Xiaomi screen streaming to a TV via USB: the full guide

Many owners of Xiaomi and Redmi smartphones are wondering whether it is possible to display an image on the big screen using only the same devices. USB-The cable is always on hand, reliable, and does not require Wi-Fi settings, which often cuts down on image quality. However, there is a fundamental misconception about how data transfer works.

The thing is, the classic USB-The port on mid- and low-end smartphones, which include most Xiaomi models, does not support the transmission of digital video directly. MTP (Media Transfer Protocol and PTP (Picture Transfer Protocol, which is activated by default, is designed solely for sharing files or photos, but not for streaming a video stream in real time. You need to be clear about this technical feature so you don’t waste time trying to find the hidden button in standard settings.

However, there are workarounds and specific scenarios where cable connectivity is still possible, whether it’s supporting USB-C Alt Mode in flagship models or using special software solutions that turn a smartphone into a server and a TV into a client. In this article, we’ll take a look at all the possible implementations of connectivity, from simple methods to sophisticated technical solutions for advanced users.

Technical limitations USB-Connections on Xiaomi smartphones

Before we get to practical action, it's important to understand the "iron" part of the question. USB-The cable that comes with the Redmi Note or Poco X contains only contacts for data transmission and power. HD or 4K) It requires support for an alternative port mode known as DisplayPort Alt Mode, which allows you to redirect the video stream directly to the external display, bypassing the processor compression processing.

The problem is that Xiaomi engineers, like many other manufacturers, save on controllers in budget and mid-budget devices. Even if the USB Type-C port looks the same, internal wiring of contacts may not support video output. Trying to connect such a smartphone to a TV through a simple USB-C HDMI adapter will most often lead to zero result: the phone screen will remain active, and the TV will write “No signal”.

⚠️ Note: Don’t buy cheap adapters USB-C on HDMI For lower-middle-segment models (e.g. Redmi Note series before 10th version or Mi A line), 95% of the time, they won’t work because the phone port doesn’t physically know how to transmit video.

There is also a software limitation: the Android operating system in the shell of MIUI or HyperOS blocks direct video output via USB by default unless certified hardware or a special application is detected. The standard mechanism of Charging Only or Transferring Files does not imply buffering video frames for an external monitor. Therefore, searching for the USB Translation feature in the standard Connections menu often turns out to be futile.

Checking the video output support on your device

To avoid guessing and spending money on unnecessary accessories, the first step should be a thorough check of the technical specifications of your particular device. Information about support for DisplayPort or MHL (Mobile High-Definition Link) is rarely indicated on the box, but it can be found in the specifications on the official website or in authoritative technical databases. If the characteristics of the USB port are indicated only “USB 2.0” or “USB 3.0” without the label “Video Out”, they are slim chances.

One of the surest ways to test a smartphone is to use specialized diagnostic apps from Google Play, programs like USB Device Info or AIDA64 can read information from the controller and tell you what modes the port supports, you need to run such an application, go to the USB section and search for the "Alternate Modes" line. If it is empty or it says only "Charging", then direct output of video is impossible.

Xiaomi smartphones built on Snapdragon 800 series chipsets (e.g. 865, 870, 8 Gen 1 and above) often have built-in video output support. At the same time, popular MediaTek Helio or Snapdragon 600 series processors are mostly devoid of this feature at the hardware level, a critical point for Poco and Redmi owners.

Use of the regime USB-modem DLNA-server

If direct video output is not possible, software methods that use video are used to help. USB-This method allows you to broadcast media content (photos, video files, music) from your phone to your TV, using the cable as a data channel. DLNA Smart Share, and the smartphone acted as a server.

The key is this: you connect your phone to USB-It's a port of the TV (if it supports reading files from external devices) or it's using a cable to connect devices through special applications. But a more efficient way is to organize a tethering connection. USB to a computer or router, but in the context of a TV, the bundle “Phone as a drive” or “Phone as a media server” is more often used».

