Xiaomi Mi TV 4S supports several ways to wirelessly and wiredly connect to smartphones, but not all users know how to properly configure synchronization. In this article, we will analyze 5 proven methods - from standard Miracast to using HDMI adapters, and also solve typical problems: why the phone does not see TV, how to enable screen duplication on Android 12+ and what to do if the image is lagging.
The Mi TV 4S (L43M5-5ASN, L50M5-5ASN, etc.) features a built-in Wi-Fi Direct module that makes it easier to connect without a router. However, in practice, users face nuances: for example, the iPhone requires additional applications for Miracast, and on Android 10 and below, the Screen Mirroring feature may not work without a firmware update. We tested all methods on current versions of the software (2026) and collected working solutions.
1. Connect via Wi-Fi Direct (without router)
The fastest way to sync Xiaomi Mi TV 4S and phone is to use Wi-Fi Direct technology, which creates a direct network between devices, which is convenient for streaming videos or presentations. Importantly, both devices must support this protocol (on the Mi TV 4S it is the default).
How to turn on:
- 📺 On the TV remote, press Menu. → Settings → Wi-Fi → Wi-Fi Direct and activate the function.
- 📱 On your phone (Android) open the settings → Connections → Wi-Fi → Wi-Fi Direct (on Samsung, the path may be different: Settings) → Connections → Additionally. → Wi-Fi Direct).
- 🔍 In the list of available devices, select your Mi TV 4S (type-name DIRECT-MiTV4S-XXXX).
- ✅ Confirm the connection on both devices. Once synchronized, you can transfer files or duplicate the screen.
Limitations of the method:
- ❌ On iPhone, Wi-Fi Direct is not supported – only through third-party apps (e.g. ApowerMirror).
- ❌ The data transfer speed is lower than the HDMI, Possible delays in broadcasting games.
- ❌ Some Xiaomi models (e.g. Redmi Note 10) require the inclusion of developer mode for stable operation.
💡
If the Mi TV 4S doesn't appear in the Wi-Fi Direct list, reboot both devices and search again. Sometimes resetting the network settings on the TV helps (Settings → System → Reset → Network Reset).
Screen duplication by Miracast (Screen Mirroring)
Miracast is a wireless screen broadcast standard that all Mi TV 4S support (starting with MIUI TV 1.6+ firmware) and unlike Wi-Fi Direct, it duplicates the entire phone interface, not just media files, and is suitable for watching movies, streaming or presentations.
Instructions for Android:
- On TV: Settings → Connections → Wireless display (or Screen Mirroring).
- On your phone: open Settings → Connections → Transfer to the screen (on Xiaomi/Redmi: Settings → Connection and Sharing → Screen Transfer).
- Select your Mi TV 4S and confirm your connection.
An iPhone will require an app (like Screen Mirroring for Xiaomi TV from the App Store) as Apple does not support Miracast natively.The alternative is to use AirPlay via an adapter (like Xiaomi Mi TV Stick).
Both devices are connected to the same Wi-Fi network.|Screen Mirroring is on the TV.|Power saving mode on the phone is off|TV firmware updated to the latest version-->
⚠️ Note: If the image on the TV is behind the sound, reduce the resolution of the broadcast in the Miracast settings on the phone (usually the option is hidden in Settings). → Additionally. → Broadcast quality. TV 4S permittingly 4K choose 1080p smoothly.
3. Wired connection via HDMI (for Android)
If wireless methods fail, the most reliable way is to connect directly via an HDMI cable, requiring a USB-C/Micro-USB → HDMI adapter (depending on the phone’s connector) and suitable for the Xiaomi Mi TV 4S of all modifications, including 43, 50 and 55.
Step-by-step:
- 🔌 Connect the adapter to the phone and HDMI-cable HDMI 1/2 back-end.
- 📺 On the Mi remote. TV 4S Select the source of the signal: Input → HDMI 1/2.
