Cast in Xiaomi phone: what it is, how to turn on and configure the broadcast on TV

Introduction: why you need Cast in Xiaomi smartphones

Have you ever wanted to show vacation photos on a big TV screen without having to connect your phone to a cable? Or run a YouTube movie on TV right from your smartphone, controlling playback like a remote? To do this, Xiaomi has Cast, a wireless screen broadcast technology that turns your phone into a universal media center. But what exactly is behind this button in the notification curtain, and why does it sometimes not work?

In this article, we will explore all the nuances of Cast in Xiaomi, from basic principles of operation to hidden settings that will help stabilize the connection, POCO And Mi, which is how Miracast and Google Cast are different, and why your phone might not see the TV. MIUI, Android is not available in stock, such as streaming only sound or low latency games.

If you've tried to connect before, but you've encountered errors like "Device Unconnected" or "No Displays Supported," here you'll find step-by-step solutions to each problem. And yes, we'll keep security in mind -- why not broadcast the screen on public networks and how to limit access to your device.

What is Cast: In Simple Words

Cast (transmit) is a technology that wirelessly streams content from a smartphone to external devices: TVs, monitors, projectors or even other phones, and Xiaomi has implemented this feature through two main protocols:

• 📺 Miracast is a wireless screen transmission standard that works directly over Wi-Fi (without the Internet) and is supported by most modern TVs and smartphones.
• 🎯 Google Cast (formerly Chromecast) – a protocol from Google that requires a Cast-enabled device (such as Chromecast or Android TV) TV). Unlike Miracast, it is not a screen that is broadcasted, but a specific content (video, music).

V MIUI (Xiaomi firmware, Cast combines both of these protocols, and when you click on the broadcast icon in the notification curtain, the phone automatically scans the nearest devices and suggests connecting to those that support at least one of the standards:

• 🔄 Miracast duplicates the entire screen of the phone (including notifications and interface).
• 🎬 Google Cast only sends specific videos or audio to TV (like a YouTube movie or music from Spotify).

It’s important to understand that not all apps support Google Cast, like Netflix or Disney.+ They can block the broadcast because of licensing restrictions, and in those cases, only Miracast can help, but with it you get black bars on the sides of the screen (because of the difference in the ratio of the sides of the phone and TV).

What Xiaomi phones support Cast

Cast is available on all Xiaomi smartphones with MIUI 9 and newer, but there are nuances with protocol support and stability:

If your phone doesn’t support Google Cast, but you need to stream content (not screen), try:

1. Install Google Home from the Play Market.
2. Use LocalCast or AllCast to transfer files to TV.
3. Connect through DLNA (If the TV supports this protocol).

Attention! On custom firmware phones (like LineageOS), Cast may not work at all, due to the lack of proprietary Xiaomi drivers for wireless modules.

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Before buying a TV for Cast, check if it supports Miracast or Google Cast.Cheap models without Android TV They often only work with Miracast, which limits the broadcasting capabilities.

How to Enable and Configure Cast on Xiaomi

Cast connection takes less than a minute, if you know the algorithm. Here's a step-by-step guide to how to do this. MIUI 14 (on older versions, the steps may differ slightly):

1. Open the notification curtain (swipe down from the top edge of the screen).
2. Find the icon "Cast"** (or "Wireless Display", "Translation"). If it is not, swipe left on the quick settings panel and add it manually.
3. Press the icon. The phone will start scanning the available devices.
4. Choose your TV or Chromecast from the list. If the device doesn't show up, check if Miracast or Screen Mirroring is on TV.
5. Confirm the connection on both devices (sometimes you need to enter) PIN-TV-code).

If you want to broadcast only sound (for example, music to the column), MIUI there's a hidden option:

1. Connect to the device via Cast.
2. Open the Settings. → Connections and sharing → Cast.
3. Enable the option “Audio Only”** (not available on all models).

For games or movies, it is recommended to turn on Low Lag (if it is in the Cast settings) mode, which will reduce lag, but can worsen the quality of the picture.

Enable Wi-Fi on your phone and TV|Make sure both devices are on the same network (for Google Cast)|Shut down. VPN (It can block the connection)|Close background apps on your phone|Check the battery (broadcasting greatly discharges the phone)-->

Common Cast Problems and Solutions

Even on new smartphones Xiaomi Cast can work with failures.-5 mistakes and ways to correct them:

1.The phone doesn't see the TV

Reasons:

• 🔌 The TV or phone does not support a common protocol (for example, the TV only works through Miracast, and the phone searches Google Cast).
• 📶 Devices are connected to different Wi-Fi networks (for Google Cast they must be on the same network).
• 🔄 Screen Mirroring or Miracast is offline.

Decision:

• Reboot both devices.
• On TV, turn on the broadcast mode (usually in the network or screen settings).
• If you use Google Cast, connect your phone and TV to the same Wi-Fi network.

2. the connection is interrupted or lags

This is the most common problem, especially on Redmi's budget models.

• 📶 Weak Wi-Fi signal (Miracast requires stable 5GHz connection).
• 🔋 Low battery power (below 20%, the phone can automatically turn off power-intensive functions).
• 🎮 Background processes (e.g. downloading updates or working) VPN).

