Broadcast from the phone to Xiaomi TV does not work: a full analysis of the causes and solutions

You try to stream a video with a Xiaomi Redmi Note 12 or POCO X5 on a Xiaomi Mi TV Q2, but the screen remains black and the devices can’t see each other? This problem is familiar to many owners of Xiaomi equipment — even with the right settings, the broadcast can be interrupted, lag or not start at all. In 80% of cases, it is not the fault, but the software conflicts, the wrong network settings or outdated firmware.

In this article, we’ll look at all the possible reasons why phone-to-TV broadcasting doesn’t work, from the banal Wi-Fi Direct turned off to the hidden limitations of MIUI for certain models. You’ll get step-by-step diagnostic instructions, hardware checklists, and protocol compatibility tables. And if the problem is hardware, you’ll learn how to tell a software failure from a hardware defect without going to the service.

We warn you right away: on Xiaomi TVs from 2020-2023, Miracast broadcast can be blocked if the phone is connected to 5 GHz and TV is connected to 2.4 GHz, even if they are on the same local network, a feature of the implementation of the protocol in PatchWall, which is not written in the official manuals.

1. Checking the basic conditions for broadcasting

Before digging deep into the settings, make sure the minimum requirements for wireless broadcasting are met. Often users miss the obvious:

• 📶 Both devices are connected to the same Wi-Fi network, and even if the phone sees the TV in the list of available screens, the networks are different. = 100% rejection.
• 🔄 Do Not Disturb mode is off on the phone. MIUI 14+ It blocks background processes, including Miracast.
• 🔋 The charge of the phone is above 20%. At low battery level, the system automatically limits resource-intensive functions.
• 📱 The TV has a signal reception mode on it, and in PatchWall, it can be called a Wireless Display or a Screen Mirroring».

Pay special attention to Wi-Fi versions. Xiaomi TVs until 2021 (such as Mi TV 4S 55) often do not support Wi-Fi 6, and smartphones like Xiaomi 13 Pro connect to it by default, resulting in devices “cannot see” each other, although they are on the same network.

⚠️ Note: If your router is broadcasting two networks with the same name (2.4 GHz and 5 GHz), force your phone to connect to the 2.4 GHz network via Wi-Fi settings. MIUI It's done like this: Settings. → Wi-Fi → [tap the net] → Frequency → 2.4 GHz.

2 Miracast problems: why the TV can't see the phone

Miracast is the main wireless protocol on Xiaomi TV, but it's capricious. If the phone's screen isn't duplicated and the list of available displays is blank, check:

• 🔍 Miracast support with your phone.Outdated models (Redmi) 5A, Mi A1) They may not have hardware support.
• 🛠️ The TV firmware version. on PatchWall below 3.0 Miracast is malfunctioning.
• 📡 Network interference: Microwaves, wireless headphones, or neighboring Wi-Fi networks on the same channel may interrupt the connection.

To check Miracast support on your phone, run the command in ADB:

adb shell dumpsys media.projection

If you have Miracast: supported=true in the output, the protocol is supported. For your TV, check the Settings menu → Connections → Wireless display. If you don't have a point, update your firmware.

On Xiaomi TVs with an Amlogic (4A, 4C series) Miracast may not work if the router is 802.11r (Fast Roaming) enabled. Turn it off in the router settings.

Check out PatchWall's version on TV|Turn off 5GHz on your phone|Make sure the router is not in bridge mode|Reboot both devices-->

3.Conflicts with Wi-Fi Direct and Google Cast

If Miracast doesn't fit, Xiaomi offers alternatives: Wi-Fi Direct (for older models) and Google Cast (for newer ones).

• 🔗 Wi-Fi Direct requires the phone to be connected directly to the TV, bypassing the router. MIUI 12+ This mode may conflict with the included VPN.
• 📱 Google Cast (via Google Home) only works on Android TVs TV 9.0+. On PatchWall, it may be called the Chromecast built-in».
• 🔄 Miracast and Wi-Fi Direct are both activated simultaneously, causing a crash. Only one protocol should be on the TV menu.

To enable Wi-Fi Direct on your Xiaomi TV:

1. Open Settings → Network and Internet → Wi-Fi Direct.
2. Activate the slider and wait for the TV name to appear (e.g. XIAOMI-TV-Q2-1234).
3. On your phone in Settings → Connections → Wi-Fi Direct, select this name.

⚠️ Attention: On smartphones POCO and Black Shark Wi-Fi Direct mode can be hidden. To activate it, type the dialer code ##2432546##.

