Why Xiaomi Smartphone Doesn't See LG TV and How to Fix It
Connecting Xiaomiโs phone (including the Redmi, POCO and Black Shark models) to LG TV seems like a simple task โ until you encounter bugs like โdevice not foundโ or no sound. The problem often lies in protocol incompatibility: new Xiaomi smartphones on MIUI 14/15 use updated versions of Miracast and Google Cast, while LG TVs (especially models until 2020) can run on outdated versions of DLNA or Wi-Fi Direct.
Another pitfall is screen resolution. 4K LG TVs sometimes refuse to properly display streams from Xiaomi smartphones due to a mismatch in refresh rates (for example, 60 Hz on TV vs 90/120 Hz on phone). In this article, we will analyze all the current ways of connecting (including hidden MIUI settings), and also give a checklist for troubleshooting.
1. Wi-Fi connection (Screen Mirroring / Miracast)
The most versatile method is wireless screen broadcasting via Miracast (called Wireless Display in MIUI), which works on all LG webOS TVs (since 2014) and does not require additional cables. But there is a caveat: on Xiaomi phones with MIUI 13+, this feature is hidden in the depths of the settings.
To activate the broadcast:
- ๐ฑ On the phone: open Settings โ Connections and sharing โ Wireless display (or Screen Mirroring in English firmware). If there is no item, use the search by settings.
- ๐บ On TV: Go to Settings โ Network โ Screen Share (Miracast) and turn on standby mode.
- ๐ In the list of available devices on your phone, select your TV LG. Confirm the connection on both devices.
Challenges and solutions:
- โ "Device not found": check that both devices are connected to the same Wi-Fi network (even if you use Miracast). LG You need to turn off 5 GHz Wi-Fi in the router settings.
- โ Image delay: in Miracast settings on your phone, select Game mode (reduces lag to a low-level level) 30-50 miss).
- โ No sound: on TVs LG 2018-2020 For years, Miracast only transmits sound in format. PCM. Go to TV Sound Settings โ Sound exit โ PCM.
Enable Wi-Fi on your phone and TV|Shut down. VPN/smartphone proxy|Reboot the router (if the devices canโt see each other)|Update the TV firmware LG (Minimum version of webOS 3.5)-->
2. Connection through HDMI (quality 4K/60fps)
If you want maximum picture quality (for example, to watch movies in 4K HDR or stream games), use a cable connection.
- ๐ฑ adapter USB-C โ HDMI (For the new Xiaomi or Micro-USB โ HDMI (old-model).
- ๐บ Cable HDMI 2.0 or higher 4K@60fps).
- โก Power supply for the phone (broadcasting by HDMI discharges the battery).
Step-by-step:
- Connect the adapter to your phone and the HDMI cable to the adapter and HDMI port 1/2 on your TV.
- On the remote. LG press the button INPUT (or SOURCE) and select the appropriate HDMI-port.
- Xiaomi will have a notification about connecting to an external display. Select the "Duplicate screen" or "Expand screen" mode.
It's important! LG 2021-2026 port-year HDMI 2.1 You may need to enable Game Optimizer (Settings) โ All settings โ Picture โ Picture modes) to avoid artifacts when broadcasting games.
Why does the HDMI image flash or tear?
| Xiaomi model | Supported adapter | Max. HDMI resolution. | Notes |
|---|---|---|---|
| Xiaomi 13/14 Pro | USB-C โ HDMI 2.1 | 4K@60fps (HDR10+) | Requires an adapter with a DisplayPort Alt Mode chip |
| Redmi Note 12 Pro+ | USB-C โ HDMI 2.0 | 4K@30fps | At 60fps, there may be a slowdown. |
| POCO F5 | USB-C โ HDMI 2.0 | QHD@60fps | Supports Dolby Vision when manually enabled |
| Xiaomi 11T | USB-C โ HDMI 2.0 | 4K@60fps | You need to disable "Autolightness" in the display settings |
โ ๏ธ Note: Do not use cheap adapters without certification HDMI 2.0 โ They can burn down the port USB-C It's on Xiaomi phone. HDMI Adapter (with a chip) VMM5310) Or the original adapter from Xiaomi.
