Modern smartphones like Xiaomi Redmi 9T, They've become so powerful that they've become full-fledged multimedia centers, and it's often necessary to take the image from the big screen to the bigger one, the TV. Owners of Android devices often look for ways to do it through the Internet. USB-We think it's the most stable and efficient way to transmit data, but it's important to be clear right away: Directly transmitting video through the Internet. USB-cable (as through) HDMI) It is not always possible and depends on the hardware limitations of the model.
In the case of the Redmi 9T, the situation has its technical nuances that need to be understood before setting up.This smartphone is equipped with a Snapdragon 662 processor, which unfortunately does not support video output through the Type-C port in DisplayPort Alt Mode mode. This means that simply inserting a USB-to-HDMI cable into the charging socket will not get a picture on the TV screen. However, the USB port remains a highly useful tool for other use cases, such as expanding memory or creating an access point.
This guide will take a detailed look at all possible options for your smartphone to interact with your TV, including those where you can find your smartphone. USB-And we're going to look at external storage, the setup. USB-modem TV And alternative wireless methods that can be the perfect replacement, and understanding these mechanisms will allow you to maximize the potential of your gadget.
Technical limitations USB-port 9T
The first thing that an advanced user encounters when trying to connect the Xiaomi Redmi 9T to a TV directly is the lack of a video output. The USB Type-C port on board this device complies with the USB 2.0 standard. It is a basic protocol that does a great job of transferring files, charging and connecting peripherals, but does not have enough bandwidth to transmit uncompressed high-definition video stream.
Many people mistakenly believe that the presence of an oval Type-C connector automatically guarantees video support. In practice, only flagship models and mid-plus devices (usually with Snapdragon 800-series processors or analogues from MediaTek with support for MHL) can broadcast the image over the wire. In Redmi 9T, this functionality is software and hardware disabled by the manufacturer to reduce the cost of the final product.
⚠️ Warning: Don't try cheap USB-to-HDMI adapters bought on marketplaces. They won't work with Redmi 9T, Because the phone can't physically send a video signal through that port, you're at risk of damaging the power controller or connector.
However, the port supports OTG (On-The-Go) technology, which allows you to connect external devices to your phone: flash drives, keyboards, mice, and even Ethernet adapters, which opens up a number of possibilities for interaction with your TV, if you think of USB as a data channel rather than a video output.
- 🔌 Support for the standard USB 2.0 provides data transfer speeds of up to 480 Mbps, which is enough for video 1080p when reproducing from the storage.
- 🔋 The port is able to provide current for charging connected devices, but in mode OTG Smartphone energy consumption is increasing.
- 📁 The file system must be compatible (FAT32, exFAT, NTFS) Reading correctly by the TV or by the phone.
Use of the USB-media-replicator
One of the most reliable ways to connect content with Redmi 9T TV-to-TV USB-The interface is the use of a flash drive, and you can copy movies, photos, or music from your phone to your computer. USB-flash drive (using an adapter) OTG) And then play them on the big screen, and this is a method that doesn't require the Internet, and it provides consistent image quality without delay.
To implement this method, you will need the smartphone itself, USB-flash drive OTG-Adapter (if the flash drive does not have a Type-C connector). First connect the drive to Xiaomi Redmi 9T. The system will automatically detect the external device and prompt you to open the file manager. If no automatic opening occurs, go to the Explorer app and find the partition. USB.
☑️ Preparation of media files
After copying files, disable the flash drive from your phone. It is important to do it correctly: in the notification curtain, click on the icon USB-Select Safe Extract, which will prevent data corruption, and then plug the drive directly into the storage. USB-port of your TV.
Modern Smart TV They have built-in media players that support most popular codecs. Find the signal source in the TV menu. USB Or run the Media/Video Player app. Select your file and enjoy watching. If the TV doesn't see the file, maybe it was encrypted on the phone or has it. DRM-defense.
| Parameter | Recommended value | Note |
|---|---|---|
| File system | exFAT or NTFS | FAT32 does not support >4GB files |
| Video format | MP4 (H.264) | The greatest compatibility |
| Permission | 1920x1080 (Full HD) | Optimal for the Redmi 9T |
| Bitreit | up to 20 Mbps | To prevent lags |
Setting up USB-modem TV
There is another scenario where USB-The cable becomes a bridge between Redmi 9T And the TV, the wired Internet, if you're smart. TV Does not support Wi-Fi or signal is too weak, you can use your phone as a USB-In this case, the Internet on the TV will be distributed through the mobile network. 4G/LTE Your smartphone, transmitted by cable.
