Why Wireless Projection on Xiaomi TV Doesn't Work: A Complete Troubleshooting Guide

Why Xiaomi TV refuses to receive a signal through the air

You are trying to broadcast the screen of a smartphone or laptop on Xiaomi Mi TV, But instead of a picture, you see the error "Device not found," "failed to connect," or just the infinite rotation of the indicator? The wireless projection problem is one of the most common complaints of Xiaomi TV owners, and the reason for this is not only hardware limitations, but also software conflicts between Miracast, Wi-Fi Direct and AirPlay protocols.

In this article, we will analyze the unique pitfalls of the Miracast protocol on Xiaomi TV series. P1, A2, S and others that the manufacturer does not mention in the official documentation. TV Stick connects to the projection without problems, and the TV stubbornly ignores the signal, or why after updating to the screen MIUI TV 3.0 is missing support for older devices, and you will not get universal tips "reset router", but specific steps based on your TV model and firmware version.

1. Basic Compatibility Check: Does your Xiaomi support? TV wireless projection

Before digging into the settings, make sure your TV is physically capable of receiving a wireless signal.Not all Xiaomi models are equipped with the necessary chip, but in budget series (e.g. Mi). TV 4A 32) the function may be disabled at the firmware level.

Here is the official list of supported protocols by series (relevant for firmware 2023-2026):

How to check for support on your model:

1. Open the Settings. → The device → About TV and record a model (for example, L32M6-6ARU).
2. Go to Settings. → Connections → Wireless projection. If you don't have a point, your TV doesn't support the function.
3. For models older than 2020, check the version MIUI TV: If it is below 2.1.45, the update may add support.

⚠️ Note: Xiaomi TVs with Amlogic processors S905 (series 4A/4C) Miracast often loses compatibility with Android after upgrading to the Android 9+. In this case, only the rollback of the firmware or the use of an external adapter (for example, AnyCast) will help).

2.Typical Miracast Mistakes on Xiaomi TV and their causes

The Miracast protocol (aka Wi-Fi Display) is the main way to wirelessly project on Xiaomi, but it is extremely sensitive to network settings and driver versions.-5 The mistakes that users see most often:

• 🔍 "Device not found" - TV does not appear in the list of available screens on the smartphone / PC. the reason: conflict of Wi-Fi channels or disconnected Wi-Fi Direct on TV.
• 🚫 "Failed to connect" - the connection is interrupted during the pairing stage. culprit: mismatch of Miracast versions (for example, a smartphone on Android 13 and TV on Android 9).
• 📶 "Weak signal — the picture is lagging or disappearing. Problem: the TV and the signal source are connected to different networks (for example, TV to 5GHz, and the phone to 2.4GHz).
• 🔄 "Connection-Switch-off is a cyclical error, often caused by the power saving mode on your smartphone or TV on.
• 🖥️ "Black screen — sound is, no image. Reason: incompatible resolution (for example, the PC sends out a message) 4K@60Hz, and TV only supports 1080p@30Hz).

A special case is Xiaomi’s PatchWall TVs, which feature wireless projection often hidden under the name “Cast” or “Screen Mirroring,” and the standard Miracast may not work without manual activation via a mobile phone. ADB:

adb shell settings put global wifi_display_on 1

3. Step-by-step diagnosis: from simple to complex

Before you reset your settings or buy adapters, check this checklist. 80% of problems are solved in the first three steps:

If the basic steps did not help, move on to a deep diagnosis:

Checking the Wi-Fi network

• 📡 The TV and the signal source must be connected to the same network (or both disconnected from the network for Wi-Fi Direct).
• 🔗 If you are using a guest network or VLAN, Miracast won’t work, it will need a core network.
• 🔄 Turn the router into mode 802.11n (turn off 802.11ac/ax), if the TV is older 2019 year-end.

TV settings

1. Open Settings → Connections → Wireless projection.
2. Turn on Wi-Fi Direct and Miracast (if there are separate switches).
3. In the section Additional, disable Image Optimization – it can block external signals.

Signal source parameters

On Android:

• 📱 Go to Settings. → Connections → Wireless projection.
• 🔍 If the TV is not visible, click Add the device manually and enter IP-TV address (you can find it in Settings) → Network → State of the network).

On Windows 10/11:

• 💻 Press Win. + K and select Connect to the wireless display.
• 🔄 If the TV isn’t showing, upgrade your Wi-Fi adapter driver (download from the manufacturer’s website, not Windows Update).

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If you have a Xiaomi Mi TV Stick, try connecting it to the USB-TV port – sometimes this unlocks hidden Miracast features in TV firmware.

4.Firmware problems: when an update breaks the projection

One of the most insidious reasons is the update. MIUI TV, They're going to add bugs instead of fixes, like when you update them to MIUI TV 3.0.12 (released March 2026) by many Xiaomi users TV P1 The manufacturer acknowledged the problem only after 2 months, releasing a patch in version 3.0.15.

