Modern Xiaomi smartphones offer powerful multimedia functionality that often extends beyond their small screen. Users often need to share photos with friends, play high-resolution videos on a larger display, or even play a mobile game with better graphics. Screencasting has become a de facto standard, and Android device owners can implement it without purchasing additional cables.
The basis for such a connection is a wireless network. Wi-Fi, which provides high-speed data transfer. In the ecosystem Xiaomi And MIUI (or new HyperOS) This feature is deeply integrated into the system, but has its own nuances depending on the TV model. You won't need complex router settings if both devices are on the same network.
In this article, we'll cover all available synchronization methods, from built-in system tools to third-party apps. We'll also look at why your phone sometimes doesn't detect your TV and how to fix connection errors. The key to successful signal transmission is that both devices are on the same local Wi-Fi network, even if the router transmits a signal at both 2.4 GHz and 5 GHz frequencies simultaneously.
Wireless image transmission technologies
Before you begin setting up, it's important to understand what technologies the devices use. Smartphones Xiaomi support several protocols, each of which has its own characteristics. Miracast — is a wireless multimedia transmission standard that allows you to broadcast images directly, without the use of the Internet, using only a local network.
Another popular method is Google Cast (Chromecast built-in). This feature is unique in that the phone only acts as a remote control, while the TV downloads video from the network. This reduces the strain on the smartphone's battery and allows the device to be used for other tasks while watching.
There is also technology AirPlay 2, which is now supported by many Smart TVs, allowing iPhone and Xiaomi device owners with the appropriate software to easily connect to TVs from various brands. The choice of method depends on what you want to do: mirror the entire screen or simply play a video.
- 📺 Miracast: Full screen mirroring in real time, ideal for gaming and presentations.
- 🌐 DLNA: Transfer media content (photos, videos, music) from your phone's memory to TV.
- 📡 Google Cast: Stream videos from apps (YouTube, Netflix) controlled from your smartphone.
Preparing equipment and network
A successful connection directly depends on proper infrastructure preparation. Make sure your router is working properly and is transmitting a signal. Smartphone Xiaomi The TV and the router must be connected to the same access point. If you have a dual-band router, it's better to use the 5 GHz network for 4K video streaming, as it provides more bandwidth.
⚠️ Important: If your router is configured to separate networks (separate names for 2.4 GHz and 5 GHz), make sure both devices are connected to the same network. In some cases, client isolation in the router settings may prevent devices from discovering each other.
Check the software version on your TV. Manufacturers Samsung, LG, Sony and others regularly release updates for their Smart platforms (Tizen, WebOS, Android TV). Outdated firmware may not contain the necessary security certificates or protocols to work with newer versions. MIUI.
It's also worth checking your smartphone's battery. Active video streaming drains a significant amount of power. If you're planning a long session, it's best to charge your phone to avoid a sudden shutdown at the most inopportune moment.
Using the built-in "Cast" feature in MIUI
In the shell MIUI And HyperOS There's a native tool that doesn't require installing any additional apps. It's called "Cast" and uses the Miracast protocol. To launch, open the Control Center by swiping down from the top and find the "Cast" icon. If it's not visible, tap the edit icon (usually three dots or a pencil) and add the widget.
Once the feature is activated, your phone will begin searching for available devices on the network. A connection confirmation prompt may appear on the TV screen; accept it with the remote control. On some TV models, you'll need to launch the "Screen Share," "Miracast," or "Cast" app from the app menu first.
☑️ Pre-broadcast check
Image quality in this mode depends on the phone's processor power and Wi-Fi speed. You may see a delay of a few milliseconds, which is normal for a wireless connection. While this isn't noticeable when watching movies, it can be noticeable in fast-paced shooters.
| Parameter | Description | Impact on quality |
|---|---|---|
| Wi-Fi frequency | 2.4 GHz vs. 5 GHz | 5 GHz ensures 4K stability |
| Distance | Proximity to the router | Reduces the number of breaks |
| Network load | Downloads on other devices | May cause buffering |
| Android version | Android 9, 10, 11+ | New versions have improved codecs |
Broadcast via the Google Home app
If the built-in function Xiaomi If your TV isn't finding your TV or it's not working properly, the best solution is the official app. Google HomeIt is available in Google Play Market and works with any TV with built-in Chromecast or Google Cast support. This is the most reliable option for Android users.