To do this, connect your phone to your TV with a quality USB Type-C cable. The TV should have a USB port marked as SVC (Service) or just a regular port that supports the network. After a physical connection, pick up your smartphone and go to settings.
In the Xiaomi menu, the path will be as follows: open Settings, select Connect and Sharing (or Additional Features in older versions). MIUI). Find the section USB-Activate the switch. If the switch is inactive, check the cable, it should support data transfer, not just charging.
What if the TV can’t see the network via USB?
When you turn on the TV, you have to have a new wired interface in the network settings. IP-If that doesn't happen, try using the TV settings to select the type of wired network connection and run the diagnostics, which is often faster and more stable than Wi-Fi, which is critical for streaming in the network. 4K.
- 📶 The connection speed is limited only by the operator’s mobile network and the quality of the cable.
- 🔋 In Redmi modem modem 9T It can get very hot, watch the temperature of the body.
- 📉 Traffic is consumed from your mobile fare, be careful with heavy content.
Alternatives: Wireless broadcasting (Cast)
Since direct video connection through USB Xiaomi Redmi 9T It's impossible, the best solution for screen output is wireless broadcast technology. Miracast and Google Cast are built into the shell. MIUI And they work really well. And for that, the TV has to be smart. TV or be connected to a console (for example, Android Box or Chromecast).
Make sure both devices are on the same Wi-Fi network. On your smartphone, lower the notification curtain and find the Broadcast (or Cast) icon. The system will start searching for available devices. Select your TV from the list. On the TV screen, you may see a request for confirmation of connection — agree with the remote.
The quality of the picture with a wireless connection depends on the speed of the router. For comfortable viewing of video in high resolution, it is recommended to use a 5 GHz network. If there are delays when you output your desktop (for example, for presentations), try to close the background applications on the phone to free up the CPU resources.
Also worth mentioning is the Google Home app, which allows you to stream content from specific apps (YouTube, Netflix) directly to your TV without mirroring the screen, which reduces the load on the Redmi 9T battery and provides better video stream stabilization.
Solution and diagnosis
Users can experience a variety of errors during the setup process. Often the problem lies in the cable. Many complete cables are designed only for charging and do not have internal data lines. If a computer or TV does not respond to a Redmi 9T connection, 90% of the time the cable is to blame.
Another common scenario is the lack of drivers on the TV side when trying to use the device. USB-In this case, rebooting both devices will help. Turn the TV off the socket completely (not in sleep mode) for 10 seconds, then turn it on again. Reboot the smartphone.
⚠️ Attention: When used actively USB-Do not run heavy games or the navigator.The Snapdragon 662 processor may not cope with the simultaneous load, which will lead to a system freeze.
If the TV sees a flash drive but doesn't play video, check the codec. Standard TV players often don't support modern audio compression formats (e.g. DTS or AC3 in some containers), which will help install a third-party player on the TV itself (if it's an Android TV) or convert a file on a computer.
To diagnose the condition USB-You can use special applications from Google Play, such as"USB Device Info. They'll show you if the host mode is active, which version is active. USB Supports the port and which devices have been connected before.
- 🔍 Check your phone’s connector for dust and pile – this is a common cause of poor contact.
- 🔄 Update the system. MIUI Up to the latest version to improve peripheral compatibility.
- ⚡ Use original or certified cables no longer than 1 meter in length for stability.
Final recommendations for the choice of method
To sum up, we can say that for the owner of Xiaomi Redmi 9T the term "connection" through USB" It's transformable. Direct video is not available, but port functionality allows you to do related tasks. If you want to watch a movie, the best choice is to stream wirelessly or upload a file to a flash drive — USB-modem will be a salvation.
Don't chase cheap adapters that promise miracles, invest in a good Wi-Fi router or subscribe to online cinemas with casts, which will give you a better multimedia experience on the big screen.
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For maximum stability when viewing online video through USB-modem disable all background downloads and synchronization of photos on the phone so that the entire channel goes to the TV.
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Redmi 9T Does not support direct video output through USB, The main methods are Wi-Fi transactions and use. USB-collectors.
The combination of these techniques will allow you to turn the Redmi 9T into a powerful remote control for your home theater.