A modern smartphone like the Xiaomi Redmi Note 7 has a powerful screen, but for comfortable viewing movies in high resolution, you often want to use a large TV display. Owners of Android devices have several proven ways to broadcast images that do not require complex technical knowledge. The choice of method depends on the type of TV, the presence of a stable Wi-Fi network and the desired image quality.
The main goal is to ensure that the synchronization between the mobile device and the TV screen is ensured so that sound and video are transmitted without delay. In this article, we will discuss in detail wireless protocols, wired connections through the Internet. USB-cable or adapters, as well as specific interface settings MIUI. You will learn how to avoid common mistakes when pairing devices from different manufacturers.
Before you start setting up, make sure that both devices are charged or connected to the power supply, as the transmission of the video stream can significantly consume battery power. It is also critical that at the time of setting up, both gadgets are in close proximity to each other for a stable signal.
Wireless connectivity via Wi-Fi and Miracast technology
The most popular and convenient way to bring the Redmi Note 7 screen to a large monitor is to use the built-in wireless display feature, which is based on the Miracast standard, which is supported by most modern Smart TVs. You don't need additional cables or consoles if your TV has a Smart TV feature.
To get started, make sure that both the phone and the TV are connected to the same Wi-Fi network. If the router is handing out at 5 GHz, the transmission quality will be higher and the delays are minimal. From the smartphone menu, go to Settings, then select Connection and Sharing, or find the Translation feature in the notification curtain.
Once you activate the search, the system will start scanning the available devices. When your TV name appears in the list, click on it to pair, and a request for confirmation of connection may appear on the TV screen, which you need to accept by the remote.
- 📺 Open the Smart Hub menu on your TV and find the Screen Mirroring or Translation app».
- 📱 On Redmi Note 7, lower the notification curtain and click the Translation icon».
- 🔗 Make sure both devices see the same Wi-Fi network.
- ✅ Accept the connection request on the TV screen.
⚠️ Note: When using the wireless method in a room with a large number of other Wi-Fi networks, short-term interference or sound dissynchronization is possible.
It is important to understand that picture quality is directly dependent on the speed of your router. If you plan to watch movies in 4K, make sure that the router supports 802.11ac. Otherwise, the image can slow down or lower the resolution automatically.
Google Cast (Chromecast built-in)
Many modern TVs have built-in support for Google Cast technology, which allows you to stream content directly from apps without completely mirroring the screen. This is especially convenient for watching videos through YouTube, Netflix or online cinemas, since the load falls on the TV, not on the smartphone processor.
Unlike Miracast, it doesn't transmit the entire screen, it transmits a specific video stream. Open an app like YouTube, find a video, and click on the wave rectangle icon in the corner of the player. Select your TV from the list, and the video will start playing on the big screen.
The advantage of this method is that you can use your phone for other tasks, text messengers or check your email while the movie is on the TV, and Google Cast provides a more stable picture, since the TV itself downloads the stream from the Internet.
What to do if the TV is not on?
If there is no built-in feature, you can purchase an external dongle Chromecast that connects to the Chromecast. HDMI-It's going to turn even an old model into a smart device that's compatible with the Xiaomi ecosystem.
Wired connection via USB-C to HDMI adapter
For users who want maximum stability and no delays, wired connectivity is ideal, but there is an important technical nuance: the USB Type-C port in Redmi Note 7 is USB 2.0 specification and does not support video output directly via the USB-C adapter to HDMI.
This means that a simple adapter cable won’t work. To implement a wired connection, you’ll need a dedicated adapter running through DisplayLink technology, or a video output-enabled docking station compatible with the Snapdragon 660 chipset. In most cases, it’s easier and cheaper to use wireless methods or an external console.
If you find a compatible adapter or use an external GPU, the connection is simple: insert the adapter into the charging port, connect. HDMI-cable from adapter to TV and switch the signal source to TV to the appropriate port HDMI 1 HDMI 2.
| Type of connection | Image quality | Delay (Latency) | Battery consumption |
|---|---|---|---|
| Miracast (Wi-Fi) | High (up to 1080p) | Medium | High-pitched |
| Google Cast | Maximum (up to 4K) | Low. | Medium. |
| USB-C to HDMI | Depends on the adapter. | Absent. | Low (charging) |
⚠️ Note: Don’t try to use cheap adapters USB-C on HDMI, purchased for flagships Samsung or Huawei, they will not work with the Redmi Note 7 due to the lack of video output in the port.
Broadcasting through DLNA applications
Another effective way to view media content is using the DLNA protocol, which allows you to transfer video files stored in your phone’s memory or streaming video to your TV, as long as you have the appropriate media applications installed on both devices.
You need to install a receiver app on your TV (for example, Media Player or specialized apps from the TV manufacturer). On your Xiaomi smartphone, install a controller app, such as BubbleUPnP or the built-in MI Video player. In the player settings, select the option “Translate” or “Cast”.
The good thing about this is that it doesn't require you to mirror the entire screen, so you pick a particular file in the gallery, and it goes to the TV, and the TV itself decodes the video, which reduces the load on the smartphone and allows you to watch the video in high bitrate without jerking.
- 📂 Open the video file in the Mi Video app.
- 📡 Press the “Translation” button (screen icon).
- 📺 Select your TV from the list DLNA-device.
- ▶️ Reproduction control is carried out from the phone.
The main advantage of DLNA is the ability to play files of different formats that may not be supported by built-in broadcasting tools, but to work this method, both devices must be on the same local network.
☑️ Checking readiness DLNA
Setting up resolution and image format
When connecting the Redmi Note 7 to your TV, it is important to properly configure the output settings so that the image occupies the entire screen and does not get distorted. You can find resolution and pixel density options in the Translation menu or in the developer settings.
You should set the resolution to match the native resolution of your TV. If you have a Full HD TV, choose 1920×1080. If you set it up smaller, it will stretch and look soapy. If it's bigger, it will zoom in, which can put a lot of pressure on it.
Also worth noting is the aspect ratio. The smartphone is 19.5:9, and the TVs are usually 16:9. When you mirror the screen on the sides, you can see black stripes. This is normal, because the proportions of the screens are different.
⚠️ Attention: Change in density DPI And if you put it in the developer's settings, you can make the interface of the phone inaudible.
For movies, landscape mode is best. Most apps automatically rotate the image when you turn your smartphone, but sometimes you need to block the orientation of the screen in the broadcast settings.
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To improve sound quality when broadcasting over Wi-Fi, connect an external speaker system or soundbar to the TV via optical output or HDMI ARC.
Resolving and eliminating delays
Even with the right setup, users can face problems: dissynchronization of sound and video, periodic freezes or complete absence of image, often due to overload of the Wi-Fi channel or outdated software.
The first thing to do is to restart the router, which will clear the cache and select the least congested channel, and check for updates to the MIUI system on your Redmi Note 7. Updates often contain patches to improve the stability of wireless connections.
If video slows down, try to reduce the stream quality in the player app settings (e.g., from 1080p to 720p) to reduce network bandwidth requirements. Also close the background apps on your smartphone that may consume traffic.
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The stability of the connection depends on the quality of the Wi-Fi signal and the load of the router channel by 90%.
In some cases, resetting the network settings on the phone helps, which will remove stored Wi-Fi passwords and Bluetooth settings, but often solves problems connecting to peripherals.