For Google Cast, it is mandatory to:

• Install the Google Home app on your phone (even if you have MIUI).
• In the settings of the TV, turn on Settings → Devices and accessories → Chromecast built-in.
• Make sure your phone is Bluetooth enabled – it’s needed for initial synchronization.

4.Problems with HDMI-cable and adapter

If wireless methods don't work, you'll have to wire your HDMI connection, but there's some nuances here.

• 🔌 Type of connector on the phone. Modern Xiaomi (for example, the phone is not a phone, 13T Pro) do not have a microHDMI port - an adapter will be required USB-C → HDMI Support for DisplayPort Alt Mode.
• 📺 Version. HDMI on the TV. 4K@60Hz cable HDMI 2.0+. Old cables (HDMI 1.4) maximise 1080p@30Hz.
• ⚡ Adapter power. Cheap adapters. USB-C → HDMI They require additional food through USB-A. Without it, the picture will flash or be absent.

Check the adapter's performance:

1. Connect the phone to the adapter and the adapter to the TV.
2. On the phone in Settings → Display → Display Mode, select “External screen”.
3. If the image doesn’t show up, try another cable or HDMI port on your TV (sometimes HDMI 1 and HDMI 2 ports have different bandwidths).

💡

If HDMI-When connecting, the sound is only through the phone, in the settings of the TV select Settings → Sound. → Exit HDMI → PCM. This will solve the problem of incompatible audio codecs.

5. Software failures: firmware, cache, application conflicts

In 30 percent of cases, the broadcast is not working because of software errors on the phone or TV.

• The TV “sees” the phone, but when connected, it emits an error “I could not connect”.
• The broadcast begins, but after 5-10 seconds it stops.
• The TV screen displays only the Miracast logo, and then the black screen.

Decisions:

1. Cleaning the cache of system applications: On phone: Settings → Applications → Application Management → System → Miracast → Storage → Clear the cache. On TV: Settings → Applications → System applications → Wireless Display → Clear the data.
2. Firmware Update: TV: Settings → About TV → System Update. Phone: Settings → About Phone → Update MIUI.

Resetting network settings

• On the phone: Settings → Wi-Fi → Additional → Reset network settings.
• On TV: Settings → Network and Internet → Reset network settings.

On Xiaomi TVs with PatchWall 4.0+ firmware, the Miracast certificate can be reset after the update. To restore it, go to Settings → For developers → Reset the Miracast certificate (the item appears after 5 times clicking on the “Build Number” in the TV information).

6. Manufacturer restrictions and regional locks

Xiaomi imposes hidden restrictions on broadcasting depending on:

• 🌍 Firmware region, on firmware TVs for China (CN) Google Cast support may be disabled.
• 📦 Modifications of the device. TV 4S India does not support Miracast with phones on the Internet MIUI Global.
• 🔒 Security policies. Some models block the broadcast if the phone is debugging. USB (ADB).

How to get around the restrictions:

1. Change the firmware region (power users only!): Download the Global or EEA firmware for your model from the Xiaomi Firmware Updater. Run it through Fastboot or Recovery (instructions are available on 4PDA).

Use third-party apps

• ApowerMirror (operates via Wi-Fi but with a delay of ~100 ms).
• TeamViewer QuickSupport (broadcast over the Internet, without a local network).

⚠️ Note: Flashing your Xiaomi TV is unwarranted and can lead to a "brick" (impossibility to turn on). Before the procedure, check the firmware compatibility with your model from the table on the table on the device. XDA Developers.

7 Hardware malfunctions: how to distinguish from software

If none of these methods work, there's a possibility of hardware failure.

• 🔌 Wi-Fi TV module is not turned on (in network settings empty, although the router works).
• 📶 The phone doesn’t see any broadcasting device (even other TVs or laptops).
• ⚡ HDMI-The TV port does not respond to the connection of any devices.

Diagnosis:

1. Check the Wi-Fi TV module: adb shell ifconfig wlan0 If the command returns wlan0: error fetching interface information, the module is faulty.
2. Test it. HDMI-Port: Connect another device (e.g. Xiaomi Mi Box) to your TV, if the image is missing, the port is damaged (a common problem after a thunderstorm or power surges).

Check the Wi-Fi antenna on your phone

• Install the WiFi Analyzer app and measure the signal level next to the router.
• If the signal strength is below -70 dBm, the antenna may malfunction.