Modern smartphones like the Redmi 12 Pro have become powerful multimedia centers capable of playing content in high resolution. However, the screen of a mobile device, even with a diagonal of 6.67 inches, often seems not large enough to comfortably watch movies or show photos to friends. Owners of Xiaomi equipment and LG TVs often wonder how to combine these devices for maximum visual pleasure.
Fortunately, the Android and webOS ecosystems (LG TV operating system) offer many synchronization options: You can use both wireless protocols like Miracast and DLNA, as well as proven wired solutions. Broadcasting your TV into a huge smartphone monitor, which is especially true for gamers and theater enthusiasts.
In this guide, we will take a look at all the connectivity options available, from standard system functions to specialized applications. We will also look at the typical problems users face and how to solve them. Redmi 12 Pro’s readiness to work in conjunction with a smart TV depends on the correct network settings and software version.
Before starting the procedure, make sure that both devices are on and in good condition. A stable connection is the foundation of successful synchronization, so it's worth checking your router's performance beforehand. If you plan to use a wired method, make sure you have a compatible adapter.
Wireless connection through the built-in function "Translation"
The easiest and fastest way to bring a Redmi 12 Pro to an LG Smart TV is to use a built-in MIUI (or HyperOS) tool, which is based on the Miracast standard, which is supported by most modern LG TVs without the need to install additional software. You don't need cables or complex settings to get started.
The first step is to make sure that your smartphone and TV are connected to the same Wi-Fi network. This is a critical condition: if one of the devices is running over the mobile Internet or is connected to the guest network, detection will be impossible. Open the control panel on your smartphone, swipe from top to bottom, and find the icon "Translation" (Cast). If the icon is not, click on a pencil or three dots to edit the menu and add it.
Once activated, the smartphone will start searching for available devices on the local network. On the LG TV screen, you may receive a request for permission to connect, which you need to confirm with the remote control. On the list on your smartphone, select a model of your TV. The image from the phone will instantly appear on the large screen.
It's worth noting that when you use wireless broadcasting, signal delay can vary depending on the quality of the Wi-Fi router. This is not critical for watching videos, but in dynamic games, lag can be noticeable.
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For Miracast to work smoothly, both devices must be on the same Wi-Fi subnet, otherwise the device search will not yield results.
Using the LG ThinQ application for management and broadcasting
The official LG ThinQ app (formerly LG TV Plus) provides advanced TV control and media content streaming capabilities. Unlike simple screen duplication, this method allows you to transfer files directly, freeing your smartphone for other tasks.
Once installed, launch the app and log in to your LG account (or create a new one). The program will automatically scan the network and find a compatible TV. Follow the on-screen instructions for pairing devices: the confirmation code may appear on the TV, a method that is especially convenient if you want to control the TV from your phone or transfer photos and videos from the gallery.
The app's functionality allows you not only to stream media files, but also to use your smartphone as a remote control. You can type text on your phone's keyboard to type in YouTube or Netflix searches on your TV, which greatly speeds up the process. In addition, LG ThinQ allows you to customize image and sound settings.
- 📱 Full management of the webOS interface from the smartphone screen.
- 🖼️ Easy sorting and transfer of photos from the Redmi Gallery.
- ⌨️ Virtual keyboard for quick text entry in search engine TV.
- 🔊 Volume adjustment and signal source switching.
If the app can't see the TV, check the firewall settings on the router. Sometimes security systems block local connections between devices from different manufacturers, in which case, try temporarily disabling Client Isolation in the router settings.
Why does LG ThinQ app not work?
Streaming videos via Google Home and Chromecast
Many of LG’s modern TVs have built-in support for Chromecast built-in technology, which allows you to stream content from apps like YouTube, Netflix, Disney+ and others directly from the Internet servers, bypassing the smartphone’s processor, and is ideal for watching 4K video without loading on the Redmi 12 Pro battery.
