Introduction: why you need a wireless display on a smartphone
Wireless screen broadcasting technology allows you to display images from your Xiaomi Redmi 8 smartphone to a large screen TV, monitor or projector without using cables, which is convenient for watching movies, presentations, games or showing photos to friends, based on Miracast and Google Cast standards, which are supported by most modern devices.
The Redmi 8, released in 2019, features all the hardware components needed for wireless broadcasting: Wi-Fi Direct module and Miracast protocol support. However, not everyone knows how to activate this feature correctly and what devices it is compatible with. In this article, we will break down all the nuances from basic configuration to solving typical problems.
It is important to understand that a wireless display is different from DLNA (It's a real-time, full-screen smartphone, not just a single video or a photo, that opens up more possibilities, but requires a stable connection and a compatible receiver.
How does the wireless display work on Xiaomi Redmi 8
The Wireless Display (or Miracast) technology on Redmi 8 is based on a direct connection between the smartphone and the receiver (TV, monitor, adapter) via Wi-Fi Direct protocol.
- 📶 No router required – devices are connected directly.
- 🔄 Two-way data transfer: you can control your smartphone from a TV screen (if supported).
- 🎮 Minimal latency – suitable for games and videos (with good signaling).
- 🔋 Increased battery consumption – screen broadcasting loads the processor and Wi-Fi module.
On the Redmi. 8 Qualcomm Snapdragon chipset 439, which supports hardware encoding of video in format H.264. This allows you to broadcast the image with resolution before 1920×1080 upon 30 But the real quality depends on the:
- 📡 Wi-Fi signal power (the closer the device, the more stable the connection).
- 🖥️ Receiver Characteristics (not all TVs support Full) HD Miracast).
- 🔄 Network congestion (other devices using the same Wi-Fi range may interfere with the network).
Unlike the Google Cast (used in Chromecast), Miracast does not require an internet connection, but has a range limit – effective operation is possible at a distance of up to 10 meters in line of sight. If your TV doesn’t support Miracast directly, you’ll need an external adapter (e.g. Xiaomi Mi). TV Stick or Anycast).
Turn-based Wireless Display setup on Xiaomi Redmi 8
To activate the wireless display, follow the following steps:
- Open “Settings” on your smartphone and go to the Connections and Sharing section → Wireless display.
- Turn on the switch at the top of the screen, and you'll start looking for available devices.
- Select your TV or adapter from the list. If the device doesn't show up, make sure the TV is on Screen Mirroring (or Miracast).
- Confirm the connection on both devices. Some TVs may require input PIN-code.
If the connection fails, check:
Make sure the TV supports Miracast (see model guide)
Turn it off. VPN and energy saving modes on a smartphone
Reboot both devices
Update your firmware on Redmi 8 and TV to the latest version-->
Redmi 8 with firmware MIUI 12+ The path to settings may be slightly different: Settings → Screen. → Wireless display: If partition is missing, update the system or check your region compatibility (in some versions) MIUI Russian function is hidden).
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If the image on TV is displayed with a delay, try to reduce the resolution of the broadcast in the Wireless Display settings (usually there are options). 720p or 1080p).
Compatible with Xiaomi Redmi 8 TVs and adapters
Not all TVs support Miracast out of the box, and here's a table of compatibility for popular brands:
| Brand TV | Miracast support | Notes |
|---|---|---|
| Samsung | Yes (Models 2013)+) | The function is called Screen Mirroring. |
| LG | Yes (Models with WebOS 2.0)+) | Use the Screen section → Phone screen |
| Sony Bravia | Yes (Models 2015)+) | You need to enable Miracast in your network settings |
| Xiaomi Mi TV | Yeah (all models) | Automatic detection through MIUI |
| Old TV (until 2012) | No. | You will need an external adapter (such as Anycast). M2 Plus) |
For TVs without built-in Miracast support, you can use external adapters:
- 📺 Xiaomi Mi TV Stick – supports Miracast and Google Cast, price ~3000₽.
- 🔌 Anycast M2 Plus – universal adapter with port HDMI, It works with any TV.
