Broadcasting the smartphone screen on the big screen Xiaomi TV 4S It's a new way of looking at things from high-resolution photos to streaming games without delay, but many users are facing connectivity problems -- the TV can't find the device, the image is slowing down or the sound is lost. In this article, we will analyze all current methods of broadcasting (including hidden functions). MIUI), optimal settings for 4K HDR-Content and Typical Errors Solving.
Features of Xiaomi TV 4S (model L43M5-5ASR, L50M5-5ASR Support for several wireless transmission protocols: Miracast, DLNA But the choice of method depends not only on the model of the TV, but also on the version. Android/iOS on a smartphone, as well as from firmware TV (topical 2026 year — MIUI TV 3.0+). If you tried to connect through the standard menu and got the error “I failed to connect to the device”, most likely, the problem lies in network settings or conflict of protocol versions.
Important: Xiaomi TV 4S does not support Apple AirPlay natively – to broadcast from the iPhone will require workaround solutions (about them in the section about iOS). and owners of Android devices with MIUI 14+ available exclusive mode “Fast broadcast”, which reduces the connection time to 2 seconds.
1. Preparation of the Xiaomi 4S TV for broadcast
Before setting up the connection, make sure the TV is ready to receive the signal. Most connection problems arise from missed basic settings.
First, check the firmware version.
- Open Settings → About TV → Update system.
- If the version is older than MIUI TV 2.5.18, update the software via the Internet or manually (download the firmware file only from the official Xiaomi website).
Second, activate the signal reception modes:
- 📺 Miracast/Wi-Fi Direct: Settings → Connections → Screen mirroring → Turn on.
- 🔄 DLNA: Settings → Connections → Devices nearby → Turn on.
- 📱 Google Cast (Android): Requires you to install the Google Home app on your phone.
Third, reset your network settings if the TV was previously connected to other devices and is no longer visible.
Settings → System → Reset → Reset Network settings⚠️ Note: If the TV is connected to the Internet via PPPoE (providers like Rostelecom or Beeline), after the reset, you will have to re-enter the username / password from the account.
2. broadcast from Android-smartphone (Miracast/Wi-Fi Direct)
The most reliable way for owners of Xiaomi, Samsung, Realme and other Android devices is to use the built-in Miracast protocol, which works without the Internet, but requires both devices to be on the same local network (or connected directly via Wi-Fi Direct).
Step-by-step:
- On TV: go to Settings → Connections → Screen Mirror and select “Connect to Device”.
- On your smartphone: For MIUI 12-14: swipe down notification panel → Translation → select Xiaomi TV 4S. For pure Android (Pixel, Nokia): Settings → Connected devices → Broadcast → Start streaming.
Confirm the connection on the TV (a request will appear with the pairing code).
If the image is slowing down or tearing:
- 📶 Switch your TV and phone to 5GHz in Wi-Fi settings (less interference).
- 🔧 In the stream menu on your smartphone, select "Optimize for games" (reduces latency to 30 ms).
- 📵 Disable background apps that consume traffic (such as TikTok or YouTube in autoplay).
Television and phone connected to the same Wi-Fi network
The TV is on "Screen Mirror" mode.
VPN is disabled on the smartphone (interfering with local connection)
Charging the phone > 30% (broadcasting severely drains the battery)-->
⚠️ Note: On some of the firmware Xiaomi TV 4S (for example, MIUI TV 2.3.45) Miracast is not stable with Android 13 phones+. The solution is to upgrade the TV to MIUI TV 3.0+ Or use an alternative method (see the section on Google Cast).
3. Stream from iPhone to Xiaomi TV 4S (without AirPlay)
Apple limits AirPlay support to its devices and certified partners (like LG or Samsung), so streaming from iPhone to Xiaomi TV 4S will require workarounds.
Method 1: Mirror applications (paid)
- 📱 ApowerMirror or LetsView – create a virtual server on the TV, which connects to the iPhone.
- 💰 Cost: ~300–500 ₽ Full version (free versions limit the resolution to the full version) 720p).
Method 2: Lightning → HDMI adapter
If you want to stream without delay (for example, for presentations or games), use the official Apple Lightning Digital adapter. AV Adapter (+ cable HDMI). Minus is price (~3 500 ₽) the need for physical connection.
Method 3: DLNA through Applications
For viewing photos and videos (but not screens!)
- 🎬 VLC (Free of charge – broadcasts media files DLNA.
- 📷 Photo Video Cast – specializes in photography.
