How to display an image from your phone to your TV Xiaomi Redmi 9: all ways + error solving

Broadcasting photos from Xiaomi Redmi 9 to the big screen of the TV is a challenge faced by every second owner of this smartphone. Despite the seeming simplicity, the process can be complicated by the lack of necessary cables, incompatibility of protocols or hidden settings in the smartphone. MIUI. In this article, we will analyze all the current methods of image transfer - from the classical to the traditional. HDMI-Connect to wireless technologies like Miracast and Google Cast, and solve common errors like “no signal” or “device not found".

The Redmi 9’s feature is that it lacks native HDMI-alt-mode support via USB-C, which limits the choice of adapters. In addition, depending on the TV model (e.g. Xiaomi Mi TV 4S vs Samsung QLED), different synchronization protocols may be required, and we tested each method on real devices and collected checklists for quick diagnosis of problems.

If you need to show photos from your vacation or give a presentation, but only your phone and TV are on hand, this guide will help you choose the best way in less than 5 minutes. For tech-savvy users, we have added a section with the ADB setting to force Miracast on uncertified TVs.

⚠️ Important: Before connecting, check that the signal reception mode is turned on on on the TV (for example, HDMI-CEC Xiaomi Redmi 9 should be turned off power saving mode for stable data transfer.

1. a wired connection through HDMI-Adapter (the most stable method)

This method guarantees minimal latency and maximum image quality (up to 4K@30Hz if TV supports). Redmi 9 will require an active USB-C → HDMI adapter with DisplayPort-alt-mode support (passive adapters do not work!).

Suitable adapter models:

• 🔌 Baseus USB-C to HDMI (model CAHUB4IN1-C01) — tested on the Redmi 9 exiting 1080p@60Hz.
• 🔌 UGREEN USB-C to HDMI 4K (30350 – Supports sound through the HDMI.
• 🔌 Original Xiaomi adapter (article) MDZ-23-DA) — optimized MIUI, but rarely found on sale.

Step-by-step:

1. Connect the adapter to the USB-C port on Redmi 9.
2. Connect. HDMI-cable with adapter and TV (select the appropriate TV input).
3. On the phone will appear a notification “Ambient display is connected” – tap it and select the screen Mirror or Extension mode.
4. If the image does not appear, go to Settings → Display → HDMI Output Mode and set the resolution manually.

The adapter supports DisplayPort-alt-mode |

HDMI cable version 1.4 or higher |

The right signal source is selected on TV |

The phone has "Do Not Disturb" mode disabled"-->

⚠️ Note: if after connecting on the TV screen only the background without icons is displayed, then the adapter does not support the transmission of the interface. MIUI. Solution – Enable the Developer Mode and activate the Debugging option USB, Then restart the phone.

2. Wireless transmission via Miracast (without router)

Miracast is a wireless screen transmission standard built into Xiaomi Redmi 9 and most modern TVs, an advantage of which is that you don’t need an internet or router, but the image quality depends on the distance between the devices (optimally up to 5 meters).

How to turn Miracast on Redmi 9:

1. Open Settings → Connections and Sharing → Screen Transfer.
2. Slip on the Wireless Display (or Miracast) item.
3. In the list of available devices, select your TV (e.g. Xiaomi Mi TV Stick or Samsung Q60T).
4. Confirm the connection on both devices.

If the TV is not on the list:

• 🔄 Reboot both devices.
• 📶 Make sure you have Screen Mirroring on TV (on Xiaomi) TV It's the settings. → Network → Miracast).
• 🔧 Update your TV and phone to the latest version.

A critical feature of Redmi 9: when connected via Miracast, the sound is transmitted by default to the phone, not to TV. To redirect the audio, open the notification panel and select "Output → Wireless display".

3. Use of Google Cast (Chromecast or embedded in TV)

If your TV supports Google Cast (like Android TV or Google TV models), you can stream individual photos or the entire screen through the Google Photos or Google Home app.

Instructions for broadcasting photos:

1. Make sure your phone and TV are connected to the same Wi-Fi network.
2. Open the Google Photos app and select the image you want.
3. Slip on the Broadcast icon (the icon of the wave screen) in the upper right corner.
4. In the list of devices, select your TV.

To mirror the entire screen:

1. Install the Google Home app with the Play Market.
2. Open the app, select your TV and tap Broadcast my screen.
3. Confirm the start of the broadcast (latency is ~2 seconds).