- 🎮 Amazon Fire TV Stick supports Screen Mirroring for Android.
How to check Miracast support on TV?
Redmi 8 also allows you to stream your screen via Google Cast if you have a Chromecast-enabled device (like Google Nest Hub or Google Nest Hub). NVIDIA Shield. That's what it is:
- Install the Google Home app from the Play Market.
- Connect to the same Wi-Fi network as the Chromecast device.
- In the app, select the device and click “Translate screen”.
Common Problems and Their Solutions
When using Wireless Display on Xiaomi Redmi 8, users often face the following problems:
⚠️ Warning: If the TV image flashes or slows after you connect, it may be caused by overloading the Wi-Fi channel. Try disconnecting other devices from the network or switching the router to a 5 GHz channel (if supported).
Problem 1: The TV is not detected.
- 🔄 Reboot both devices.
- 📱 On your smartphone, turn off and turn on Wi-Fi and Bluetooth again.
- 📺 Check if Screen Mirroring is on on TV.
- 🔧 Update the firmware on Redmi 8 (up-to-date version) MIUI — 12.5+).
Problem 2: Latency of sound or video
This is a typical problem with a weak Wi-Fi signal.
- 📶 Move your smartphone closer to the TV (optimally, no more than 3 meters).
- 🔌 Connect the TV to the outlet (some adapters save energy when working from the power supply). USB).
- 🎵 In the Wireless Display settings, select Performance Mode (if available).
Problem 3: No sound when broadcasting
Sometimes the sound can be transmitted through the speakers of a smartphone, not the TV.
- Open the notification bar on Redmi 8 during the broadcast.
- Click on the Wireless Display notification.
- Select to broadcast audio on TV (or similar option).
⚠️ Note: Some apps (such as Netflix or Disney)+) They block the screen broadcast because of DRM-In this case, the sound and video may be missing or displayed with artifacts.
Alternative ways of broadcasting the screen
If Miracast doesn’t work or doesn’t like the quality, consider alternative methods:
1. Through cable. USB-C → HDMI
Redmi 8 will require an adapter that supports DisplayPort Alt Mode (e.g. Baseus). USB-C to HDMI). Advantages:
- 🎮 Zero Latency – Suitable for Games.
- 🔋 Charging during broadcast (if adapter with port) USB-PD).
- 📺 Support 4K (limited only by the possibilities of TV).
Disadvantage: You need to buy an adapter (~1500–3000₽) tap.
2. Through streaming apps (DLNA)
Apps like LocalCast or BubbleUPnP only allow you to stream media files (video, photos, music), but not the entire screen.
- 📱 It works even on old TVs with support. DLNA.
- 🎵 No sound delay.
- 🔄 You can stream files from cloud storage.
3. through third-party services (TeamViewer, ApowerMirror)
These solutions require software installation on both devices, but offer additional features:
- 🖥️ Remote control of a smartphone with a PC.
- 📡 Internet access (not just local networking).
- 🔒 Encryption of transmitted data.
Cons: high delay and the need to register in the service.
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Miracast is the most versatile way to broadcast the screen for Xiaomi Redmi 8, but if you have problems with the connection, you should try alternatives: a cable adapter for games or a cable adapter for games. DLNA media-file.
Optimizing the performance during translation
To reduce lag and improve image quality, follow these tips:
1. Smartphone settings:
- 🔋 Enable Performance Mode in Battery Settings.
- 📵 Turn off background synchronization of applications (for example, Facebook or VKontakte).
- 🔄 Close all unnecessary apps before broadcasting.
2. router settings (if used):
- 📶 Switch to 5 GHz (less interference).
- 🔒 Turn off QoS (if enabled) – it may limit bandwidth.
- 🔄 Set a fixed channel (e.g. 36 or 40) instead of automatically selecting.
TV settings:
- 📺 Enable Game Mode to reduce delay.
- 🔊 Turn off sound processing (such as Dolby Atmos) if there are lags.
To test the delay, you can use the Screen Latency Tester app (available from the Play Market). The normal value for Miracast is 50-100 ms. If the delay exceeds 200 ms, the broadcast will not be suitable for gaming.