How to broadcast from phone to TV Xiaomi to the full screen: all working ways

The problem with displaying a picture from your phone to the big screen is familiar to many: instead of a full picture, you get black fields on the sides, cropped edges or stretched resolution, especially when watching movies, playing games or presentations, when every pixel counts. Xiaomi TVs (Mi series) TV, Redmi Smart TV, Xiaomi TV A and others) support several wireless and wired broadcast protocols, but not all of them guarantee full-screen output without loss of quality.

In this article, we will analyze 5 proven ways to transfer the screen from Android or iPhone to Xiaomi TV You'll learn how to configure Miracast, Wi-Fi Direct, Google Cast, and hidden settings on your TV that the manufacturer doesn't advertise. We will focus on common errors, such as why the broadcast can slow down or why the TV can’t see the phone when both devices are on the same network.

Spoiler: on Xiaomi TVs 2022–2026 years with a MediaTek processor MT9611/MT9638 or amlogic T972 For full-screen output without artifacts, it is better to use the Miracast combination + You can manually adjust the resolution in the engineering menu, and you can talk about that in the hidden function section.

1. Xiaomi TV Preparation: What to Check Before Broadcasting

Before you plug in your phone, make sure your Xiaomi is yours. TV Many users skip this step and then wonder why the phone screen doesn't show up or the broadcast is interrupted.

First, check the firmware version. On Xiaomi TVs older than 2020 (e.g. Mi). TV 4S 55" or "Redmi Smart" TV X50) For stable operation of Miracast requires firmware not lower MIUI TV 2.0.18 To find out your version, go to:

Settings → About TV → Software version

Second, activate the signal reception modes:

• 📺 Miracast/Wi-Fi Display: Settings → Connections → Wireless projection (or Screen Mirroring on English firmware).
• 🔄 Wi-Fi Direct: Settings → The Internet and the Internet → Wi-Fi Direct.
• 🌐 Google Cast (Android only): Settings → Annexes → System applications → Google Cast Receiver → Turn on.

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If the menu does not have the option "Wireless projection", update the TV firmware or reset the network settings to factory (Settings) → System system → Reset → Resetting the network).

The third critical point is the resolution of the TV screen. TV frequent 1366×768 (even if it supports 3840×2160), And that's what causes the image to be cropped:

1. Open Settings → Display and sound → Screen resolution.
2. Select the maximum supported (for example, 4K 60Hz for Mi TV Q1E).
3. Activate the option to Automatically change permission (if any).

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On Xiaomi TVs with Android TV 11+ (for example, Xiaomi TV A Pro 55′′ for Miracast automatically selects the optimal resolution, but on older models it has to be adjusted manually.

Method 1: Miracast - wireless broadcast without lags (Android)

Miracast is a wireless screen standard that has been supported by all Xiaomi TVs since 2018, with the main advantage of minimal latency (about 30 to 50 milliseconds), which is critical for gaming or watching videos.

First, Miracast only works on a direct Wi-Fi connection between your phone and your TV (without a router), which means both devices must support 5 GHz Wi-Fi (2.4 GHz is possible to jerk).

Instructions for connection:

1. On the TV: Turn on Wireless projection (see section 1).
2. On the phone: open Settings → Connections → Screen broadcast (on Xiaomi/Redmi) Or quick settings. → Smart View (on Samsung).
3. Choose your Xiaomi TV Confirm the connection on both devices.

If the screen does not cover the entire screen of the TV:

• 🔧 On the phone in the broadcast settings, select Resolution: 1080p (Even if the phone supports 4K).
• 📺 On the TV in the projection menu, activate the full screen stretch (if the option is available).
• 🔄 Restart the broadcast – sometimes the resolution is “picked” only the second time.

Telephone and TV on the same Wi-Fi channel (5 GHz)|Distance between devices ≤ 5 meters|The phone's off. VPN|Energy saving mode is turned off on TV-->

Miracast|Google Cast (Chromecast)|Wi-Fi Direct|HDMI-cable|I don't know what it is.-->

3. Method 2: Google Cast (Chromecast) – for YouTube, Netflix and browser

If you don't want to stream the entire screen of your phone, but only videos from apps (YouTube, Netflix, KinoPoisk), then Google Cast is the best option. Unlike Miracast, it runs through a router and supports iPhone.

Features of Google Cast on Xiaomi TV:

• ✅ Supports 4K HDR (Android-based TV 10+).
• ❌ Does not broadcast system sounds (such as notifications or music from Spotify off-app).
• ⚠️ Some Xiaomi firmware requires manual activation of the Cast receiver (see Section 1).

How to broadcast:

1. Connect your phone and TV to the same Wi-Fi network.
2. Open a supported app (e.g. YouTube).
3. Press the Cast icon (📡) And choose your Xiaomi TV.
4. To broadcast the browser screen (Chrome): open the menu → broadcast → Broadcast tab.

If the video is displayed with black bars:

• 🎬 In the application settings (for example, YouTube) select Quality: 1080p/4K.
• 📺 On the TV in the menu Settings → Display. → Select Full Screen or Just Scan Image Mode.
• 🔄 Restart router – sometimes Cast “hangs” in low resolution due to network problems.

