Connecting Xiaomiโs smartphone to a DEXP TV opens up new possibilities, from watching movies on the big screen to managing presentations from the phone. However, many users face compatibility problems, especially if the TV does not support modern protocols like Miracast or Google Cast. In this article, we will discuss all the current ways of connecting โ from wireless to wired โ and also tell you how to avoid typical errors (for example, no sound or black screen).
It is important to consider that DEXP TVs often run on Android TV or proprietary firmware, which affects the available features. We tested the instructions on Xiaomi 13 Pro, Redmi Note 12 and DEXP H24D7000, DEXP L32F7000T TVs. If your equipment is older than 2018, some methods (for example, Wireless Display) may not work โ for this we will provide alternative solutions.
Before you start, check:
- ๐ Android version on the phone (minimum required Android 5.0 for Miracast, Android 8.0 for Google Cast).
- ๐บ Model TV set DEXP โ Some budget series do not support smart features.
- ๐ Updates on both devices (especially if the connection has previously failed).
If youโre not sure about your TV model, look for it on the back sticker or in the Settings menu โ About TV. For Xiaomi smartphones, the way: Settings โ About Phone โ MIUI version.
1. Connection via Miracast (Wireless Display) - wireless mirroring
The most versatile way for modern devices is Miracast technology, built into Android and many DEXP TVs. It allows you to broadcast the phone screen wirelessly, but requires support from TV. Check whether your model has a Wireless Display or Screen Mirroring feature.
Instructions for Xiaomi:
- Open Settings โ Connection and Sharing โ Screen Transfer.
- Press Wireless Display (on some firmware - Miracast).
- Turn on device search. The phone will start scanning available screens.
- On TV. DEXP activate the reception mode: ๐บ Go to Settings. โ Network โ Wi-Fi Direct/Miracast. ๐ Select Screen Mirror or Wireless Display. โ Confirm the connection on both devices.
If the TV doesnโt find the phone, try:
- ๐ Reboot both devices.
- ๐ถ Connect them to a single Wi-Fi network (some models) DEXP They demand it for Miracast).
- ๐ง Update the TV firmware through Settings โ Support โ Update of the PO.
Telephone and TV connected to the same Wi-Fi network|
The TV is now in "Wireless Display" mode |
"Developer Mode" is activated on the phone (optional, but helps with errors)|
Disabled. VPN and a proxy on a smartphone-->
โ ๏ธ Attention: On TVs DEXP series L24F (2019โ2020 Miracast only works when the screen is resolved. 1920ร1080 If you have Xiaomi with permission. 2K/4K, Try to temporarily lower the resolution in the display settings.
HDMI connection via adapter (for USB-C phones)
If wireless methods do not work, the most reliable option is a wired connection through the HDMI-It's gonna take an adapter:
- ๐ adapter USB-C โ HDMI (for example, Xiaomi USB-C to HDMI universal from Baseus).
- ๐บ HDMI-cable (usually complete with a TV).
- โก Charging for the phone - with a long broadcast, the battery will discharge.
Step-by-step:
- Connect the adapter to the USB-C port on your phone.
- Connect the adapter to the TV through HDMI-cable (use the port) HDMI 1/ARC for better compatibility).
- On the phone, select the data mode (usually the notification โHDMI Connectedโ appears).
- On TV. DEXP switch to the appropriate HDMI-input (Source or Input button on the remote control).
If the image does not appear:
- ๐ Try another one. HDMI-port on the TV (some ports on the TV) DEXP supportive MHL/HDMI-CEC).
- ๐ง Turn on the phone Developer Mode and activate "Debugging by" USB" (Sometimes it helps with adapters).
- ๐ฑ Reboot your phone with a connected adapter.
| Xiaomi model | Supported adapters | Max, permission. | Notes |
|---|---|---|---|
| Xiaomi 13/13 Pro | USB-C โ HDMI (4K) | 3840ร2160@60Hz | It requires an adapter that supports DisplayPort Alt Mode. |
| Redmi Note 11/12 | USB-C โ HDMI (Full HD) | 1920ร1080@60Hz | Budget adapters may not work โ choose with a Realtek chip. |
| POCO X5 | USB-C โ HDMI (2K) | 2560ร1440@30Hz | At 4K, image artifacts are possible. |
๐ก
If there is no audio after HDMI connection, check the DEXP audio settings: Settings โ Sound โ HDMI output. Sometimes you need to manually select PCM over Auto.
