Modern multimedia systems allow you to stream content from mobile devices to large screens, but users often face a misconception about the capabilities of wireless interfaces. Many owners of Xiaomi and Mi Box equipment try to use the Bluetooth protocol to transmit video streams, unaware of the technical limitations of this standard. It is important to note at once that direct video or duplicate the screen of a tablet on a TV exclusively via Bluetooth is technically impossible due to the low bandwidth of the channel.
However, that doesn’t mean you can’t connect your devices. The Android TV ecosystem on which Xiaomi TVs are based offers more advanced solutions like Miracast, Chromecast, and DLNA, which often use Bluetooth only for initial detection or peripheral connectivity. In this article, we’ll take a look at how to set up a connection correctly, what technologies actually work for image transfer, and how to avoid typical errors when syncing gadgets.
Understanding the differences between data protocols will help you choose the best method for your tasks, whether it's viewing photos, running videos from online cinemas or dubbing a desktop for presentations, there is a unique tool for each scenario, and we'll look at all the options available for integrating a tablet into your home media system.
Bluetooth Technical Limitations for Video Transmission
Bluetooth was designed primarily to transfer audio, text files and connect peripherals such as keyboards or mice. The standard’s bandwidth, even in the latest versions (5.0 and higher), is about 2-3 Mbps for data transfer, which is catastrophically low for video streaming. For comparison, even low-quality video requires speeds of 5 Mbps, and Full HD content requires speeds of 15 Mbps and higher.
That is why trying to find the feature "Screen Translation via Bluetooth" in the settings of the Xiaomi TV is doomed to failure. Android TV operating system can use a Bluetooth module to pair the remote or headphones, but not to receive a video signal. Bluetooth does not support real-time video streaming with sufficient quality.
However, the role of this wireless interface in the setup process cannot be ignored, and it is often through Bluetooth that devices first shake hands before switching to a faster Wi-Fi channel for data transfer. This speeds up the search process and simplifies authorization, saving the user from manual input. IP-address.
There is a common myth that there are special applications that can circumvent this limitation, which is that they either use Wi-Fi Direct or simply stream audio to create the illusion of video performance. It is important to distinguish between feature marketing names and actual technical standards so as not to waste time on non-working methods.
- 📉 Low data transfer speeds do not allow live video broadcasting.
- 🎧 The main purpose is the transmission of audio and the connection of accessories, not video content.
- 🔄 The protocol can only be used for initial pairing before switching to Wi-Fi.
- 🚫 Screen Mirroring via Bluetooth is technically impossible.
So if you want to bring the image to the big screen, you need to switch to technologies that work over the Wi-Fi network, and that will provide the necessary speed and stability of the connection.
Alternative technologies: Miracast and Chromecast
To successfully stream the tablet screen content to a Xiaomi TV, you should use Miracast technology or built-in support for Google Cast. These standards allow you to stream high-definition video stream over a local Wi-Fi network, providing smooth images and high-quality sound. Unlike Bluetooth, here the delays are minimal and invisible when watching movies.
Miracast technology is often implemented as a Wireless Monitor or Translation feature in Android tablet settings. It creates a direct connection between devices (Wi-Fi Direct), which allows you to broadcast an image even without Internet access, as long as both devices support this standard. Xiaomi TVs usually have built-in support for this protocol.
On the other hand, the Google Chromecast ecosystem (built into Android TV) works a little differently, where the tablet acts as a remote control, sending a command to the TV to play content on a link, or broadcasting a browser tab, a method that is often more stable and energy efficient for a mobile device.
To activate these functions, you need to make sure that both devices are on the same network, which is critical because the router is the intermediary that routes data packets between the tablet and the TV, and if you use a guest network or client isolation on the router, you can't establish a connection.
Preparation of devices for connection
Before you start setting up, you need to perform a number of preparatory steps: Make sure that your tablet and Xiaomi TV are connected to the same Wi-Fi network. Often users make the mistake of connecting one device to the 2.4 GHz band and the other to the 5 GHz with a different network name (SSID), which can prevent detection.
Also worth checking out for software updates. From the TV menu, go to Settings → About System → System Update and make sure you have an up-to-date version of Android TV installed. The tablet also recommends updating Google Play system services and apps you plan to stream through.
Turn on the tablet geolocation. It seems strange, but in modern versions of Android scanning available devices for broadcast (especially through Chromecast) requires the enabled GPS module for the correct operation of the detection protocols on the local network.
☑️ Checking before connection
If you plan to use a Bluetooth headset to output sound while watching, pair it with your TV in advance, which will avoid conflicts of audio streams when you start streaming the video.
Step-by-step: Screen broadcast (Miracast)
The most versatile way to duplicate an image is to use a built-in broadcast function. On Xiaomi TVs with PatchWall shell or pure Android TV, this process may be slightly different, but the overall algorithm is the same. First, on the remote control, click the button with the image of a square with arrows or go to the app menu.
