Wireless display on Xiaomi Redmi: a complete guide to setup and use

The wireless display on Xiaomi Redmi smartphones is a technology that allows you to broadcast your phone screen to a large monitor, TV or projector without using cables. The feature has become especially popular among users who want to share content with friends, give presentations or just comfortably watch movies on the big screen. But how exactly does this technology work, what protocols are supported, and why do connection problems sometimes arise?

In this article, we will discuss in detail what a wireless display (or Wireless Display), what standards Xiaomi uses (for example, Miracast or Google Cast), how to enable the feature on different Redmi models, and what to do if the smartphone does not see the device for broadcasting.

If you've ever tried to connect your Redmi Note 12 or Redmi 10 to your TV and you've encountered errors like "Unconnected" or "Device not supported," this guide will help you understand the reasons and find a solution, and for those who are just planning to use a wireless display, we've prepared a comparison table of supported standards and a list of compatible devices.

What is a wireless display and how it works on Xiaomi Redmi

Wireless Display is a technology that transmits images and sound from a smartphone to an external screen via air, without wires, based on Miracast standards, Google Cast (used in Chromecast), or proprietary solutions from manufacturers. Xiaomi in its Redmi smartphones relies primarily on Miracast, an open standard supported by most modern TVs and projectors.

The principle of operation is simple: the smartphone creates a direct Wi-Fi Direct connection with the receiving device (for example, a Xiaomi Mi TV). TV or the Mi adapter TV Stick. Data is transmitted in real time, but with a small latency, which depends on the quality of the connection and the codecs supported. It is important to understand that Miracast does not require an Internet connection - it is enough that both devices support the standard.

On Redmi smartphones, the wireless display feature is usually hidden in the Settings menu → Connections and sharing → Wireless display (name may vary depending on version) MIUI). In some models, for example, Redmi Note 11 Pro+, This is called Screen Mirroring, or Screen Mirroring, and the support for this technology depends on the hardware platform, so budget models on Snapdragon chips. 4xx may have restrictions on permission or frequency of personnel.

Key features of the wireless display on Xiaomi Redmi:

• 🔄 Two-way transmission: you can not only broadcast the screen of the phone, but also control it from the remote of the TV (if supported) HID protocol).
• 📶 Wi-Fi Direct: Connection is established directly, without a router, but some devices require a shared network.
• 🎮 Low latency: in games lag is ~50–100 ms (depending on model and firmware).
• 🔒 Content Protection: Some services (e.g. Netflix or Disney)+) They block the broadcast because DRM.

What standards of wireless broadcasting supports Xiaomi Redmi

Xiaomi Redmi smartphones support several wireless broadcast protocols, but their availability depends on the model, region and version. MIUI. Basic standards:

Important: Redmi models for the Chinese market (with firmware without Google services) may not support Google Cast, but always work with Miracast and Xiaomi branded solutions.

To find out what protocols your smartphone supports, check Settings. → The phone. → Version. MIUI And compare it to a table. For example, the Redmi Note 12 Pro.+ 5G on MIUI 14 supports all three major standards, and budget Redmi A1 It can only be limited to Miracast.

Step-by-step: how to turn on the wireless display on Xiaomi Redmi

The algorithm for connecting a wireless display on Xiaomi Redmi depends on the version MIUI, But the general pattern looks like this:

1. Device Preparation: Make sure the TV or adapter is on and in signal search mode (usually a Screen Mirroring or Miracast option in the TV menu).
2. Activation on your smartphone: open Settings → Connections and sharing → Wireless display (or screen broadcasting).
3. Device search: wait until the smartphone finds the available devices to connect to. If the list is empty, click "Update".
4. Connection: Select the device you want from the list. The first time you connect, you may need to confirm on your TV.
5. Display setting: After connecting, select the broadcast mode (screen duplication or extension).

If your smartphone doesn’t find your TV, try the following:

• 🔄 Reboot both devices.
• 📡 Switch your TV to another Wi-Fi network (sometimes it helps).
• 🔧 Update the firmware MIUI last-minute.
• 🛠️ Reset network settings on your smartphone (Settings) → SIM-maps and mobile networks → Resetting network settings).

Note to Redmi with MIUI 13/14: In some firmware, the wireless display option is hidden in the Settings menu → Screen. → Screen broadcast. If not, check for updates or use Developer Mode (activated) 7-multiple-click MIUI under the heading “On the telephone»).

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If the TV doesn't support Miracast, there is one. HDMI-port, use the Mi adapter TV Stick or Amazon Fire TV Stick – They add wireless broadcast support.

Common Problems and Their Solutions

Even with the right setup, Xiaomi Redmi users often encounter errors when connecting a wireless display. Let’s consider typical scenarios and how to fix them.

⚠️ Note: if the TV gives an error "Not supported video format", try to change the screen resolution of the smartphone to the standard (for example, 1920×1080 instead 2340×1080). This is true for models with non-standard aspect ratios (for example, Redmi Note). 11S permittingly 2400×1080).

