Modern smartphones like the Xiaomi Redmi Note 7 have long since ceased to be just a device for calling, becoming powerful multimedia centers capable of playing content in high resolution. However, a small screen of a mobile gadget is not always enough to comfortably view movies or presentations, so there is a need to broadcast the picture on a large display. Owners of MIUI devices often face questions about how to properly configure synchronization without loss of quality and delay.
There are several proven methods to bring a Redmi Note 7 image to a TV screen, and the choice of the specific method depends on the type of TV and accessories available. You can use wireless protocols such as Miracast or Google Cast, or resort to a wired connection via an HDMI adapter.
In this article, we’ll take a look at all the connectivity options available, from built-in MIUI shell features to third-party apps, how to avoid audio and video desynchronization, and how to set resolution for maximum picture quality.
Preparing devices for wireless synchronization
Before you start setting up your image, make sure that both devices are in the same network environment, a fundamental requirement for most wireless protocols, including Miracast and DLNA. If your router is giving away a network at 2.4 GHz and 5 GHz, try to connect both your phone and TV to the same frequency band to minimize latency.
You also need to activate the signal reception function, which can be called differently in different models. In the Smart TV menu, look for "Screen Mirroring", "Translation" or "Connect wireless display." Without activating this mode, the Redmi Note 7 simply will not see the target device in the list of available for connection.
⚠️ Warning: Make sure the router does not activate the “Customer Isolation” function» (AP Isolation, because it prevents devices within the same network from seeing each other, making wireless transmission impossible.
Check out the operating system version on your smartphone as older versions of Android may not support the latest video compression codecs. Software updates often bring improvements to the stability of the Wi-Fi Direct module, which is responsible for direct connection between gadgets.
Use of the built-in Translation function in MIUI
The MIUI shell installed on the Redmi Note 7 has a built-in screen duplication tool that doesn’t require additional software to activate it, lower the notification curtain and find the Translation (or “Cast”) icon. If the icon isn’t in quick access, go to Settings → Connection and Sharing → Broadcast.
Once the feature is enabled, the phone will start searching for available devices within range of the network. When the name of your TV appears in the list, tap it to initiate a connection. The process of shaking hands can take from 5 to 15 seconds, depending on the router's response rate.
☑️ Pre-broadcast checks
It is important to note that when using this method, the phone and TV screen will be fully synchronized, which means that any notifications, incoming calls or messages will be visible on the big screen, so it is recommended to activate the Do Not Disturb mode before watching the movie.
Broadcasting through the Google Home app
If the MIUI built-in is unstable or the TV is not detected, the official Google Home app is an excellent alternative.This method is especially effective for TVs with Chromecast built-in technology or connected Android TV consoles.
Once installed, start the program and log in through your Google account. The app will automatically scan the network and find compatible devices. Select your TV from the list and click the "Cast screen" button. The system will warn you that the sound and image from the phone will be broadcast to TV.
Why is Google Home better than built-in streaming?
The advantage of this method is the ability to stream content from applications that block standard mirror transmission due to copyright protection.In addition, Google Home allows you to control the volume and stop playback directly from the lock screen of the smartphone.
Connecting via HDMI adapter
For users who are critically interested in connection stability and no delays, wired connectivity is the best solution. Since the Redmi Note 7 is equipped with a USB Type-C port, you will need a special adapter (adapter) from USB-C to HDMI. It is important to choose adapters that support the MHL or Slimport standard, although in the case of Xiaomi, simple video converters often work.
The connection is done in the following order: first the adapter is inserted into the charger connector of the phone, then the HDMI cable is connected to the adapter, which goes to the TV, and then you need to switch the signal source to the TV in the appropriate mode (for example, HDMI 1 or HDMI 2).
| Type of connection | Image quality | Delay (Latency) | Battery consumption |
|---|---|---|---|
| Wi-Fi (Miracast) | High (depending on the signal) | Medium/High | High-pitched |
| Google Cast | Maximum (up to 4K) | Low. | Medium. |
| HDMI Cable | Maximum (no compression) | Absent. | Charging the phone |
Note that when wired, the image may not automatically scale to the entire screen if the screen resolutions of the phone and TV do not match, in which case the aspect ratio settings should be adjusted through the menu of the TV itself.
Set up third-party applications for broadcasting
When standard methods don’t work or the functionality isn’t enough, specialized applications from the Play Market store come to the rescue, leading in this niche are Web Video Caster, AirScreen and TeamViewer, which allow you to broadcast not only the screen, but also specific video files, photos or even browser tabs.
To use such utilities, it is often necessary to install a companion application (server part) directly on the TV, if it runs on Android TV or WebOS. After installing a pair of applications on the phone and TV, they find each other over the local network and create a secure data channel.
⚠️ Warning: When installing third-party apps, carefully check the permissions you request. Some free versions may collect data about your network or show intrusive ads, so choose trusted developers.
The browser tab broadcast feature, which allows you to display websites that do not have native Chromecast support, is particularly noteworthy. This expands the Redmi Note 7’s ability to view online cinemas with limited compatibility.
Resolving and eliminating delays
One of the most common problems with wireless transmission is the desynchronization of audio and video streams. Sound can be behind the picture by a few seconds, making watching movies unbearable, most often due to overloading of the Wi-Fi channel or insufficient performance of the processor when encoding video in real time.
To fix the problem, try to reduce the quality of the broadcast image in the settings of the translation application. Also an effective method is to reboot the router and clean the cache of network settings on the smartphone through the Settings menu → Connection and Sharing → Wi-Fi → Additional settings → Reset network settings.
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To minimize delays when playing or watching dynamic video, use a wired HDMI connection or make sure the phone and router are in the same room without thick walls in between.
If the image is twitching or low resolution, check if the Redmi Note 7 is running heavy traffic-consuming apps. Closing the background will free up the CPU and communication channel to ensure a smooth picture.
Reproduction of Protected Content and DRM
Many users are faced with a situation where when trying to stream a movie from a paid service (Netflix, Kinopoisk, iTunes) on the TV, a black screen appears on the TV, although the sound is coming. DRM (Digital Rights Management).
Protection protocols prohibit video stream capture and transmission through conventional screen mirroring techniques. To circumvent this limitation, you need to search the broadcast icon (a rectangle with Wi-Fi waves) and click on it, rather than using the system function Translation.
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System mirroring of the screen is often blocked DRM-protection; to view paid content, use the built-in Cast button inside the player app itself.
In some cases, enabling USB debugging and using specialized tools for developers helps, but for the average user, the most reliable way is to search for the native casts button inside the application.