Modern users often face the need to output multimedia content from a smartphone to the big screen. Owners of the Xiaomi and Samsung bundle are no exception, and one of the most stable methods remains wired connection. USB-cable allows not only to broadcast video in high resolution, but also to use the phone drive as an external hard drive to play files with the TV.
Unlike wireless technology, physical connection ensures no delays and loss of image quality, which is critical for viewing heavy traffic. 4K-However, the process of setting up has its own nuances, depending on the version of the Android operating system and the TV model. In this article, we will discuss in detail all the stages of pairing, the necessary interface settings and how to solve typical errors.
To start, you’ll need a quality cable that can transmit not only power, but data as well. Many cheap charging-only cables won’t work for signal transmission. Make sure your smartphone supports MTP (Media Transfer Protocol) technology, which is the standard for Android devices.
Required equipment and port preparation
Before you start the connection procedure, it is important to make sure that all components are in good working order, the main element is the cable itself, which must meet the USB 2.0 or higher data standards, and if you use an old cable that came with the button phone, it probably will not be able to transfer files.
Samsung’s current models feature USB 3.0 connectors, which are often blue, and USB 2.0. It’s recommended to use 3.0 ports for multimedia, as they provide faster data read speeds, which is important for high-bitrate video streaming.
Check if USB debugging mode is enabled on your smartphone, although it is not usually required for basic file transfer. However, if you plan to use advanced management features, USB Debugging activation may be necessary. To do this, go to the settings, find About Phone, and click on the build number seven times to unlock the developer menu.
- 🔌 Cable USB-C to USB-A (or USB-C to USB-C new TV).
- 📺 Samsung TV with support for media playback USB.
- 📱 Xiaomi smartphone with a serviceable charging port.
- ⚡ Power grid access to power both devices (unless the TV is powering the port).
Setting up USB mode on Xiaomi smartphone
Once the devices are physically connected, the smartphone screen will likely remain unchanged unless the port mode is changed. By default, Xiaomi can only go into charging mode. You need to manually switch the USB configuration.
Swipe down from the top of the screen to open the notification curtain, and you'll see a "Charge via USB" notification or similar message. Click on it to open the mode selection menu, and here's the key setting for a successful connection.
⚠️ Note: If you do not see a connection notification USB, Try changing the direction of the cable connection or checking the phone connector for dust.
In the list that opens, select File Transfer or MTP. This mode allows the TV to see the phone's file system as an external drive. Photo Transfer (PTP) mode is only suitable for viewing images through specific applications, but not for video.
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Use a cable no longer than 2 meters long. Longer cables can cause voltage drops and unstable data transmission.
After selecting MTP mode, a notification should appear on the TV screen, and if this does not happen, proceed to the next section to adjust the signal source on the Samsung TV itself.
Selecting the signal source on Samsung TV
Samsung TVs don’t always automatically switch to TVs. USB-You may need to manually specify the source of the signal, and then you can take the remote control and find the Source or Input button.
You'll see a list of available inputs on the screen. USB-Depending on the television model, it might be called USB Device, External Devices or just have a flash drive icon.Select the right port that your Xiaomi is connected to.
Sequence of action:
1. Press the Home button on the remote.
2. Go to the Source menu (Source).)
3. Select USB Device (your phone model).
4. Confirm the selection with the Enter button.If a TV supports DLNA over USB, it might suggest running a Smart View app or similar service for deeper integration, but a standard TV media player is enough to simply view files.
☑️ Connection check
Use of Mi Remote and SmartThings
While direct USB connectivity works like a flash drive, software solutions can be used to manage it more advanced. Samsung's SmartThings app allows for closer communication between devices, although it often requires a connection to a single Wi-Fi network to set it up first.
Xiaomi users also have a built-in Mi Remote app that allows them to use their smartphone as a remote for a TV via an infrared port (if it’s in the phone model) or through the network, which is convenient for navigating the TV menu without looking for the original remote.
| Function | Direct USB (MTP) | SmartThings app | DLNA / Cast |
|---|---|---|---|
| Type of connection | Wired | Wireless (Wi-Fi) | Wireless (Wi-Fi) |
| Stability | Tall. | Medium | Depends on the router. |
| Video quality | No compression. | Compressed. | Compressed. |
| Charging the phone | There is. | No. | No. |
Apps are justified if you want to control the TV, not just play files, but for the USB connection task, the TV file manager remains the main tool.
Reproduction of media files through the file manager
After successfully selecting the source of the signal, the TV screen will display the file structure of your smartphone. Navigation is done using the remote. Xiaomi folders usually have standard names: DCIM for photo and video from the camera, MIUI for voice recorder and screenshots, Download for downloaded files.
Select the file you want and press the play button. Samsung's built-in player supports most popular formats like MP4, MKV, AVI. If the video isn't playing, it's possible the TV lacks codecs for a specific audio or video format.
What if the TV doesn’t see the folder?
To switch between tracks or files, use navigation buttons. If you're watching a movie, you can pause it or rewind it using the colored remote buttons or the center wheel.
Possible problems and ways to solve them
Despite the simplicity of the method, users may face a number of challenges: the most common problem is that the phone only charges, but is not defined as a drive, in which case you need to recheck the USB settings in the notification curtain.
Another common error is the message “File is not supported” or “Inappropriate format” which means that the TV’s built-in player cannot decode a specific stream, the solution is to install a third-party player on the TV (if it is a Smart TV) or convert a file on the computer.
⚠️ Warning: Do not turn off the cable while recording to your phone or updating your system to avoid damaging the file system.
If the TV sees folders but they're empty, check the permissions. Some Android system folders are hidden from outside access for security reasons. Use only user directories to transfer media.
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Most connectivity problems are solved by replacing the cable with a high-quality analogue with data transmission support.