How to check if the firmware is to blame:

1. Go to Settings → About TV → System Update.
2. Compare your version with the latest stable builds on the official website.
3. If your version is newer than the site, you may be in beta. → Additionally. → Recovery and discharge → Related: Retreat of the update.

List of "problematic" versions of firmware (according to forums) 4PDA and Mi Community):

⚠️ Note: If the wireless projection is missing after the update, do not reset the TV to factory settings - this can block the function forever on models with Amlogic T972 (series A2). Instead, try resetting only network settings in Settings. → Network → Additionally. → Resetting the network.

5. Router conflicts: settings that kill Miracast

Even if the TV and the signal source are fully functional, the router settings can block wireless projection, especially for modern routers with Smart Connect, Band Steering or other features. AI Protection.

What to disable in the router (instructions for TP-Link, Xiaomi Mi Router, Keenetic):

• 🛡️ Firewall – temporarily turn it off or add the TV to the exceptions MAC-address.
• 🔄 Isolation of clients (AP Isolation – This feature blocks data exchange between devices on the same network.
• 📡 Automatic switching between 2.4GHz and 5GHz (Band Steering) – force the TV to lock on the same band (preferably 5GHz).
• 🔒 WPA3-encryption - switch to the switch to WPA2-PSK (Miracast doesn't support WPA3).
• 🌐 IPv6 — Turn it off in the settings LAN, If the TV is older than 2020.

How to check if the router is to blame:

1. Connect the TV and the signal source to the mobile hotspot (from the phone), if the projection works, the router is a problem.
2. Try connecting to your TV via Wi-Fi Direct (without a router), and if it works, it's the network settings that are to blame.
3. Check if the router is on Guest Network Mode – it often blocks Miracast.

💡

If you have a dual-band router, force the TV to assign a static router. IP 5GHz band, this will eliminate delays in connection.

6. Alternative methods of wireless projection if Miracast does not work

If all attempts to fix Miracast were in vain, do not despair – there are at least 5 alternative ways to broadcast the screen on Xiaomi TV:

• 📱 Google Cast (Chromecast) – works on all TVs MIUI TV 2.0+. Requires installation of the Google Home app on your smartphone. 1080p@60Hz and sound 5.1.
• 🍎 AirPlay – Available on models Q2/Q1E post-update MIUI TV 3.0. To activate, you need to turn on Settings → Apple AirPlay.
• 🖥️ DLNA — It is suitable for transferring media files (but not screen!). Use applications like BubbleUPnP (Android) or VLC (Windows/Mac).
• 🔌 Adapters HDMI — If the software methods do not help, buy Mi. TV Stick or AnyCast (stands) ~1500–2500₽). They emulate Miracast through USB/HDMI.
• 🌍 Cloud services – TeamViewer, ApowerMirror or LetsView allow you to broadcast the screen over the Internet (but with a delay of 1-2 seconds).

Comparison of alternatives by key parameters:

If you have chosen Google Cast, look out for two things:

1. Google Play Services should be enabled on your TV (check Settings). → Annexes → Systemic).
2. Multicast should be enabled in the router (IGMP). On Xiaomi Mi Router, it is done in Extended → IGMP Snooping → Turn on.

7. Hardware malfunctions: when the "iron" is to blame

If the software methods didn't work, the problem could be in the hardware of the TV, and most often, it fails.

• 📡 Wi-Fi/Bluetooth The module is responsible for wireless connections. Symptoms: the TV does not see any devices through the air, but it works on a cable.
• 🔌 Antenna connectors – oxidation or break of a cable connecting the motherboard to a Wi-Fi antenna.
• 🔋 Power module Wi-Fi - unstable voltage due to bloated capacitors on the board.

How to diagnose a hardware malfunction:

1. Connect an external Wi-Fi adapter to the TV via USB (For example, TP-Link TL-WN725N). If the projection is working, the internal module is to blame.
2. Check if Bluetooth works (plug in the remote or headphones). If not, there's a problem with the module.
3. Run the equipment test: go to Settings → On TV. → Diagnostics → Wi-Fi Test: Errors #1002 or #1005 indicate hardware failure.

The cost of repair (according to Xiaomi service centers in 2026):

• 🔧 Wi-Fi module replacement: 2500-4500₽ (depending on the TV model).
• 🔌 Repair of antenna connectors: 1500–2500₽.
• 🔋 Replacement of capacitors on the board: 2000–3000₽.

⚠️ Note: In the Xiaomi TV series A2 and P1 Wi-Fi module is often soldered to the motherboard. Replacing it requires flashing. MAC-address UART, Otherwise, the TV will not be connected to the network!

FAQ: Frequent questions on wireless projection on Xiaomi TV