- 📱 On the phone may need to turn on mode HDMI in screen settings (on Xiaomi: Settings) → Display. → Regime. HDMI).
Important nuances:
- ⚡ The phone should be supported HDMI Alt Mode (most Xiaomi models since Mi 8 can do it).
- 🔋 When connected, the phone will discharge faster – use the charger.
- 🎮 The best way to play is to have a minimum of time (about) 10-20 miss).
| Model phone | Adapter type | Support 4K@60Hz | Notes |
|---|---|---|---|
| Xiaomi 12/13 | USB-C → HDMI | ✅ Yes. | Requires an adapter with DisplayPort 1.4 chip |
| Redmi Note 10/11 | USB-C → HDMI | ❌ No (1080p@60Hz) | You may need to enable debugging over USB |
| POCO X3/X4 | USB-C → HDMI | ✅ Yes. POCO X4 GT) | On older models, image artifacts are possible |
| iPhone 11/12/13 | Lightning → HDMI | ✅ Yes. | We need a certified Apple adapter. |
4. USB connection (for media files)
If you just want to view a photo or video from your phone on a large screen, a USB connection is suitable. Mi TV 4S supports reading files from external drives, but there are restrictions on formats (for example,.mkv may not play without additional codecs).
How it works:
- Connect your phone and TV with a USB-A → USB-C/Micro-USB cable (use the USB 2.0 port on your TV).
- Select the source from the remote: Input → USB.
- On your phone, select File Transfer Mode (not Charge!).
- Use the remote to navigate through files on your phone.
⚠️ Attention: On Android 11+ You may need to unlock access to files in the developer settings (Settings) → The phone. → Assembly number (7 taps) → For developers → Debugging by USB). Without it, the TV won’t see the contents of the memory.
Critical feature: Mi TV 4S supportive MTP-Protocol for iPhone – Connecting to USB The alternative is to use iTunes on your PC to sync your media files and then copy them to a flash drive for your TV.
5.Use of streaming applications (DLNA/UPnP)
If the built-in features don't work, you can use third-party applications that support DLNA or UPnP. They allow you to stream content from your phone to Mi TV 4S over a local network.
- 📱 LocalCast (Android) – Supports subtitles and video streaming.
- 🍎 AllCast (iOS/Android) — It works with Chromecast and DLNA.
- 🎬 VLC — can broadcast the screen through UPnP (you need to turn on the settings).
How to set up:
- Install the app on your phone.
- Connect your phone and TV to the same Wi-Fi network.
- In the application, select the file to broadcast and specify the Mi TV 4S as the output device.
Why does TV not see the phone in the DLNA-annexes?
6. Solving typical connection problems
Even with the right setup, users are faced with errors, and consider the most common and ways to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| The phone doesn't see the Mi TV 4S in Miracast | Outdated firmware of TV or phone | Update the software on both devices (Settings → System Update) |
| Image lagging or slowing down | Weak Wi-Fi signal or high network load | Switch to 5 GHz or use HDMI |
| No sound when broadcasting | The phone is on mode Video only | In Miracast settings, select Sound via HDMI/Wi-Fi |
| iPhone does not connect to TV | There is no support for Miracast | Use Apple. TV or Lightning adapter → HDMI |
If none of these methods work, reset the network settings on the TV:
Settings → System → Reset → Network Reset → Confirm💡
Before reset, write down your Wi-Fi network data – after the procedure, all saved passwords will be deleted.
7. Alternative devices for connection
If the built-in Mi TV 4S features are not suitable, you can use external adapters:
- 📦 Xiaomi Mi TV Stick – converts any TV to Smart TV Chromecast and AirPlay support.
- 🖥️ Google Chromecast – for streaming from Android and iOS via Google Home.
- 🔄 HDMI-Switch – if you need to connect several devices at the same time.
The advantage of external devices is that they often support more formats and have a more stable connection. For example, Mi TV Stick allows you to broadcast the screen from the iPhone without lags, which is not always possible through the built-in Miracast.