Xiaomi projectors have become a popular solution for home theaters, presentations and even gaming, but many users are faced with the problem of how to properly connect a smartphone of the same brand to them. Despite the fact that both devices are produced by the same brand, their connection is not always intuitive โ especially if we are talking about models with different connectors or data protocols.
In this article, we will discuss all the current ways of connecting (from wired) HDMI to Miracast wireless, specify compatible projector and phone models Xiaomi/Redmi/POCO, We'll also give you some tips for setting up to maximize image quality, and we'll focus on the common bugs that might cause the connection to fail and how to fix them.
Important: If your projector doesnโt recognize the phone even after all the manipulations, the problem may be in the version. MIUI Or a projector firmware. At the end of the article, you'll find FAQ case-response.
1. a wired connection through HDMI or USB-C
The most stable and versatile way is to use a cable, which guarantees minimal latency, which is critical for gaming or watching high-resolution video, but there are nuances depending on the model of the phone and the projector.
For modern Xiaomi smartphones (starting with the Redmi Note 10 and Mi 11) you will need:
- ๐ adapter USB-C โ HDMI (portless HDMI). The adapter must support DisplayPort Alt Mode.
- ๐บ Cable HDMI 2.0 (transmit 4K@60Hz). For Full. HD enough HDMI 1.4.
- โก Charging the phone โ with prolonged use, the cable can drain the battery.
Instructions for connection:
- Connect the adapter to the USB-C port of the phone.
- Connect the adapter and projector with a cable HDMI.
- On your phone, select the image transfer mode: go to Settings โ Screen. โ Transfer to another screen.
- In the projector, select the source of the signal. HDMI (usually by the Source button on the remote).
The adapter supports DisplayPort Alt Mode|
Cable HDMI damaged|
Projector is connected to the network and ready to work|
Power saving mode on the phone is disabled
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Some Xiaomi budget projectors (such as Mi Smart Projector 2) donโt support the projector. HDCP 2.2 is the content protection standard, because of that, Netflix or Disney.+ The solution is to use Screen Mirroring (more on this below).
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If the image on the projector is cropped at the edges, on the phone go to Settings โ Screen. โ Select the aspect ratio by screen size or 16:9.
2. Wireless Wi-Fi connection (Miracast)
Miracast technology allows you to broadcast the screen of the phone to the projector without wires, but with some limitations:
- ๐ถ Miracast support is required with both a projector and a phone (most Xiaomi models starting with the first one). MIUI 10 supportive).
- ๐ Consumes more energy than a wired connection.
- โฑ Signal delay (~50-100 MS) as seen in games.
How to connect:
- Make sure the phone and projector are connected to the same Wi-Fi network (or create an access point on the phone).
- On the projector, activate Screen Mirroring mode (in the Settings menu) โ Wireless projection).
- On the phone, open Settings. โ Connections and sharing โ Transfer to another screen.
- Select your projector name from the list of available devices.
If the projector is not listed:
- ๐ Reboot both devices.
- ๐ฑ Update. MIUI on the phone to the latest version.
- ๐ On the projector, reset the network settings: Settings โ System system โ Resetting the network.
Wire (HDMI/USB-C) |
Wireless (Wi-Fi/Miracast)|
Through USB (MHL) |
Did not connect the projector
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3. Connection through USB (regime MHL)
This method is relevant for older models of projectors and phones Xiaomi (before the Redmi Note 8), where there was still a port Micro-USB. MHL (Mobile High-Definition Link allows video and sound to be transmitted over the Internet USB-cable, but requires:
- ๐ adapter MHL โ HDMI (for example, Xiaomi MHL Adapter).
- โก Adapter power โ many models need additional power USB-feeding-port.
- ๐ฑ Support MHL telephone (see list of compatible models below).
Compatible Xiaomi phones with MHL:
| Model phone | Support for MHL | Max, permission. |
|---|---|---|
| Xiaomi Mi 5 | Yes. | 1080p |
| Redmi Note 4/4X | Yes. | 1080p |
| Xiaomi Mi Max 2 | Yes. | 1080p |
| Redmi 5 Plus | No. | โ |
| POCO F1 | Yeah (with adapter) | 1080p |
Instructions:
- Connect the adapter. MHL Micro-USB phone port.
- Connect the adapter to the projector cable HDMI.
- Connect the adapter power (if required) to the socket or USB-port.
- On the projector, select the source. HDMI.
What to do if the image flashes?