3.Using Google Cast (Chromecast) for streaming
If your DEXP TV supports Google Cast (or you have a Chromecast console), you can stream content from your phone without fully mirroring the screen.This method is suitable for watching videos from YouTube, Netflix or Google Photos, but not for duplicate desktop.
How to set up:
- Make sure your phone and TV are connected to the same Wi-Fi network.
- On your DEXP TV, open the Google Cast Receiver app (if any) or connect the Chromecast to the HDMI port.
- On the phone: ๐ต In the app (e.g. YouTube) click the Cast icon (๐ก). ๐บ Select your TV from the list of devices. ๐ฅ๏ธ Use the Settings to mirror the entire screen โ Connection and sharing โ Screen transmission โ Cast.
Limitations of the method:
- โ Not all apps support Cast (such as TikTok or local video players).
- โ ๏ธ In some models DEXP (for example, DEXP H32D7000) Google Cast is not stable โ it is better to use an external Chromecast.
- ๐ถ The quality of the broadcast depends on the speed of Wi-Fi (minimum 10 Mbps for Full). HD).
How to eliminate the sound delay at Cast?
4. USB connection (MTP/PTP) โ for file transfer
If you do not need to duplicate the screen, but simply transfer photos or videos to the TV, you can use the screen. USB-This method works even in older models. DEXP smart-free.
Instructions:
- Connect your phone and TV with a USB-A โ USB-C cable (or Micro-USB, depending on the Xiaomi model).
- On the phone, select the connection mode: ๐ File transfer (MTP) โ memory-access. ๐ท Transmission of photo (PTP) โ if MTP unrecognizable.
DEXP
Media player
File manager
Important: TVs DEXP Firmware older than 2019 may not support MTP-In this case, use the protocol. PTP Or transfer the files to the flash drive, and then connect it to the USB-port.
If the TV can't see the phone:
- ๐ Try another one. USB-port on TV (usually port) USB 3.0 is more stable).
- ๐ฑ On the phone, turn on the debugging. USB (Settings โ The phone. โ Version. MIUI โ 7 times to press the version โ For developers โ Debugging by USB).
- ๐ Reboot both devices.
5. Alternative methods: Wi-Fi Direct and third-party applications
If the standard methods didn't work, there are alternative solutions, one of which is Wi-Fi Direct, which creates a direct connection between the phone and the TV without a router.
How to connect via Wi-Fi Direct:
- On DEXP TV, activate Wi-Fi Direct (Settings โ Network โ Wi-Fi Direct).
- On Xiaomi phone, open Settings โ Wi-Fi โ Wi-Fi Direct.
- Select the TV from the list and connect (you may need to enter) PIN-code).
- Use apps like LocalCast or BubbleUPnP to stream content.
Another option is mirroring applications:
- ๐ฑ ApowerMirror โ supports both wired and wireless connectivity.
- ๐ฅ๏ธ TeamViewer QuickSupport โ for remote control of TV from the phone.
- ๐ฎ Steam Link โ if you need to stream games.
โ ๏ธ Note: When using third-party mirroring apps (such as ApowerMirror) on your TV DEXP You might see a message that says "Unsupported format." In which case, try changing the screen resolution of your phone to 1280ร720 or disable hardware acceleration in the application settings.
6. Solving typical connection problems
Even with the right setup, there can be errors, and we've collected some of the most common ways to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| TV doesn't find phone on Miracast | Different versions of the protocol or firewall blocking | Update on both devices or use Miracast Dongle adapter |
| No sound when connected via HDMI | Incorrect sound settings on the TV | From the TV menu, select HDMI Audio Format: PCM |
| Image delay (lag) when Cast | Weak Wi-Fi signal or congested network | Connect Chromecast over cable or go to 5GHz Wi-Fi |
| Black Screens in Mirroring | Incompatible resolution or HDCP enabled | Reduce your phone resolution or turn off HDCP in your TV settings |
If none of the methods worked, check:
- ๐ Cables and adapters are often a problem in a damaged wire or an unoriginal adapter.
- ๐ Security settings - some TVs DEXP Blocking connections due to politics HDCP (Try to disable it in the service menu (for power users!).
- ๐ง Alternative Firmware - on the Forums 4PDA There are modified firmwares for DEXP, Miracast-enabled.
๐ก
If you have a TV DEXP Released before 2018, the most reliable way to connect โ HDMI-adapter USB-Wireless protocols (Miracast, Cast) on older models are unstable or non-existent.