Smartphone Xiaomi Mi 9T It is a popular device because of the quality AMOLED-It's a display and a powerful processor, but for a comfortable viewing of movies or screen presentations, a mobile device is often not enough: Owners are often looking for ways to stream content to the big screen to turn the living room into a home theater. Fortunately, the modern Android ecosystem offers a variety of connectivity options, from wired to fully wireless solutions.
The choice of method depends on the technical characteristics of your TV and the availability of additional accessories. Wireless technology is convenient for quickly showing photos or videos from the gallery, whereas a wired connection will ensure stable signal transmission without delay, which is critical for games. In this article, we will discuss all the available methods so that you can choose the best option for your situation.
Before starting the procedure, make sure that both devices are charged or connected to the network, as active data transfer can quickly consume battery power Mi 9T. Also check the version of the operating system MIUI, as in older builds some features may not work correctly or are not in the menu.
Wireless connection via Wi-Fi and Miracast
The easiest and most common way to display an image from Xiaomi Mi 9T to a TV is to use Miracast technology or the built-in Wireless Monitor feature. This method does not require the purchase of additional cables or adapters if your TV supports Smart TV and is connected to the same Wi-Fi network as the smartphone. To start, you need to lower the notification curtain and find the Translation or Wireless Monitor icon.
If the standard Quick Access menu doesn't have the right button, you can activate it through settings. Go to Settings → Connection and Sharing → Broadcast. Once this feature is enabled, the phone will start searching for available devices within network range. The TV screen may have a request for permission to connect, which must be confirmed by the remote control.
Consider that picture quality and smoothness are directly dependent on the speed and stability of your Wi-Fi router. Using the wireless method, you can have small cursor or sound delays, which is normal for this technology. However, for viewing high-resolution video, the H.265 codec provides excellent compression without visible loss of quality.
- 📺 Make sure your TV supports Miracast or Wi-Fi Direct technology.
- 📶 Both devices must be on the same local Wi-Fi network (2.4 GHz or 5 GHz).
- ⚡ The function can be called Screen Mirroring, Smart View, (on Chinese firmware).
⚠️ Attention: When wirelessly connected, the smartphone can noticeably heat up, since the Wi-Fi module operates in high load mode.
Use of HDMI adapter and USB-C adapters
For those with maximum image quality and minimal latency, a wired connection is ideal. Xiaomi Mi 9T features a USB Type-C port that supports video transmission, but a special adapter or docking station will be required to connect to the TV.
The connection process is as simple as possible: insert a USB-C connector into the smartphone connector, and connect the HDMI cable to the free port of the TV. After that, on the remote control, click the signal source selection button (usually designated as SOURCE or INPUT) and select the appropriate port, for example, HDMI 1. The image from the phone should automatically duplicate on the large screen.
The Mi 9T feature is the ability to use desktop mode when connected via HDMI, although it is not as advanced as in the flagship lines of other brands.However, you will be able to play content in resolutions up to 1080p or 4K (depending on the adapter's capabilities), while the smartphone is charged from an external power source through an additional port in the dock.
- 🔌 Use only certified video-enabled cables.
- 🔋 Connect the charger to the adapter so that the battery does not sit down while viewing.
- 🎮 Perfect for games where instant screen response is important.
☑️ Checking before buying an adapter
Broadcasting through Google Chromecast and apps
If your TV doesn’t have Miracast built-in support but is connected to the Internet, you can use the Google Cast ecosystem. Xiaomi Mi 9T owners can stream content from supported apps like YouTube, Netflix or Yandex.Cinema directly to the TV.
For more advanced management, you can install the Google Home app from the Play Market Store, which allows you to stream the entire screen of your smartphone to Chromecast devices or Android TVs. In the application, you need to select your device, click Broadcast and confirm the action, which often works more stable than the built-in MIUI feature.
