How to connect Redmi 9 to Xiaomi TV: the complete guide

Modern smartphones like Redmi 9 have become powerful multimedia centers capable of playing high-resolution content. However, a small screen of a mobile device is often not enough to comfortably view movies or show photos to a large audience. Owners of the Xiaomi ecosystem are in a favorable position, because the integration between their devices is implemented at a deep system level.

There are several proven ways to broadcast an image, each with its own advantages depending on the situation: you can use the built-in features of the Mi Cast wireless protocol or resort to a classic wired connection through the Internet. HDMI-Adapter: The choice of method depends on your requirements for signal stability and the availability of free time for initial setup.

In this guide, we will take a look at all the connectivity options available, from simple wireless solutions to professional wired methods, with a focus on the finer points of resolution customization and the elimination of possible delays that often occur when heavy video content is transmitted.

Preparing devices for synchronization

Before you start pairing gadgets, you need to make sure that both devices are in good condition and ready to work in network mode. First of all, check the version of the operating system on your Redmi 9, as older versions of the MIUI shell can contain bugs that prevent stable data transfer. Updating to the current version often solves hidden compatibility problems.

A critical requirement for wireless connectivity is to have your smartphone and TV on the same local area network. If your router supports dual-band, make sure both devices are connected to 5 GHz, not 2.4 GHz, and this will provide the necessary channel bandwidth for high-resolution video transmission without artifacts.

⚠️ Note: If your router distributes two networks with the same name (Smart Connect), devices can automatically switch between bands, which will cause a connection to break. For stable operation, it is better to temporarily split the networks or force the priority of 5 GHz in the router settings.

Also, make sure that the external device detection feature is enabled on the TV. In the MIUI TV or Android TV interface, this option is usually active by default, but in some cases, manual activation of the connection standby mode is required.

Wireless connection via Mi Cast

The easiest and fastest way to do this is to use the native Mi Cast feature, built directly into the smartphone shell, which allows you to stream the screen in real time with minimal latency, which is ideal for watching video from a gallery or showing presentations.

The activation process begins with opening the control panel. Swipe from top to bottom to open the notification curtain, and find the Broadcast icon or Mi Cast. If the icon is hidden in the secondary menu, click on the edit button (usually a pencil icon or a tripod) and drag the desired item to a prominent place.

Once the scan is activated, the smartphone will start searching for available displays on the network. Your Xiaomi TV or Mi TV should appear in the list. Click on the device name, and in a few seconds the image from the smartphone screen will appear on the TV.

It is worth noting that when using this method, the smartphone screen is duplicated completely, which means that any notifications, incoming calls or messages will be visible on the big screen.

Broadcasting through the Xiaomi TV+ app

For more advanced content management, especially if you want to stream videos from an embedded player or apps, it’s better to use the Xiaomi TV+ app (formerly known as Mi Remote or Mi Video) which provides more flexible settings and allows you to use your smartphone as a remote control.

Launch the app on Redmi 9 and go to the TV section. The system automatically prompts you to connect to your nearest TV. Unlike simple screen mirroring, here you can send specific media files, and the TV will play them yourself using its decoders.

• 📺 DLNA-Streaming: Allows you to transfer video files directly without loading the smartphone processor.
• 🎮 Game Mode: Special optimization to reduce input delays when playing on the big screen.
• 📂 Access to files: The ability to play videos from any folder, including those not visible to a standard player.

An important advantage of this method is the ability to control playback from the phone. You can pause the video, rewind or adjust the volume without getting out of the sofa. In addition, the application supports the Private Screen function when the video goes to the TV, and control and chats remain on the smartphone screen.

Connecting via HDMI adapter

If the wireless connection is unstable or requires maximum image quality without compression, the only right solution is wired connection. However, there is an important technical nuance: the USB Type-C port in Redmi 9 is USB 2.0 standard and does not support direct video output (MHL or DisplayPort Alt Mode).

This means that the cheap USB-C to HDMI adapter won’t work, and you’ll need a dedicated adapter that uses DisplayLink technology to implement a wired connection, and these adapters have their own chip converter inside, which processes the video signal programmatically.

To work with the DisplayLink adapter, you need to install the corresponding application from the Google Play Store. After connecting the cable and installing the drivers, the smartphone recognizes the external display as a second monitor, you can choose the desktop expansion or full mirroring mode.

⚠️ Note: DisplayLink adapters put additional strain on the smartphone processor, as the video stream is coded programmatically, which can lead to increased battery consumption and heat of the device with prolonged use.

Using Chromecast built-in

Many modern Xiaomi and Mi TVs have built-in support for Google Chromecast technology, which allows you to stream content from applications that support this feature (YouTube, Netflix, Vimeo, Google Photos) directly to the TV, bypassing the screen of the smartphone.

Open an app, like YouTube, on your Redmi 9. In the top corner of the video or in the app interface, find the broadcast icon (a rectangle with waves in the corner). Click on it and select your TV from the list of available devices.

The main difference between this method and Mi Cast is that the TV takes over all the work of buffering and decoding the video, in which case the smartphone acts only as a remote control. You can turn down the YouTube app, respond to messages or even turn off the phone screen - playback on the TV will not interrupt.

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For the best quality when using Chromecast, make sure that the video file in the app is set to the maximum resolution (like 4K), as the app can default to lower quality to save traffic.

This is ideal for viewing online cinemas, as it provides the most stable picture and frees up the resources of the smartphone. However, you can not stream desktop or games via Chromecast directly from the system, only from supported applications.

Customization of quality and problem solving

Even with a perfect setup, users may experience audio and image desynchronization or low frame rates. Often the problem is Wi-Fi congestion. If you have the opportunity, try changing the router's broadcast channel to a less busy one (for example, 36, 40 or 44 in the 5 GHz band).

In the developer settings on Redmi 9, you can find parameters that affect data transfer speed. To access them, go to Settings → About Phone and seven times click on the MIUI Version. Then in the Additional → For developers, find the Animation item and reduce their speed, which can visually speed up the interface response when broadcasting.

• 📉 Decrease in resolution: If the picture slows down, try to reduce the resolution of the smartphone screen before broadcasting.
• 🔋 Power saving: Turn off the power saving mode as it limits the performance of the Wi-Fi module.
• 🔄 Reboot modules: Turn on and off flight mode for 10 seconds to reset network settings.

It’s also worth checking if heavy apps that consume Internet traffic (game updates, file downloads) are running in the background, and they can “strangle” the channel needed to transmit video to the TV.

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The stability of wireless broadcasting is 90% dependent on the quality of the Wi-Fi signal and the absence of interference in the air, not just the power of the smartphone.

Frequently Asked Questions (FAQ)