Modern smartphones Xiaomi And Redmi They offer powerful multimedia capabilities that allow you to easily display content on a large screen. Streaming content via WiFi eliminates the need for HDMI cables and adapters, making viewing photos and videos as convenient as possible. Android device owners often look for ways to quickly and easily connect their gadgets to Smart TVs.
There are several proven methods for implementing this task, each with its own characteristics and equipment requirements. Standard protocols Miracast And Google Cast They are built into the system, but sometimes require hidden features or third-party software. Understanding the differences between these technologies will help you avoid issues with audio lag or poor image quality.
In this article, we will examine in detail the algorithms of actions for various TV models and shell versions. MIUIYou'll learn how to troubleshoot common connection issues and ensure stable high-definition data transmission. Proper network configuration and the appropriate streaming method guarantee high-quality results.
Wireless Image Transmission Technologies on Android
The basis for interaction between a smartphone and a TV are various multimedia transmission protocols. The most common standard for devices Android is a technology Miracast, which enables real-time video transmission without the compression supported by most modern Smart TVs. This protocol creates a direct WiFi connection between devices without burdening the main home network.
The second popular option is the ecosystem Google Chromecast, built into many apps and the operating system itself. Unlike mirroring, the phone acts only as a remote control, sending a link to content that the TV downloads automatically. This reduces the strain on the smartphone's battery and ensures smoother playback of high-definition video.
⚠️ Note: Some older TV models may not support the native Miracast protocol. In these cases, external adapters or software emulators installed on TV set-top boxes must be used.
Company Xiaomi also implements its own solutions to improve compatibility with their smart home ecosystem. Function Mi Play or the built-in broadcast module in the notification shade are often based on hybrid algorithms. They automatically determine the best connection method, switching between standards depending on the capabilities of the receiving device.
Preparing the equipment and WiFi network
Before you begin setup, you need to make sure both devices are in the same network conditions. It is critical that the smartphone Redmi and Smart TV were connected to the same WiFi networkIf your router broadcasts signals on 2.4 GHz and 5 GHz frequencies with different network names, make sure both devices are using the same channel, otherwise they won't see each other.
Make sure the software is up to date on both devices. On TVs Samsung, LG or Sony Latest firmware versions are often required for security protocols to work correctly. On a smartphone Redmi It's also worth checking for updates in the section Settings → About phone, since the old versions MIUI may contain WiFi module bugs.
- 📶 Make sure that AP (Client Isolation) is disabled on your router, which prevents devices within the network from exchanging data.
- 🔋 Charge your smartphone to at least 40%, as streaming video significantly drains battery power.
- 📡 Place the router within line of sight or in an adjacent room without thick concrete walls for a stable signal.
☑️ Check before connection
You should also consider your internet bandwidth if you plan to stream online video. To transmit images at a resolution 4K A stable local network speed of at least is required 25 MbpsWhen using the 2.4 GHz frequency, interference from microwave ovens and Bluetooth devices can occur, so switching to 5 GHz often solves the problem of choppy pictures.
Using the built-in "Cast" feature on Redmi
shell MIUI Provides a native image display tool that doesn't require any additional software. To activate it, pull down the notification shade and find the icon. "Broadcast" (or "Cast"). If the icon is hidden, click the menu edit button (usually three dots or a pencil) and drag it to the active panel.
Once the feature is activated, your phone will begin searching for available devices on the network. A connection permission request may appear on the TV screen, which must be confirmed with the remote control. On some models Redmi This feature may be called "Wireless Monitor" and may be located in the menu Settings → Connection and Sharing → Broadcast.
| Parameter | Description | Recommended value |
|---|---|---|
| Permission | Output image quality | 1920x1080 or higher |
| Frame rate | Smoothness of image movement | 60 Hz |
| Codec | Video stream compression method | H.264 / H.265 |
| Delay | Response time (Latency) | < 100 ms |
⚠️ Note: When using built-in casting, your smartphone's screen will be mirrored on the TV. Incoming notifications, messages, and calls will also be visible on the big screen, so it's recommended to enable "Do Not Disturb" mode.
