Do you want to bring the Xiaomi Redmi 9 screen to a large TV to show photos, play a game or stream a movie? There are at least 5 working ways to connect, from wired HDMI to wireless technologies like Miracast or DLNA. The choice of method depends on the model of your TV, the availability of additional adapters and even the version of the firmware of your smartphone.
In this article, we will discuss all the current synchronization options, including nuances for TVs of different brands (Samsung, LG, Sony, Xiaomi TV), pay special attention to problems with image latency when wirelessly connected, they can be solved by changing the settings in the Developer or updating the adapter drivers.
1. Wired connection via HDMI (the most stable way)
If you want the best image quality without delay, use it. HDMI-Redmi 9 will require an adapter with a USB-C on HDMI (Or Micro-USB, if you have a model with a plug like this. HD — Cheap Chinese options may limit the resolution to 720p.
How to connect:
- 🔌 Buy a certified adapter (recommended by Xiaomi) USB-C to HDMI or Baseus).
- 📺 Connect one end of the cable to the TV, the other to the adapter inserted into the smartphone.
- 🔄 On the TV, select the source of the signal (HDMI 1/2 remote).
- 📱 Redmi 9 may be asked to allow media transfers – confirm.
⚠️ Note: When connecting through HDMI Smartphone will discharge faster – use a charger with power from 18W, port-connected USB-PD. If the image doesn’t appear, check if your TV supports it. MHL (Mobile High-Definition Link – Older Samsung models (until 2016) may require separate MHL-adapter.
Buy a 4K adapter (if you need Ultra HD)
Check the version. HDMI-port-television (2.0 for 4K@60Hz)
Turn off the energy saving mode on the smartphone
Make sure the cable is not damaged (try another one)
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2. Wireless screen duplication over Miracast (without router)
Miracast is a wireless screen standard built into Android and most modern TVs, and the main advantage is that you don't need an Internet or router, you can connect directly between devices, but on Redmi 9, this feature can be hidden or unstable due to MIUI optimizations.
Instructions for connection:
- On your TV, activate Miracast (on the Network menu → Screen Mirroring or Wireless → Screen Duplication).
- On Redmi 9, open Settings → Connections and Sharing → Screen Transfer.
- Select your TV from the list of available devices.
- Confirm the connection on both devices (may be required) PIN-code).
⚠️ Attention: On some firmware MIUI 12/13 Miracast is disabled by default. To activate it, you need to:
- Go to Settings → About phone and 7 times click on the version of MIUI (activated the developer mode).
- Back to the settings → Additional → for developers.
- Find the Wireless Display item and turn it on.
If the image is slowing down or tearing, try:
- 📶 Reduce the resolution of the smartphone screen to 720p display-setting.
- 🔄 Reboot both devices.
- 🔌 Connect your smartphone to charging (at low battery level) MIUI limit productivity).
3. Media broadcasting by DLNA (for films and music)
DLNA is a protocol for transferring media files (video, photos, music) over a local network, unlike Miracast, it doesn't duplicate a screen, but only broadcasts content through special applications, which is suitable if you need to show a movie or photos without mirroring.
How to set up:
- 📱 Install an app on Redmi 9 for DLNA (For example, BubbleUPnP or LocalCast).
- 📺 Make sure your TV is connected to the same Wi-Fi network as your smartphone.
- 🔍 In the application, select a file to broadcast and specify the TV as the output device.
⚠️ Note: Some TVs (e.g., TVs, LG webOS) requires preconfiguration DLNA-server-on-menu → Media Sharing. If files are not playable, check supported formats — Redmi 9 can encode video into HEVC (H.265), The one that not all TVs understand.
What formats does DLNA support on Xiaomi Redmi 9?
4. USB connection (to view files)
If your TV supports media playback with USB-So you can plug in Redmi 9 as a flash drive, and this is not a screen transfer, but it allows you to view photos, videos and listen to music directly from the TV.
Instructions:
- Connect your smartphone to your TV through USB-Cable (use the original Xiaomi cable for stability).
- On the smartphone screen, select File Transfer (MTP) mode.
- On the TV, open the Multimedia or USB menu and select the file you want.
⚠️ Samsung TVs older than 2018 may not recognize Redmi 9 as a drive due to restrictions MIUI. In this case:
- 🔄 Reboot your smartphone and reconnect.
- 📁 Copy files to a separate flash drive and connect it to the TV.
- 🔧 Turn on Debugging. USB Developer’s Settings (Sometimes Helps).
5.Using Wi-Fi Direct (an alternative to Miracast)
Wi-Fi Direct is a direct connection technology for devices without a router, faster than Bluetooth, but slower than Miracast, and suitable for file transfer or streaming content if the TV does not support DLNA.
How to connect:
- 📺 On the TV, activate Wi-Fi Direct (on the Network menu) → Wi-Fi Direct).
- 📱 On Redmi 9, open Settings → Wi-Fi → Wi-Fi Direct.
- 🔍 Select the TV from the list and confirm the connection.
- 📤 Use the application (e.g. Send Files to) TV) media transmission.
⚠️ Note: When connected via Wi-Fi Direct, the smartphone will not have access to the Internet while the connection is active. Also, there may be delays when playing video - it is better to use for streaming movies. DLNA or HDMI.
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If the TV doesn't find your smartphone via Wi-Fi Direct, try turning off the Responsive Wi-Fi feature in your network settings on Redmi 9.
Comparison of all methods of connection
| Method | Quality. | Delay. | Difficulty | Internet is required | Suitable for |
|---|---|---|---|---|---|
| HDMI | ⭐⭐⭐⭐⭐ (4K@60Hz) | No. | Low. | No. | Games, films, presentations |
| Miracast | ⭐⭐⭐⭐ (1080p@30Hz) | 100-300 ms. | Medium | No. | Screen duplication, streaming |
| DLNA | ⭐⭐⭐ (1080p) | 200-500 ms. | Tall. | Yes (local area network) | Movies, music, photos |
| USB | ⭐⭐ (depends on TV) | No. | Low. | No. | Viewing files |
| Wi-Fi Direct | ⭐⭐⭐ (720p) | 300-800 ms. | Medium | No. | File transfer |
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For high-resolution games and videos, use HDMI. For easy viewing, DLNA. Miracast is good for presentations, but it can slow down.
Solving common problems
If the connection is not working, check the following points:
No HDMI image:
- 🔌 Try another cable or adapter (cheap ones often don't support Full). HD).
- 🔄 Restart your smartphone and TV.
- 📱 Enable the Developer Mode and activate Debugging by USB.
2. Miracast doesn't find the TV:
- 📺 Update the TV firmware (on the LG Samsung is often bugged in older versions).
- 📱 Reset your network settings to Redmi 9 (Settings) → System system → Reset → Wi-Fi reset).
- 🔌 Turn it off. VPN Proxies on a smartphone – they can block local connections.
3. DLNA does not play video:
- 🎬 Convert the file to MP4 (H.264) assisted VLC HandBrake.
- 📺 Check the settings. DLNA On TV – some models limit supported formats.