Broadcasting the screen from the phone to Xiaomi TV through USB: nuances and methods

Connecting your smartphone to Xiaomi TV via USB-cable is one of the most stable ways to stream content without delay, and unlike wireless technologies like Miracast or Google Cast, wired communication guarantees minimal lags and high data rates, which is critical for games, video in the video game. 4K But not everyone knows that it requires not only a physical connection, but also the right setup of both devices.

In this article, we will discuss all current methods of translation through USB, regime MHL (old-model), USB-C DisplayPort Alt Mode (for modern smartphones) and protocol USB OTG And we'll focus on the common mistakes -- why the TV doesn't recognize the phone, how to turn on the debugging. USB Xiaomi, and which cables actually work with specific TV models (e.g. Mi) TV 4S, Mi TV Q1 or Redmi Smart TV).

Important: Connection methods vary depending on the version of Android on the smartphone, firmware MIUI And the hardware support for the TV is external. TV The new model will likely require an additional adapter before 2018, and the original cable will be sufficient for the new models (2020 and later). USB-C to USB-A or USB-C to HDMI.

What Xiaomi TVs support broadcasting USB

Not all Xiaomi TVs can receive a signal from your phone through the phone. USB-The functionality depends on the processor, ports and firmware version. Below is the compatibility table of popular models:

⚠️ Note: Xiaomi TVs with resolution 4K@120Hz (Like Mi. TV Q2 75") cable USB-C to HDMI 2.1 capacity-at least 48 Gbps: Using cheap, uncertified cables can result in image artifacts or no signal at all.

If your model is not listed in the table, check the specifications on the official Xiaomi website or in the TV menu along the way: → On TV. → Technical specifications. Look for lines like "Support" MHL" or "DisplayPort over" USB-C".

Requirements for the smartphone: which Xiaomi phones support the output USB

The ability of the smartphone to broadcast the screen USB It depends on the chip, the version. USB-port MIUI. Here are the key criteria:

• 📱 Processor: phones on Qualcomm Snapdragon 8xx (For example, Xiaomi 12 Pro, Redmi K50 Gaming) supports DisplayPort Alt Mode at the hardware level. Models with MediaTek Helio (e.g. Redmi Note 11) often require adapters.
• 🔌 Type USB-port: Only USB-C (Micro-USB!) with DisplayPort support or MHL. Check the specifications of your model.
• 🤖 Android Version: Starting with Android 10 (MIUI 12+) Support for external displays is built in. Older versions may require manual debugging. USB.
• 🔧 Firmware: On custom firmware (like LineageOS), the function can be disabled. MIUI Global/EEA ensure compatibility.

Critical moment: Xiaomi smartphones with Snapdragon processors 8 Gen 1/2 (for example, Xiaomi 13 Ultra automatically defines a connected TV as an external display, whereas budget models (Redmi) 10A) Requires forced activation of the mode through the engineering menu.

To check the support of your phone:

1. Connect your phone to the TV with a cable.
2. Open the settings → Screen → Advanced settings.
3. If you have an option called “External Display” or “Display Mode” – your device is compatible.

Step-by-step: how to connect your phone to Xiaomi TV via USB

Consider two main scenarios: connecting via DisplayPort Alt Mode (for modern devices) and via the Internet. MHL (old-model).

Method 1: DisplayPort Alt Mode (USB-C to HDMI)

This method works for smartphones with USB-C Xiaomi TVs of 2020 and newer.

1. Prepare the cable: Use a certified cable USB-C to HDMI (For example, Anker PowerExpand or the original from Xiaomi. Cheap uncertified cables may not transmit video.
2. Connect devices: Insert USB-C on the phone, HDMI — to the port of the television (preferably) HDMI 2.0/2.1).
3. Select the source: On the Xiaomi remote TV Click Source (or Input) and select the appropriate HDMI-port.
4. Set up your phone: You'll see a notification on your smartphone screen that says, "External display is connected: 🔄 Duplicate the screen (mirroring). 🖥️ Expand the screen (second desktop).