Consider the algorithm of actions for transferring files through USB-accumulator:

• 📱 Connect Xiaomi smartphone to TV via USB-cable (if the TV has a cable) USB-file-port).
• 💾 On the phone screen, select the mode of operation. USB: «File transfer» (MTP) or «USB-accumulator».
• 📺 On the TV via the remote go to the signal sources menu and select your smartphone in the list of devices.
• 🎬 Open the built-in media player TV and find the folder with the video (usually) DCIM/Camera download).

This is not a full screen broadcast (Screen Mirroring) and you can't run YouTube or a game on your phone and see a picture on TV in real time, it's just a way to play a pre-loaded file. This is not a good way to view online content via cable, because it requires a file in the device's memory.

Broadcasting through USB-Modem and Wi-Fi Direct (combined method)

There is an interesting hybrid method that is often confused with direct. USB-It's a connection, but it allows you to get a stable picture without the latency that you would normally have with Wi-Fi. USB-modem between phone and TV (if TV supports such a function that is rare) or, more realistically, use USB-cable to provide a stable connection between the phone and the router to which the TV is connected.

However, the most working scenario for Xiaomi owners without HDMI-out support is the use of the “Cast” function in conjunction with the X-ray. USB-It's a power and stability cable, but the video stream itself is Miracast protocol, and to minimize the delay, you can try using the same thing. USB-Ethernet adapters for your phone (if available) OTG Support), creating a wired Internet connection that will be used to transmit video stream to Smart TV.

The standard Translation function in MIUI is activated as follows:

Settings → Connected devices → Broadcast

Or through the control panel:

Swipe down → Icon “Translation” (Cast)

Once activated, the phone will start searching for available devices. TV or any other smart or TV Miracast is on the same network (even if the network is created through a network). USB-The modem on another device, you can see it in the list. Click on the name of the TV, and the image from the smartphone screen will appear on the large display.

⚠️ Note: When using wireless broadcasting (even through the USB-Network modem) phone battery drains very quickly. Keep the device connected to charge while watching movies or games.

Specialized applications for broadcasting over USB

For those who want to achieve a wired connection without using Wi-Fi protocols, there are applications that use debugging. USB (USB Debugging. One of the most popular solutions is ApowerMirror or Scrcpy (for advanced users), which allows you to display the screen of your phone on your computer and then stream the image from your computer to your TV through your computer. HDMI.

To use this method, you'll need a PC or laptop as an intermediate. First, you connect Xiaomi to your computer through a computer. USB, You activate the debugging and you run the client program. The image appears on the PC monitor. Then you just plug the computer into the TV through the computer. HDMI-It's the only way to get a good picture over the wire if your phone doesn't support native video output.

Instructions for activating debugging for such programs:

• 🛠️ Go to Settings. → The phone.
• 🔢 Click 7 times in a row on the item "Version" MIUI» Or “version of OS” to become a developer.
• 📲 Go to Settings. → Advanced settings → For developers.
• ✅ Activate the "Debugging by" switch USB».

Once you connect the debugging cable, you'll see a request for debugging permission from that computer on the phone screen, and you'll need to tick "Always Allow" and click "OK." Now the app can capture the video stream with minimal latency using bandwidth. USB-cable.

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To minimize delay in games via Scrcpy, use the start command with the setting --bit-rate 100M --max-fps 60, This will allow you to transfer a high-quality picture almost without lags.

Comparison of Connection Methods and Problem Solving

The right way to connect depends on your goals: whether you want to just show photos to your family, play a mobile game on the big screen or watch movies from your phone’s memory. Below is a table that will help you compare the methods you have examined and choose the best one for your situation.

If you encounter problems such as a black screen, intermittent connection or lack of sound, check out a few key points: First, make sure the cable is working and supports data transfer, not just charging. Cheap "charging-only" cables often cause failures. Second, check the version of drivers on your PC if you use an intermediate link.

If there is sound but no image, try changing the screen resolution in the developer settings. Sometimes the TV can't decode the resolution that the phone gives out too high, and it's also worth turning off the power saving for the broadcast application, since MIUI aggressively "kills" background processes, which can interrupt the video stream.

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The most high-quality and stable way for phones without a video output is a bundle of Scrcpy + PC + HDMI, and for Xiaomi flagships - a direct USB-C to HDMI adapter.

Frequently Asked Questions (FAQ)