Xiaomi’s refusal to broadcast a picture to the big screen is familiar to many users, and it seems to be done right: Wi-Fi is on, broadcast mode is selected, but the TV is either not visible in the list of devices, or the connection is cut off after a few seconds, a problem that can be caused by a variety of factors, from banal desynchronization of router frequencies to conflicting versions of the Miracast and DLNA protocols.
Most of the time, the failure occurs at the network settings or software level of the MIUI (or HyperOS) system, sometimes the router itself is the culprit, which misallocates traffic between devices on the same LAN, and it is important to understand that the process of transmitting media requires a stable communication channel, and even the slightest interference can interrupt the connection.
In this article, we’ll look at all the possible reasons why your phone doesn’t connect to your TV via Wi-Fi on Xiaomi devices, look at hidden menu settings, check standards compatibility, and suggest alternative methods for displaying images if the standard features don’t work.
Checking a single network and frequency ranges of the router
The most common mistake users face is finding devices on different subnets. To work properly, Wi-Fi Direct or DLNA requires that both your smartphone and your TV are connected to the same LAN. If you have a dual-band router, make sure both devices "see" each other.
Modern routers often divide the network into 2.4 GHz and 5 GHz bands. Some older TV models or Xiaomi Mi Box budget boxes may not support 5 GHz while your phone runs exclusively on it. In this case, despite the same network name (SSID), devices cannot physically establish a direct connection to transmit video stream.
- 📡 Check that both devices have Wi-Fi enabled and select one SSID.
- ⚙️ Make sure the option is disabled on the router "AP Isolation (customer isolation) which prohibits the exchange of data between devices within the network.
- 🔄 Try temporarily switching your smartphone to 2.4GHz to check compatibility.
⚠️ Note: If your router uses a Guest Network for one of the devices, the screen broadcast connection is guaranteed to be uninstalled due to security restrictions.
It is also worth checking the settings. DHCP If the address pool is exhausted, the new device may not be able to access it. IP-Rebooting the router often helps to reset address allocation errors and restore normal communication between the gadjs.
Configure the function "Translation" and Wi-Fi Display
In the MIUI shell and the new HyperOS, the image output feature is called Translation, which is based on the Miracast standard. If your TV is not a Smart TV or does not support this protocol natively, the phone simply will not see it in the list of available devices, in which case you need to use external receivers or software emulators.
To activate the function, you need to lower the notification curtain and find the Translation icon. If it is not available quickly, go to Settings → Connection and Sharing → Broadcast. This is where the system starts searching for available receivers. It is important that the TV also runs the appropriate mode (often called Screen Share, Miracast or Wireless Display).
Sometimes manual input helps. PIN-But 90 percent of the time, the problem is not the code, but that the device detection service in the background has been stopped by the power saving system. MIUI It is known for its aggressive optimization, which can kill the search processes of the network.
☑️ Translation diagnostics
It’s also worth noting that some TV models require the Wi-Fi Display feature to be manually enabled in the network settings menu, without which the TV will only work as a normal Internet access device, not as a video receiver.
Compatibility of protocols and codecs
While Xiaomi uses its Miracast implementations, Samsung TVs can rely on AllShare Cast and LG can rely on Smart Share. While the basic standard is uniform, implementation nuances often lead to conflicts. The phone sees the device, tries handshake, but is denied connection due to mismatch of video compression codecs.
| Protocol | Description | Compatibility with Xiaomi | Typical mistake |
|---|---|---|---|
| Miracast | Standard for wireless video transmission | High (native) | Black screen when connected |
| DLNA | Transfer of media files (photos, videos) | Through the "Mi Video" app. | Can't see the file format. |
| Chromecast | Google's technology for streaming | Through apps (YouTube, Netflix) | Unstable buffer |
| AirPlay | Apple protocol | Only through third-party applications | Total absence of the device |
If you’re trying to stream video from a gallery, use the built-in Mi Video (or Google TV) app, which has a built-in casts button.It automatically selects the appropriate protocol (most often DLNA or Chromecast), bypassing the system broadcast of the screen, which often solves the incompatibility problem.
Why does the sound disappear during broadcast?
In some cases, changing the screen resolution before connecting helps. If the phone tries to broadcast an image in 4K 60Hz, and the TV or router does not pull this bandwidth through the air, the connection will break. Try temporarily lowering the resolution in the display settings.
The Effect of VPN and Antivirus Software on Connection
Activated VPN-service is a common but not obvious cause of problems. VPN, All your phone traffic is redirected through a remote server, and your home's local network is no longer local to the system as the packet routing changes, and as a result, the phone simply can't find the TV in the next room.
Similarly, some Network Protection antiviruses can block ports required for Wi-Fi Direct to operate, considering trying to connect to a TV as a potential attack from the outside, especially for antiviruses installed in addition to Xiaomi’s regular Security.
- 🛑 Turn it off completely. VPN before attempting to connect to the TV.
- 🔒 Check the firewall settings in antivirus software.
- 📱 Make sure that the Security app does not have a background limit for Wi-Fi system services.
⚠️ Attention: Even if VPN It works in “Split Tunneling” mode, it can still create a virtual network interface that conflicts with device search. DLNA/Miracast. Better turn it off completely.
If you need to use it VPN To access content on your TV, set it up directly on your router or use Smart TV plug-in VPN, If this is available, broadcast the screen with the switch on VPN It is technically impossible for local devices.
Reset network settings and update firmware
Accumulated errors in network configurations can block the normal operation of the Wi-Fi module. In the MIUI-based Android system, there is a network reset function that does not delete your personal data (photos, contacts), but cleans the stored Wi-Fi passwords, Bluetooth settings and mobile network.
To perform the reset, go to Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. After this operation, the phone will reboot network modules. This often helps if the phone is “hang” in search state or incorrectly determines the characteristics of the router.
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Before resetting your network settings, make sure you remember your Wi-Fi password, as it will have to be re-entered. It is also recommended to take a screenshot of important static IP settings if you are using it for work.
Don’t forget the software. The outdated version of MIUI may contain bugs in the Wi-Fi module drivers. Check for updates in Settings → Phone → MIUI version. Similarly, check for firmware updates on the TV itself — manufacturers often release patches to improve compatibility with new smartphones.
In rare cases, cleaning the cache of Google Play Services and the Google Home app helps, as they are responsible for the Chromecast protocols. Go to Settings → Apps → All Apps → Google Play Services → Storage → Clear the cache.
Alternative ways of connecting and third-party applications
When the standard methods don't work, third-party solutions come to the rescue, applications like Web Video Caster, BubbleUPnP or TV Cast can bypass many of the system's limitations, use their own search algorithms, and often successfully connect where standard Translation is powerless.
For TVs without Smart TV can be used HDMI-Adapters (e.g. Chromecast with Google) TV In this case, the phone does not connect directly to the TV, but to the console operating system, which guarantees maximum compatibility and stability of the connection.
Also worth considering is a wired connection via the USB-C to HDMI adapter.This is the only way to get the picture in maximum quality without delay (lag), which is critical for gaming. Xiaomi phone in this case acts as a signal source, ignoring any problems with the Wi-Fi network.
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Use of the HDMI-Adapter or TV set-top boxes are the most reliable way to get a stable picture if the wireless connection constantly fails or does not support the desired resolution.
In conclusion, the problem of lack of connection is most often solved by checking the single network, turning off VPN and updating software. However, if none of the methods helped, it may be the hardware incompatibility of Wi-Fi modules of a particular year of release.