How to connect your phone to a Xiaomi 4S 50 inch TV: all ways + error solving

Why Connect Your Phone to Xiaomi TV 4S 50

Xiaomi Mi TV 4S 50 with a resolution of 3840×2160 and support for HDR10 is ideal not only for watching movies, but also for displaying the screen of your smartphone. You can stream videos from YouTube or TikTok to the big screen, play mobile games with a gamepad, show photos to friends or even use TV as a second monitor for work. However, not all users know how to connect devices correctly — especially if it is a model with Android TV and specific settings MIUI.

In this article, we will discuss 5 working ways of connecting (including wireless and wired), point out the typical errors in syncing Xiaomi and iPhone, and give recommendations for optimizing picture and sound. If you have previously encountered problems like “no sound when dubbing the screen” or “the TV does not see the phone”, here you will find solutions.

Important for owners of Xiaomi TV 4S 50: this model does not support Apple AirPlay directly, but there are workarounds – see the section on alternative applications.

1. Wi-Fi Direct (Miracast) connection is the fastest way

Miracast technology (or Wi-Fi Direct in Xiaomi terminology) allows you to duplicate the phone screen on the TV without wires and router. This method works on most smartphones with Android 4.2+ and all models of Xiaomi Mi TV 4S. The main advantage is minimal delays (up to 50 ms), which is critical for gaming or watching videos.

To activate the connection:

• 📺 On the Xiaomi remote TV 4S 50 press Menu → Settings → Connections and sharing → Wi-Fi Direct.
• 📱 On the phone, open Settings. → Connections → Screen transfer (on Xiaomi this can be called Wireless Display or Smart View).
• 🔍 In the list of available devices, select your TV (the name will be in MiTV-XXXX format).
• ✅ Confirm the pairing on both devices.

If the phone screen is not duplicated or the image is “teared”, check:

• 🔋 Charge level of the phone (at <20% Android may limit Wi-Fi performance).
• 📶 Distance between devices (maximum 5 meters without barriers).
• 🔄 Restart your router if you use it as a Wi-Fi Direct bridge.

Make sure that the TV is on Wi-Fi Direct

Turn off the VPN on your phone

Close the background applications (especially messengers)

Update the TV firmware to the latest version-->

⚠️ Note: On some of the firmware Xiaomi TV 4S 50 (e.g., versions 1.4.65 and below) may not have Wi-Fi Direct option in the menu. → On TV. → Updating the system.

Connection via HDMI (for maximum quality)

The HDMI wired method ensures a stable connection without delays and loss of quality – ideal for watching 4K HDR movies or streaming games.

• 📱 adapter USB-C/Micro-USB → HDMI (depending on the phone connector).
• 🖥️ Cable HDMI 2.0 (support 4K@60Hz).
• ⚡ Power supply for adapter (some models require charging connection).

Instructions:

1. Connect the adapter to the phone and the HDMI cable to the HDMI 2 port on the back of the Xiaomi TV 4S 50 (this port supports ARC, which is important for audio transmission).
2. Select the source of the signal on the TV: Input → HDMI 2.
3. On the phone in the notification curtain, select the output mode: Duplicate screen or Expand screen (to use TV as a second monitor).

If the image does not appear:

• 🔄 Try another one. HDMI-port on TV (port) HDMI 1 may not support MHL).
• 🔋 Make sure the adapter gets enough power (plug it into charging).
• 📱 On Xiaomi phones, check the developer’s settings: turn on Debugging by USB and Simulation of the secondary display.

💡

If you connect your iPhone over HDMI, use Apple's official Lightning Digital AV Adapter.Analogues often don't support 4K output.

3.Use of USB-cable (for file transfer and charging)

USB connection does not allow you to duplicate the screen, but it is convenient for viewing photos/video directly from your phone or charging the device while watching. Xiaomi TV 4S 50 supports MP4, MKV, JPG and PNG formats when connected via USB.