Decision:

• Connect the phone to the charger.
• Switch to a 5GHz network (if the router supports it).
• Enable Game mode in your phone settings (it optimizes performance).

3. No sound during broadcast

If there's a picture, but it's not sounding:

• 🔊 Check if the sound is off on the TV or phone.
• 🎧 Make sure that the Cast settings do not activate the “Video Only” mode** (occurs on some firmware).
• 🔄 Reconnect to the device.

4. Black screen or artifacts

This is a problem when the screen resolutions of the phone and TV are not matched.

• 📱 Change the broadcast resolution in the Cast settings (if you have such an option).
• 🔄 Reboot both devices.
• 🛠️ Update the TV firmware (especially relevant for Android TV) TV).

5.Apps block broadcasting

Some services (e.g. Netflix or Amazon Prime Video) prohibit broadcasting via Cast due to content protection.

• 🎬 Use Miracast (Duplicate Screen).

Attention! If you use custom firmware (e.g. Pixel Experience), Cast may not work due to the lack of Widevine drivers (they are responsible for secure content), in which case only returning to the official version will help. MIUI.

Hidden Cast chips in MIUI

In the firmware MIUI There are some hidden possibilities that few people know about, and they're going to make it easier to broadcast:

1. Broadcasting only sound

If you need to listen to music or podcast through a column or TV, but don’t want to broadcast the screen:

1. Connect to the device via Cast.
2. Open the Settings. → Connections and sharing → Cast.
3. Activate the “Audio Only” option** (available on Xiaomi) 12/13 Some of the Redmi Note models).

2. Low Delay Mode for Games

To stream games (for example, via Xbox Cloud Gaming or GeForce) NOW) into MIUI 14+ There is a special regime:

1. Connect to the TV via Cast.
2. In the broadcast settings, select “Low Lag”** (or Game Mode).

This will reduce lag, but may worsen the quality of the picture.

3. Recording of the broadcast screen

If you need to save what you are broadcasting (such as gameplay or presentation), MIUI There is a built-in screen recording function with Cast support:

1. Connect to the TV via Cast.
2. Open the notification curtain and press Screen Record.
3. Select the sound source ("Microphone" or "System Sounds").
4. Start recording - the video will be saved in the gallery.

4. Remote TV management

If your TV is running on Android TV, After connecting via Cast, you can:

• 🎮 Use your phone as a gamepad (for games).

To do this, after connecting, swipe down the phone screen - a control panel will appear.

5. Broadcasting to multiple devices simultaneously

V MIUI 14, an experimental multithreaded streaming feature (not available on all models) is introduced, which allows content to be sent to multiple devices at the same time, such as:

• 📺 On TV, video.
• 🔊 The speaker -- sound.

To activate:

1. Connect to the first device via Cast.
2. In Cast settings, click “Add Device”** and select the second.

Attention! Multi-device simultaneous streaming puts a lot of stress on the processor and battery, and only use this feature when you connect your phone to charge.

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Hidden Cast chips in MIUI Not available on all models. To check for them, update your firmware to the latest version and look at Settings. → Special facilities → Laboratory MIUI (if such a clause exists).

Safety in the use of Cast

Broadcasting your screen through Cast is convenient, but not always secure. Here are 3 key risks and how to avoid them:

1. Data interception in public networks

If you connect to Cast at a cafe, airport, or other place with public Wi-Fi, attackers can:

• 👀 Intercept broadcast content (such as passwords or personal photos).
• 🔄 Connect to your phone if you are not on TV PIN-code.

Decision:

• 🔒 Use Cast only on your home network.
• 🛡️ Turn it on. PIN-Protection on TV (in settings) Miracast/Google Cast).
• 🌐 Turn off the broadcast immediately after use.

Identity leakage

When you duplicate the screen through Miracast, everything is displayed on TV, including:

• 📩 Notifications from messengers.
• 💳 Data from banking applications.
• 📷 Personal photos and videos.

Decision:

• Before connecting, turn on Do Not Disturb mode** (to hide notifications).
• Use Google Cast instead of Miracast – it only broadcasts content, not the entire screen.
• Close all personal apps before broadcasting.

3. Malware devices on the Cast list

Sometimes suspicious names may appear on the list of available Cast devices (for example, for example, for the first time, UNKNOWN_DEVICE_123). It could be:

• 📡 Neighborhood devices with Miracast enabled.
• 🕵️‍♂️ Attackers trying to connect to your phone.

Decision:

• 🚫 Do not connect to unknown devices.
• 🔄 Reboot your phone and check the list again.
• 🛠️ Update the firmware - in new versions MIUI Improved protection against unauthorized connections.

If you notice your phone spontaneously connects to unknown devices via Cast, it could be a sign of a virus. Check the phone with an antivirus (like Dr.Web or Malwarebytes) and reset your network settings in Settings → System system → Resetting settings → Resetting Wi-Fi and Bluetooth settings.

FAQ: Frequent questions about Cast in Xiaomi