4. Connect via the Mi Home app (for smart projectors)
Xiaomi Mi Smart Projector series projectors (such as Mi Smart Projector 2 Pro) support control through the Mi Home app, which allows you not only to broadcast the screen, but also to use the phone as a remote control.
How to set up:
- Install the Mi Home app from Google Play or the App Store.
- Sign up or sign in to your Xiaomi account.
- Add the projector to the app: press + โ Add the device โ Projector.
- Follow the instructions on the screen (scanning will be required) QR-projector).
- After connecting to the device menu, select the phone screen โ Start broadcasting.
Advantages of this method:
- ๐ฎ The ability to use the phone as a gamepad for games on the projector.
- ๐ Directly transmitting sound to the projector (without delay).
- ๐ฑ Manage brightness, contrast and other settings from your phone.
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The Mi Home app only works with Xiaomi projectors that support MiOT protocol. Check the compatibility of your model on the manufacturer's website.
5. Connect via Chromecast or Google Cast
If your Xiaomi projector supports Google Cast (e.g. Mi Laser Projector 150), you can stream the screen through the built-in Chromecast.This method is convenient for streaming videos from YouTube, Netflix or Google Photos.
How to set up:
- Make sure that the phone and projector are connected to the same Wi-Fi network.
- On the projector, turn on Google Cast mode (in the Settings menu) โ Wireless networks).
- On your phone, open an app that supports Cast (like YouTube).
- Slip on the broadcast icon (๐ก) and select your projector.
Important: to broadcast the entire screen (not only video) on the phone should be enabled developer mode and option "Wireless debugging" (Settings) โ The phone. โ Version. MIUI โ Tap 7 times, then return to the additional โ For developers โ Wireless debugging).
List of apps that support Google Cast:
- ๐ฌ YouTube, Netflix, Disney+
- ๐ต Spotify, Google Play Music
- ๐ท Google Photos, Mi Gallery
6.The solution to the problems: why the projector can't see the phone
If the connection fails, check the following points:
๐ก
Before diagnosing, restart both devices โ this solves 30% of connection problems.
Problem 1: The projector is not displayed in the list of devices for broadcasting
- ๐ Make sure that the projector is on Screen Mirroring mode.
- ๐ถ Check that the phone and projector are on the same Wi-Fi network (do not use the guest network).
- ๐ฑ Update. MIUI Up to the latest version: Settings โ The phone. โ Updating the system.
Problem 2: Image is there, but no sound
- ๐ On the phone, check what is selected in the sound settings HDMI Or the external speaker.
- ๐ง Make sure the volume is not at zero and the correct sound source is selected.
- ๐ Reconnect the cable or restart the broadcast over Wi-Fi.
Problem 3: Image delay (lag) when wirelessly connected
- ๐ถ Switch to 5 GHz Wi-Fi (less loaded than 2.4 GHz).
- ๐ฑ Close the background apps on your phone that consume traffic.
- ๐ For games or videos in 4K use a wired connection.
How to check if your phone supports Miracast?
Problem 4: The projector shows "No signal" when HDMI-connection
- ๐ Check that the cable HDMI inserted before clicking (many adapters require tight connection).
- ๐บ On the projector, select the right source (HDMI 1/HDMI 2).
- ๐ Try another cable or adapter (cheap Chinese adapters often don't support it) 4K).
โ ๏ธ Note: If you are using Xiaomi Mi 11 Ultra or newer, to display the image on the HDMI may need to be unlocked OEM Unlock in the developer settings. It's related to security policy. MIUI.
7. Optimization of image quality
Even after you've successfully connected, the picture on the projector may not look perfect. Here's how to improve it:
For wired connection (HDMI/USB-C):
- ๐จ In the phone settings, select the maximum resolution: Settings โ Screen. โ Screen resolution.
- ๐ If the text is too small, enable zooming: Settings โ Special facilities โ Scale of display.
- ๐ผ In the projector, activate Game or Cinema mode for better color reproduction.
For wireless connectivity (Miracast):
- ๐ถ Use a router with Wi-Fi 6 support to reduce lag.
- ๐ต Turn off Bluetooth on your phone and GPS โ They can interfere.
- ๐ Connect your phone to charge โ with low battery levels MIUI Automatically reduces the quality of the broadcast.
Recommended settings of the projector for the movie:
| Parameter | Recommended value | Note |
|---|---|---|
| Brightness | 50-60% | Too high brightness "washes out" black color. |
| Contrast | 70-80% | It's deepening the black. |
| Color temperature | 6500K | The most natural transmission of flowers. |
| Image mode | Cinema | Optimized for movies. |
| Noise suppression | On. | Reduces artifacts when compressed video. |