Modern Xiaomi Mi TVs and Android TVs have become multimedia hubs, but embedded apps can’t always recreate specific content from private sources or local smartphone folders. Users often have to stream video directly from their mobile device to the big screen to enjoy high-quality picture and surround sound. This process, known as screencasting or screen duplication, allows you to turn any movie from the Internet into a full-fledged theater in your home.
There are several proven ways to organize this bundle, and the choice of the specific method depends on your goals and technical capabilities. You can use a wireless connection via Wi-Fi Direct, a wired connection via an HDMI adapter or specialized media applications. It is important to understand that for the stable operation of wireless methods, a high-quality home network is required, since the transmission of video stream in high resolution 4K creates a significant load on the communication channel.
In this guide, we will take a look at all the current connectivity methods, from standard MIUI features to third-party solutions for advanced users. You will learn how to avoid audio delays, why the screen can turn black when you start a video, and what router settings are critical for seamless broadcasting. Follow the instructions to set up the perfect viewing of content.
Wireless connection via built-in broadcast function
The easiest and fastest way to display a smartphone image on a Xiaomi TV is to use an integrated system function, often called Translation, Wireless Monitor or Cast, which is based on Miracast protocols or proprietary MIUI+ developments, allowing you to duplicate the phone screen in real time without installing additional software.
The process of setting up is simplified as much as possible by the interface developers MIUI. You don't have to look for complex IP-Addresses or enter pairing passwords manually, the system will detect available displays within the range of the router. However, it should be borne in mind that with this method, it is the image from the mobile phone screen that is broadcasted, and not just a video stream, which can lead to an increased battery consumption.
To activate the function, perform the following actions:
- 📱 Open the notification curtain on your smartphone and find the “Translation” icon or go to Settings → Connection and sharing → Broadcasting.
- 📺 Make sure your TV is running the Wireless Display app if it doesn’t open automatically when you search.
- 🔗 Click on your TV name in the list of available devices on your phone screen.
- ✅ Accept the connection request that will appear on the TV screen using the remote control.
⚠️ Note: When using wireless streaming via Miracast, the smartphone can get very hot, as the processor actively encodes the video signal. It is recommended not to run heavy games while watching movies to avoid trottling and falling. FPS.
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If the search for the device does not give results, try temporarily disabling the function "Customer isolation" on the router. AP" (AP Isolation, which prevents devices on the same network from seeing each other.
Using Google Chromecast technology for streaming
Most modern Xiaomi TVs run on Android TV, which means built-in support for Google Cast (Chromecast built-in) technology. Unlike simple screen duplication, this method allows you to send a link to the TV to a video stream that the TV box or smart TV plays itself, which frees up the resources of the smartphone and allows you to control the viewing without draining the battery of the mobile device.
The main advantage of this method is the stability of playback: since the TV downloads content directly from the Internet, the picture quality does not depend on the speed of the Wi-Fi module of the phone after initial buffering, it supports video output in a resolution of up to 4K HDR at a frequency of 60 Hz, which provides excellent image quality.
The connection algorithm is as follows:
- 🌐 Make sure your smartphone and TV are connected to the same Wi-Fi network (important: both devices must be in the 5GHz band for better quality).
- ▶️ Open a video app (such as YouTube, Netflix, or Chrome browser) on your phone.
- 📡 Click on the broadcast icon (a rectangle with waves), which is usually in the top corner of the video player.
- 📺 Select your Xiaomi TV from the list and the video will start playing on the big screen. 📊 What is the most common connection method you use?Integrated stream of MIUIGoogle Chromecast HDMINote that not all applications support the Cast protocol. If the broadcast icon does not appear, this means that the application developer has banned the output of content to external displays or has not implemented this feature. In such cases, you have to resort to full screen duplication, described in the previous section, or use specialized browsers. HDMI For users who are interested in maximum signal stability and the absence of any delays, the best solution will be a wired connection. Use of an adapter USB-C to HDMI This allows you to stream the image in its original quality without the compression that wireless protocols use, and this is especially true for viewing high-bitrate videos or for displaying images from devices that do not support wireless standards. It is important to understand that not all Xiaomi smartphones support video output through the charging port. USB Type-C should support the DisplayPort Alt Mode standard. flagship models such as the Mi series and Xiaomi 11/12/13/14, This is usually the case in the Redmi budget series. POCO It's often missing: 🔌 Connect the adapter. USB-C to HDMI in the charging connector of your smartphone. 📺 Connect the adapter and TV with a cable HDMI (preferably 2.0 or higher for support 4K). 📺 Using the TV remote, select the appropriate signal source, for example, HDMI 1 HDMI 2. 