This feature works in the background, allowing you to switch between apps on your phone. However, running heavy games or resource-intensive tasks can cause audio and video to become out of sync. For viewing photos or presentations, this method is the simplest and most effective solution.
Broadcast via the Google Home app
For TVs that support this technology Chromecast built-in the main management tool is the application Google HomeIt comes pre-installed on most certified Android smartphones, but if you don't have it, you'll need to download the APK file or find it in the store. Play MarketThis is Google's official solution, ensuring maximum compatibility.
After launching the app and logging into your Google account, click on your TV icon in the list of devices. In the menu that opens, select the button "Broadcast Screen" (Cast my screen). The system will notify you that audio and video will be broadcast, after which the connection process will begin.
- 📺 Allows you to broadcast content from applications that do not have their own casts button (for example, the browser or gallery).
- 🎮 Ideal for showcasing mobile gameplay on a large screen with minimal lag.
- 🔊 Sound is transmitted through the TV speakers, freeing up the smartphone speaker for system sounds.
It's important to note that Google Home requires a stable internet connection, as some authentication and handshake processes go through Google servers. If your router has strict firewall settings, access to the servers may be restricted, resulting in connection errors.
Why can't Google Home see my TV?
The problem often stems from local network permissions. In Android settings (under "Apps" -> "Google Home" -> "Permissions"), access to "Nearby Devices" and "Local Network" must be enabled. Without these permissions, the app physically can't scan for TVs on the WiFi network.
Specialized applications for Smart TVs of different brands
TV manufacturers often develop their own utilities to improve compatibility with mobile devices. For technology Samsung an application has been created Smart View (now integrated into the system, but for older models there is separate software), which provides a stable connection and additional image settings. Owners LG use LG TV Plus, and for Sony And Philips there are proprietary solutions.
These apps often provide advanced functionality not available in standard Android tools. For example, the ability to control the TV remote from the smartphone screen, transfer files in the background, or launch specific apps on the TV. Installing such software can resolve issues with standard Miracast.
When using third-party apps from TV brands, make sure the corresponding service is enabled on the TV. It's usually called "Screen Share," "Smart View," or "Projector" and can be found in the list of signal sources or in the network settings menu. Without this service enabled on the TV, the app on your phone won't be able to find the device.
⚠️ Note: App interfaces and feature names may change with TV firmware updates. If you don't see the feature you're looking for, check the manufacturer's official website for the latest instructions for your model.
Troubleshooting connection and latency issues
Despite the simplicity of the technology, users often encounter situations where the phone can't detect the TV or the connection constantly drops. The first step in troubleshooting is always rebooting the router. Accumulating errors in the ARP table or a DHCP server buffer overflow can prevent devices from being detected on the local network.
If the image is choppy or the audio lags behind the video, try lowering the streaming quality in your phone's settings or moving your smartphone closer to the router. Signal interference from neighboring WiFi networks can also cause interference. In this case, changing the broadcast channel in your router settings to a less congested one (e.g., 1, 6, or 11 for 2.4 GHz) may help.
In some cases, antivirus software or a firewall on your smartphone may block outgoing connections to the local network. Check your security settings and add the streaming app to the exceptions list. Also, make sure your TV doesn't have a password for the Wi-Fi Direct connection if the protocol requires one.
Frequently Asked Questions (FAQ)
Why doesn't my Redmi phone find my TV in the list of devices?
Most likely, the devices are connected to different WiFi networks (for example, one to a guest network and one to the main network) or client isolation is enabled on the router. Also, check if the TV is hidden in the privacy settings.
Is it possible to broadcast a screen if there is no internet, only a router?
Yes, Miracast and Wi-Fi Direct don't require internet access; the router simply needs to create a local network to which both devices are connected. However, Chromecast often requires internet access for the initial handshake.
Does broadcasting affect mobile internet speed?
When using local streaming (Miracast), your mobile data usage is completely zero; traffic is limited to your home network. Using Google Cast over mobile data will consume a significant amount of data.
How do I remove black bars at the edges of the screen when broadcasting?
This is due to the different aspect ratios of your phone and TV screens. In your TV settings, find the image scaling mode (Aspect Ratio) and select "Fit to Screen" or "16:9" to stretch the image.