Connecting Redmi Note 9 to TV via WiFi: All Methods

Modern smartphones such as Redmi Note 9TVs have powerful screens, but they're still not enough for a full-fledged home theater. Users often wonder how to display images on a large screen without unnecessary wires. Wireless data transmission technology allows you to enjoy content on your TV with maximum convenience, using only your home network.

There are several proven methods that allow you to synchronize Android device and Smart TV. Xiaomi and Redmi owners have access to both system functions and third-party apps. It's important to understand that for stable operation, both devices must be connected to the same local network, which is a critical requirement for setup.

In this article, we'll detail the steps for different TV types. You'll learn about the built-in shell tools. MIUI, using the Google Cast standard, and specific media server apps. Following the instructions will help avoid common connection errors.

Preparatory stage and network testing

Before setting up the broadcast, you need to make sure your network equipment is working properly. Your router should be turned on and working properly, distributing internet to both devices. If your Redmi Note 9 If you are connected to 4G mobile internet and the TV is connected to your home WiFi, you won't be able to establish a connection.

Check your router's broadcast frequency. Modern standards support the following ranges: 2.4 GHz And 5 GHz. For transmitting high-definition video, especially in the format 4K, it is preferable to use the 5 GHz range, as it provides higher throughput and is less susceptible to interference.

⚠️ Note: If your router is distributing two networks with the same name (Dual Band SSID), try temporarily separating them or, conversely, combining them in the settings if the devices cannot see each other.

Make sure your TV is Smart TV enabled and WiFi is turned on. Some older TV models may require a firmware update to ensure proper protocol operation. Miracast or DLNACheck for available updates in your TV's settings menu.

Using the built-in "Broadcast" function (Miracast)

The most versatile way for owners Redmi Note 9 is to use the system function "Broadcast". This method is based on the technology Miracast, which allows you to mirror your smartphone screen to your TV without the delays typical of streaming video.

To activate, pull down the notification shade and find the "Cast" icon. If it's not on the home screen, tap the pencil or three dots to edit the menu and add the widget. Once enabled, it will search for available devices on the network.

Once your TV appears in the list, click on it. A connection confirmation prompt may appear on the TV screen, which you'll need to accept with the remote. After that, the image will appear. Redmi Note 9 will be copied completely to the big screen.

• 📱 Open the control panel by swiping down.
• 📡 Click the "Broadcast" button.
• 📺 Select your TV from the list.
• ✅ Confirm the connection on the TV screen.

It's worth noting that this method doesn't lock your smartphone, but it can only be controlled from your phone. If you exit the app or minimize it, the desktop or other open window will also appear on the TV.

Google Chromecast technology for Android TV

If your TV is based on Android TV or has built-in support Google Cast, the connection process becomes even easier. This technology allows you to stream content from specific apps, such as YouTube, Netflix, or the Chrome browser, without overloading your phone's processor with full screen mirroring.

In the YouTube app on your phone, look for the rectangle icon with WiFi waves in the corner of the video. Tap it and select your TV. The video stream will switch to your TV, and you can use your smartphone as a remote control or for other tasks.

Why is the video lagging?

If the video freezes when streaming via Chromecast, try reducing the quality in the YouTube app from 4K to 1080p. This will reduce the load on your WiFi channel and buffering.

To broadcast a tab from a browser Google Chrome Tap the three dots in the browser menu and select "Cast." Here you can choose to cast a specific tab or the entire device screen. This is convenient for viewing web pages that aren't mobile-friendly.

• 🌐 Open a Cast-enabled app.
• 📶 Click on the broadcast icon.
• 📺 Wait for the TV name to appear.
• ▶️ Start playing the content.

The advantage of this method is the ability to control playback from your phone and the independence of apps. You can minimize YouTube and reply to messages in messengers without interrupting the movie on your TV.

Mi Drop app and the Xiaomi ecosystem

Smartphone owners Xiaomi And Redmi have access to the proprietary tool Mi Drop (now known as Xiaomi Share). While the app's primary function is quick file transfer, it also allows interaction with other devices in the ecosystem, including Xiaomi TVs and Mi Box.

If you have a Xiaomi TV, make sure Bluetooth and WiFi are enabled on both devices. Open your gallery, select a video or photo, tap "Send," and select Mi Drop. Your TV should appear in the list of devices.

This method is ideal for viewing local files downloaded to your phone. The system automatically detects the codec and resolution, streaming the video directly to your TV without real-time encoding, saving battery life.

Streaming via DLNA and third-party apps

In cases where the built-in methods do not work or the TV is not a Smart TV but is connected to the network, you can use the protocol DLNAFor this purpose, Redmi Note 9 You need to install a media server application, such as BubbleUPnP or LocalCast.

After installing the app, scan the network. The program will find your TV as a renderer (output device). Select a video file from your phone's memory and press play on the selected device.

⚠️ Note: When using DLNA, your phone only acts as a remote control. The file is transferred directly from your phone to your TV, so interrupting the WiFi connection will stop playback.

This method is advantageous because it supports virtually any file format that the TV can decode. If the TV doesn't support the audio format or subtitles, they may not be displayed, as the phone in DLNA mode typically doesn't transcode the stream on the fly.

• 📥 Install an application like BubbleUPnP.
• 🔍 Run a local network scan.
• 📂 Find the file you need in the storage.
• 🖥️ Select TV as the output device.

If the router is located far away, buffering and reduced image quality may occur. In such cases, it is recommended to move the devices closer together.

Quality solution and optimization

Even with proper setup, technical difficulties may arise. A common issue is audio and video desynchronization or intermittent image flickering. This indicates insufficient bandwidth or an overloaded processor.

Try rebooting your router by unplugging it from the power outlet for 10-15 seconds. This will clear the device's cache and select a less noisy channel for WiFi. Also, check for any background programs running. Redmi Note 9 heavy applications that consume traffic.

If the image appears blurry, check the resolution settings in the casting menu. Sometimes the phone defaults to a low resolution to save power. In the display settings Redmi Note 9 You can force a high resolution if your TV model supports it. HDCP 2.2.

Why doesn't the TV detect the Redmi phone?

Most often, the problem is that the devices are on different networks (for example, one on a guest WiFi network and the other on the main network). Also, make sure that your TV's security settings aren't set to block new connections.

Is it possible to play games on TV using your phone?

Yes, using screen mirroring mode (Miracast). However, due to input lag, this method is only suitable for turn-based strategy games. For fast-paced shooters, lag can be critical.

Does it use a lot of traffic when connected?

Streaming local files doesn't consume internet traffic. If you watch online videos (YouTube, Kinopoisk), the traffic consumed is the same as the amount you watch, but it goes through your router, not your phone's mobile network.