Owners of Xiaomi and Redmi smartphones often face the need to play media content on the big screen. USB-Connection remains one of the most stable ways to transmit data, although it requires proper configuration. Unlike wireless technology, cable ensures that there are no delays and loss of image quality.
But just wired devices together is not enough, because MIUI and HyperOS have their own external peripheral features, and you'll need not only a physical connection, but also a good setup of communication protocols to successfully stream video.
In this guide, we’ll take a look at all the nuances of connectivity, from choosing the right cable to activating hidden debugging functions, and learn why a TV might not see a phone and how to fix it in a matter of minutes.
Equipment and preparation for connection
The first step is to check your hardware compatibility. Not all TVs have a USB-A port that can read data from mobile devices. Most current Samsung, LG and Sony models support reading FAT32 and NTFS file systems, which is critical for Android smartphones.
The quality of the cable is crucial. Cheap wires are often just for charging and don't have internal lines to transmit data, and you need a cable that supports MTP (Media Transfer Protocol) or drive mode.
- 🔌 The original cable. USB Type-C or Micro-USB from Xiaomi.
- 📺 Port TV USB, Supports reading files (usually marked as "HDD" or").
- 💾 File Manager on a smartphone (standard "Conductor" or Mi File Manager).
- ⚡ Power adapter (optional if the TV does not give enough power).
⚠️ Warning: Using damaged or too long cables (more than 2 meters) without an active signal amplifier may cause unstable operation or complete lack of connection.
Make sure your TV has updated software. Manufacturers often add support for new codecs and protocols through system updates. Check the firmware version in the Settings menu → Support → Software Update.
Setting up USB mode on Xiaomi smartphone
Once you physically connect your smartphone to your TV, the Android operating system defaults to charging mode, which is standard behavior for data security. USB-interface.
Immediately after you connect, lower the notification curtain on your phone screen, and you'll see the system message "Charge via USB" or "Click for other actions." Stick it to open the mode selection menu.
In the list that opens, select File Transfer (MTP), which allows the TV to read folder structure and run video files directly from the phone's memory. Photo Transfer (PTP) mode is only suitable for viewing images on some TV models.
☑️ Checking settings USB
If there is no file transfer point in the list of available modes, it is possible that the USB drivers are not active or the cable is faulty. Try reconnecting the cable to another port on the TV, preferably one that is marked USB 2.0 or USB 3.0, but is not marked as service.
Use of the USB-debugging for enhanced capabilities
To interact more deeply with a TV system or Android TV emulators, it may be necessary to enable developer mode, which allows for USB debugging, which is useful for advanced users running specialized translation applications.
To activate this mode, go to Settings → Find the line "Version." MIUI" or "OS version" and quickly click on it 7 times in a row before the message "You became a developer" appears".
Then, in the Additional → For developers menu, find the USB Debugging and activate it. When you first connect to a new device (if the TV has smart functions and emulates the host), a request for RSA key confirmation will appear on the phone screen.
Why do you need to debug USB while watching videos?
Be careful when enabling debugging. Do not connect your phone to public charging stations with this mode activated, as this creates a potential vulnerability to data.
Specifics of working with the MIUI and HyperOS shell
Xiaomi’s proprietary shell has an aggressive energy-saving system that can interrupt the connection when the screen is turned off. For video to play consistently, you need to configure exceptions for media services.
Go to the battery settings and find the app you plan to run the video through (e.g, VLC, MX Player or standard video player. Set the power saving mode to the No Limits position. This will prevent the shutdown. USB-port.
| Function | Standard Android | Xiaomi (MIUI/HyperOS) | Impact on USB |
|---|---|---|---|
| Default mode | MTP/ Charging | Just charging. | Manual selection required |
| Energy conservation | Moderate. | Aggressive. | Could cut the link. |
| Drivers. | Systemic | Modified | High compatibility |
| Notifications | Standard. | Extended. | Important to choose a regime |
Also worth checking is the permissions for the file manager. In MIUI, the application must have permission to "Map on top of other windows" and access to all files in order to correctly transfer video metadata to the TV.
Choosing a video player for broadcasting via USB
Standard TVs may not support all video formats that your Xiaomi easily plays, and in such cases it is better to use the phone as a signal source, and the TV as a monitor, or stream the file through a compatible player.
It is recommended to install a universal player on the smartphone, such as VLC for Android or MX Player. These applications have their own codecs and can transcode the stream on the fly if the TV does not understand the original file format.
- 🎬 VLC Player: Supports almost all formats, has a built-in network interface.
- ▶️ MX Player: Excellent hardware decoding, convenient control gestures.
- 📹 Nova Video Player: Specializes in building libraries and working with external drives.
⚠️ Note: When reproducing heavy 4K-High bitrate files through USB It is possible to slow down if the port is used. USB 2.0. 4K HDR Content is preferred over ports USB 3.0 (blue).
Some players allow you to display the image not through the TV file system, but through the protocol. DLNA/UPnP, if both devices are connected to the same Wi-Fi network, but in the context of the USB-We rely on direct reading of files by TV.
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If the video comes with jerks, try in the player settings on the phone to enable hardware acceleration or reduce the resolution of the output signal, if such an option is available in mode. HDMI/USB-broadcast.
Solving Common Compatibility Problems
A common problem is that the TV sees the phone as a charger, but it doesn't display files. This could be due to the file system. Android by default uses F2FS or encryption, which the TV can't read without unlocking.
Make sure the phone screen is unlocked at the time of connection and mode selection MTP. If the phone has a password, the TV will not get access to the file system before entering. PIN-fingerprint.
Another reason could be the formatting of internal memory: Modern smartphones do not allow you to change the internal memory file system to FAT32, in which case the TV can only see the DCIM folder or Download.
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The key factor of success is unlocking the phone screen at the time of connection and choosing the right mode "File Transfer" in the notification curtain.
If nothing works, try restarting both devices with the cable turned off. Sometimes Android Media Server services on your phone or smart TV services freeze and require a restart.
Alternative methods and output via Type-C
Owners of Xiaomi flagship models (Mi series, Xiaomi 11/12/13/14) with USB 3.1/3.2 Type-C port can use an alternative method - video output via DisplayPort Alt Mode.
This will require a special Type-C to HDMI adapter, in which case the phone is defined by the TV as a full source of video (like a computer), and the TV screen displays an exact copy of the image from the smartphone.
This method is radically different from transferring files via USB. It requires support for video output technology from the smartphone processor. Budget models Redmi and Poco often do not support video output via USB-C, limited only to data transfer.