How to connect Samsung Galaxy A12 to Xiaomi TV: all working ways of 2026

Connecting the Samsung Galaxy A12 to a Xiaomi TV opens up new possibilities, from watching movies on the big screen to showing presentations or streaming games. However, many users face compatibility issues — especially when it comes to brands with different ecosystems. In this article, we will discuss all the current ways of connecting, including wired and wireless methods, taking into account the features of the MIUI and One UI firmware.

It’s important to understand that the choice of method depends on the model of your Xiaomi TV (Mi TV A series, Mi TV Q, Redmi Smart TV, etc.), the version of Android on the Galaxy A12, and even on the availability of additional adapters. We tested each method on devices from 2020 to 2026 and highlighted the only method that works on 100% of Xiaomi TVs without lags – connecting via a USB-C to HDMI adapter with DisplayPort Alt Mode support.

If you've tried connecting devices before and you've had errors like "Unconnected" or "Device not supported," there's a section at the end of this article that addresses typical problems, and we've also compared all the methods in the table by speed, image quality, and setup complexity, which will help you choose the best option for your tasks.

1. Checking device compatibility before connection

Before you go into setting up, make sure your devices support the connection method you choose.

• 📱 Samsung Galaxy A12 (model SM-A125F, SM-A127F): Miracast (Wireless Broadcast), USB-C Alt Mode (for Alt Mode) HDMI-adapters DLNA It's not built-in for media files. HDMI-port.
• 📺 Xiaomi TVs: Mi series TV 4S/4A/4C (2018–2020): support for Miracast and DLNA, But they may not have Wi-Fi Direct. TV Q1/Q2, Redmi Smart TV X (2021–2026): Full support for Wi-Fi Direct, Miracast and Google Cast (if Google is installed) TV).
• 🔌 Adapters and cables: An adapter will be required for wired connection USB-C to HDMI DisplayPort Alt Mode (such as Baseus or the original Samsung) EE-HG970>). Normal. USB-A to HDMI adapters won't work!

To avoid problems, update the firmware on both devices:

• On Samsung A12: Settings → Software Update → Download and Install.
• On Xiaomi TV: Settings → About TV → System Update.

⚠️ Note: If your Xiaomi TV is released before 2019 years (e.g. Mi) TV 3S), It may not support Wi-Fi Direct, and then you only have a wired connection through the wire. HDMI-adapter Chromecast/Fire TV Stick as a middleman.

Method 2: Wired connection via USB-C to HDMI (recommended)

This is the most stable method, guaranteeing minimal delays and maximum picture quality (up to 1080p@60Hz) suitable for watching videos, playing games and working with documents.

What you need:

• 🔌 adapter USB-C to HDMI DisplayPort Alt Mode (priced from 800) ₽). Cheap adapters without DisplayLink chip won’t work!
• 📺 HDMI-cable (usually complete with a TV).

Step-by-step:

1. Connect the adapter to the USB-C port on the Samsung A12.
2. Connect the adapter to the TV through HDMI-cable (use the port) HDMI 1 HDMI 2 marked ARC for better compatibility).
3. On Xiaomi TV, select the signal source: press Input on the remote and select the appropriate one. HDMI-port.
4. The smartphone will be notified, "External display connected." Allow duplicate screens.

If the image does not appear:

• Check that the adapter supports DisplayPort Alt Mode (the box should have the appropriate inscription).
• Reboot both devices.
• Try another one. HDMI-cable (sometimes cheap cables don’t transmit signals from mobile devices).

adapter USB-C to HDMI DisplayPort Alt Mode|HDMI-cable (versions 1.4 or higher)|TV on mode HDMI|On the smartphone, screen duplication is allowed-->

⚠️ Note: Some Xiaomi TVs (e.g. Mi) TV 4A 32") There may be no support 1080p@60Hz through HDMI In this case, the image will be limited. 720p. Check the specifications of your model on the Xiaomi website.

Method 2: Wireless connection via Wi-Fi Direct (Miracast)

Wi-Fi Direct (or Miracast) allows you to wirelessly stream the Samsung A12 screen to a Xiaomi TV, a method that works on most modern TVs, but can suffer from delays when watching videos.

Requirements:

• 📶 Both devices must be connected to the same Wi-Fi network or support Wi-Fi Direct.
• 🔋 Battery charge of the smartphone at least 50% (broadcasting consumes energy).

Instructions for Xiaomi TV:

1. On your TV, go to Settings → Connection and Sharing → Screen Mirroring (or Miracast).
2. Activate the “Waiting for Connection” option.

Instructions for the Samsung A12:

1. Open Settings → Connections → Screen Mirroring (or Smart View)
2. In the list of available devices, select your Xiaomi TV (the name will be in MiTV-XXXX format).
3. Confirm the connection on both devices.

