Modern technologies allow you to turn your smartphone into a powerful multimedia center, and the bundle Redmi 9 with TV Samsung is a great example of such integration. Users often wonder how to display images from a small screen on a larger panel to watch movies, presentations, or photos in high resolution without using wires. Wireless connection via a local network WiFi — this is the most convenient and aesthetically pleasing method, which does not require purchasing additional HDMI cables or adapters.
In this detailed guide, we'll cover all available syncing methods, from built-in Android features to dedicated manufacturer apps. You'll learn how to set up Miracast, use the protocol DLNA and what are the nuances of the shell? MIUIProper setup will ensure stable video and audio streaming, turning your leisure time into a comfortable experience.
Before you begin, make sure both devices—your smartphone and TV—are connected to the same wireless network. This is a fundamental requirement for most broadcast protocols to work. If your router broadcasts on both 2.4 GHz and 5 GHz frequencies, try to connect both devices to the same band to minimize latency.
Preparing equipment and checking the network
The first step in the setup process is to thoroughly check your network environment. Redmi 9 It runs on the Android operating system with a proprietary shell, which has its own power-saving and network management settings. TVs Samsung, in turn, use the Tizen platform, which also requires the correct network settings to receive a signal. Make sure the function is enabled on your TV. Smart View or a similar image receiving service.
Users often encounter problems with devices simply not seeing each other in the list of available devices. In most cases, the problem lies in the router settings, where AP Isolation may be enabled. This setting prevents devices connected to the WiFi from exchanging data with each other, making streaming impossible.
You can use built-in diagnostic tools to check your connection quality. Go to your phone's network settings and check your connection speed. If the signal is weak, the streaming video will be poor quality, with artifacts and interruptions.
☑️ Check before connection
It's also worth paying attention to the software version. Manufacturers regularly release updates that improve the stability of wireless modules. Redmi 9 check for updates in the section Settings → About phone → MIUI versionOn TV Samsung the path usually looks like this Settings → Support → Software Update.
⚠️ Note: If your router uses a guest network, devices may be isolated from each other by default. For proper streaming, connect your phone and TV to the main network.
Using the built-in Cast feature on Redmi 9
The easiest and fastest way to display an image is to use the standard Android system function, which is available on devices Xiaomi And Redmi often called "Broadcast" or "Cast". This technology is based on the protocol Miracast, which allows you to transmit your screen image in real time with minimal latency. You don't need to install any additional apps, as the functionality is already built into the system.
To start the process, pull down the notification shade on your Redmi 9 Swipe down from the top. Find the "Cast" icon (sometimes it's hidden under the pencil-shaped edit menu button). Once activated, the phone will begin searching for available devices on the network. Your TV should appear in the list. Samsung.
If the icon is not in the notification shade, you can find it in the settings. Go to Settings → Connection and Sharing → BroadcastHere you can enable the feature and select the visibility mode. It is recommended to select "On" so that the TV can detect the phone.
Why might the function not work?
The casting feature may not work if your phone is in airplane mode or if the app you're trying to cast is DRM-protected (for example, Netflix or Kinopoisk in high quality). In these cases, the image may be black, but the audio will continue.
After selecting the TV from the list on the screen Samsung You may be asked to confirm the connection. Use the remote control to agree. From now on, your screen will Redmi 9 will be fully replicated on the larger display. You can switch between apps, and the image on the TV will change accordingly.
Samsung SmartThings app for deep integration
For equipment owners Samsung The company developed an ecosystem application SmartThings, which provides advanced management capabilities. By installing this software on Redmi 9 From the Google Play Market, you get not only the ability to mirror your screen, but also a full-featured TV remote control and access to the file system.
After installing the application, launch it and log in to your account. Samsung Account (or create a new one). The app will automatically scan the network and find compatible devices. When connecting to the TV for the first time, you may be asked to enter the code displayed on the TV screen for security purposes.
In the app interface, select your TV from the list of devices. In the control menu, find the "Screen Casting (Smart View)" button. This method often works more reliably than standard Android Cast, as it uses the TV manufacturer's proprietary APIs to optimize the stream.
- 📺 Allows you to use your phone as a touchpad to control the cursor on the TV.
- 📁 Provides access to your phone's gallery to display photos and videos directly through the TV interface.
- 🔊 Controls the volume and sound sources of the TV.
- 🎮 Supports running games from your phone with image output to the big screen.
