Modern Smart TVs TV They have powerful multimedia stuffing, but built-in memory or complex navigation through files often cause difficulties. USB-But unlike computers, TVs don't always correctly recognize mobile devices in file transfer mode, perceiving them as charging or ignoring them altogether.
In this article, we will discuss the technical details of the interaction of the Android operating system (MIUI shell or HyperOS) with television receivers, you will learn how cable connection is really effective, how to properly configure USB modes and what alternative methods will achieve better image quality without delay.
Technical limitations of direct USB connection
Before you look for a cable, it's important to understand the fundamental difference in device architecture. A smartphone and a TV are two independent computing devices, each with its own file system. When you wire them together, the TV tries to read the smartphone as an external drive, but the protocols may not match.
Most TVs support FAT32 or NTFS file systems, while the phone’s internal memory is formatted into Android-specific formats that can only be accessed through special MTP drivers or protocols. If your TV doesn’t have built-in MTP support, it simply won’t see files, even if the physical connection is installed.
⚠️ Attention: Not all USB-Often, connectors labeled "Service" or having lower current strength are used only for diagnostics or charging and do not transmit a video signal or files.
There is also a power limit: a USB port on a TV usually gives current up to 0.5-1 Ampere. If a Xiaomi smartphone is discharged, it can start consuming energy, but it will not go into data mode, since this requires user authorization on the lock screen.
Equipment and cable preparation required
The quality of the cable used is critical to a successful connection. Cheap wires bundled with low-cost power banks often have only two veins to power and no data lines. You need a full-fledged USB Type-C or Micro-USB cable with data support.
You should also pay attention to the version. USB-The blue color inside the connector indicates the standard. USB 3.0, which provides faster read speed of heavy video files in resolution 4K. The black connectors are USB 2.0, which may not cope with streaming high-bitrate video, causing twitching images.
- 🔌 Use the original cable from the set of the smartphone or certified analogue length of no more than 1.5 meters.
- 📺 Connect to the port with the marking "HDD" or "USB 3.0 for better compatibility with media.
- 📱 Make sure that the smartphone screen is unlocked at the time of connection to confirm the mode of operation.
Setting up the USB mode on the Xiaomi smartphone
By default, when you connect to an external power source or PC, Xiaomi smartphone goes to "Charge Only" mode. To see the files, you need to manually switch this setting. After connecting with the cable, lower the notification curtain and find the message "Charge via USB".
Click on this notification to open the mode selection menu. To transfer files, select File Transfer (or MTP). In some cases, if the TV is old, you may need a PTP mode that emulates the digital camera connection, but it won't allow you to view videos or documents.
☑️ Checking connection settings
Shell interface MIUI It may hide the re-notification if you have previously ticked "Do not show again." → Connected devices → Settings USB. You can force a preferred mode of use here. USB-linkage.
⚠️ Note: When selecting File Transfer mode, make sure that your smartphone does not run heavy apps that can block access to the file system, causing reading errors on your TV.
Instructions for connecting and navigating in the TV menu
Once you have the right mode on your smartphone, take the remote control. You need to open the application to work with external media. On Samsung TVs, it's called Media Player or simply Media, on LG it's Photo & Video, on Sony it's a built-in file manager.
Your smartphone should appear on the list of available devices, often displayed as "Mi Phone," "Redmi Note," or an abstract "Android." When you log in, you'll see the folder structure. Photos are usually in the DCIM → Camera folder, and uploaded videos are in the Download or MIUI → video folder.
| Type of content | Standard folder on Xiaomi | Possible challenges |
|---|---|---|
| Photo and video from the camera | /DCIM/Camera | TV does not see the HEIC format (photo from iPhone or some Android modes) |
| Uploaded files | /Download | Files can be hidden in the back of folders |
| Screenshots | /Pictures/Screenshots | Low resolution for the large screen |
| Video from the Gallery | /MIUI/video | Unsupported audio codec (no sound) |
If the TV is not supported or the file is corrupt, it's likely a video codec problem. Built-in TV players often don't play the modern compression formats that a smartphone can easily open.
What if the TV sees folders but the files are empty?
Compatibility and file format issues
Even with a successful connection, you may find that the TV sees a file but refuses to open it.This is due to the lack of necessary codecs in the TV's software. Xiaomi smartphones often use efficient but demanding codecs to save space.
The most common problems are with audio tracks: video can be played but without sound if the TV does not support DTS or AC3 format. In such cases, the only solution is to convert the file to the computer or use third-party software.
- 🎬 Video format MKV Subtitles may not display text if the TV does not support subtitles.
- 📷 Photos in format RAW or HEIF You may not be able to open on older TV models.
- 🎵 High-resolution audio files (FLAC, DSD) Requires support for Hi-Res audio from the TV.
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If the TV doesn’t read the video format, try installing a translater app (like BubbleUPnP) on your smartphone that will recode the stream on the fly, although this is only possible when connected via Wi-Fi, not USB.
Alternative ways of broadcasting the screen
Given the complexity of cables and formats, wireless technology is often a more rational solution. Xiaomi smartphones have a built-in "Cast" function that works on the Miracast protocol, which allows you to duplicate the phone screen on the TV without wires.
To activate, open the control center (curtain on the top right) and press the "Translation" button. The TV must support Miracast technology or have built-in Wi-Fi Direct. Image quality will depend on the speed of the Wi-Fi network, but format compatibility is guaranteed, since the finished picture is broadcast.
Another option is to use USB-C to HDMI adapters. If your Xiaomi smartphone supports video output (usually flagship models with Snapdragon 800 series processors), a special adapter will allow you to output the digital signal directly, in which case the phone will be identified as an external source of the HDMI signal, and there will be no problems with the codecs.
⚠️ Note: Redmi budget models and POCO Often they do not have video support. USB-C. Use of cheap adapters USB-HDMI This device will not produce results because the port does not physically transmit the video signal.
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Wireless broadcasting (Miracast/Chromecast) It is often more convenient and stable to view media library than trying to make friends with the file systems of the phone and TV through the Internet. USB-cable.