How to connect Samsung Galaxy A51 to Xiaomi TV: step-by-step instructions and ways to compare

Connecting a Samsung Galaxy smartphone A51 Xiaomi offers new opportunities from watching movies on the big screen to showing photos and even games, but not all ways of connecting are equally convenient – the choice depends on the TV model, the firmware version and even the type of content you plan to broadcast. In this article, we will analyze all current methods of synchronization, from the classical to the most important. HDMI-cable to wireless technologies like Miracast and Google Cast, and help avoid common errors.

The unique feature of the combination of devices from different brands (Samsung and Xiaomi) is the possible conflicts of wireless data protocols. For example, not all Xiaomi TVs support Samsung DeX, the proprietary mode for connecting smartphones to monitors, but they have their own technologies, such as Mi Screen Sharing, which can work more stable, we tested each method on current firmware (2026) and collected checklists for quick setup.

HDMI Connection: A Reliable, But Not Always Easy Way

Use of the HDMI-Cables are the most stable method, as they are independent of Wi-Fi speed or wireless protocol compatibility. A51 You'll need an adapter. USB-C → HDMI (Original or certified, because the smartphone does not have a standard HDMI-Important: Not all adapters support full image output HD — Cheap Chinese models may limit the resolution of the 720p.

Connection algorithm:

• 🔌 Connect the adapter to the port USB-C on a smartphone, HDMI-cable to adapter and TV.
• 📺 On the Xiaomi remote, select the signal source (button) SOURCE or INPUT).
• 📱 On the smartphone screen, you will notice that you are connected to an external display. Select the "Duplicate screen" or "Expand desktop" mode (if you need to use the TV as a second monitor).
• ⚙️ If necessary, adjust the resolution in the settings of the smartphone: Settings → Connections → HDMI.

Advantages of the method: minimal latency (important for games), no dependence on Wi-Fi, support for sound through HDMI. Disadvantages: wires limit mobility, and the adapter must be purchased separately (the original from Samsung costs ~ 1500-2000 rubles).

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If the image on the TV is blurry, check the resolution settings in the Settings menu → Screen → HDMI resolution on your smartphone. The optimal value for most Xiaomi TVs is 1920×1080@60Hz

2. Wireless Wi-Fi connection (Miracast and Google Cast)

Wireless technology is convenient for streaming videos, photos or presentations, but requires a stable Wi-Fi connection. Xiaomi TVs support two main protocols:

• Miracast is a universal standard for screen duplication (works on most models, including the Mi TV 4A/4S/5).
• Google Cast – allows you to stream content from supported applications (YouTube, Netflix) without duplication of the entire screen.

To connect via Miracast:

1. On Xiaomi TV, open Settings → Connection and Sharing → Mi Screen Sharing.
2. On the Samsung A51, go to Settings → Connections → Transfer the image to the screen (or Smart View).
3. Select your TV from the list of available devices.
4. Confirm the connection on both devices (entry may be required) PIN-code).

Both devices are connected to the same Wi-Fi network.|The TV is now in Mi Screen Sharing mode.|On the smartphone turned off the energy saving mode|Distance between devices not more than 5 meters-->

If Miracast doesn’t work, try Google Cast:

• 📱 Install the Google Home app on your smartphone (if not available).
• 🔍 In the appendix, click Add → Set up the device → New device and select your TV.
• 🎬 To stream content from supported apps (like YouTube), click the Cast icon (Wi-Fi screen icon) and select the TV.

3. USB connection: limited options but no adapters

Many Xiaomi TVs (such as the Mi TV 4 series and later) support USB connection in MTP (Media Transfer Protocol) mode, which allows you to view photos and videos stored on the phone, but does not duplicate the screen.

Instructions:

1. Connect your smartphone and TV USB-cable (use the port) USB 3.0 on TV for better speed).
2. On the smartphone screen, select the File Transfer (or MTP) connection mode.
3. On the TV, open the Media Player or Files app and select the connected smartphone in the list of devices.

Limitations of the method:

• ❌ No screen duplication, only access to files.
• ❌ Not all video formats are supported by Xiaomi’s built-in player (e.g.,.mkv may not play).
• ❌ The sound is transmitted through the phone’s speakers, not TV.

