Modern users rarely watch content exclusively on smartphone screens, as the diagonal of even a flagship device limits immersive experience. It is much more enjoyable to enjoy your favorite movies, TV series or photos from a vacation on the big screen, especially when you have a smart TV from Xiaomi or the Mi Box. Fortunately, the manufacturer’s ecosystem provides many synchronization scenarios, from simple wireless protocols to wired connection with minimal signal latency.
In this article, we will discuss in detail how to broadcast an image from a mobile device to a TV using the built-in functions of the Android operating system and the proprietary shells MIUI or HyperOS. You will learn about the nuances of Miracast technology, the benefits of streaming through Chromecast and situations when you simply can not do without a physical HDMI cable.
Before you start setting up, make sure both devices are working correctly and have current versions of the software. Often connection problems arise from trivial mismatches between security protocol versions or outdated Wi-Fi module drivers. We will look at both the standard tools and third-party applications that can be useful in difficult cases.
Preparation of equipment and network for synchronization
The foundation of successful wireless data is a stable LAN. For a phone to see a TV, both devices must be connected to the same router, a critical condition, since device detection protocols often rely on broadcast packets that do not pass across the boundaries of different subnets or guest Wi-Fi zones.
It is recommended to use the 5GHz band if your router and TV support this standard.It provides significantly higher bandwidth, which is necessary to transmit a video stream in 4K or 1080p resolution without compression artifacts and delays. At the same time, the 2.4GHz frequency is more long-range, but may not cope with heavy video streaming, especially if the channel is loaded with neighboring networks.
⚠️ Note: If your router gives away two different networks (e.g, Xiaomi_2.4G and Xiaomi_5G), Make sure your phone and TV are connected to one of them, rather than being spaced in different frequencies, as some routers isolate customers between bands.
It's also worth checking if the client isolation feature on the router is enabled. In wireless security settings, this option can be called AP Isolation or Client Isolation. If it's active, devices on the network will be able to access the Internet but won't see each other, making it impossible to start a broadcast.
- 📶 Make sure both devices are connected to the same Wi-Fi network. SSID.
- ⚡ Check that the router does not use customer isolation mode (AP Isolation).
- 🔄 Restart your router if the network is unstable or devices are not finding each other.
After checking your network settings, you need to update the software on your TV. In the Xiaomi TV menu, go to the settings section and find Device About, then select System Update. Manufacturers regularly release patches that improve compatibility with new versions of Android on smartphones.
Use of the built-in Translation (Miracast) function
The most common way to duplicate screens on Xiaomi devices is based on Miracast technology, which allows video to be transmitted directly, creating a secure connection between the phone and the TV without the router (Wi-Fi Direct mode) or via a local network. On Xiaomi smartphones, this feature is often hidden in the Connection and Sharing menu or called through the control center.
To run the process on a Xiaomi TV with a PatchWall shell or a pure Android TV You need to open the Wireless or Miracast app, and on some models, you just have to click the Home button on the remote and select the source of the Wireless Display signal, and then the TV will go into the standby mode, displaying the device name and sometimes the device will be displayed. QR-fast-couple.
On the smartphone side, the algorithm is to lower the notification curtain and find the Translation icon (sometimes called Projection or Wireless projection). If the icon is not there, go to Settings → Connection and Sharing → Broadcast. Once you turn on the search, the system will start scanning the airwaves for available receivers.
⚠️ Note: When using Miracast, the phone screen is completely duplicated on TV, which means that any notifications, incoming calls or messages will be visible to all viewers on the big screen, so it is recommended to turn on the Do Not Disturb mode before the movie».
The quality of the image in this mode depends on the power of the Wi-Fi module and the distance to the router. Miracast technology is sensitive to interference, so when you move sharply or move away from the router, short-term communication breaks or a decrease in resolution are possible.
- 📱 Activate the Translation feature in the Android Control Center.
- 📺 Launch the Wireless Broadcast app on Xiaomi TV.
- 🔗 Select your TV name from the list of found devices on your smartphone.
Broadcasting through Google Chromecast and apps
Unlike full screen duplication, Chromecast built-in allows only content to be transmitted to the TV, not the entire interface of the smartphone. This is a more energy-efficient way, since the phone acts as a remote control, and the TV downloads the video stream independently from the Internet, which is supported by almost all Xiaomi TVs with Android TV.
To use this method, make sure you have the Google Home app installed.It is necessary for initial setup and device management, although many apps (YouTube, Netflix, Spotify) have a built-in casts button. Find the familiar rectangle icon with the waves in the corner in the app and click it.
Why does the sound disappear during broadcast?
The advantage of this method is that you can roll the app on your phone, answer a call, or even lock the screen, and playback on the TV will not be interrupted, which is perfect for watching YouTube or movies from online cinemas when you need to use the phone for other tasks.