If the TV is not on the list:

• Make sure that Miracast mode is on TV (sometimes it is hidden in Settings → Additional → Wireless Display).
• Restart the router – sometimes a double NAT gets in the way.
• Turn off the VPN on your smartphone (it can block local connections).

💡

If the broadcast is lagging, reduce the screen resolution on your smartphone to 720p in the display settings. This will reduce the load on Wi-Fi.

4. Method 3: Connection through streaming apps (DLNA/Google Cast)

If your Xiaomi TV supports Google Cast (such as models with Google TV or Android TV), you can use applications like Google Home or LocalCast. This method is suitable for broadcasting only media files (video, photos, music), but does not duplicate the screen completely.

Supported formats:

• 🎬 Video: MP4, MKV, AVI (codecs H.264, H.265).
• 📷 Photo Photo: JPEG, PNG, WEBP.
• 🎵 Audio: MP3, AAC, FLAC.

Instructions via Google Home:

1. Install the Google Home app on the Samsung A12.
2. Connect your TV and smartphone to the same Wi-Fi network.
3. In Google Home, click on Screen Translation and select your Xiaomi TV.
4. To stream files, open the Gallery or Files, select media, and click Translate.

For Xiaomi models TV Without Google Cast, use the built-in DLNA-server:

1. On TV: Settings → Applications → Media Server (DLNA) → turn on the option.
2. On your smartphone, install the LocalCast or BubbleUPnP app.
3. In the app, select a file and send it to Xiaomi TV.

5. Method 4: Using USB-C to HDMI + Power (for older TVs)

If your Xiaomi TV doesn’t recognize your smartphone through a standard HDMI-The problem may be a lack of power, in which case an active adapter with external power (for example, an externally powered adapter) will help, WAVLINK USB-C to HDMI + USB-A).

Step-by-step:

1. Connect the adapter to the Samsung A12.
2. Connect the adapter to the TV via HDMI.
3. Connect the adapter to charging via the USB-A port (use the power supply on 5V/2A).
4. On the TV, select the appropriate HDMI source.

This method solves the problem with “No Signal” on TVs that require additional power to recognize devices via HDMI.

⚠️ Warning: Don’t use cheap chargers without certification – they can damage the port USB-C Best option: the original power supply from Samsung (15W) or Anker certified.

6. Method 5: Connect via Smart TV-set-top box (Chromecast, Fire TV Stick)

If none of the above methods worked, the universal solution would be to use an external console, such as Google Chromecast or Xiaomi Mi TV Stick. This is true for older Xiaomi TVs (before 2019) or models without Miracast support.

Advantages:

• 🔄 Stable broadcast without lags (if the console is connected via Ethernet).
• 🎮 Support for games via Google Stadia or Xbox Cloud Gaming.
• 📱 Compatible with any smartphone, including iPhone.

How to connect:

1. Connect the console to HDMI-television-port.
2. Configure it with the Google Home app (for Chromecast) or Mi Home (for Mi TV Stick).
3. On the Samsung A12, open Settings → Connections → Screen Mirroring and select your console.

Chromecast also has a live stream via the “Cast” button in YouTube, Netflix or Google Photos apps.

7. Solving typical connection problems

If you encounter errors, check the following points:

• 🔌 No signal on. HDMI: Try another one. HDMI-port on TV (port) HDMI 3. sometimes reserved for ARC). Turn off the option on the TV HDMI-CEC in settings (Settings) → HDMI → Management HDMI).
• 📶 Wi-Fi Direct does not find the device: Samsung A12 Turn off the power saving mode (Settings) → Caring for the device → Battery → Power saving mode. Reset the network settings on both devices.
• 🔊 No sound when broadcasting: On your smartphone, check that the audio settings are selected HDMI On the TV, make sure the volume is not at zero and select the correct sound source (Settings) → Sound. → Sound source → HDMI).

If the problem persists, try resetting the network settings on your smartphone:

Settings → General settings → Reset → Reset Network settings

💡

To keep Miracast running, turn off the router's "Smart Connect" feature (combining 2.4 GHz and 5 GHz frequencies), which can interfere with local connections between devices.

8 Comparison with alternative solutions

If connecting the Samsung A12 to the Xiaomi TV is still challenging, consider alternatives:

• 🖥️ Laptop as an intermediary: Connect the smartphone to the laptop through USB-C, And the laptop, to the TV. HDMI. Use Windows Projection or QuickTime Player (on Mac) to duplicate the screen.
• 🌐 Cloud Services: Upload the file to Google Drive or Yandex Disk, then open it on your TV via your browser or Files app.
• 🎮 Game consoles: If you have a PlayStation or Xbox, connect your smartphone to the console via USB, The console is to the TV. Some games support streaming. PS Remote Play.

Xiaomi TV owners with Android TV 11+ also have Developer Options mode, which allows them to enable ADB debugging for advanced connection settings.

Settings → About TV → Click 7 times on “Build Number” → Return to Settings → Additional → Developer Settings

FAQ: Frequent questions