Why you need to broadcast from phone to TV and what you need
Broadcasting the screen of the smartphone on the big screen Xiaomi Mi TV 4S opens up a lot of possibilities, from watching movies in high resolution to showing presentations or streaming games. However, not all users know that this does not require you to buy additional adapters โ modern Xiaomi TVs support wireless technologies Miracast, DLNA and even Apple AirPlay (on some models).
In this article, we will analyze 5 proven methods of broadcasting: from standard Screen Mirroring to connecting via the Internet. HDMI-Adapter. We'll focus on typical issues, like why an image might slow down or why the TV can't see the phone. TV 4S (including modifications 4S 32", 4S 43", 4S 50" and 4S 55) with firmware MIUI TV 3.0 and later.
Before you start, make sure that:
- ๐ถ Telephone and TV connected to the same Wi-Fi network (for wireless methods).
- ๐ Screen Mirroring is enabled on the TV (in the Settings menu) โ Connection and sharing).
- ๐ฑ On the smartphone activated the developer mode (if required for debugging).
- ๐ The charge level of the phone is not lower than 30% โ the broadcast consumes the battery faster than usual.
Method 1: Wireless streaming via Miracast (Screen Mirroring)
The most versatile method is to use Miracast technology, which is built into most of today's Android smartphones and Xiaomi TVs, which allows you to duplicate the screen without wires, but requires a stable Wi-Fi connection.
- On TV: ๐บ Open the Settings (button with a gear on the remote control). ๐ Go to Connection and Sharing โ Screen Mirroring. โก Turn on the option and wait until the TV starts searching for devices.
On the phone (Android):
- ๐ฑ Open the Settings. โ Connections โ Screen broadcast (the name may differ from Smart View, Wireless Display, or Miracast).
- ๐ In the list of available devices, select your Xiaomi Mi TV 4S.
- โ Confirm the connection on both devices.
If the TV is not on the list, check:
- ๐ Restart the router โ sometimes it interferes with the double NAT or blockage.
- ๐ต Make sure your phone has power saving turned off โ it can block background data transmission.
- ๐ง Update the TV firmware to the latest version (relevant for models of 2018-2020 release).
โ๏ธ Check before connecting to Miracast
โ ๏ธ Note: Some Xiaomi smartphones (e.g. Redmi Note 10 or Xiaomi) POCO X3) Screen Mirroring feature hidden in the menu โ Wireless display. If you don't find it, search by settings.
Method 2: Streaming via Google Cast (for Android and iOS)
Google Cast (or Chromecast built-in) is another popular protocol that supports Xiaomi Mi TV 4S since the firmware MIUI TV 2.0.18. Unlike Miracast, it allows you to broadcast not the entire screen, but only individual applications (for example, YouTube, Netflix or Google Photos).
How to connect:
- ๐บ On your TV, open an app that supports Cast (like YouTube).
- ๐ Click on the broadcast icon (usually in the upper right corner) and select your Mi. TV 4S.
- ๐ฑ On your phone, open the same app and start playing โ the video will automatically appear on your TV.
List of apps that support Google Cast on Xiaomi Mi TV 4S:
| Annex | Cast support | Notes |
|---|---|---|
| YouTube | โ Yes. | Broadcasting up to 4K HDR (if TV is supported). |
| Netflix | โ Yes. | Requires subscription and the latest version of the app on the TV. |
| Google Photo | โ Yes. | It allows you to show slideshows from albums. |
| Spotify | โ No. | The Mi TV 4S only works via Bluetooth or Aux. |
| Twitch | โ ๏ธ Partially. | Broadcasting is possible, but with a delay of up to 2-3 seconds. |
Important: If the app on your phone doesn't see TV, check if the "Google Play Services" option is enabled in Mi settings TV 4S (Settings โ Annexes โ System applications. Cast won't work without it.
Method 3: Connecting through HDMI-adapter (for stability)
If wireless methods fail (e.g., an image lags or breaks a connection), the best option is to wired a connection through a wired connection. HDMI-It's gonna take an adapter:
- ๐ adapter USB-C/HDMI (for modern smartphones, or Micro-USB/HDMI (old-model).
- ๐บ HDMI-cable (usually with an adapter).
- โก Power supply for adapter (some require charging connection).
Step-by-step:
- ๐ Connect the adapter to the phone and then connect it to the TV through HDMI.
- ๐บ On the Xiaomi Mi remote TV 4S select the source of the signal HDMI (source or input button).
- ๐ฑ On the phone may need to turn on mode HDMI In the screen settings (usually a notification appears).