Special attention should be paid to the application-pulls and DLNA-Clients such as LocalCast or BubbleUPnP. These allow you to transfer media files stored in Mi memory. 9T, It's convenient when you want to show a photo album or run a video file in a format that doesn't play the TV's built-in player.
- 📱 The application should be installed on a smartphone and, preferably, on TV.
- 🌐 A stable internet connection is required to stream online content.
- 🎬 Video format support depends on the TV’s capabilities, not the phone’s.
⚠️ Note: When broadcasting through third-party applications, video in protected DRM-Format (for example, paid films in the HD) It can only be displayed on a black TV phone screen due to content protection policies.
Why is there no sound when connecting HDMI?
Comparison of connection methods: Characteristics table
To make it easier for you to decide on how to connect the Xiaomi Mi 9T to your TV, we have prepared a comparison table that will help you assess the advantages and disadvantages of each method depending on your needs, whether it is watching a movie, playing games or presenting.
Wired methods benefit in stability but limit mobility; wireless solutions are convenient but depend on network quality; hardware codec and data protocol choices are key to the overall picture quality.
| Connection method | Image quality | Delay (Latency) | Equipment required |
|---|---|---|---|
| Miracast / Broadcast | High (up to 1080p) | Medium (notable in games) | Smart TV, Wi-Fi router |
| HDMI adapter (USB-C) | Maximum (up to 4K) | Minimum (nearly 0 ms) | HDMI cable, USB-C adapter |
| Google Chromecast | Depends on the app. | Low (for streaming) | Dongle Chromecast or Android TV |
| DLNA applications | Original file | Missing (locally) | Client-app, Wi-Fi |
💡
For games on the big screen, only use a wired HDMI connection. Wireless methods cause input delay, which makes the control of the character uncomfortable and late.
The solution: problems and their elimination
Despite the ease of setting up, users may encounter a variety of difficulties. It is common for the TV to not see the Xiaomi Mi 9T when trying to connect wirelessly. First of all, check if the router is running an AP Isolation mode that prevents devices on the network from seeing each other.
If there is an image but no sound, check the media settings. In some cases, MIUI does not switch the audio output automatically. Go to the Bluetooth and connected device settings to force you to select the output of the sound to an external device.
In the case of HDMI-The adapter screen may remain black.This often indicates a shortage of power. USB-C mi 9T It may not provide enough current to operate the active signal converter. USB-port of the adapter itself, if it has such a connector.
- 🔄 Restart your router if the list of devices is empty when searching.
- 🔇 Check if the TV is on Mut mode or low thunder.
- 🔌 Use the cables. HDMI Version 2.0 and higher to support 4K.
⚠️ Note: Cheap Chinese Adapters USB-C to HDMI They often don't have an internal conversion chip and only work like normal charging cables. Make sure that the product description says it supports video output).
💡
The quality of wireless broadcasting depends on the load of the Wi-Fi channel. If there are many devices on the network, switch the router to 5 GHz to free up the air.
Configure the display and sound parameters
Once successfully connected, it is important to properly adjust the output settings so that the picture occupies the entire screen without cutting edges. In the TV settings, find the display mode and select Screen Size, Just Scan or 16:9 to avoid stretching the image. The Mi 9T has an aspect ratio of 20:9, so there may be black bars on the sides, which is the norm for preserving proportions.
To improve sound quality, you can use external audio systems. If the TV is connected to the sound bar or receiver via optical output or ARC, make sure that the Dolby Digital or PCM output format is selected in the smartphone sound settings. This will unlock the potential of Xiaomi's built-in codecs.
Keep your energy savings in mind. When you're broadcasting a long time, turn off the automatic lock in the lock screen settings so that your phone doesn't go out and interrupt the connection. AMOLED-The matrix will consume energy even if the image is duplicated on TV.
- 🖥️ Adjust the resolution manually in the engineering menu if the picture is fuzzy.
- 🔊 Use external speakers for better sound, as TV speakers are often flat.
- 🔒 Turn off sleep while presenting or watching a movie.