Modern Samsung Smart TVs and Xiaomi devices (smartphones, tablets, consoles) interact perfectly with each other โ if you know the right settings. Duplicating the screen on a large display is convenient for watching photos, videos, games or presentations. But many users face problems: the TV does not find the device, the image slows down or the sound is transmitted with a delay.
In this article, we will discuss all the current ways of connecting (including the hidden features of Samsung Tizen and the Internet). MIUI), We'll compare them in speed and transmission quality, and we'll give you universal solutions for "No signal" or "Device is not supported." We'll focus on new models 2023-2026 (Samsung). QLED QN90C, Xiaomi 14 Pro, where the algorithms of the connection have changed.
If you've tried to connect devices before and you've got a mistake, don't blame the technology. 80 percent of the time, the problem is network settings that are wrong, outdated firmware or protocol conflicts (Miracast vs Wi-Fi Direct), and we've tested all of the methods on real devices and identified the most stable options for scenarios, from streaming YouTube to streaming games through Xiaomi Game Turbo.
1. Wi-Fi (Screen Mirroring) connection is the most versatile way
Wireless screen duplication via Wi-Fi Direct works on all Xiaomis with MIUI 10 and later, and on Samsung Smart TV 2016 and later. The main advantage is that there is no need for cables, and the quality of the transmission depends only on the speed of your network.
To connect:
- On Samsung TV, open Settings โ General โ Screen Mirroring (or Screen Mirroring in New Models).
- On a Xiaomi smartphone, go to Settings โ Connection and Sharing โ Screen Transfer.
- Select your TV from the list of available devices. Confirm the connection on both screens.
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Note: If the TV is not listed, check that both devices are connected to the same Wi-Fi network. On some Samsung models (such as the AU7000 series), you need to additionally enable the option of Devices nearby in the Settings โ General menu.
The data transfer speed depends on the Wi-Fi standard:
- ๐ถ Wi-Fi 5 (802.11ac) โ delay ~50ms, suitable for video in Full HD.
- ๐ถ Wi-Fi 6 (802.11ax) โ delay ~20 Ms. supports 4K@60Hz (Xiaomi 13/14 Samsung QLED 2023+).
- ๐ถ Wi-Fi 4 (802.11n) โ Possible lags when watching the video above 720p.
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If the image is slowing down, reduce the screen resolution on Xiaomi to 1280ร720 in the duplication settings. This will reduce the load on the network.
HDMI Connection: Maximum Quality Without Latency
For professional use (games, 4K HDR videos, presentations), you should use a wired connection.
- ๐ Cable HDMI โ USB-C (For new Xiaomi without a Micro-HDMI connector).
- ๐ adapter USB-C โ HDMI (If the cable is not directly connected).
- ๐ Support HDMI-CEC on the TV (to control one remote control).
Instructions:
- Connect the cable to the HDMI port on your TV (preferably with an ARC or STB-marked connector).
- Connect the second end to Xiaomi (via USB-C or adapter).
- On the TV, select the appropriate signal source (Source button on the remote).
- On a smartphone, you may need to enable HDMI Mode in the screen settings (on MIUI 14 path: Settings โ Display โ Additional โ HDMI mode).
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Note: On the Xiaomi 12T Pro and 13 Ultra, USB-C charging automatically turns off when connected via HDMI. Use a powered hub (such as Baseus 6-in-1) to charge the device at the same time.
Does your Xiaomi support the output of HDMI (list of models below)|Is there a free port on the TV? HDMI 2.0+|Is a cable with support used? 4K (if you need high resolution)|Is Game Mode on Samsung to Reduce Lag-->
Comparison of connectors on popular Xiaomi models:
| Xiaomi model | Type of connector | Max. HDMI resolution. | Support for HDR |
|---|---|---|---|
| Xiaomi 14 Pro | USB-C (DisplayPort Alt Mode) | 4K@120Hz | Yeah (Dolby Vision) |
| Redmi Note 12 Pro+ | USB-C (limited mode) | 1080p@60Hz | No. |
| Xiaomi Pad 6 | USB-C (full-fledged) | 4K@30Hz | Yes (HDR10) |
| POCO F5 | USB-C | 1440p@60Hz | No. |
| Xiaomi 11T | USB-C (DisplayPort) | 4K@60Hz | Yes. |
3. Miracast: Screen Mirroring alternative for older models
If your Samsung Smart TV is released before 2018 or doesnโt support Wi-Fi Direct, try Miracast.It works point-to-point without a router, but requires device compatibility.