Method 2: MHL (old-model)

Relevant for Mi TVs TV 4S/4X and smartphones with support MHL (For example, Xiaomi Mi 8 or Mi 9).

1. Buy it. MHL-Adapter: For example, Xiaomi MHL Adapter or universal adapter with power (important: no external power supply) MHL no-one will work!).
2. Connect the adapter: Phone (Micro-USB/USB-C) → MHL-adapter → HDMI-cable → Television MHL-adapter → USB-cable → Charging (for power)
3. Turn it on. MHL on the phone: Go to Settings → Additionally. → Regime. MHL (on some firmware the option is hidden - use the search by settings).
4. Select a TV source: As in method 1, but wait for the download (can take up to 30 seconds).

⚠️ Note: When connecting through MHL The phone will quickly discharge even if the adapter is connected to the charger. 18W).

Set up the phone for correct translation

Even if the physical connection is successful, there may be problems with resolution, sound, or screen orientation.

1. Changes in permission and personnel frequency

By default, the phone can transmit a low-resolution image (e.g, 720p). To change:

1. Connect the phone to the TV.
2. Open the Settings. → Screen. → Advanced settings → Resolution of external display.
3. Select the maximum resolution supported (for example, 1920×1080@60Hz or 3840×2160@30Hz).

Not all Xiaomi TVs support the same. 4K@60Hz down USB. For example, Mi. TV 4X 55" limited 4K@30Hz. Check the characteristics of your model.

Initiation of sound transmission by HDMI

By default, the sound can stay on the phone, so that it can be redirected to the TV.

1. Connect the devices.
2. Open the notification panel on your phone and tap on the notification "External display is connected".
3. Select "Play the sound to the HDMI" or “External speaker".
4. If there is no option, go to Settings. → Sound. → Sound output and select HDMI.

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If the image on the TV is blurry, try in the phone settings to turn off the option "Adaptive brightness" and set a fixed resolution (for example, 1080p supplant).

Typical problems and their solutions

Even with the right connection, you can get errors.

⚠️ Warning: If the phone gets hot after you connect, it’s normal for DisplayPort Alt Mode, but if the temperature is above 50.°C (can be checked in the annex) AIDA64), Turn off the broadcast and let the device cool down.

If none of the solutions worked, try:

1. Update the TV firmware (Settings) → Update of the PO).
2. Reset the settings HDMI on TV (Settings) → Devices → Reset HDMI).
3. Enable the developer mode on the phone and activate the option "Debugging by USB":

Settings → About the phone → MIUI version (shap 7 times)


Settings → Additional → For developers → Debugging by USB

Alternative methods of broadcasting (if) USB doesn't work)

If you connect through USB It is not possible (for example, due to lack of support on your phone or TV), consider alternatives:

• 📶 Miracast (Wi-Fi Direct): Wireless streaming without router. Works for all Xiaomi TV Android TV 9.0+. Included through Settings → Connections → Miracast.
• 🌐 Google Cast: To stream content from apps (YouTube, Netflix) requires a phone and TV connection to the same Wi-Fi network.
• 🔗 DLNA: View media (photos, videos) over a local network. Use applications like BubbleUPnP.
• 🎮 Steam Link: To stream games from PC to TV via phone as an intermediary.

Comparison of methods:

| Method | Delay. | Quality. | Equipment required | Energy consumption |

|--------------|----------|----------|------------------------|-------------------|

| USB (Alt Mode)| Minimum | 4K@60Hz | Cable USB-C to HDMI | Average. |

| Miracast | Medium | 1080p@30Hz| No. | High. |

| Google Cast | Tall. | 1080p | Wi-Fi router | Low. |

| MHL | Minimum | 1080p@60Hz| adapter + feeding | Very high. |

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USB-Connectivity remains the most reliable way for high-resolution games and video, but requires compatible devices and quality cables.

FAQ: Frequent questions about broadcasting through USB