Modern smartphones such as Redmi 7AWhile mobile phones have a fairly powerful screen, a 5.45-inch diagonal is often insufficient for viewing family photos or movies. Fortunately, technology makes it easy to stream images from a mobile device to a large TV screen without the need for unnecessary wires. This is especially convenient when you need to show a presentation to colleagues or watch a movie on your home theater.
The main connection method in this case is based on technology Wi-Fi Direct or built-in broadcast protocols such as Miracast And Google CastYour router acts as an intermediary in this connection, creating a unified local network through which the phone and TV exchange video streams. It's important to understand that data transfer speed directly depends on the quality of the wireless network signal.
Before you begin setup, make sure both devices are turned on and in a strong signal reception area. It is critical that both the Redmi 7A and Smart TV are connected to the same Wi-Fi network, and not to a guest or router mode. Otherwise, the devices simply won’t “see” each other in the list of gadgets available for connection.
Checking compatibility and preparing equipment
The first step is to verify the technical capabilities of your TV. Not all TV models, even those with a Smart set-top box, support native over-the-air screen sharing. If your TV is several years old, it may require external adapters, such as Chromecast or Apple TV, although for Android smartphones this is required less often.
To the owners Redmi 7A lucky, because the shell MIUI has built-in wireless image streaming functionality. You don't need to install complex third-party apps if your TV supports the standard. Miracast or DLNACheck your TV's settings menu to see if these features are available, usually under the Network or Connections section.
It's also worth making sure your software is up to date. Outdated firmware versions may contain bugs that interfere with a stable connection. Go to your phone's settings and check for system updates, as engineers Xiaomi Regularly improve the stability of communication modules.
⚠️ Attention: If you're using a dual-band router, make sure both devices are connected to the same frequency (either both to 2.4 GHz or both to 5 GHz). Different frequencies can create a virtual separation between the devices, making them difficult to detect.
Using the built-in "Cast" feature in MIUI
The easiest way to connect Redmi 7A to the TV - use the standard system tool. In the shell MIUI This feature is often hidden in the advanced settings menu or moved to the control center. It works based on the protocol Wi-Fi Display, which is an analogue of Miracast.
To activate it, pull down the notification shade and look for the "Cast" icon. If it's not on the main screen, tap the three dots or the pencil icon to edit the panel and drag the button to the visible area. Once tapped, the phone will begin searching for available devices on the local network.
When your TV's name appears in the list, tap it. A confirmation prompt may appear on the TV screen. Use your remote control to confirm the connection. Your smartphone's screen will then be mirrored on the larger display.
- 📱 Open the notification shade and find the "Broadcast" button.
- 📡 Wait until your phone finds your TV in the list of devices.
- 🖥️ Confirm the connection on the TV screen using the remote control.
- ⚙️ If necessary, change the screen orientation in your phone settings.
☑️ Checklist before connecting
It's worth noting that when using built-in broadcasting, the phone's screen stays on and the audio is also duplicated. This can lead to rapid battery drain. Redmi 7A, so it is recommended to keep the device connected to charging during long viewing periods.
Setup via the Google Home app
If the built-in function MIUI If your TV doesn't find your device or it's unstable, the best solution is to use an ecosystem. GoogleAlmost all modern TVs have built-in support. Chromecast or compatible with it. To do this, you will need to download the official app. Google Home from the store Play Market.
After installing the app, launch it and sign in to your Google account. The program will automatically scan the network and find available display devices. If your TV is detected correctly, you'll see its card on the app's main screen.
Click on the TV card and then select the "Cast my screen" button. The system will warn you that the entire screen content, including notifications, will be cast. Confirm the action, and the image from Redmi 7A will appear on TV.
| Parameter | Built-in MIUI broadcasting | Google Home (Chromecast) | Third-party applications |
|---|---|---|---|
| Stability | Average | High | Depends on the application |
| Delay | Low | Average | High |
| Picture quality | HD | Full HD / 4K | HD |
| Battery consumption | High | Average | High |
Why might Google Home not work?
