Modern smartphones such as Redmi Note 9, have powerful screens and multimedia capabilities that often make you want to stream content to a large TV screen. This is especially useful for watching movies, vacation photos, or showing presentations. Fortunately, technology Wi-Fi Direct and built-in data transfer protocols allow you to do this without unnecessary wires and complex equipment.
The process of synchronizing devices takes only a few minutes if you know the correct sequence of actions. For owners Xiaomi And Redmi lucky, because the shell MIUI has built-in streaming tools. However, there are nuances related to operating system versions and TV models that must be taken into account for stable operation.
In this article, we will take a detailed look at all the available methods for connecting your Redmi Note 9 with your TV using only a wireless network. You'll learn about the system's standard features, third-party apps, and troubleshooting common connection errors.
⚠️ Note: The MIUI interface may vary slightly depending on your device's Android version and regional firmware. Menu item names may vary.
Preparing equipment and a Wi-Fi network
Before you begin setup, you need to make sure both devices are ready to communicate. A fundamental requirement for most streaming methods is that the smartphone and TV are on the same local network. This means that Wi-Fi router must emit a signal that both gadgets can receive.
A common mistake users make is connecting their phone to a 4G/5G mobile internet connection while their TV is connected to their home network. In this case, the devices simply won't "see" each other. Make sure this is set up correctly in the settings. Redmi Note 9 Wi-Fi is activated and the same SSID (network name) is selected as on the TV.
It's also worth checking the software version. For the protocols to work correctly Miracast or Google Cast The corresponding service must be running on the TV. On modern Smart TVs, it's built in by default, but on older models, you may need to install an additional app from an app store.
Using the built-in "Cast" feature in MIUI
shell MIUI, installed on Redmi Note 9, is equipped with a native image output tool. This method does not require installing additional software and operates according to the standard Miracast, which is supported by most modern Smart TVs (Samsung, LG, Sony, Philips).
To activate the feature, open the control panel. Swipe down from the top of the screen to reveal the notification shade and find the "Cast" icon. If it's not on the main screen, tap the edit button (usually three dots or a pencil icon) and drag the icon to the active area. Once tapped, the system will begin searching for available displays.
When your TV's name appears on your smartphone screen, tap it. You may see a request to allow the connection on the TV screen—confirm it with the remote. After that, the image from Redmi Note 9 The entire screen will be copied to the big screen. You can switch between apps, and the image will change in real time.
☑️ Pre-broadcast check
It's worth noting that this method keeps the phone's screen on, and all notifications will be visible to viewers. If you want to watch videos in the background or use your phone for other tasks, this method may not be the most convenient due to battery drain and the constant display light.
Broadcast via the Google Home app
If the built-in function does not find the TV or works unstable, an excellent solution is to use the ecosystem GoogleProtocol Chromecast built-in Supported by thousands of TV models, it allows you to stream content or the entire smartphone screen.
To get started, you need to download and install the application. Google Home from the store Play MarketAfter installation, open the app and sign in to your Google account. The app will automatically scan your network and find compatible devices connected to your router.
Select your TV from the list of devices. In the control menu that opens, click "Cast my screen." The system will warn you that everything that happens on your screen will be recorded and will ask for permission. After confirmation, mirroring will begin.
⚠️ Please note: When streaming via Google Home, you may experience a slight image lag of 1-2 seconds. This is normal for wireless technology and is not a malfunction.
The advantage of this method is the high stability of the connection and the ability to stream content from applications that do not support direct TV streaming. In addition, Google Home Allows you to control your TV volume directly from your smartphone interface.
What should I do if Google Home can't see my TV?
Make sure Chromecast is enabled on your TV. Restart your router. Check if the router is configured for Client Isolation, which prevents devices from seeing each other on the network.
Third-party screen mirroring apps
In situations where standard methods fail, or the TV isn't a Smart TV (but is connected to an Android Box), third-party apps can help. They often offer advanced functionality, allowing you to stream images even to devices without built-in Wi-Fi, using intermediate gateways.