After installing the app and signing in to your Google account, click your TV icon in the list of devices. In the menu that opens, select "Cast my screen." Your phone will notify you that audio and video will be cast, and then mirroring will begin.
⚠️ Please note: When using Google Home, your phone may become warmer than usual due to active video encoding. We recommend removing your phone case for better heat dissipation if streaming content for more than 30 minutes.
The advantage of this method is its versatility. You can broadcast browser tabs Chrome, photos from your gallery, or even your desktop. Google Home also lets you control your TV volume directly from your phone.
Broadcasting from specific apps (YouTube, Netflix)
The most energy-efficient way to watch videos is to use the built-in "Cast" button (the rectangle icon with waves) within the apps themselves. When you watch a video in YouTube, Netflix or Kinopoisk On your phone, click on this icon.
Unlike full mirroring, in this case, the phone only sends a link to the video stream to the TV. The TV automatically downloads the video via its Wi-Fi module. This means the picture quality will be excellent (including HDR and Dolby Vision), and the smartphone's battery will be very battery-efficient.
What should I do if the broadcast button doesn't appear?
Make sure the app is updated to the latest version. Check that your phone and TV are on the same network. Restarting the router can sometimes help. In rare cases, the router's antivirus software may block discovery protocols (UPnP).
If you use subscriptions like YouTube PremiumYou can also download videos to your phone for offline viewing, but casting downloaded files directly to a TV using the Cast button is often not possible due to DRM restrictions. In this case, you'll have to use full screen mirroring.
Third-party solutions and applications for Smart TV
Sometimes standard methods don't work due to specific TV firmware. In such cases, universal apps come to the rescue. For TVs Samsung The app is often recommended Smart View (although now its functions are built into Android), and for LG — LG ThinQ.
There are also cross-platform solutions such as Web Video CasterThis app lets you stream video files from any website directly to your TV, bypassing browser restrictions. It's especially useful if you watch videos on websites that don't have an official Smart TV app.
- 📱 Web Video Caster: The best choice for streaming video from your browser.
- 🖥️ TeamViewer / AnyDesk: For remote control, but with high latency (not for video).
- 🎮 Steam Link: A specialized application for broadcasting games from a PC or phone to TV.
When installing third-party software, carefully read permissions. Broadcasting apps require access to the local network and microphone (for voice search), but access to contacts or SMS is usually not required and may indicate a lack of developer trust.
Troubleshooting and performance tuning
Even under ideal conditions, glitches can occur. If the image is choppy or the sound is missing, try rebooting your router. Often, the problem lies in a router buffer overflow or an IP address conflict.
Check if "Guest Network" mode is enabled on your router. Devices on a guest network are often isolated from the main network, so the phone simply "can't see" the TV. Switch both devices to the main network.
In some cases, resetting the network settings on your smartphone helps. XiaomiGo to . Settings → Connection and sharing → Reset Wi-Fi, mobile networks, and BluetoothThis will delete saved passwords, but often solves problems with discovery protocols.
⚠️ Note: MIUI and HyperOS interfaces may differ depending on the Android version and regional firmware (Global, China, EU). If you don't find the described options, search your phone's settings and enter the word "Cast."
Why doesn't my Xiaomi phone see the TV in the list of devices?
The most common problem is that the devices are connected to different router frequencies (2.4 GHz and 5 GHz) with different network names. UPnP may also be disabled in the router settings or access point isolation may be enabled. Try temporarily disabling mobile data on your phone, leaving only Wi-Fi enabled.
Is it possible to broadcast a screen without the Internet, only via Wi-Fi?
Yes, Miracast and Wi-Fi Direct technologies work locally. Internet access is not required for image transmission; only a working Wi-Fi module on both devices is required. However, to play online videos (like YouTube), the TV or phone itself will still need internet access.
Does broadcasting affect internet speed at home?
When using Google Cast or DLNA (where the TV downloads the video itself), no, the phone only issues commands. With full screen mirroring (Miracast), the phone encodes the video stream, but this doesn't load the internet bandwidth, as the data is transferred within the local network. However, the process itself can put a strain on the phone's processor.