4.Using Samsung DeX: Desktop on TV

Samsung DeX is a proprietary technology that converts a smartphone into a full desktop with mouse and keyboard support, but not all Xiaomi TVs officially support this mode.

• 🔌 adapter USB-C → HDMI (It is desirable to be original from Samsung).
• 🖱️ Wireless mouse and keyboard (connect via Bluetooth to the smartphone).
• 📺 Supported TV HDMI-CEC (for controlling the Xiaomi remote).

How to run DeX:

1. Connect your smartphone to the TV via an adapter.
2. On the screen of the smartphone will appear a notification – select Samsung DeX.
3. Wait for the desktop to load (it can take up to 30 seconds).
4. Connect the mouse and keyboard to the smartphone via Bluetooth.

Challenges and solutions:

• 🚫 DeX won't start: Update your smartphone firmware to the latest version. Some Xiaomi TVs require manually turning on mode HDMI 2.0 in port settings.
• 🖱️ Mouse/keyboard not working: Connect them directly to your TV (if it supports Bluetooth) rather than your smartphone.
• 🔊 No Sound: In DeX settings, select the output of sound to HDMI.

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Samsung DeX on Xiaomi TVs is unstable due to conflict of HDMI-CEC protocols. If the interface is slowing down, turn off HDMI-CEC function in TV settings (Settings → System → HDMI Management).

5. Alternative methods: DLNA and third-party applications

If standard methods don't work, you can use DLNA or specialized streaming apps, which are less versatile, but sometimes save in difficult cases (for example, with outdated TV firmware).

Method 1: DLNA-smartphone-server

• 📱 Set it on Samsung. A51 Application server, such as BubbleUPnP or Plex.
• 📺 On Xiaomi TV, open the built-in Media Player and select your smartphone in the list DLNA-device.
• 🎥 Start playing the desired file.

Method 2: Applications for mirroring

• 🔄 Popular apps: ApowerMirror, TeamViewer QuickSupport, Screen Mirroring.
• ⚠️ Some apps require a smartphone and TV to be connected to the same Wi-Fi network and may charge for the full version.
• ⚡ For minimum delay, choose apps with 5 GHz Wi-Fi support.

Comparison of alternative methods:

6. Solving common problems

Even with the right setup, errors can occur, and we've collected typical scenarios and ways to fix them:

⚠️ Note: If the Xiaomi TV doesn’t appear in the list of available devices to connect to by Miracast, check if it’s on Developer Mode. → About TV and 7 times click on the item Version MIUI TV. Then, in the developer menu, activate the option Wireless debugging.

Problem 1: No image when connected via HDMI

• 🔍 Check the cable and adapter – try another one USB-C → HDMI.
• 🔄 Reboot both devices.
• ⚙️ On a smartphone in settings HDMI Select the manual indication of permission (1080p auto).

Problem 2: Sound delay when wirelessly connected

• 📶 Connect to 5 GHz network (if you use 2.4 GHz).
• 🔊 In the TV sound settings, turn off the sound processing (Settings) → Sound. → Sound effects → Off.).
• 📱 On the smartphone in the developer settings (Settings) → The phone. → Assembly number - 7 taps) turn off the Absolute volume.

⚠️ Attention: On the TVs Xiaomi Mi TV 4A (The 2018-2019 models may not support Miracast due to hardware limitations, in which case use Google Cast or other devices. HDMI.

Problem 3: Samsung DeX is not running

• 🔄 Update your smartphone firmware to the latest version (the minimum required version for the device) A51 — One UI 3.1).
• 🔌 Try another one. HDMI-cable (preferably with support) HDMI 2.0).
• ⚙️ Turn off the TV settings. HDMI-CEC (Settings → System system → Management HDMI).

7. Comparison of connection methods: which one to choose?

The choice of method depends on your tasks. Below is a comparison table with recommendations:

Critical recommendation: If you need to stream high-resolution video (e.g, 4K HDR), Use only HDMI-Wireless methods (Miracast, Google Cast) are limited to Full resolution. HD They may suddenly terminate the connection when the Wi-Fi signal is weak.

FAQ: Answers to Frequent Questions