3. Connection via USB (MTP/PTP)
If you just need to view a photo/video from your phone on a large screen, you can use it. USB-This method does not broadcast the screen in real time, but allows you to open files through the built-in media player. LG.
Instructions:
- Connect your phone to your TV with a USB-A โ USB-C cable (or Micro-USB for older models).
- On Xiaomi phone, select Connection Mode: File Transfer (MTP).
- On LG TV, open the Photo and Video or Media Player app.
- In the list of devices, select your smartphone - access to DCIM, Downloads, etc. folders will open.
Limitations of the method:
- โ No apps are broadcasted (YouTube, Netflix, etc.).
- โ Video in.mkv or codec format H.265 may not reproduce (LG supports MP4/H.264).
- โ Data transfer speed is limited USB 2.0 (even if the port on the TV is marked as 3.0).
๐ก
If you're TV LG doesn't see the phone MTP, Try switching to PTP (To do this, pull the notification curtain on Xiaomi and click on the notification "USB-connection".
4. Connect via Google Cast (Chromecast built-in)
LG TVs on webOS 4.0 and higher (2019 and later) support built-in Google Cast (similar to Chromecast), which allows you to stream content from apps like YouTube, Netflix or Google Photos directly to TV without duplicating the entire screen of the phone.
How to set up:
- On LG TV, open the Google Play Movies or YouTube app.
- Click the โTranslationโ button (the icon with the screen and Wi-Fi) and select your TV from the list.
- On your Xiaomi phone, open the same app (like YouTube), click on the broadcast icon and select the TV.
List of supported applications:
- ๐ฌ YouTube, Netflix, Disney+
- ๐ต Spotify, Apple Music (sound only)
- ๐ท Google Photos, Gallery (Xiaomi)
- ๐ฎ Stadia, Xbox Cloud Gaming
โ ๏ธ Note: On Xiaomi phones with MIUI 14+ And if you turn on "Energy Saving Mode," you can stop streaming through Google Cast. Turn off the power saving for the app you're using (e.g. YouTube).
5. DLNA connection (for older LG models)
If you have an LG TV before 2018 (like the LJ550V or UK6300 series), it may not support Miracast or Google Cast. In this case, the DLNA protocol will help - it works even on the oldest models with NetCast.
To set up:
- Install the app โBubbleUPnPโ or โLocalCastโ on Xiaomi phone (available on Google Play).
- In the application settings, turn on "DLNA-server".
- On LG TV, open Smart Portal โ Media Server (or DLNA in older models).
- Select your phone from the list of devices and start playback.
DLNA problems and their solutions:
- โ "File not supported: Convert video to MP4 (H.264) via appendix MX Player.
- โ "No sound": in settings DLNA Choose the sound format on your phone PCM (Not Dolby).
- โ "Slow boot: connect your phone and TV to your router via cable (if possible) or use Wi-Fi 5 GHz.
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DLNA is the only way to connect Xiaomi to LG TVs from 2012-2017, but it only works for local files (not streaming from the Internet).
6. Solving common errors
Even after you're connected properly, you can have problems. Here's a checklist for diagnosis:
| Problem. | Possible cause | Decision |
|---|---|---|
| The phone screen is not duplicated | Permit incompatibility | On Xiaomi, set Full HD resolution in the display settings |
| The sound is only through the phone. | Bluetooth audio on TV | Disable all Bluetooth devices in LG settings |
| Lags for game broadcasting | High frame rate on the phone | Enable "Game Mode" in Miracast settings on Xiaomi |
| TV doesn't see phone in Miracast | Blocking by router | Turn off AP Isolation in the Wi-Fi router settings |
| Black screen on HDMI | Wrong regime. HDMI-port | On TV. LG choose PC customized HDMI-entrance |
If none of the methods worked, check:
- ๐ Firmware updates: on Xiaomi phone go to Settings โ The phone. โ System updates. LG: Settings โ Support โ Update of the PO.
- ๐ Reset network settings: on Xiaomi: Settings โ SIM-maps and mobile networks โ Resetting network settings.
- ๐ Hardware malfunctions: Try another cable HDMI Or an adapter. LG port often fails HDMI 3.