Broadcasting movies from Redmi Note 7 to TV: a complete guide

Modern smartphones such as Xiaomi Redmi Note 7have powerful screens and excellent performance, but sometimes you want to enjoy your favorite movie on a large display. Watching content from a mobile device on a TV panel turns an ordinary evening into a real home theater. For owners of popular models based on Android this problem is solved in several ways, each of which has its own nuances.

In this article we will look in detail at how to connect your Redmi Note 7 to a TV to watch movies from the Internet or local memory. We will consider both wireless technologies, such as Miracast i Google Cast, and wired solutions through adapters. You will learn what settings need to be changed in the MIUI system to ensure a high-quality picture without delays and freezes.

Many users encounter difficulties when connecting for the first time due to differences in TV firmware and operating system versions. However, by following the step-by-step guide, you can easily set up your broadcast. It doesn’t matter whether you are using the latest generation Smart TV or an older model with an external media player - there is a solution for every case.

Preparing devices and checking compatibility

Before you start setting up the broadcast, you need to make sure that both devices are ready for interaction. Your Redmi Note 7 must be updated to the latest available version of MIUI, as older builds may lack the necessary drivers for wireless image output. Check for updates in the menu Settings → About phone → System update.

The TV also requires preliminary preparation. If you have a Smart TV, make sure it is connected to the same Wi-Fi network as your smartphone. This is critical to the operation of most wireless protocols. If you use a regular TV, you will need an additional set-top box, for example Chromecast or Android TV Box.

It is worth noting that the quality of the connection directly depends on the power of your wireless router. To transmit high-resolution video Full HD or 4K it is recommended to use the 5 GHz band, which is less congested and provides higher data transfer speeds.

⚠️ Attention: If your router only operates in the 2.4 GHz band, stuttering or stuttering may occur when broadcasting heavy video. sound desynchronization. In this case, it is better to consider a wired connection option.

Also check the battery charge of your smartphone. The process of wireless broadcasting significantly increases power consumption, so it is recommended to connect Redmi Note 7 to a charger before watching a movie for a long time.

Wireless connection via the “Broadcast” function (Miracast)

The easiest way to display the image from the screen is to use the built-in function of the Android system, which is often called “Broadcast” or “Wireless Monitor”. This technology is based on the standard Miracastwhich is supported by most modern TVs.

To activate the function on Redmi Note 7 pull the notification shade down and find the “Broadcast” icon. If it is not on the main screen of the Quick Access Toolbar, click on the pencil icon or three dots to edit the list of buttons and add the one you need. After pressing, the phone will begin searching for available devices on the network.

On the TV, you must activate the signal reception mode. In the Smart TV menu, this item may be called differently: “Screen Mirroring”, “Screen duplication”, “Anyview Cast” or “Miracast”. Once the TV appears in the list on your smartphone, simply click on its name.

• 📺 Make sure that the correct signal source is selected on the TV (HDMI or built-in application).
• 📶 Check that both devices are on the same Wi-Fi subnet.
• 🔋 Turn off power saving while watching to avoid the screen turning off.
• 🔄 Reboot the router if searching for devices takes too long.

After a successful connection, the screen of your smartphone will be completely displayed on the TV. You can launch any video player or browser to watch movies from online cinemas. The image will be scaled to fit the resolution of the TV panel.

Using the Google Home application and Chromecast

If your TV supports the technology Google Cast or a set-top box is connected to it Chromecast, you can use the application Google Home for a more stable broadcast. This method often works smoother than standard Miracast, especially when viewing content from specific applications.

Download and install the application Google Home from the store Google Play Market to your Redmi Note 7. Launch the app and provide the necessary permissions to access geolocation and local network. The application will automatically find all compatible devices on your Wi-Fi network.

Select your TV from the list of devices. In the control menu that opens, click the “Cast my screen” button. Confirm the action in the pop-up window, and the image from the smartphone will begin to be transmitted to the big screen.

Connection method	Delay (lag)	Picture quality	Battery consumption
Miracast (Broadcast)	Average	High	High
Google Cast	Low	Optimal	Average
USB-C → HDMI cable	None	Maximum	Low (charging)
DLNA (via player)	Low	Depends on the file	Minimum

An important advantage of Google Cast is the ability to use your smartphone for other tasks while watching. You can minimize the application, reply to a message or check your email, and the movie broadcast will not be interrupted, unlike Miracast mirror mode.

Viewing via DLNA and third-party video players

For those who prefer to download movies in advance and store them in the phone memory or on a memory card, technology is ideal DLNA. This method does not duplicate the entire smartphone screen, but directly transfers the video file to the TV, which itself decodes it.

