How to connect Xiaomi phone to Supra TV via USB-cable: full instruction 2026

Connecting Xiaomi smartphone to Supra TV via USB-cable seems like a simple task, but in practice, users face a lot of nuances, from incompatibility of connectors to lack of response to connection. In this article, we will examine all the ways of connection, including the unique features of the protocols. MTP/PTP for Supra TVs 2019–2026 And why is it sometimes called a “charger” rather than a storage device.

You will find out what cables and adapters are required for models with a USB Type-C (e.g. Xiaomi 13 Pro) and Micro-USB (older models like Redmi) 4A), how to turn on debugging USB, If the TV can't see files, and what to do if the device is not supported on the screen, we'll also analyze alternative methods of data transmission, from Wi-Fi Direct to Miracast, in case if you have a problem with the device. USB-Connection will be impossible.

Important: the instruction is relevant for Supra TVs based on Android TV (series STV-LC, STV-UL) Linux (budget models), as well as for Xiaomi smartphones with MIUI 12-14 If your TV is running on proprietary firmware (e.g. Supra) STV-24LE2000), Some functions may not be available – we will warn you about this separately.

What cables and adapters are needed to connect

The first mistake users make is to use a charging cable instead of this one. USB-The cables support file transfer. This is what you'll need depending on the model:

• 📱 Xiaomi with Type-C (11T, 12, 13 series, Redmi Note 10/11): cable USB-C — USB-A (For example, original from the kit or certified Anker).
• 📱 Xiaomi with Micro-USB (Redmi) 4/5, Mi A1): micro-USB cable — USB-A. Pay attention to the labeling: you need wires with support USB 2.0 Data (usually indicated on the packaging).
• 📺 Supra TV with USB-A (Most models: connect directly to the port on the back.
• 📺 Supra with USB-C (rarely, for example, Supra STV-UL55V7800): You'll need an adapter. USB-A (female) — USB-C (male).

If your Supra TV is only available HDMI or USB 3.0 (blue connector), but does not recognize the phone, try it:

1. Connect the cable to the black USB 2.0 (if any).
2. Use a hub with external power (for example, UGREEN USB 3.0 Hub), as some Supra models do not supply enough current to ports.

Attention! Cables longer than 1.5 meters often lose the data signal. If the phone is charging but not defined as a drive, try a shorter wire.

Setup Xiaomi phone before connecting

By default, Xiaomi smartphones block data transmission by USB because of security policy MIUI. To get your Supra TV to see files, follow these steps:

1. Connect your phone to the TV with a cable.
2. On the screen of the smartphone will appear a notification "Charge via USB."
3. Select File Transfer Mode (MTP) or PTP (Do not select "Charge only" or "Mid only»!

If no notice appears:

1. Open Settings → Connections and Sharing → USB.
2. Enable the "Debugging by" option USB» (You will need to activate the Developer Mode by pressing the Version 7 times. MIUI under the heading “On the telephone»).
3. In the section «USB-Manually select the configuration MTP.

On some Supra models, for example, STV-LC32T7200) regime MTP It's not supported:

• 🔄 Try it. PTP (photo/video only).
• 📁 Transfer files to SD-A map and put it in the TV.
• 🌐 Use alternative methods (more on this below).

Critical error: if after connecting the phone writes "Device" USB Unidentifiable, so the Supra TV doesn't support the protocol MTP. The solution is to update the TV firmware or use it FTP-server (section 5).

Connecting to a Supra TV: Step-by-step instructions

When the cable and phone are ready, do the following on the TV:

1. Turn on the Supra TV and wait for the load.
2. Connect the cable to USB-Port (preferably on the back panel - they are more powerful).
3. Press the button on the remote. SOURCE (or INPUT) and choose USB.
4. If a menu with a choice of device appears, highlight your phone (may be displayed as «MIUI» or Android»).

The following steps depend on the TV:

If the Supra TV is not responding to the connection:

• 🔌 Try another one. USB-Port (only on some models) USB1 data-support).
• 🔄 Restart your phone and TV.
• 📵 Turn off Bluetooth on your phone – it may conflict with your phone USB.

💡

If the Supra TV can’t see files, but the phone is charging, try connecting the cable through the phone. USB-It's an externally powered hub, and it solves the power shortages in the TV ports.

Solving common problems

Even with the right connection, errors can occur, and here are the most common ways to fix them:

1.The phone is charged but not defined as a drive

Reasons:

• 🔋 Charging cable is used without data support.
• 📱 No mode is selected on the phone. MTP/PTP.
• 📺 USB-Supra TV port only works on charging (for example, on models) STV-LC24T7100).

Solution: check the cable on another device (PC, laptop) if it's transferring files, the problem is the TV.

2.The TV sees the phone but doesn't open files

This is typical of Linux Supra TVs, which only support:

• 📷 Photo:.jpg,.png (max resolution) 4K).
• 🎬 Video:.mp4,.mkv (codecs) H.264, H.265).
• 🎵 Music:.mp3,.aac.

For documents (.pdf,.docx) use:

• 🌍 Cloud services (Mi Cloud, Google Drive).
• 📡 FTP-server on the phone (application) FX File Explorer).

Error “Device” USB unrecognized»

This error occurs if:

• 🔌 Supra TV does not support MTP (relevant for models until 2018).
• 📱 The phone has enabled the developer mode, but the option “Debugging by” is not selected. USB».
• 🛠️ Port port USB The TV is damaged (check on other devices).

Solution: Update the TV firmware through Settings → Support → Update of the PO.

Attention! ⚠️ If after connecting the Xiaomi phone starts to warm up, immediately turn it off. USB, Try another cable or port that could damage the battery.

Alternative ways to connect (if USB is not working)

If you connect through USB It is impossible to use one of these methods:

1. Wi-Fi Direct (direct transmission over the network)

Suitable for Supra TVs with Android TV:

1. On TV: Settings → Network → Wi-Fi Direct.
2. On the phone: Settings → Wi-Fi → Wi-Fi Direct and select your TV.
3. Use the File Manager app+ file transfer.

2. Miracast (wireless screen)

For screen duplication:

1. On TV: Turn Miracast on in Settings → Screen. → Wireless display.
2. On the phone: Settings → Connections → Wireless display and select Supra.

Limit: Delay of up to 2 seconds is not suitable for gaming.

3. FTP-phone-side

If the Supra TV is connected to the same Wi-Fi network:

1. Put it on the phone. FX File Explorer.
2. Launch it. FTP-server.
3. On the TV, open the browser and enter the view address. ftp://192.168.x.x:2221.

4. Cloud services

For documents and photos:

• 📁 Upload files to Mi Cloud or Google Drive.
• 📺 On your TV, open your browser or Google Photos app (if you have one).

💡

If the Supra TV does not support MTP, The most reliable way to transfer files — FTP-server or Wi-Fi Direct. USB In this case, it is only suitable for charging.

Compatibility of Xiaomi and Supra models

Not all phone and TV combinations work equally well, and the table below shows the combinations that are tested:

Xiaomi models older than 2018 (e.g. Mi 8, Redmi 6) may require:

• 🔄 Update MIUI last-minute.
• 📱 Enable Developer Mode and Select USB-configuration → MTP.

Attention! ⚠️ On Supra TVs with resolution 4K (for example, STV-UL55V7800) resolution 1080p It will automatically scale, which can lead to loss of quality. HDMI-adapter.

FAQ: Frequent questions