Modern smartphones, such as the popular Xiaomi Redmi 9A, have become powerful multimedia centers capable of playing high-definition content. However, mobile device screens are often too small for comfortable viewing of movies or photos with the whole family. Fortunately, wireless technology makes it easy to stream content from your phone to a large TV screen using only your home network. Wi-FiThis eliminates the need to purchase additional cables and provides freedom of movement around the room.
The connection process depends on the TV's operating system and the MIUI firmware version installed on your device. In most cases, owners Redmi 9A There's no need to install complex programs, as the necessary functions are built into the Android system. The main requirement is a stable connection and proper configuration of both devices. In this article, we'll cover all available methods in detail, from standard protocols to specialized apps.
It's worth noting that the quality of the transmitted signal directly impacts image resolution and the absence of lag. If you plan to watch large 4K files, make sure your router supports the standard. 5 GHzThis will ensure the necessary channel bandwidth for uninterrupted data transfer. Let's look at how to prepare your equipment for synchronization.
Preparing equipment and a Wi-Fi network
The first and most important step is to ensure that both devices are on the same network environment. Your Redmi 9A The Smart TV and the device must be connected to the same Wi-Fi access point. If you have a dual-band router, it's best for both devices to be in the same frequency band, although modern routers often group networks under a single name. Check that the wireless module on your phone is activated.
The second preparation aspect concerns the TV itself. Many Samsung, LG, or Sony models require manual external connection authorization. This option is typically found in the network or connection settings. Without signal reception enabled, the phone simply won't see the display in the list of available devices.
⚠️ Important: If your router is configured for client isolation, devices on the network will not be able to see each other. Make sure this feature is disabled in your router settings, otherwise you will not be able to connect.
It's also worth checking the software version. Outdated firmware on Redmi 9A may contain bugs that interfere with broadcast protocols. Please go to settings and check for system updates to ensure compatibility with all modern media transmission standards.
Using the built-in "Broadcast" function (Miracast)
The easiest and fastest way to mirror the screen is to use a native Android feature, which in MIUI is often called "Cast" or "Wireless display." This method is based on the technology Miracast, which allows you to transmit images in real time without loss of quality. To launch, pull down the notification shade on Redmi 9A and find the icon with the corresponding name.
If you don't see the VCOM menu icon, go to your phone's main settings. You'll need to go to the "Connection and Sharing" or "Display" section. This is where you'll find a toggle that enables searching for available displays within Wi-Fi range. Once enabled, your phone will begin scanning the air.
☑️ Pre-broadcast check
Once the TV appears in the list, click on it. A connection confirmation request may pop up on the TV screen, which you'll need to accept with the remote. After that, the image from Redmi 9A It's fully replicated on the big screen. You can switch between apps, and the content will be displayed on the TV.
Broadcasting via the Xiaomi Mi Remote app
Xiaomi owners often find it more convenient to use the proprietary app Mi Remote, which comes preinstalled on most models, including the 9A. It's not just a remote control, but a powerful multimedia control tool. The app not only lets you change channels but also stream photos and videos from your gallery directly to your TV.
Launch the app and add your TV if it hasn't already been added. The system will prompt you to select a manufacturer from a list (Samsung, LG, Philips, and others). After successful pairing via IR or Wi-Fi, a "Cast" button will appear in the remote control interface. This is especially convenient if the standard Miracast protocol is unstable.
The advantage of this method is its deep integration with the MIUI shell. You'll experience reduced lag when controlling your media player. However, keep in mind that functionality may vary depending on your TV model and app version.
Using the Google Home app for Chromecast
If your TV supports the technology Chromecast built-in (often found on Sony, Philips, TCL) or you have an external Chromecast box, the official app is your best bet. Google HomeIt's available on the Play Store and provides the most stable experience with the Google ecosystem.