An important advantage of using SmartThings The ability to set up automatic scenarios is a plus. For example, when a specific video app is launched on the phone, the TV can automatically turn on and switch to the desired signal source. This creates a "smart home" effect.
Streaming via Google Home and Chromecast
Many modern televisions Samsung support built-in technology Google Cast (Chromecast built-in). This allows you to stream content from apps directly without duplicating the entire smartphone screen, which saves battery life. Redmi 9 and processor resources.
For this method to work, you need to have the app installed on your phone. Google HomeIt serves as a control center for all Chromecast-enabled devices. After installation, open the app and find your TV in the list of available devices.
When you're in an app like YouTube or Netflix, look for the casting icon (the rectangle with WiFi waves in the corner). Tapping it will display a list of devices. Select yours. Samsung TVUnlike mirroring, here the phone acts only as a remote control, and the video is downloaded directly from the internet to the TV.
| Parameter | Screencasting (Mirror) | Google Cast (Chromecast) |
|---|---|---|
| CPU load | High (encodes video) | Low (control only) |
| Video quality | Depends on the WiFi signal | Maximum (up to 4K) |
| Battery consumption | Fast discharge | Minimum |
| Work in the background | No (the screen is on) | Yes (can be collapsed) |
This method is ideal for watching online movies and video services. If you want to show a presentation or photo album, it's better to use the mirroring mode described in the previous sections.
Third-party apps for streaming video and photos
In some cases, standard tools may not support certain file formats or require more customization. This is where third-party apps from the store come in handy. Google PlayOne of the most popular solutions is the application Web Video Caster or LocalCast.
These programs allow you to stream local video files stored in memory. Redmi 9, on TV Samsung according to protocol DLNA or UPnPThey can recode video on the fly into a format understandable to the TV if the original format is not supported.
Install the selected app, open it, and wait for the TV to detect it. Select the file to play. The app will create a local server and send the streaming link to the TV. This allows you to watch videos in formats that Smart TVs can't read directly.
There are also gaming apps that allow you to display games on your TV with minimal latency. However, for wireless gaming, having a router that supports the standard is critical. WiFi 5 (AC) or WiFi 6 (AX) and close proximity of devices.
Troubleshooting and connection optimization
Even with proper setup, technical difficulties can still arise. A common issue is audio and video desynchronization or intermittent image freezing. This almost always indicates issues with WiFi bandwidth or interference.
Try rebooting your router, phone, and TV. This is a simple but often effective step, as it clears network service caches. Also, check to see if your WiFi channel is overloaded by neighboring networks. You can try changing the broadcast channel in your router settings to a clearer one.
If you use a VPN on your phone, be sure to disable it. A VPN reroutes traffic through remote servers, preventing local devices from seeing each other on the network. Relay protocols only work within a local area network (LAN).
⚠️ Note: When updating your TV firmware or the MIUI interface on your Redmi 9, menu names and feature locations may change. Always consult the manufacturer's latest support materials if the standard path doesn't work.
If nothing helps, you can try resetting the network settings on your phone. Go to Settings → Connection and Sharing → Reset WiFi, Mobile Networks, and BluetoothThis will delete saved passwords and settings, but often resolves underlying network driver conflicts.
Frequently Asked Questions (FAQ)
Is it possible to connect Redmi 9 to an old Samsung TV without Smart TV?
Without a Smart TV or built-in WiFi module, it's impossible to connect your phone directly via WiFi. In this case, you'll need to purchase an external set-top box, such as a Google Chromecast, Xiaomi Mi Stick, or Android TV Box, which connects to the TV's HDMI port and receives the signal from your phone.
Why is there a delay in image display when connected via WiFi?
Latency is inherent in wireless data transmission technology. When using the Miracast protocol, the image is compressed, transmitted over the air, and decompressed by the TV. This takes time (0.5 to 2 seconds). This can be critical for games, so it's better to use a wired connection or special gaming modes.
Does connecting to a TV use up a lot of data?
When using Mirror/Cast mode, your internet traffic is not consumed, as data is transferred directly between devices over the local network. Data is only consumed when you stream online videos (YouTube, Netflix) via Google Cast, and even then, the TV downloads the video automatically, without using your phone's battery or data.
How do I turn off the broadcast?
To disconnect, simply tap the casting icon in the notification shade or in the app and select "Disconnect." You can also simply turn off your phone's screen or lock it, although in Miracast mode, the image on the TV may freeze on the last frame until the connection is completely lost.