4. Method 3: Wi-Fi Direct - Miracast alternative for older models

Wi-Fi Direct is a direct connection technology for devices without a router, similar to Miracast, but with a different protocol. It's useful if your Xiaomi is a smart phone. TV Does not support Miracast (e.g. Mi) TV 3S 2017) or if Miracast is permanently terminated.

Advantages of Wi-Fi Direct:

• 🔄 It works on Android 4.0.+ (Miracast, which requires Android 4.2+).
• 📶 Less likely to be affected by other networks.
• ⚠️ Latency higher than Miracast (~100-150 ms, so it is not suitable for games.

Instructions:

1. On TV: Enable Wi-Fi Direct in Settings → The Internet and the Internet.
2. On the phone: open Settings → Wi-Fi → Wi-Fi Direct (on Xiaomi this item can be called Direct Connection).
3. Choose your Xiaomi TV from the list, confirm PIN-code (usually 0000 or 1234).
4. After connecting, open the settings on the phone → Screen. → Broadcast the screen and select the Wi-Fi Direct option.

If the image is not on the full screen:

• 🔧 On your phone, select the aspect ratio: 16:9 (even if the TV has 21:9).
• 📺 On the TV in the menu Settings → Display. → Select scale by screen size.

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If Wi-Fi Direct doesn’t find the TV, try turning off the Bluetooth phone — sometimes it interferes with scanning.

5. Method 4: Wired connection by HDMI (lag-free)

If you want the highest quality without delay (for example, for gaming or professional video work), then HDMI — The only reliable option, but there are pitfalls:

First, modern smartphones (including Xiaomi) 13/14, Redmi Note 12) lack HDMI-And second, not all adapters support the output to the port. 4K@60Hz — few 1080p@30Hz, What is critical for dynamic content.

What you need:

• 🔌 adapter USB-C → HDMI (for Android or Lightning → HDMI (iPhone).
• 📺 HDMI-cable (preferably version 2.0 or 2.1 for the 4K).
• ⚡ Power supply for adapter (some require charging connection).

Step-by-step:

1. Connect the adapter to the phone and then HDMI-cable to TV (port) HDMI 1/ARC preferably).
2. On the TV, select the signal source: press Input on the remote and select the appropriate one. HDMI-port.
3. On the phone in the screen settings, activate Mode HDMI (If you have one, or simply unlock the device – the image should appear automatically.

If the screen does not cover the entire TV:

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For iPhone officially supported only Apple Lightning Digital adapters AV Adapter (around 5,000) ₽). Cheap Chinese analogues may not work or give away artifacts.

6. Method 5: Hidden settings Xiaomi TV full-screen

If neither method has the perfect result, perhaps the problem lies in the hidden settings of the TV. The manufacturer restricts some settings in the standard menu, but they can be changed through the engineering menu or the schema. ADB-team.

⚠️ Warning: Incorrect changes to the engineering menu can cause the TV to crash.Do it at your own risk!

How to open the engineering menu on Xiaomi TV:

1. Turn on the TV and go to the main screen.
2. On the remote, press sequentially: Back → Back up. → Down. → Down. → Left. → Right. → Left. → Right.
3. The Factory Menu menu will open.

Settings for setting up full-screen output:

• 🔧 HDMI Scaling Mode → Install Full Screen (for the first time) HDMI-connection).
• 📺 Display Area → Adjust H Start, H Width, V Start, V Height to cover the entire screen (change one point, save the changes).
• 🔄 Miracast Resolution → choose 1920x1080_60 (if available).

For advanced users: setting up through ADB (PC required):

adb connect [IP_ TV]:5555


adb shell settings put global overscan_custom 0,0,0,0




adb shell settings put global hdmi_scaling_mode 0

Where [IP_TV] can be found in the settings → Network → Network status.

Typical problems and their solutions

Even if you set it up correctly, the broadcast can be incorrect, and here are the most common errors and ways to correct them:

Problem 1: The TV doesn’t see the phone in the list of devices to broadcast.

• 🔄 Reboot both devices.
• 📶 Make sure your phone and TV are connected to the same Wi-Fi network (for Google Cast) or that Wi-Fi is connected to the same Wi-Fi network. Direct/Miracast included.
• 🔧 Turn off the power saving mode for the Screen Mirroring app.

Problem 2: The broadcast is lagging or tearing.

• 📶 Switch the router to the 5 GHz channel (in the router settings).
• 🔌 Connect the TV to the router with an Ethernet cable (if supported).
• 📱 Close all background apps on your phone.

Problem 3: Sound is transmitted, but the image is not (or vice versa).

• 🔊 For Miracast: on the phone in the broadcast settings, turn on Transmit sound.
• 📺 For HDMI: Check if the adapter supports the HDMI ARC.
• 🔄 Reconnect the devices.

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If the sound is delayed when broadcasting through Miracast, try turning on Lipsinc in the settings of the TV (AV Sync) and manually select the delay (usually 100–200 ms).

⚠️ Note: Xiaomi TVs with PatchWall firmware (e.g. India) may have Miracast support disabled due to regional restrictions.Solution: Change TV region to Russia or Europe in settings.

FAQ: Frequent questions about streaming on Xiaomi TV