You will need to install a third-party video player on Redmi Note 7, for example, VLC for Android or BubbleUPnP. These applications have built-in functions to search for media servers and renderers on the local network. Open the video file in the player and find the broadcast icon (usually a rectangle with waves).

Select your TV from the list of available devices. The player will send a command to the TV and the movie will start playing. Playback controls (pause, rewind, volume) remain on the smartphone, but the phone screen can be locked to save energy.

This method is especially useful if you watch movies at high bitrates, which can slow down with normal screen mirroring. A TV, having a more powerful decoder, will cope with a heavy file better than a smartphone when transmitting a picture over the air.

⚠️ Attention: Not all video file formats are directly supported by the TV. If the movie doesn't play via DLNA, try the screen mirroring method or convert the file to MP4 H.264 format.

Make sure your file manager or gallery settings allow local network access. Sometimes the security system MIUI blocks device detection, considering the network to be public.

Wired connection via USB-C to HDMI adapter

If the wireless connection is unstable or you want to achieve maximum picture quality without compression, use a wired connection. To do this, you will need a special adapter USB Type-C to HDMI.

There is an important technical nuance here: the USB-C port in Redmi Note 7 complies with the USB 2.0 standard and, unfortunately, does not support video output in DisplayPort Alt Mode. This means that regular passive USB-C → HDMI adapters will not work. You will need an active adapter that supports DisplayLink technology or use a docking station with external power and drivers.

However, there is an alternative. Some users successfully use adapters that emulate the signal through software drivers installed on the phone. Download the application DisplayLink Presenter from the application store, connect a compatible adapter and launch the app.

The application will ask for permission to record the screen - confirm it.

After setup, the image will appear on the TV. This method creates a small load on the smartphone processor, since video encoding occurs in software, but provides a stable picture without depending on the quality of the Wi-Fi signal.

Why doesn’t a regular cable work?

Budget smartphones, including Redmi Note 7, often have a simplified layout of the USB-C port, where the contacts for transmitting the video signal directly are not output. Therefore, cheap adapters for 500 rubles will not work.

Troubleshooting and common errors

During the setup process, users may encounter a number of typical problems. If the TV does not see the phone, first check the firewall settings on the router. Sometimes the Wi-Fi client isolation feature (AP Isolation) prevents devices from seeing each other on the network.

Another common problem is audio and video out of sync. This often happens when using cheap wireless adapters or when the signal is weak. Try moving closer to the router or rebooting both devices.

• 🚫 “Unable to connect” error: clear the cache of the “Broadcast” application in the phone settings.
• 🔇 No sound: check if the silent mode is turned on on the TV itself.
• 📉 Low resolution: in the developer settings, try changing the screen resolution or DPI density.
• 🔌 The adapter does not work: make sure that external power is connected to the adapter.

If all else fails, try resetting the network settings on your smartphone. Go to Settings → Connection and sharing → Reset Wi-Fi, mobile data and Bluetooth. This action will delete saved network passwords, but may solve the problem of a software conflict.

⚠️ Attention: The menu interface and item names may vary slightly depending on the MIUI firmware version (Global, China, Russia). If you do not find the item you need, use the search in the settings.

Frequently asked questions (FAQ)

Is it possible to connect Redmi Note 7 to old TV without Smart TV?

Yes, it is possible. You will need to purchase an external set-top box, for example Google Chromecast, Amazon Fire TV Stick or any Android set-top box. It connects to the HDMI port of the TV and provides the Smart TV function, allowing you to broadcast images from your phone.

Why does the phone screen go dark when watching movies via “Broadcast”?

This is normal behavior for some applications and energy saving modes. However, if the screen goes blank and the broadcast is interrupted, go to the battery settings and disable the “Turn off screen in standby mode” option or add the video player to the exceptions.

Does connecting your phone to the TV affect the sound quality?

When using Miracast, the sound is transmitted along with the video to the TV. If you want to listen to sound through headphones connected to your phone while watching a picture on TV, this is difficult to do using standard means. Some players allow you to output audio and video separately.

Is it safe to use third-party applications for broadcasting?

Most popular applications from Google Play are safe. However, avoid downloading unverified APK files from questionable sites as they may contain malicious code. Use only official clients from TV manufacturers or well-known brands like VLC.

Is it possible to play games on a TV through Redmi Note 7?

Yes, you can play games in mirroring mode (Miracast). However, due to signal delay (input lag), this method is only suitable for leisurely games. For fast-paced shooters or racing games, latency can make the game uncomfortable.