Problem 1: The smartphone can’t find the TV

• 🔌 Check if Screen Mirroring is on on your TV (sometimes hidden in the Network menu) → Miracast).
• 📶 Make sure both devices are connected to the same Wi-Fi network (even if you use Wi-Fi Direct).
• 🔄 Restart the router – sometimes interfere with the settings of the firewall.

Problem 2: Connection is cut off in seconds

• 🔋 Check the battery level - at a discharge below 15% MIUI may forcibly shut down the broadcast.
• 📡 Switch to 5GHz Wi-Fi (if the TV supports).
• 🛠️ Turn off the energy saving mode (Settings) → Battery → Energy saving regime).

Problem 3: No sound when broadcasting

• 🔊 Check if the TV is switched off or if another source is selected (e.g., the audio is switched off, HDMI ARC).
• 🎵 In the broadcast settings on your smartphone, turn on the option “Transmit sound».
• 🔄 Reconnect devices – sometimes the sound appears after reconnecting.

Alternative ways to broadcast the screen with Xiaomi Redmi

If the built-in wireless display function doesn't work or doesn't suit the broadcast quality, you can use third-party solutions. They often offer additional features, such as screen recording or audio-only broadcasting.

1. Screen mirroring applications

• 📱 ApowerMirror: Supports Miracast, Google Cast, and even AirPlay (for Apple) TV). There is a function of managing the phone with a PC.
• 🖥️ TeamViewer QuickSupport: allows you to broadcast the screen to your computer over the Internet (useful for technical support).
• 🎮 Steam Link: Optimized for gamers – low latency when streaming games to TV.

Wireless adapters

If wireless technology is not suitable due to lags or lack of support, consider wired solutions:

• 🔌 USB-C to HDMI: Adapter for direct connections (e.g. Xiaomi) USB-C to HDMI). Maintains permission until 4K@30Hz.
• 🖥️ MHL: It is an outdated standard, but is still found in some Redmi models (for example, Redmi 5 Plus).

3. Branded solutions from Xiaomi

For owners of Xiaomi equipment, exclusive options are available:

• 📺 Mi Home: If you have a Xiaomi smart TV, you can use the Smart Screen feature for fast streaming.
• 🔊 Mi AI Speaker: some speakers support sound output from the screen of the smartphone.

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For minimum delay in games, use a wired adapter USB-C to HDMI Steam Link app – wireless protocols add lag ~50-100 ms.

Comparison of wireless display on different models Xiaomi Redmi

Not all Redmi smartphones are equally good at broadcasting the screen. MIUI And the standards that are supported, and the comparison table below is for the popular models.

As you can see from the table, flagship models (for example, Redmi) K50 Gaming offers better broadcast quality, while budget smartphones like Redmi 9A They're limited to low resolution and high latency, if you want to stream games or videos smoothly. 4K, Pay attention to models with Snapdragon processors 7xx/8xx or Dimensity.

Safety and Limitations in Using a Wireless Display

Broadcasting your smartphone screen to external devices is convenient, but has a number of limitations related to content protection and performance.

1. Limitations DRM

Many streaming services (e.g. Netflix, Disney)+, Kion blocks streaming via Miracast or Google Cast due to copyright protection (Widevine) L1). In such cases, the TV screen may display a black screen or an error message:

• 📺 Use official apps on your TV (e.g. Netflix on Samsung Smart) TV).
• 🔌 Connect your smartphone over a cable USB-C to HDMI (circumvention DRM).
• 🖥️ Run the stream to your computer via TeamViewer or ApowerMirror, and then display the image from the PC on TV.

2. Security risks

When using Wi-Fi Direct, data is transmitted without encryption, which theoretically allows you to intercept traffic, to minimize the risks:

• 🔒 Connect only to trusted devices (avoid public TVs at hotels or airports).
• 🛡️ Turn off the broadcast when it is not needed (Settings) → Wireless display → Shut down).
• 🔄 Update your firmware regularly MIUI — New versions are correcting vulnerabilities.

⚠️ Attention: if you are broadcasting a screen to a public monitor (e.g. in a conference room), turn off notifications and check if personal data (SMS, letters, passwords) are displayed on the screen. MIUI There is a function "Hidden mode" (Settings) → Notifications → Hidden notifications that hide confidential information when broadcasting.

3. Impact on productivity

Wireless broadcasting loads the processor and module of the Wi-Fi smartphone, which can lead to:

• 🔋 Fast battery discharge (up to 20-30% per hour when broadcasting video).
• 🌡️ Overheating (especially on budget models with passive cooling).
• 🎮 Laham in games (delay increases with high load on the game) CPU/GPU).

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To reduce the load, close the background applications before broadcasting and activate the Performance mode in the battery settings (Settings) → Battery → Performance mode).

FAQ: Answers to Frequent Questions