Modern Xiaomi smartphones are not just devices for calls, but full-fledged multimedia centers. FHD+-Display and powerful processor MediaTek Helio G85 It's great at playing movies in high resolution. But what if you want to watch a movie on a big screen? Connecting your phone to your TV opens up streaming services (Netflix, KinoPoisk) HD, YouTube) directly from the smartphone screen, without the need to buy additional consoles.
In this article, we will analyze all the current ways to connect Redmi Note 9 to TVs of different brands - from wireless technologies (Miracast, DLNA) to the wired solutions through HDMI-Adapter. We'll focus on the nuances that are often overlooked in standard instructions: why an image can slow down, how to avoid sound desynchronization, and what to do if the TV can't see the phone. You'll also find a comparative table of methods for speed, quality, and ease of setting.
If you’ve tried to connect before and encountered errors like “Unable to connect to Miracast” or “Device is not supported”, here you will learn how to fix them. And for owners of Xiaomi Mi TVs, we have prepared an exclusive life hack to accelerate streaming through the proprietary ecosystem – this method works 2 times faster than standard Wi-Fi Direct.
1. Wireless connection via Miracast (Screen Mirroring)
Miracast is a wireless screen transmission standard supported by most modern TVs and Xiaomi smartphones based on Android 8.0+. The advantage of the method is that there are no wires and the ability to stream content in a resolution of up to 1080p with minimal latency. However, quality depends on the stability of the Wi-Fi network and the distance between devices.
To activate Miracast on the Redmi Note 9:
- Open Settings → Connections and Sharing → Screen Transfer.
- Select Wireless Display (or Miracast in older versions of MIUI).
- Turn on the device search – the phone will start scanning the available TVs.
- Select the name of your TV from the list and confirm the connection.
On the TV, pre-activate the screen reception mode:
- 📺 Samsung: Settings → General. → External device → Screen Mirroring.
- 📺 LG: Settings → Network → Miracast/Wi-Fi Direct.
- 📺 Xiaomi Mi TV: Settings → Connections → Wireless display.
⚠️ Note: If the TV doesn't appear on the list, check if it supports Miracast.Old models (released before 2016) may require an external adapter, such as the Microsoft Wireless Display Adapter.
Telephone and TV connected to the same Wi-Fi network
Screen Mirroring is on the TV.
On the smartphone turned off the energy saving mode
Distance between devices not more than 5 meters-->
2. the wired connection through HDMI-adapter (without delay)
If you need the maximum picture quality without compression artifacts, wired method through HDMI-Adapter is the best choice. Redmi Note 9 supports video output through the port USB-C, But it's gonna take an adapter. USB-C → HDMI It's important: cheap Chinese adapters often don't transmit sound, so go for certified models (e.g. Xiaomi Mi). USB-C to HDMI).
Step-by-step:
- Connect the adapter to the USB-C port on your phone.
- Connect. HDMI-cable.
- On the TV, select the HDMI signal source (Source or Input button on the remote).
- The phone will be notified of the connection to the external display – confirm it.
Advantages of the method:
- 🎬 Permission before 4K@30Hz (adaptor-supported).
- 🔊 Transmission of sound without additional settings.
- ⚡ Minimal latency (ideal for games and movies).
⚠️ Note: When connecting through HDMI We recommend using Quick Charge-enabled charging (e.g., the original Xiaomi unit). 33W) while watching.
Why is there no HDMI image?
3. Connection via DLNA (media streaming)
DLNA (Digital Living Network Alliance) allows you to stream movies, music and photos from your phone to your TV without duplicating your screen, which is convenient if you want to keep using your phone while the movie is on TV, and it works over a local network, so both devices need to be connected to the same Wi-Fi router.
How to set up DLNA on Redmi Note 9:
- Install a streaming app like BubbleUPnP or LocalCast (available on Google Play).
- Open the app and allow access to your phone files.
- Select the file to play and press the Cast button (or Send to...).
- In the list of devices, select your TV.
On the TV, pre-activate DLNA support:
- 📺 Samsung: Settings → General. → External devices → Devices DLNA.
- 📺 LG: Settings → Network → Home network → DLNA.
- 📺 Android TV (including Xiaomi Mi TV): Install MediaHouse app UPnP/DLNA Browser.
💡
If the video slows down when transmitting over DLNA, reduce the bitrate in the settings of the player application. For example, in VLC, go to Settings → Streaming → Bitrate and set a value of 4 Mbit / s instead of automatic.
4.Using Wi-Fi Direct (direct connection)
Wi-Fi Direct allows you to connect your phone and TV directly, without a router. This is useful if you don't have Internet access or the router doesn't support Miracast. Data rates are lower than HDMI, but faster than Bluetooth.
Instructions for Redmi Note 9:
- Activate Wi-Fi Direct on your TV (see the menu items in the table below).
- On the phone, open Settings → Wi-Fi → Wi-Fi Direct.
- Select the name of your TV from the list and confirm the connection.
- Run the video playback in the app (such as MX Player) and select the Play on the...
| The TV brand | The Way to Wi-Fi Direct | Max, speed. |
|---|---|---|
| Samsung | Settings → Network → Wi-Fi Direct | Up to 25 Mbps |
| LG | Settings → Network → Wi-Fi Direct | Up to 30 Mbps |
| Xiaomi Mi TV | Settings → Connections → Wi-Fi Direct | Up to 50 Mbps |
| Sony | Settings → Network → Setting up Wi-Fi Direct | Up to 20 Mbps |
⚠️ Note: When connected via Wi-Fi Direct, the phone will not be able to use the Internet at the same time. For streaming online content (for example, YouTube), this method is not suitable - only for local files.
5. Specificity of connection to the TV Xiaomi Mi TV
Xiaomi Mi TV owners get more experience from the Mi Home ecosystem, for example, you can use Mi Share to instantly transfer the screen without settings.
Connection algorithm:
- Make sure that your phone and TV are linked to the same Xiaomi account.
- On the TV, open Settings → Xiaomi Account → Mi Share and turn on the option.
- On the phone, swipe down the notification bar and tap Mi Share (the icon with two arrows).
- Select the TV from the list - the screen transfer will start automatically.
Advantages of Mi Share:
- 🚀 Delay less than 100 ms (versus 200-300 ms for standard Miracast).
- 🔄 Automatic synchronization of sound and image.
- 📱 Support for phone control gestures (such as swipe to rewind).
💡
Mi Share only works between Xiaomi devices (phone + TV). For other brands, use standard protocols (Miracast or DLNA).
6. Solving common problems
Even with the right setup, errors can occur, and here are the most common ones and ways to fix them:
Problem 1: The TV doesn’t see the phone in the list of devices.
- ✅ Reboot both devices.
- ✅ Check if Screen Mirroring or Wi-Fi Direct is on your TV.
- ✅ Make sure your phone and TV are connected to the same network. DLNA Miracast).
Problem 2: Videos slow down or jerk.
- ✅ Close the background apps on your phone (especially instant messengers and games).
- ✅ Switch to 5 GHz Wi-Fi (if the router supports).
- ✅ Reduce the resolution of the video in the player settings (for example, with 1080p before 720p).
Problem 3: No sound when connected via HDMI.
- ✅ Check if the adapter supports sound transmission (the package should be indicated). HDMI + Audio).
- ✅ In the phone settings, select Settings → Sound. → Sound output → HDMI.
- ✅ Try another one. HDMI-cable (sometimes the problem is damaged contacts).
💡
If you connect to Miracast sound is coming from your phone, not from your TV, click on the screen transfer icon in the notification panel and select Play sound on your TV.