📱 Image from the phone should automatically appear on the TV screen. Connection type Image quality Latency Battery Consumption Wi-Fi High (dependent on the network) Average Very High Chromecast Maximum (native) Low HDMI Maximum (no compression) Cable No Charging is ⚠️ Note: When using cheap adapters HDMI This is often due to power shortages. Use adapters with an additional port to connect the charger to ensure stable operation. ☑️ Check before buying an adapter Support DisplayPort Alt Mode Availability of cable HDMI 2.0Power supply for adapter Screen resolution TV Completed: 0 / 4 Broadcasting through media applications (DLNA) If your goal is to play a video file that has already been downloaded to your phone, or to stream from a browser that does not support Cast, technology will come to the rescue. DLNA. Xiaomi TVs have a built-in media player that can receive content from servers running on a smartphone. This uses controller apps such as Xiaomi Mi Remote, BubbleUPnP or a built-in gallery player. This method is convenient because it allows you to control playback (rewinding, pause, subtitles) directly from the phone while the TV acts as a monitor. Unlike mirror display, the phone's interface remains free, and you can continue to use instant messengers or surf the Internet without interrupting the movie on the big screen. DLNA: 📂 Install a media player app with support on your smartphone DLNA (for example, VLC or MX Player). 📺 Open the Media Player app on your TV or make sure that device detection is enabled in your network settings. 📡 In the application on the phone, select the "Translation" or device icon and find your TV. 🎬 Select a video file in your phone’s memory and it will start playing on your TV. There are also specialized applications from Xiaomi, such as Mi Home or Mi Home. MI TV (for older models), which allow you to broadcast photos and videos from the gallery. However, for streaming video from the Internet, it is better to use browsers with built-in Cast to TV function, which can send a link directly to the built-in TV player. Why does DLNA not see video in MKV format?Some embedded TV players do not support certain audio codecs (for example, DTS) or complex containers. In this case, it is better to use a third-party player on the TV itself, installing it from the Google Play Store, for example, VLC for Android TV. Setting up a Wi-Fi network for stable transmission The quality of wireless broadcast depends on the configuration of your home network. The standard range 2.4 Ghz is often caused by overloading of images and gers that are overloaded by neighboring devices. To watch movies in high resolution, it is critical to use the 5GHz band, which provides higher bandwidth. If your router is dual-band, make sure that both your phone and TV are connected to a 5GHz network. Ideally, devices should be in line of sight of the router or through one wall. Using repeaters (signal extensions) can increase coverage, but often reduces the real connection speed, which will negatively affect streaming: 📡 Frequency: strictly 5 GHz (80 MHz channel width). 🔒 Security protocol: WPA2-AES or WPA3 (Older protocols can limit speed). 🚦 QoS (Quality of Service): Enable traffic prioritization for TV and phone in router settings. 📶 Distance: Minimize the number of walls between the device and the router. 💡Wi-Fi stability is more important than the maximum speed of the Internet tariff (LAN), Even with the right setup, users can face technical difficulties, and one of the common problems is de-synchronizing audio and video, when the sound is behind the picture by a few seconds. This usually indicates buffer overload or insufficient power of the phone's processor when encoding the stream, in which case it helps to reduce the quality of the output image in the broadcast settings or reboot the router. Another common situation is black screen when running videos in apps like Netflix or Disney.+. It has to do with protecting content. HDCP. If your connection is not certified (for example, a cheap adapter is used) HDMI Or an unreliable screencasting app, the system blocks the output of protected content, the solution is one: use official apps on the TV or certified connectivity methods, and it is worth mentioning the problem of "disappearance" of the device from the list of available ones. This often happens if the router has enabled the separation of networks for guests or configured different subnets, 192.168.1.x). Sometimes static helps. IP-Addressing for the TV so that the phone always knows where to send the signal. ⚠️ Attention: If the wireless screen function stopped working after the TV firmware update, try resetting the network settings on both devices and re-pairing. MIUI TV Sometimes security protocols are changed. In the broadcast settings on the phone, find the item "Audio output" or "Sound" and switch it from "Phone" to "Telephone" or"Bluetooth/HDMI". In some Xiaomi models, this is hidden in the menu of special features when you are actively connected. Why does the TV not see the phone when searching? Most often the problem lies in the fact that the devices are connected to different frequencies of the router (one to one). 2.4 GHz, another to 5 GHz) or "Guest Network" is enabled. Make sure both devices are on the same network. Also check if the antivirus on the phone is blocking local connections. Can I broadcast the screen to the TV off? No, the TV must be on and on standby (Wireless Monitor or similar) and some models support Wake-on-LAN, but for the first time the TV must be active. Does the streaming affect the speed of the Internet? When using Chromecast (when the TV is downloading the video itself) — no, the phone only controls the process. When you double the screen (Miracast), the phone can consume traffic if you watch online video at the same time, but the transmission of the image to TV is over the local network and does not consume the Internet channel. How to improve the quality of the picture if it is cloudy? Check the output resolution in the phone settings. Sometimes the system automatically reduces the quality to save traffic. Also make sure that the HDMI cable (if used) supports 4K, and the video source is original, not compressed by the messenger.