Android (Xiaomi, Redmi, POCO)
Android (another brand)
iPhone (iOS)
Other-->
| Method | Delay. | Max, permission. | Required SOFTWARE |
|---|---|---|---|
| Miracast (Android) | 30-80 ms. | 4K@30fps | Built-in |
| Google Cast | 100-200 ms. | 1080p@60fps | Google Home |
| ApowerMirror (iOS) | 150-300 ms | 1080p@30fps | Paid application |
| HDMI-adapter | 0 ms. | 4K@60fps | adapter Lightning/USB-C → HDMI |
4. Broadcast via Google Cast (Chromecast)
If Miracast doesn’t work or you need to stream specific apps (like YouTube or Netflix), use Google Cast.This method requires connecting your TV and phone to the same Wi-Fi network.
Instructions:
- Install Google Home (for Android) or Google TV (for iOS).
- On TV: Settings → Apps → Google Play Store → Install Google Cast Receiver (if not installed).
- In the Google Home app: Press + → Set up your device → New device. Select Xiaomi TV 4S from the list. Confirm the code on your TV.
"Translation"
Xiaomi TV 4S (Cast)
Features:
- 🎮 Supports only individual apps (not the entire screen) streaming.List of compatible: YouTube, Netflix, Spotify, Google Photos.
- 🔊 The sound is automatically transmitted (unlike Miracast, where a separate setup is sometimes required).
- 📡 It works more stable than Miracast on weak routers (for example, TP-Link). TL-WR840N).
💡
If Google Cast doesn’t find the TV, temporarily turn off the firewall on the router (port 8009 must be open) or reboot both devices.
Wired connection via HDMI (for minimum delay)
Wireless methods always cause a delay (30 ms to 1 second), which is critical for games or video editing. HDMI-connection.
What you need:
- 📱 For Android: Adapter USB-C/Micro-USB → HDMI (For example, Baseus HDMI Alt Mode, ~1 200 ₽).
- 🍎 For iPhone: The Official Lightning Digital AV Adapter (~3 500 ₽).
- 🔌 Cable HDMI 2.0 (length 3 metre 4K@60fps).
Setting:
- Connect the adapter to the smartphone, and HDMI-cable to the TV (port) HDMI 1/ARC).
- On the TV, select the signal source: Entry → HDMI 1.
- On your smartphone: For Android: turn on "Display Mode" in the adapter settings (usually a notification appears). For iOS: the broadcast will start automatically.
Advantages of the method:
- 🎮 Delay 0 ms (ideal for the PUBG Mobile or Call of Duty).
- 📺 Support 4K HDR Dolby Vision (if the adapter and cable support).
- 🔋 Does not drain the battery of the phone (unlike wireless methods).
⚠️ Attention: Cheap adapters (< 800 ₽) often 4K@60fps They give out artifacts. Check the specifications before you buy them -- look for the labels "HDMI 2.0" and "4K HDR".
6. Solving Typical Translation Errors
Even with the right setup, you can have failures, and here are the most common mistakes and their solutions:
| Mistake. | Reason. | Decision |
|---|---|---|
| "I couldn't connect to the device." | Conflict IP-addresses or closed ports on the router | Restart router, disable VPN on phone |
| Image brakes/tears | Weak Wi-Fi signal or network congestion | Switch to 5 GHz, disconnect other devices from the network |
| No sound. | In the broadcast settings, the "Video Only" mode is selected | On the phone: Settings → Sound → Sound output → Xiaomi TV 4S |
| TV not visible on the list of devices | Wi-Fi Direct or outdated firmware disabled | Upgrade TV to MIUI TV 3.0+, turn on screen mirroring |
Additional advice:
- 🔄 If the broadcast stops every 5-10 minutes, turn off the power saving on the phone for the Translation app (Settings) → Battery → Energy consumption of applications).
- 📡 For stable operation of Google Cast recommended router with support MU-MIMO (For example, Xiaomi Router AX6000).
- 🔧 If after updating the TV sound disappeared during the broadcast, reset the sound settings: → Sound. → Resetting the sound settings.
How to check the Wi-Fi speed between your phone and TV?
7. Optimization of broadcast quality
By default, the TV and phone choose the "medium" settings of the broadcast to save resources. 4K HDR-In the movies, follow these steps:
On the Xiaomi TV 4S:
- Settings → Image: → Image mode → Cinema (for) HDR-content).
- Settings → Sound. → Sound format → Auto (Dolby).
- Settings → System → Screen resolution → 3840×2160 (4K).
On an Android smartphone:
- 🔋 Activate Performance in the battery settings for the Miracast app.
For iPhone (when using HDMI adapter):
- 🎥 In Settings → Camera. → Select "High Quality" (for video streaming from the camera).
- 🔊 In Settings → Music. → Select "Digital Output" to transmit sound through HDMI.
💡
To stream 4K@60fps without loss of quality, use the combination: HDMI 2.0 cable + adapter with DisplayPort Alt Mode. Wireless methods (Miracast, Cast) are limited to 4K@30fps due to Wi-Fi bandwidth.