⚠️ Note: When streaming via Google Cast, some apps (such as Netflix or YouTube) may block image output due to copyright protection (HDCP). Solution – Use screen mirroring instead of streaming specific content.

4. Transmission via USB-OTG and flash drive (for TV without Smart-functions)

If your TV doesn’t support HDMI or wireless protocols (like the older LG or Sony Bravia 2015 models), you can use an intermediate storage stick or external drive.

What you need:

• 📁 USB-OTG Adapter (e.g., Xiaomi Type-C to) USB).
• 💾 File system flash drive FAT32 exFAT.
• 📱 Files Appendix (built-in to MIUI).

Step-by-step algorithm:

1. Connect the flash drive to the phone via USB-OTG.
2. Open the Files app, find the photos you need and copy them to a flash drive (DCIM → Camera folder).
3. Remove the flash drive and connect it to USB-television-port.
4. On the TV remote, press the Source (or Input) button and select USB.

🔹 Tip: if the TV does not see the flash drive, format it into FAT32 via phone: Settings → Warehouse → Format as internal (only for empty drives!).

5. Solving typical connection problems

Even with the right setup, Redmi users 9 We've got the tops.-5 problems and ways of eliminating them:

1.The TV doesn't find the phone through Miracast

• 🔧 Check if Wi-Fi Direct is enabled on your TV (on Xiaomi) TV: Settings → Network → Wi-Fi Direct).
• 🔄 Restart the router – sometimes interfere with the settings of the router.
• 📱 On the phone, turn off modem modem (Settings) → Network → Modem mode).

2.There is no sound when connected via HDMI

• 🔊 Check that the phone settings selected the output of sound on HDMI: Settings → Sound. → Sound output → HDMI.
• 🔌 Try another one. HDMI-cable (some cheap cables don't transmit audio).
• 🔧 Update the phone firmware – in older versions MIUI 12 was a bug with audio through USB-C.

3. Image on TV blurred or with artifacts

• 🎨 Manually set screen resolution: Settings → Display. → Permission HDMI → choose 1920×1080.
• 🔌 Replace. HDMI-Cable certified (e.g. Belkin UltraHD).
• 🔄 Turn off Adaptive Brightness on your phone (Settings) → Display).

💡

If you connect through Miracast, the phone screen goes out, go to Settings → Battery → Sleep Mode and select Never for the option “Switch off screen when connected to an external display”.

4.The phone overheats during broadcasting

This is a typical problem for the Redmi 9 due to the weak cooling system.

• ❄️ Close all background applications before connecting.
• 🔋 Connect your phone to charging (preferably original) 18W-block).
• 📉 Reduce the brightness of the screen to 50%.

6.Alternative methods: DLNA and third-party applications

If standard methods don't work, you can use DLNA protocols or specialized applications.

Method 1: LocalCast application (for DLNA)

1. Install LocalCast from the Play Market.
2. Open the application and allow access to the files.
3. Select a photo and tap the Cast icon (TV icon).
4. In the list of devices, select your TV (must support DLNA).

Method 2: ApowerMirror (for mirroring)

This app allows you to broadcast the screen even to non-Smart TVs via USB or Wi-Fi:

1. Install ApowerMirror on your phone and computer (if you need an intermediate PC).
2. Connect both devices to the same Wi-Fi network.
3. Run the app on your phone and select Mirror on PC/TV.
4. Scanner. QR-code PIN-pairing.

⚠️ Note: Apps like ApowerMirror can collect data about your device. → Annexes → ApowerMirror → Permissions and disable unnecessary (e.g. access to contacts).

7.Set up Miracast via ADB (for advanced users)

If your TV is not certified for Miracast (such as some Hisense or TCL models), you can force support to be enabled via ADB. This method requires an unlocked bootloader and developer rights.

Instructions:

1. Activate Developer Mode on Redmi 9: go to Settings → About Phone and tap on MIUI Version 7 times.
2. Enable USB debugging in Settings → Additional → For developers.
3. Connect your phone to your PC and execute the command: adb shell settings put global hidden_wireless_display_certification 1
4. Reboot your phone and reconnect via Miracast.

🔹 Note: After this setup, the phone will try to connect to any Miracast devices, which may cause security issues:

adb shell settings put global hidden_wireless_display_certification 0

💡

Use it. ADB-The method is only used if other methods fail. Wrong commands can cause the system to fail.

FAQ: Frequent questions about Redmi connection 9 television-to-TV