Modern smartphones of the line Xiaomi Redmi Phones have powerful displays, but even the highest-quality matrix can't replace the experience of watching a movie on a big screen. Fortunately, technology makes it easy to stream images wirelessly, eliminating the need to search for cables and adapters. In this article, we'll explore all the current methods for outputting video from your phone to your TV using only Wi-Fi and the system's built-in features. MIUI.
The key to successful data transfer is a stable network connection. Before you begin setup, make sure your smartphone and the receiving device (TV or set-top box) are connected to the same network. If the router broadcasts signals on both 2.4 GHz and 5 GHz frequencies, it's best to use the same frequency for both devices to avoid visibility issues on the local network. Video streaming protocols such as Miracast or DLNA, are sensitive to breaks, so a quality signal is 90% of success.
There are several usage scenarios: full screen mirroring or launching a specific video via the built-in player. The first option is convenient for showing presentations or photo albums, while the second is for comfortable movie viewing when the phone can be put away. The choice of method depends on the TV's year of manufacture and whether it supports it. Smart TV functions.
Owners Xiaomi They're in an advantageous position because the MIUI interface has deeply integrated multimedia tools. You don't need to install third-party software if your TV supports wireless standards. Let's look at which technologies are available and how to activate them in your device's menu.
Preparing equipment and setting up the network
Before moving on to software settings, you need to ensure physical communication between the devices. The router must be functioning properly, and both devices must be within a strong reception area. Broadcasting issues often arise because one device is connected to a guest network and the other to the main network, blocking their direct communication.
Go to your Wi-Fi settings Redmi and check the network name. It should exactly match the one displayed in your TV settings. If you have a dual-band router, try connecting both devices to the 5 GHz network to ensure the high bandwidth required for 4K video streaming.
⚠️ Note: Some routers have an "AP Isolation" feature that prevents devices within the network from seeing each other. If the TV isn't found, check your router settings and disable this option.
It's also worth making sure your TV's discoverability feature is enabled. On modern models, it's enabled by default, but on older firmware versions, you may need to manually launch the "Screen Share" or "Miracast" app from the TV's app menu. Without active standby mode, your TV may be invisible to search.
Using the built-in "Broadcast" function (Miracast)
The most universal method, which works on most Smart TVs, is Miracast. In MIUI, this feature is called "Cast" and is hidden in the control center or connection menu. It allows you to mirror your smartphone's screen to your TV in real time.
To launch, pull down the notification shade and find the "Broadcast" icon. If it's not on the home screen, tap the pencil icon or the edit button in the corner of the menu to add it from the list of available widgets. Once activated, your phone will begin searching for available devices within range.
☑️ Check before starting the broadcast
When your TV's name appears in the list, tap it. A connection request may appear on the TV screen—confirm it with the remote. After that, the image from your phone will appear on the big screen. It's important to understand that with this method permission The transmitted image will correspond to the resolution of the smartphone screen, not the TV, so the picture may not be full-screen or may have black borders.
Miracast is convenient because it doesn't require installing additional apps. However, it places a high load on the phone's processor and can lead to audio and video desync when viewing large files. For viewing photos or simple menus, it's ideal.
Why might the broadcast be interrupted?
Frequent connection drops when using Miracast are often caused by interference in the air or a weak router signal. Overheating of the smartphone, as the WiFi module is constantly transmitting data, can also be a cause. Try removing the phone's case or lowering the screen brightness.
Streaming via Google Chromecast built-in
Many modern televisions, especially those based on Android TV, have built-in Google Chromecast support. This is a more advanced protocol than Miracast, allowing you to not only mirror your screen but also transmit a link to a video stream that the TV plays automatically. This frees up your phone's resources and saves battery life.
To use this method, make sure that you have Xiaomi Redmi Google Play Services (GMS) installed. Open the app you want to stream content from (e.g., YouTube, Netflix, or the Chrome browser). Find the streaming icon—the rectangle with waves in the corner.
| Characteristic | Miracast (Broadcast) | Google Chromecast | DLNA (Local File) |
|---|---|---|---|
| Transmission type | Screen mirroring | Stream by link | File transfer |
| Load on the phone | High | Low | Average |
| Option to turn off the screen | No | Yes | Yes |
| Picture quality | Depends on the phone screen | Maximum (up to 4K) | Depends on the file |
After clicking the icon, select your TV from the list. Unlike full mirroring, here your phone only acts as a remote control. You can minimize the app, answer a call, or even lock the screen, and the video on your TV will continue playing without interruption.