Find an app called Wireless Monitor, Miracast, or Translation. Run it. The TV will display a message waiting for a connection, often with the device name, such as Android-XX or Xiaomi TV.
Now, take a tablet. Put down the notification curtain and look for the Translation, Smart View (on Samsung), Project, or Wireless Monitor button. If that button isn't available quickly, go to Settings → Connected devices → Connected TV. After scanning, your TV should appear on the list.
⚠️ Warning: When you first connect to your TV, you may have a request for permission to access your TV, so you need to go to the TV and confirm the connection with the remote control, otherwise the tablet will not be able to start transmitting data.
Once confirmed, the tablet screen will be completely copied to the TV, so you can open photos, videos, browsers or games, and note that in horizontal mode, the image will occupy the entire screen, and in vertical mode, it will be displayed with black fields on the sides.
Use of Google Home and Chromecast
A more advanced method that often yields better picture quality and less latency is to use the Google Home app. If it's not installed, download it from the Play Market. This method is especially effective if the built-in Miracast feature on the tablet is unstable or missing.
Launch the Google Home app and log in to the same Google account as you do on your TV (or just find the device online). From the list of available devices, select your Xiaomi TV. From the control menu that opens, click the "Cast my screen" button.
The system will alert you that the sound and image will be broadcast to the TV. Press Start. If you want to stream content from a particular app, such as YouTube or Netflix, it is more convenient to use the broadcast button inside the player app itself, choosing the target device TV.
- 📱 Open the Google Home app on your tablet.
- 📺 Select your Xiaomi TV from the list of devices.
- ▶️ Click "Translate screen" and confirm the action.
- 🎬 For YouTube videos, use the Cast button inside the player.
The advantage of this method is that the TV itself decodes the video stream, unloading the tablet processor, which is especially important for watching video in 4K, where the direct Miracast method can give jerks.
What if Google Home doesn’t see TV?
Multimedia Transfers via DLNA
If your goal is not to duplicate the screen, but simply to play a video or music file stored in the tablet memory, it is better to use the DLNA protocol. This method does not create a mirror copy of the screen, but transfers the media file directly to the decoder of the TV, which ensures maximum quality.
To do this, you can run the Media Player or Gallery app on Xiaomi TV. In some models, it is easy to select the Media signal source on the remote. You can use a DLNA-enabled file manager or a VLC for Android app on the tablet.
In the VLC app, go to the Overview tab, select Local Network, and your TV should be displayed there, so when you log in, you can select a folder on your tablet and run a video that will play on the big screen.
| Parameter | Miracast | Chromecast | DLNA |
|---|---|---|---|
| Type of transmission | Screen mirroring | Stream/screen broadcasting | File transfer |
| Dependence on the tablet screen | High (screen on fire) | Medium (can be folded) | Low (can be turned off) |
| Video quality | Depends on the Wi-Fi signal. | High (adaptive) | Original (no loss) |
| Management | Tablet. | Tablet and remote. | From the TV remote |
The choice of method depends on your tasks: Miracast is suitable for presentations and games, Chromecast is suitable for online cinemas, and DLNA is suitable for viewing personal video archives.
Solution and diagnosis
Despite the ease of setting up, users often face problems, the most common of which is that the TV is not visible on the list of available devices; 90% of the time, this is solved by restarting the router; network detection protocols (mDNS) sometimes stick, and a simple restart of network equipment clears the cache.
Another problem is the desynchronization of sound and image or lag (lag). This is typical of the Miracast method with a weak Wi-Fi signal. Try to get closer to the router or TV. If you use the 2.4 GHz band, switching to 5 GHz can dramatically improve the situation, since it is less crowded with neighboring networks.
⚠️ Note: If the image twitches when streaming through Miracast, try to lower the screen resolution or refresh rate in the developer settings on the tablet, although this is an extreme measure.
It is also worth mentioning the problem with DRM-Some streaming services (e.g., Netflix in high definition or paid subscriptions) may block screen streaming through Miracast due to copy protection. In such cases, only the Cast button inside the application (Chromecast) works, since it does not transmit a screen image, but a link to the stream.
💡
If the sound is coming through the speaker of the tablet, not the TV, check the Bluetooth settings on the tablet. Sometimes the device connects to the TV for video, but the audio stays on the mobile. Switch the output in the notification curtain to the TV device.
In difficult cases, resetting network settings on a tablet helps, and it won’t delete your data, but will return the Wi-Fi and Bluetooth settings to factory values, which often eliminates software driver conflicts.
💡
The stability of the connection depends on the quality of the Wi-Fi signal and the absence of interference in the air; the use of the 5 GHz band is preferable for video broadcasting.