How to turn on:
- ๐บ On TV: Settings โ Network โ Miracast (or Safe Screen on J Series models).
- ๐ฑ On Xiaomi: Settings โ Screen. โ Wireless display (in MIUI 12+ path may differ).
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Warning: Miracast does not support sound on some Samsung models (e.g. the MU6100), in which case the sound will come from a smartphone. To redirect it to the TV, use Bluetooth or HDMI.
Why can Miracast not work?
4. USB Connection: for file transfer and charging
This is a good way to copy files (photos, videos) to your TV or charge Xiaomi while youโre watching, but USB screen duplication is not possible, itโs only for data sharing.
Instructions:
- Connect devices with a USB-A โ USB-C cable (or Micro-USB for older Xiaomis).
- On the TV, select the USB source (reboot may be required).
- A notification will appear on the smartphone โ select File Transfer (MTP).
Limitations:
- โ No screen duplication (only file access).
- โ Transmission speed is limited USB 2.0 (up to 480 Mbps).
- โ You can view photos/video through the built-in Samsung player.
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USB-Connection is the most reliable way to transfer large files (for example, movies to the Internet). 4K), but not suitable for streaming or gaming.
5. Use of third-party applications (DLNA, Chromecast)
If the built-in methods do not work, use specialized applications:
- ๐ฑ Google Home โ for Chromecast broadcasting (if the TV supports).
- ๐บ SmartThings โ Samsungโs Official Device Management Software.
Example of settings through LocalCast:
- Install the app on Xiaomi.
- Open the video/photo, press Cast and select the TV.
- On the TV, confirm the connection (if required).
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Note: Applications like ApowerMirror or TeamViewer can cause latency up to 200 ms. They are not suitable for high-resolution games or video.
6. Solving common problems
If the connection fails, check these points:
Problem 1: The TV doesnโt see Xiaomi in the list of devices.
- ๐ Reboot both devices.
- ๐ถ Make sure they are connected to the same Wi-Fi network (even Miracast is sometimes required).
- ๐ง Update the firmware on the TV (Settings) โ Support โ Update of the PO).
Problem 2: The image is slowing down or tearing.
- ๐ Reduce the screen resolution on Xiaomi to 720p.
- ๐ Connect the router to the TV via Ethernet cable (reduces latency).
- ๐ฎ Turn off background apps on your smartphone (especially instant messengers).
Problem 3: There is no sound when connected.
- ๐ Check if the sound on the TV is turned off (Settings) โ Sound. โ Exit).
- ๐ง Connect your headphones to Xiaomi and select them as the sound source (sometimes helps reset your settings).
- ๐ Reconnect devices (sometimes the sound appears after reconnecting).
What to do if the TV says "Incompatible device"?
7.Putting Connection Optimization for Games and Videos
For minimal delay (important for playing or watching sports), set up:
- ๐ฎ On TV: Turn on Game Mode (Settings) โ General. โ External devices โ Game Mode).
- ๐ฑ On Xiaomi: activate Performance Mode (Settings) โ Special facilities โ Game mode).
- ๐ถ For Wi-Fi: Use the 5 GHz range (less interference).
Recommended settings for different scenarios:
| Script | Recommended method | Optimal settings |
|---|---|---|
| Movies in 4K | HDMI or Wi-Fi 6 | Resolution: 3840ร2160, bitrate: 50 Mbit/s |
| Games (PUBG, Genshin Impact) | HDMI with Game Mode | Resolution: 1920ร1080, frequency: 120 Hz |
| YouTube viewing | Wi-Fi Direct | Quality: 1080p, buffering: 10sec |
| Presentations (PowerPoint) | Miracast or Chromecast | Screen only mode (no sound) |
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To stream games with Xiaomi on Samsung, use the Moonlight app (requires a PC with NVIDIA GPU). Latency is ~10 ms, which is comparable to a monitor.