If your TV doesn't see the standard broadcast menu, try updating the app. Google HomeSometimes this is where the initial setup and familiarization of devices with the Google ecosystem occurs. Also, check if your router has any restrictions on multicast traffic, which is necessary for Chromecast to work.
Transfer video files via DLNA and local network
If you have a high-quality movie downloaded to your phone and don't want to waste mobile data or wait for it to load, use the DLNA protocol. It allows you to stream local files directly from your smartphone's memory to your TV. To do this, Xiaomi It is convenient to use the built-in video player or file manager.
Open the desired video file using the default MIUI player. In the playback controls, find the button with a triangle and rectangle (often labeled "DLNA" or "Cast"). Your phone will prompt you to select a rendering device. Select your TV.
The advantage of this method is that the TV decodes the video itself. This means that even if your phone can't handle a heavy 4K file (it will lag), the TV can display it smoothly, as it handles the load. However, the file format must be supported by the TV.
In some cases, you may need to configure access to media files. When you first launch the app, Android will ask for permission to access the local network and media files. Be sure to approve these requests. Without these permissions, the app will not be able to share videos with an external device.
Third-party applications for complex cases
There are situations where built-in tools can't cope: the TV is old, the protocols are incompatible, or specific sound settings are required. Then third-party apps from Google Play MarketThey often have more flexible codec and buffering settings.
One of the popular solutions is the application Web Video CasterIt not only allows you to stream video but also capture streams from websites that don't have a built-in "Cast" button. You simply paste the video link into the app's browser, and it sends the stream to your TV.
⚠️ Please note: Free versions of streaming apps often contain ads, which can obscure the controls. For full, unimpeded use, you may need to purchase the Pro version.
Another option is to use universal remotes and media servers, such as BubbleUPnP. This app turns your phone into a powerful media server. You can create a playlist of photos, videos, and music stored on your phone or in the cloud and control their playback on your TV.
When using third-party software, it's important to monitor permissions. The app must have access to the local network and storage. In newer versions of Android (11 and above), these permissions must be granted manually upon first launch, otherwise device detection will fail.
Solution: What to do if nothing works
Even with proper setup, technical issues can still occur. The most common issue is that the phone sees the router but not the TV, or the connection keeps dropping. First, try rebooting both devices. This is a simple but effective step, as it clears the network service cache.
Check your antivirus or firewall software if they're installed on your smartphone. Sometimes they block incoming and outgoing connections on your local network, deeming them suspicious. Add your TV to the list of trusted devices or temporarily disable protection to test.
If the video is lagging or choppy, try lowering the stream quality in the source app's settings. For example, in YouTube, switch from 4K to 1080p. Also, close background apps on your phone that may be consuming bandwidth or CPU resources.
Problem with sound
If you see a picture but no sound, check your Android audio output settings. Sometimes the sound stays on your phone instead of switching to the TV. Manually select the audio output device in your Bluetooth or Casting settings.
In rare cases, the problem lies in outdated router or TV firmware. Manufacturers regularly release updates that improve compatibility with new Wi-Fi standards. Go to your router settings and check for software updates.
Frequently Asked Questions (FAQ)
Is it possible to broadcast a screen without the Internet, only via WiFi?
Yes, you can. Miracast or DLNA don't require internet access. All you need is a router that creates a local network to which both devices are connected. Even without a WAN (internet) cable, image streaming will work.
Why does the sound come from my phone and not my TV when I broadcast a game?
It depends on the app. Some games don't support automatic audio switching to an external device when mirroring. In this case, you can connect your phone to your TV via Bluetooth (if your TV supports it) or use an AUX cable if the quality of your TV's built-in speakers isn't satisfactory.
Does video streaming affect the speed of my phone?
When using full screen mirroring (Miracast), the processor and battery load increases significantly, as the phone encodes the video stream in real time. Using Chromecast or DLNA, the load is minimal, as the phone only transmits control commands.
Does my Redmi support wireless projection?
Almost all modern Xiaomi Redmi smartphones support wireless image streaming standards. You can check this by going to the "Connected Devices" or "Screen" section in Settings, where you should see the "Wireless Monitor" or "Cast" option.