One of the most popular solutions is the application Web Video Caster or TV CastThese programs scan the network for DLNA and Chromecast devices. Their unique feature is that they can send a specific video file or stream from the browser instead of the entire screen, which reduces the load on the processor. Redmi Note 9.
Another option is to use universal utilities like Screen Mirroring & TV CastThey create a virtual display driver and attempt to emulate a standard signal understood by the TV. This can help connect older TV models that don't support modern protocols. Miracast.
When using third-party software, it's important to pay attention to the permissions the app requests. To function properly, it will require access to the local network, a microphone (for audio transmission), and access to multimedia.
| Application | Connection type | Presence of advertising | Stability |
|---|---|---|---|
| Google Home | Chromecast | No | High |
| Built-in broadcast | Miracast | No | Average |
| Web Video Caster | DLNA / Cast | Yes (in free) | High |
| TV Cast for Samsung | Proprietary | Eat | Depends on TV |
Streaming videos from YouTube and online cinemas
A scenario where the user only needs to display video, rather than the entire smartphone screen, deserves special attention. This is the most energy-efficient option, as the phone acts as a remote control, and the data stream goes directly from the server to the TV via Wi-Fi.
In applications YouTube, Netflix, IVi or Okko The player interface features a special icon—a rectangle with waves in the corner. Clicking it will display a list of available devices. Selecting your TV will start playing the video directly on the big screen.
The main advantage of this approach is the ability to turn off the smartphone screen or minimize the application. Redmi Note 9 It will stop wasting energy on image rendering, and you can use it for messaging or browsing without interrupting your movie watching on TV.
It's important that your phone and TV app accounts (if authorization is required) are synced or have access to the same content. Some services may limit stream quality when streaming to external devices if your subscription doesn't allow it.
Troubleshooting and Common Mistakes
Despite the simplicity of the technology, users Redmi And Xiaomi may encounter a number of difficulties. Often, the problem lies in the power saving settings. Aggressive optimization MIUI may "kill" the background broadcast process, considering it useless.
To avoid connection interruptions, go to battery settings, find the app you're using to stream (such as Google Home or the system service "Cast"), and set it to "Unlimited." Also, disable power saving while watching.
Another common issue is audio and video desync. This often occurs when the Wi-Fi channel is overloaded. Try rebooting your router or switching devices to a different frequency. If you're using the 2.4 GHz frequency, interference from neighboring networks can significantly impact stream quality.
⚠️ Note: If the image is choppy or has low resolution, check your internet speed and the distance between your router and devices. Walls and furniture can weaken the signal.
In some cases, resetting your smartphone's network settings can help. This will delete saved Wi-Fi passwords, but it often resolves issues with device discovery protocols. After resetting, you'll need to re-enter your home network password.
Why doesn't the TV detect the Redmi Note 9?
Most often, the devices are on different subnets or client isolation is enabled on the router. Also, check that your phone isn't in airplane mode or using mobile data instead of Wi-Fi. Make sure Screen Sharing or a similar app is open on your TV.
Is it possible to connect a phone to a regular (non-Smart) TV?
Wirelessly — no, unless your TV has an HDMI port and a separate set-top box (TV Box, Chromecast, Apple TV). A regular TV will require an adapter that plugs into the HDMI port to create a signal receiving point.
Does the phone get very hot when broadcasting?
Yes, when actively using the Wi-Fi module and the processor for video encoding, heat is inevitable. We recommend removing the case for better heat dissipation and avoiding playing heavy games while streaming unless absolutely necessary.
Is there any audio delay when connected via Wi-Fi?
A small amount of latency is always present, typically between 100 ms and 2 seconds. While this isn't noticeable for watching movies, it can be critical for real-time gaming. In such cases, it's best to use a wired connection or a Bluetooth adapter with aptX Low Latency.