How to connect:

1. Connect your phone and TV with a USB-A → USB-C/Micro-USB cable (use USB 3.0 port on TV for fast transmission).
2. On the TV, select the source: Input → USB.
3. On the phone in the notification curtain, select File Transfer Mode (not Charge!).
4. Use the built-in Xiaomi TV file manager to navigate through your phone folders.

Limitations of the method:

• 🚫 No screen duplication, only access to files.
• 📁 Not all video formats are supported (for example, the video formats are not supported, MOV iPhone may not be reproducing).
• ⚡ The phone will slowly discharge if not connected to the charger.

4. Connect via apps (for iPhone and older Android)

If your phone doesn’t support Miracast (like an iPhone or older Android models), you can use third-party apps. Xiaomi TV 4S 50 will suit:

• 📱 ApowerMirror – supports screen duplication with iOS and Android, but requires the installation of the server part on TV.
• 🎮 TeamViewer QuickSupport – for remote control of the phone from the TV (useful for presentations).
• 📺 LocalCast – streaming video/photo over a local network (works without root rights).

Instructions for ApowerMirror:

1. Download the app to your phone and TV (via Google Play on TV or APK).
2. Connect both devices to the same Wi-Fi network.
3. On your phone, launch ApowerMirror and select Connect to TV.
4. On the TV, enter PIN-code displayed in the application.

For iPhone, the alternative will be AirScreen (set on TV via Google Play):

• 🔹 Turn Screen Mirroring on to the iPhone Control Point.
• 🔹 Choose Xiaomi TV device-list.
• 🔹 Confirm the connection on the TV.

⚠️ Note: Apps like ApowerMirror can be up to 200ms latency, making them unsuitable for dynamic gaming.

Wi-Fi (Miracast)

Through HDMI.

Apps like ApowerMirror

USB for files

Another option-->

5. DLNA connection (for media files)

The DLNA protocol allows you to stream videos, music and photos from your phone to your TV without duplicating your screen.This is handy if you just need to play a file rather than display the smartphone interface. Xiaomi TV 4S 50 supports DLNA out of the box.

How to set up:

1. On TV: Settings → Network settings → DLNA (enable option).
2. On Android: Install the BubbleUPnP or LocalCast app. Select a file to play and click Play on... In the device list, select your Xiaomi TV 4S 50.

iPhone

• Use VLC or Infuse.
• In the playback menu, select Renderer → Xiaomi TV.

Advantages of DLNA:

• 🎵 Playlists and background playback are supported.
• 📂 You can stream files from NAS cloud-storage.
• 🔄 No specific application (works with any application) DLNA-server).

Disadvantages:

• 🚫 Not all video formats are supported (for example, the video formats are not supported, MKV s AC3 may not reproduce).
• 📶 Requires a stable connection to Wi-Fi (when you have a <10 Mbps will be lag).

💡

DLNA is the best choice for playing local media files, but is not suitable for screen duplication or games.

6. Solving common problems

Even with the right connection, users of Xiaomi TV 4S 50 face typical errors.

🔇 No sound when connected to HDMI/Miracast

Causes and solutions:

• 🔈 On the TV set External speakers: go to Settings → Sound. → Sound output and select TV-dynamics.
• 📵 The phone turned off the sound in the media: check the volume slider in the notification curtain.
• 🔌 The cable problem HDMI: Try another port or cable with support. ARC.

📵 TV can't see phone over Wi-Fi Direct

What to do:

• 🔄 Reboot both devices.
• 📱 Turn off the modem modem on the phone and VPN.
• 📺 On the TV, reset network settings: Settings → Network settings → Reset.
• 🔧 Update the TV firmware (relevant for versions older than 1.4.70).

🖼️ Image stretched or cropped

Scaling setup:

• On TV: Settings → Screen → Screen Mode → Select by screen size.
• On the phone: in the screen duplication settings, turn off Autoturn.
• For HDMI: Select the TV menu PC-The mode (if you connect as a monitor).

💡

If you connect to Miracast image “brakes”, reduce the screen resolution of the phone to 1080p in the developer settings (minimum width).

FAQ: Frequent questions about connectivity