If the Google Home app doesn't detect your TV, it's possible that AP (Client Isolation) is enabled on your router. This feature prevents devices on the same Wi-Fi network from communicating with each other. To resolve this, go to your router settings (usually at 192.168.0.1 or 192.168.1.1) and disable "AP Isolation" or "Client Isolation" in the wireless network section.
Streaming content from YouTube and online cinemas
Video streaming from specific applications, such as YouTube, Netflix or iviIn this case, technology is used DLNA or proprietary streaming service protocols, which is much more efficient than simple screen mirroring.
When you tap the broadcast icon (rectangle with waves) inside the app YouTube On your phone, the video starts loading and playing on the TV itself. In this case, the smartphone only acts as a remote control. This reduces the load on the processor. Redmi 7A and saves battery power.
Playback quality in this mode is usually higher because the TV buffers the stream directly from the internet, bypassing the phone. However, this requires the TV app to be logged in to the same account or connected to the same network.
⚠️ Attention: When streaming via YouTube, some TV models may experience audio and video desync. If this occurs, try pausing the video for 5 seconds and then restarting it to clear the buffer.
Using third-party apps for broadcasting
In cases where standard methods do not work, specialized applications from Google PlayThe leaders in this niche are Web Video Caster, TV Cast And Screen MirroringThey can even find "old" TVs that don't support modern protocols.
The principle of operation of such programs often involves installing the server part (the application) on the TV itself. You download the application to Redmi 7A, then find it in the TV app store (for example, LG Content Store or Samsung Apps) companion application with the same name.
Once paired via a QR code or digital passcode, the phone gains full access to media files on the TV. This allows you to stream not only videos from your browser, but also personal photos, videos from your gallery, and even documents.
- 📥 Download the broadcast app to your phone and TV.
- 🔗 Link devices by scanning the QR code on the TV screen.
- 📂 Select a file from your phone's gallery to display on the screen.
- ▶️ Control playback using your smartphone.
However, it's worth remembering that free versions of these apps often contain ads that can interrupt viewing. Paid versions have no restrictions, but be sure to check compatibility with your specific TV model before purchasing.
Troubleshooting and optimizing your connection
Even with the perfect setup, problems can still arise: choppy video, out-of-sync audio, or sudden connection drops. Most often, this is due to congestion on the Wi-Fi channel or a weak signal. Redmi 7A supports the 802.11n standard, which is sufficient but not excessive for 4K streams.
Try rebooting your router by simply unplugging it for 10 seconds. This will clear the device's cache and select a less congested connection. It's also recommended to close background apps on your phone that may be consuming bandwidth, such as torrents or cloud syncing apps.
If the image is choppy, try lowering the output resolution in the streaming settings (if available) or moving your phone closer to the router. Metal obstacles and microwave ovens can cause significant interference in the 2.4 GHz band.
⚠️ Attention: Smart TV interfaces and MIUI mobile apps are updated regularly. Button locations and menu item names may differ from those described in the instructions. Always consult the manufacturer's latest manuals if you can't find the option you need.
Frequently Asked Questions (FAQ)
Is it possible to connect Redmi 7A to a TV without Wi-Fi?
Yes, but this will require a special adapter that plugs into the TV's HDMI port (for example, a Miracast-enabled set-top box), which will create its own access point. Alternatively, you can use a USB-C to HDMI cable, but Redmi 7A does not support video output via USB (MHL/Alt Mode), so the wired method will not work for this model without complex converters.
Why does the phone see the TV, but says “Connection error”?
This is most often caused by a mismatch in encryption protocol versions or a temporary glitch in the router's DHCP server. Try forgetting the Wi-Fi network on your phone and reconnecting using the password.
Does screencasting affect image quality in games?
Yes, input lag during wireless streaming ranges from 100 to 300 ms. While this isn't noticeable for strategy games or watching videos, it can be virtually unplayable for fast-paced shooters or racing games.
Does sharing photos from the gallery consume internet traffic?
No, transferring local files (photos and videos from your phone's memory) doesn't consume any data; the data is transferred directly within your home network. Data is only used to manage the connection and load app interfaces.