Advantages of this method:
- โก No delay โ ideal for high-resolution games or videos.
- ๐ Does not drain the phone battery (if the adapter is powered).
- ๐ฎ Supports Game Mode on TV (reduces input lag).
โ ๏ธ Note: Not all adapters support audio output. If there is no image or sound on the TV, check the adapter's compatibility with your phone model (e.g., Xiaomi). 11T Pro needs an adapter with DisplayPort Alt Mode support).
๐ก
If the adapter is not working, try connecting it through USB-externally powered hub โ sometimes the phone doesnโt have enough power to transmit the signal.
Method 4: Stream from iPhone to Xiaomi Mi TV 4S (AirPlay)
Owners of iPhones or iPads can stream the screen to Xiaomi Mi TV 4S via Apple AirPlay, but this will require additional customization.The fact is that Xiaomi TVs do not support AirPlay out of the box, but this feature can be activated through third-party apps.
Instructions for iOS:
- ๐บ Install the AirScreen app on your TV (available from the Mi App Store or via the APK).
- ๐ง Launch the app and enable AirPlay support.
- ๐ฑ On your iPhone, swipe down from the top right corner (Center Control) and press Screen Mirroring.
- ๐ In the list of devices, select your Mi TV 4S (The name will be displayed as AirScreen-[model]).
Limitations of the method:
- ๐ต The sound can be transmitted with a delay (especially in games).
- ๐ถ Video quality is limited 1080p (Even if the TV is still on 4K).
- ๐ฐ AirScreen has restrictions in the free version (advertising, time limit).
How to install APK on Xiaomi Mi TV 4S?
Method 5: Broadcasting through USB-cable (MHL/OTG)
A little-known, but working way is to connect your phone to the TV through a phone. USB-cable MHL (Mobile High-Definition Link or OTG. This method is suitable for older models of smartphones (until 2018), where there was still a Micro-USB connector.
What you need:
- ๐ MHL-Adapter (e.g. Xiaomi) MHL 2.0).
- ๐บ HDMI-cable.
- โก Power supply (some adapters require a connection to the socket).
How to connect:
- ๐ Connect the phone to MHL-adapter.
- ๐บ Connect the adapter to the TV through HDMI.
- โก Connect the adapter power (if necessary).
- ๐บ On the TV, select the source. HDMI.
Compatible with Xiaomi models:
| Model phone | Support for MHL | Max, permission. |
|---|---|---|
| Xiaomi Mi 5/5s | โ Yes. | 1080p |
| Redmi Note 4/4X | โ Yes. | 720p |
| Xiaomi Mi 6 | โ No. | โ |
| POCO F1 | โ ๏ธ Partially. | 1080p (powered adapter required) |
โ ๏ธ Note: New Xiaomi smartphones (starting with Mi 8) support MHL Removed โ instead of using DisplayPort Alt Mode USB-C. They need an adapter. USB-C โ HDMI (see method 3).
Solving the Problem: Why the Broadcasting Is Not Working
Even with the right setup, there can be failures, and let's look at the typical errors and how to fix them:
1.The TV doesn't see the phone
Possible causes and solutions:
- ๐ Different Wi-Fi networks: Make sure both devices are connected to the same access point (not the guest network!).
- ๐ต Blocking Multicast: In the router settings, enable the option IGMP Snooping or Multicasting.
- ๐ง Outdated firmware: Update TV software through Settings โ Updating the system.
- ๐ก๏ธ Firewall/antivirus: On your phone, temporarily turn off protection (e.g., Avast or 360 Security).
2. The image is braking or tearing.
How to improve the quality of the broadcast:
- ๐ถ Switch to 5GHz: 2.4GHz networks are often congested - use less-busted range.
- ๐ก Reduce distance: Place your router closer to your TV (or use a Mesh system).
- ๐ฎ Reduce resolution: In the broadcast settings on your phone, select 720p instead 1080p.
- ๐ Use a wired connection: For games or videos in 4K better HDMI-adapter.
3. No sound during broadcast
What to check:
- ๐ Loudness on phone: Sometimes the sound is broadcast from the phone, not from the TV.
- ๐ง Bluetooth devices: Turn off headphones or speakers - they can intercept audio.
- ๐ง Settings HDMI: In the TV menu (Settings) โ Sound. โ Exit HDMI) choose PCM auto.
๐ก
If the broadcast is constantly interrupted, try to turn off the option on the phone "Adaptive brightness" - it can conflict with wireless data transmission.