Install the app and sign in to your Google account. The program will automatically detect devices on the network. Select your TV and click the "Cast Screen" button. Unlike Miracast, this uses stream encoding, which may introduce a slight delay but provides better compatibility with video services.
| Protocol | Delay | Quality | Compatibility |
|---|---|---|---|
| Miracast | Minimum | High | Android, Windows |
| Chromecast | Average | Very high | Android, iOS, Chrome |
| DLNA | Absent* | Depends on the file | All Smart TVs |
| TV apps | No | Maximum | Video only |
It is important to note that when broadcasting via Google Home The phone acts as a controller. This means you can use Redmi 9A For other tasks while the video is playing on the TV, if the app supports this feature. Otherwise, the screen will be locked for other activities.
Streaming content from specific apps (YouTube, Netflix)
The most energy-efficient way to watch videos is to use the built-in Cast feature within the apps themselves. Open YouTube, Netflix or Kinopoisk on your own Redmi 9AIn the top corner of the interface, you will see a rectangle icon with Wi-Fi waves.
Tap this icon and select your TV from the list. In this case, the phone doesn't mirror the entire screen; it only sends a link to the video stream to the TV. The TV automatically downloads the video via its Wi-Fi module. This frees up your smartphone's resources and saves battery life.
Picture quality is often higher in this mode, as the TV can buffer the stream better than a phone. Furthermore, if you receive a call, playback on the TV won't be interrupted, unlike with full-screen mirroring.
Alternative solutions: third-party apps and DLNA
If standard methods don't work or your older TV model doesn't support Smart features, media server apps can help. Programs like BubbleUPnP or Web Video Caster allow you to organize streaming transmission using the protocol DLNAThey turn the phone into a server, and the TV acts as a renderer.
To use DLNA, download the app, select a file (video, photo, music), and click "Play to." The app will search for available devices on your local network. This method is great because it's universal and works even on older Smart TVs, as long as they support the DLNA standard.
⚠️ Please note: When using free third-party apps, please be prepared for potential ads. Some features, such as subtitles or audio tracks, may only be available in paid versions.
There are also remote control emulator apps that have a built-in screencast function. These can be useful if Android system services are running Redmi 9A do not work correctly after the update.
Solving problems and delays
Users often experience audio and video desynchronization or intermittent image flickering. The main cause is Wi-Fi congestion. If the router distributes internet to several devices simultaneously, the bandwidth may not be sufficient to handle high-bitrate streams.
Try moving your phone and router closer together or removing any physical obstacles. Metal structures and mirrors can block the signal. Restarting the router, which clears the cache and selects the least congested channel, also helps.
Why is there no sound during the broadcast?
If there's a picture but no sound, check the volume settings on the TV itself (not on the phone). Often, when connecting via Miracast, the sound switches to the TV speakers, and if they're muted, there will be no audio. Also, check that your phone's Bluetooth settings aren't set to "Mute" if the sound is coming from a headset.
If the issue persists, check if power saving mode is enabled on your phone. Aggressive battery optimization in MIUI can limit background network services required for stable video streaming. Redmi 9A.
Questions and Answers (FAQ)
Is it possible to connect Redmi 9A to a TV without Wi-Fi?
Without a wireless network, you can only use a wired connection. You'll need a USB Type-C to HDMI adapter. However, Redmi 9A It has a USB 2.0 port, which may not support video output (MHL/Alt Mode). Therefore, wireless Wi-Fi remains the primary and most reliable option for this model.
Why doesn't the TV see the phone when searching?
Make sure both devices are connected to the same network (not the router's guest network). Also, check that the "Broadcast" app is allowed in your security or antivirus settings. Sometimes, rebooting the Wi-Fi module on both devices helps.
Does broadcasting affect internet speed?
Yes, streaming high-quality video consumes a significant portion of your bandwidth. If you're watching a 4K movie online, the rest of your internet connection may slow down. Playing files from your phone's memory (offline) doesn't consume any bandwidth; only your local network is used.
How do I turn off screen sharing?
To stop broadcasting, simply unlock your phone, open the control panel (curtain), and tap the "Disconnect" button in the broadcast widget. You can also simply turn off Wi-Fi on your phone, although this is a less efficient way to end the session.
Does Redmi 9A support Bluetooth speaker audio streaming?
Typically, when using Miracast, audio is transmitted along with video to the TV. If the TV doesn't have good speakers, redirecting audio to a Bluetooth headset while simultaneously streaming video to the TV using standard methods is difficult, as the system typically selects a single audio output.