Set up Miracast on Xiaomi Redmi: from basic connectivity to error solving

Wirelessly transferring screens from a smartphone to a large display has become an integral part of the modern multimedia experience. Miracast technology allows you to stream content from Xiaomi Redmi to TVs, projectors or monitors without wires - the ideal solution for presentations, games or watching movies. However, many users face problems from the lack of an option on the menu to constant disconnections.

In this article, we’ll not only break down the standard Miracast setup procedure across Redmi models (from Redmi Note 10 to Redmi 12), but also uncover nuances that aren’t covered in the official instructions: how to get around MIUI limitations, what settings affect image latency, and why some TVs don’t see your smartphone; and for those who like experimentation, a bonus section on hidden protocol capabilities.

What is Miracast and why is it better than alternatives?

Miracast is a wireless media standard developed by the Wi-Fi Alliance that works on a point-to-peer basis, unlike Google Cast (used in Chromecast) or AirPlay (from Apple), it does not require a Wi-Fi network connection or depend on cloud services, making it a versatile solution for devices of different brands.

The advantages of Miracast on Xiaomi Redmi:

• 🔌 No Internet connection: works even without a router, creating a direct connection between a smartphone and a TV.
• 🎮 Minimum latency: critical for gaming (on average) 30-50 opportunistic 100+ MS for cloud services).
• 🔒 Security: Data is not transmitted through third-party servers.
• 📱 Support MIUI: built into Xiaomi firmware since version MIUI 9.

However, there are drawbacks: battery consumption (up to 15-20% per hour when broadcasting live) and possible image artifacts with a weak signal. In addition, not all TVs support Miracast out of the box - sometimes you need to upgrade your firmware or buy an adapter (for example, Microsoft Wireless Display Adapter).

Compatibility Check: Does your Redmi and Miracast TV support?

Before you try to set up a connection, make sure both devices are compatible with the technology.

• 📱 Redmi models with Miracast support: All devices on the market MIUI 9 and newer (starting with Redmi) 4/4A). Redmi Note 5/6/7/8/9/10/11/12 Series: Pro and Lite versions, Redmi K20/K30/K40/K50 and their modifications.
• ⚠️ Exceptions: Redmi Go and some regional versions (e.g. India) may have reduced functionality.

From the TV or monitor side:

• 📺 Modern Smart TV: All Samsung models (2013)+), LG (2014+ with WebOS, Sony Bravia (2015)+), Xiaomi Mi TV (version).
• 🖥️ Monitors and projectors: require an embedded Miracast module or an external adapter (e.g. ScreenBeam or Netgear) Push2TV).
• 🔌 Adapters: If the TV does not support Miracast, you can use it USB/HDMI-adapters (from 1500 ₽).

To check for support on your TV, go to your network settings and look for items like Screen Mirroring, Wi-Fi Direct or Miracast. On Xiaomi Mi TV, the option is hidden in Settings → Connection and Sharing → Wireless Display.

Turn-based Miracast setup on Xiaomi Redmi

The connection process takes no more than 2-3 minutes if both devices are compatible.

1. Activate Miracast on your TV: Press the Source (or Input) button on the remote. Select Screen Mirroring (on Samsung), Miracast (on LG) or Wireless Display (on Xiaomi Mi TV). Remember the device name (for example, Samsung-UE55).
2. Turn on Miracast on Redmi: Open Settings → Connections and Sharing → Wireless Display. Activate Wireless Display Slider. From the list of available devices, select the name of your TV.
3. Confirm connection: The connection request will appear on the TV — confirm it. The smartphone may display a data transfer warning — click Allow.

Once successfully connected, the Redmi screen will be duplicated on the TV. To switch to Extended Screen Mode (for example, for multitasking), tap the Wireless Display icon in the notification bar and select Advanced Mode.

⚠️ Warning: If the image slows or breaks after connecting, try reducing the screen resolution on your smartphone to 720p It's in the display settings, and it'll reduce the load on the Wi-Fi module.

Solving Common Problems with Miracast

Even with the right setup, Xiaomi Redmi users often encounter errors, and let’s look at the most common ones and how to fix them:

If none of these methods worked, try resetting your network settings to Redmi:

1. Go to Settings → System and Device → Additional → Network Reset.
2. Confirm the reset and restart the smartphone.
3. Repeat the connection procedure.

💡

If Miracast doesn’t work on the Redmi Note 8 Pro, try turning on the developer mode and activating the Wi-Fi debugging option in Settings → About Phone → MIUI version (click 7 times).

Optimizing the broadcast quality: hidden settings MIUI

MIUI hides several options that can significantly improve Miracast transmission stability and quality, and these settings are available through the developer menu or special ADB commands.

How to enable hidden options:

1. Activate Developer Mode: Go to Settings → About Phone → MIUI Version. Click on MIUI Version 7 times in a row.
2. Return to Settings → Additional → Developer → Find: Limit Background Processes → Select No Limits. Wi-Fi Debugging → Turn on. Don’t Turn Off the Screen While Charging → Activate (Good for Long-Term Broadcasts).

For advanced users, you can change the priority of Wi-Fi Direct and increase the bitrate of the broadcast via ADB.

adb shell settings put global wifi_direct_bitrate 5

setting the maximum bitrate (a value of 5 corresponds to 72 Mbps) This setting can cause the Wi-Fi module to overheat on older Redmi models (for example, Redmi 5), use with caution.

💡

For stable broadcast of games on Miracast, turn off Adaptive Brightness and Autoturn in the Xiaomi Redmi settings - this will reduce the load on the processor.

Miracast Alternatives: When to Choose a Different Protocol

Miracast is not always the best solution, and in some scenarios, alternative technologies are better:

• 🎥 Google Cast (Chromecast): Pros: Support 4K HDR, YouTube and Netflix integration.Cons: requires a connection to the same Wi-Fi network, latency up to 200 ms.
• 🍎 AirPlay (for Apple owners) TV): Pros: Minimum delay (20-40 Cons: only works with Apple devices or through emulators.
• 🌐 DLNA: Pros: transferring files without screen duplication (savings battery) Cons: no support for games and interactive content.
• 🔌 USB-C → HDMI Adapter: Pros: zero latency, support 4K@60Hz. Cons: wired connection, adapter is from 2000 ₽.

If you want to stream games (like Genshin Impact or Call of Duty Mobile), the best choice is a USB-C → HDMI adapter or Miracast with manual bitrate settings. Google Cast is suitable for watching movies, and DLNA is suitable for presentations.

⚠️ Note: When using Google Cast on Xiaomi Redmi, disable the dual apps feature in the settings. It can cause authorization conflicts on services like Netflix.

Miracast Safety: What You Need to Know

Wireless screen transmission can become a vulnerability if precautions are not taken, and here are the key risks and ways to minimize them:

• 🔍 Traffic interception: Miracast doesn't encrypt data by default.Attacker within radius 10-15 Solution: use Miracast only on trusted networks (e.g., at home) and public spaces are better suited for the broadcast. USB-C → HDMI.
• 📱 Unauthorized Connection: Some TVs keep a history of connected devices and can automatically connect to a smartphone.Solution: After use, remove the device from the list of trusted in the TV settings.
• 🔋 Data leakage: When broadcasting the screen, personal information notifications (SMS, letters) may be displayed.Solution: turn on Do Not Disturb Before Connecting.

For additional protection on Xiaomi Redmi:

1. Open Settings → Applications → Permissions → Wireless display.
2. Disable access to Contacts, Messages and Warehouse.
3. Enable Notification Block in the Quick Settings Panel.

FAQ: Frequent questions about Miracast on Xiaomi Redmi