If the standard button doesn't work, check the app's permissions. In Android settings, go to Apps → [Application Name] → Permissions and make sure that you allow access to the LAN. Without that permission, the app won't be able to detect the TV on your Wi-Fi network.
- 🎬 Open the application with video (YouTube, Netflix, Movie Search).
- 📡 Click on the “Chromecast” icon inside the player interface.
- ✅ Confirm the connection on the TV screen if required.
Wired connection via HDMI and USB-C
Wireless technology is convenient, but it can’t guarantee absolute stability and zero latency, which is critical for gaming or watching video at maximum bitrate. In such cases, wired connectivity comes to the rescue. However, there’s an important caveat: the USB-C port on your smartphone should support a video output standard known as DisplayPort Alt Mode or MHL.
Most of Xiaomi’s flagship models (Mi series, Xiaomi 11/12/13/14, some Redmi Note Pro models) support digital output. Budget devices often don’t have this capability, and cable connection will not do anything in this case – the phone will only charge. You will need a USB-C to HDMI adapter to connect.
☑️ Checking before buying the cable
The connection process is as simple as possible: insert the adapter into the phone, connect the HDMI cable to the adapter and TV, then switch the signal source to the TV to the appropriate port (for example, HDMI 1). The image should appear automatically. If this does not happen, check the phone settings section "Advanced settings" → "Connections".
| Parameter | Wireless (Miracast) | Chromecast | HDMI cable |
|---|---|---|---|
| Image quality | Depends on the network (compressed) | High (up to 4K HDR) | Maximum (no compression) |
| Delay (Latency) | High (100-300 ms) | Medium | Minimum (<10 ms) |
| Battery consumption | High-pitched | Low. | Charging the phone |
| Stability | Medium | Tall. | Absolute. |
When using the cable, the phone can go into a special mode of operation, allowing you to control the interface with a mouse or remote control, if the appropriate controller is connected, which turns the smartphone into a computer-like kind, which is convenient for presentations or demonstrations of photo albums.
Third-party applications for screen duplication
Staff tools don’t always work perfectly, especially if you want to stream content from applications that block screen recording (DRM protection) or if the devices are on different subnets, and in such cases, third-party solutions that use their own algorithms for encoding the video stream come to the rescue.
One of the most popular solutions is the Web Video Caster or LocalCast app, which allows you to stream not only videos from online libraries, but also files stored in your phone’s memory or on the NAS network storage. Install the app on your phone and, if required, a companion app on your TV (although often a built-in DLNA receiver is enough).
⚠️ Note: When using third-party apps to stream paid content (streaming services), you may encounter a black screen instead of a video (HDCP), It is impossible to circumvent it by legal means.
Another powerful tool is AirScreen (installed on a TV from Google Play).This app emulates an AirPlay receiver, allowing iPhone (iOS) owners to easily connect to Xiaomi's Android TV. For Android smartphones, it also provides an alternative, often more stable Miracast receiver.
- 📥 Install a transmitter app on your smartphone (e.g. Web Video Caster).
- 📺 Install a receiver app on TV (such as AirScreen) if the regular one doesn’t work.
- 🎯 Select a file or link and click the device connection button.
Solution: Black screen and desynchronization
Even if you set it up properly, you can have technical problems, the most common of which is having an image but not having sound, or vice versa. In Android, you can do this through the audio menu when you're livestreaming, you can manually switch the output device from the phone's speakers to HDMI or wireless.
Another common problem is desynchronizing audio and video (lipsync). If the sound is ahead of the video or lags, try to find the "Audio delay" or "Lip Sync" option in the TV settings and adjust the value in milliseconds, and switching the audio format in the YouTube app from "Auto" to a specific codec (for example, AAC), if this option is available, will also help.
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If the image twitches, try lowering the output resolution. In the broadcast settings on your phone (if available) or in the screen settings, select 720p instead of 1080p/4K - this drastically reduces the load on the Wi-Fi channel.
If the TV doesn't see the phone at all, try resetting network settings on both devices. On Xiaomi, this is done via Settings → Connection & Sharing → Reset Wi-Fi, mobile networks and Bluetooth. Remember, this will delete stored Wi-Fi passwords, but often solves network drivers problems.
In rare cases, the problem lies in an antivirus or firewall on a router that blocks ports used for Discovery protocols (usually UDP 1900 for DLNA/SSDP).
Frequently Asked Questions (FAQ)
Why is YouTube video interrupted every 5 minutes?
Can I bring the iPhone screen to the Xiaomi TV?
Is the audio streamed via Bluetooth if the video is on Wi-Fi?
Why is the picture not on the whole screen (black bars on the sides)?
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The perfect script for each method: Miracast for photos and presentations; Chromecast for online video; HDMI-cable for games and 4K-maximum-bitrate films.