To work with this method, make sure your smartphone has a Google Home app installed and updated. Open it and find your TV in the list of devices. Click on the "Cast my screen" button if you want to duplicate the entire interface, or use the broadcast button inside a specific video player (the wave rectangle icon).
The main advantage of this method is that it's independent of the power of your smartphone, so even if you get an incoming call or you turn off the app, the video playback on the TV will not be interrupted, and the picture quality is often higher than when you use Miracast, because the TV itself decodes the video stream.
In some cases, you may need to log in to your Google Play account on your TV. Also make sure that the Google Play services on your Redmi 12 Pro are working correctly and have the necessary permissions. If the broadcast button in the app is gray, check if the devices are connected to the same Wi-Fi network.
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When broadcasting via Chromecast, the smartphone acts only as a remote control, so you can use it for calls or games without interrupting the video on TV.
Wired connection via USB-C to HDMI adapter
For users who are critical to maximum stability and minimal signal latency, a wired connection is the best choice. Redmi 12 Pro features a USB Type-C port, which, however, does not support video output directly (does not have DisplayPort Alt Mode mode).
⚠️ Attention: Standard adapter USB-C on HDMI The Redmi 12 Pro may not work as the port USB 2.0 in this model does not transmit video directly. It requires an adapter with DisplayLink technology and installing the corresponding driver on the smartphone.
If you find a compatible adapter with DisplayLink, the connection process is simple: insert the adapter into the charging port, connect the HDMI cable from the adapter to the TV, and select the appropriate signal source (HDMI 1, HDMI 2, etc.) on the LG remote.
The wired method ensures no interference from microwave ovens, Bluetooth devices or neighbourhood Wi-Fi networks, making it preferable for presentations or displaying important content where communication breaks are not tolerated, but mobility is limited by the length of the cable.
☑️ Checking before buying an adapter
Comparison of Connection Methods and Their Characteristics
The best way to connect depends on your current tasks and conditions of use, and to help you decide, we have prepared a basic method comparison table that will help you weigh the pros and cons of each option.
| Method | Image quality | Delay (Latency) | Battery consumption | Stability |
|---|---|---|---|---|
| Miracast (Translation) | High. | Medium | High-pitched | Depends on Wi-Fi. |
| Google Cast | Maximum (4K) | Low. | Low. | Tall. |
| LG ThinQ (DLNA) | High. | Low (for photo) | Medium. | Tall. |
| USB-C to HDMI | Maximum. | Minimum | Charging is coming. | Absolute. |
As you can see from the table, Google Cast is the best way to watch movies from online cinemas. If you need to show a presentation or play a mobile game on a large screen, you should consider a wired connection or Miracast with a good router. DLNA-The protocol is ideal for viewing personal archives of photos and videos.
Remember, wireless quality is directly dependent on your network bandwidth. If you have an old router that only works in the 2.4 GHz band, you may experience twitching images. Switching to a 5 GHz network often solves these problems.
Elimination and Optimization Tips
Even when set up correctly, there can be technical difficulties. Often, users are faced with a situation where the TV can not see the smartphone, or the connection is constantly broken. First of all, check the relevance of the firmware on both devices.
If the Redmi 12 Pro doesn't find the TV, try rebooting both devices and the router. Sometimes it helps to reset the network settings on your smartphone. It's also worth checking if the router is running Guest Network mode, which isolates the devices from each other.
- 🔄 Reboot the router by turning it off for 10 seconds.
- 📶 Switch Wi-Fi from 2.4 GHz to 5 GHz for faster speeds.
- 🛡️ Turn it off. VPN If you are using a smartphone, it will block the local network.
- 🔋 Make sure your phone’s power saving mode does not limit Wi-Fi performance.
In some cases, antivirus programs or memory cleaners may block network connections. Add the broadcast app to the exclusion list. Also check that LG's TV has enabled LG Connect Apps or a similar option in network settings.
⚠️ Attention: Using third-party apps to broadcast with ads can overheat your smartphone and cause artifacts to appear on the screen.