GHz networks, make sure that both gadgets are connected to the same frequency, although modern routers with Smart Connect function usually handle routing automatically.
For high-resolution video, especially in 4K HDR, the 2.4 GHz bandwidth may not be enough, in which case artifacts, delays, or total signal loss occur. It is recommended to use the 5 GHz band to ensure a stable high-bitrate data stream.
- 📶 Check what's on the TV in the Settings menu → The network displays the name of your Wi-Fi network.
- 📱 Make sure your smartphone has “Mobile Data” mode turned off during the broadcast so that the system doesn’t try to shift traffic priority.
- 🔄 Restart your router if the list of devices is not updated for more than 2 minutes.
⚠️ Note: If your router is set up with customer isolation (AP Isolation, devices won't see each other even on the same network, and you need to turn it off in your router settings.
It's also worth considering the distance between devices. Although Wi-Fi is a standard that works tens of meters, it's better to be within line of sight or through a single wall to transmit video without buffering, and having microwave ovens or powerful Bluetooth headsets nearby can interfere with the airwaves.
Broadcasting through the built-in Chromecast feature
Xiaomi Android TVs have built-in support for Google Cast (Chromecast built-in) technology, which is the most stable and energy-efficient way to transfer content, since the TV itself downloads stream from the Internet, and the phone acts only as a remote control.
You don't need to install additional apps on TV to get started. Just open a streaming app on your smartphone (YouTube, Netflix, Google Photos, Chrome browser), and find the rectangle icon with the waves in the corner. Once you select your Mi TV in the list, the content will start playing on the big screen.
In Google Chrome on Android, you can stream a tab or the entire screen. To do this, click on the three-dot menu and select Translate. The system will try to find available devices. If the search takes too long, check if the Google Play Services service on the phone is enabled.
- 🌐 Open the YouTube app on your phone and click the Cast icon.
- 📺 Choose your Xiaomi TV from the list of devices offered.
- ▶️ Launch the video, control will be available directly from the smartphone screen.
It's important to understand the difference between broadcasting a media file and screen duplication. Chromecast is ideal for video because it doesn't load the phone's processor. However, if you want to show an application interface that doesn't support Cast, or show the program running in real time, this method won't work -- you'll need a mirror protocol.
Use the “Miracast” function on Android
To duplicate images completely, when the picture on the TV exactly repeats the actions on the smartphone, the Miracast protocol is used. In the Xiaomi ecosystem, this feature is often called Translation or Wireless Monitor, which allows you to display on TV the game interface, settings menu or any other application.
On a PatchWall Mi TV or a pure Android TV, Miracast can be built in or require a special application to run, usually called Wireless Display, Mi Miracast, or just Broadcast, and run this app on your TV to go into standby mode.
☑️ Miracast's connection algorithm
On Xiaomi smartphones with MIUI or HyperOS shells, convenient access to this feature is in the control center. Swipe down from the top right corner, find the Translation icon (or "Cast"). Once activated, the phone will start searching for available displays. When your TV appears on the list, tap its name.
Miracast image quality is directly dependent on Wi-Fi power and channel load. There are small input lags, so for dynamic shooters this method may not be ideal, but for strategies, video or document demonstrations it is perfect.
⚠️ Attention: When the screen is actively duplicated, the smartphone battery discharges much faster. It is recommended to connect the device to charging during long sessions.
Third-party applications for screen duplication
Staff tools don’t always work correctly with all phone models or Android versions. In such cases, third-party solutions come to the rescue using their own algorithms for compressing and transmitting video streams. One of the most popular and reliable applications is Web Video Caster or Screen Mirroring for Xiaomi TV.
The principle of such programs often consists in installing a paired receiver app on the TV (via the Google Play Store on TV) and a client on the phone, which creates a personal channel of communication, less dependent on the system constraints of Android.
Web Video Caster is particularly effective when you want to stream videos from sites that block the standard Chromecast, which analyzes the stream and sends a direct link to the TV to the video sequence, bypassing the browser’s limitations.
- 📲 Install the selected application on a smartphone from Google Play.
- 📺 Find and install a companion app (Receiver) on a Xiaomi TV.
- 🔗 Run both applications and connect them to each other. QR-code IP-address.
Some users prefer to use remote control applications such as TeamViewer or AnyDesk to install their TV versions, which not only allows you to see the screen, but also in some cases control the phone from the remote, although this requires special permissions on the Android system.
Broadcasting through HDMI-cable
If the wireless connection is unstable or requires maximum image quality without compression, it is worth considering a wired method. for this, the phone must support a technology for video output via a USB port, known as MHL, Slimport or DisplayPort Alt Mode (for USB-C).
You'll need a USB-C to HDMI adapter. One end connects to your smartphone, the other end connects to your TV's HDMI port. Once connected, your TV will identify the new device as an external signal source, and you'll only have to switch the Input on your TV remote to the corresponding HDMI 1 or HDMI 2 port.
This method guarantees zero latency and stable picture even in 4K 60fps formats. However, it is worth remembering that not all Xiaomi budget smartphones support video output via USB. Flagship models (Mi series, Xiaomi Number series) usually have this feature, while Redmi and POCO can be limited only to data transfer and charging.
How to check the support of video output on Xiaomi?
The advantage of wired connectivity is also the ability to charge the phone at the same time as the broadcast, if the adapter has an additional power port, which solves the problem of fast battery discharge when the screen is actively used.
Problem Solving and Diagnosing Errors
Even when set up correctly, there can be failures, and the most common problem is that the TV is not on the list of available devices, in which case the first thing you need to check the firewalls and Wi-Fi security settings, sometimes cleaning the cache of Google Play services and updating the Android System WebView component helps.
If there is an image but no sound, check the media settings in Android. The sound can be displayed on the phone speaker rather than the TV. There is often an audio output switch button in the notification curtain when live streaming.
| Problem. | Possible cause | Decision-making |
|---|---|---|
| TV out of sight | Different Wi-Fi networks | Connect both devices to the same router |
| Image delay | Low speed Wi-Fi | Switch to 5 GHz network |
| Black screen in video | Protection of HDCP | Use the official application (Netflix, etc.) |
| Interruption of communications | Energy conservation | Disable energy savings for broadcast application |
Also worth looking at is the WPA security protocol version. Some older devices may not work properly on WPA3 networks. Try temporarily switching your router to WPA2/WPA3 Mixed compatibility mode.
💡
If the broadcast works in jerks, try to lower the resolution of the smartphone screen in the display settings before connecting to the TV. This will reduce the load on the transmission channel.
In difficult cases, when software methods don’t work, you may need to reset your TV’s network settings. Go to Settings → Device → System → Reset. Remember, this will remove all installed applications and logins, so use this method only as a last resort.
💡
The stability of wireless broadcasting 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 TV itself.