Modern multimedia capabilities allow you to transform any TV into a full-fledged home theater using only wireless technology. Owning a branded device DEXP Provides access to Smart TV functionality, which is based on the Android TV operating system or native shells with support for network protocols. This allows users to stream content directly from their smartphone, eliminating the need for physical HDMI or USB cables.
Synchronizing mobile devices with TV panels relies on a local Wi-Fi network, ensuring high data transfer rates. For successful implementation, it's critical that both devices are on the same subnet and have a stable connection to the router. In this article, we'll cover the technical details of setup, examine data transfer protocols, and troubleshoot common connection errors.
There are several main technologies for wireless image transmission, each with its own advantages. The method you choose depends on the model of your smartphone, the operating system version, and the hardware capabilities of the TV itself. Understanding how these technologies work will help you choose the best scenario for watching high-definition movies.
Miracast is one of the most popular standards that allows for real-time screen image transmission without quality compression. This protocol runs on top of Wi-Fi Direct, creating a direct communication channel between devices. To activate this feature on TVs DEXP Often an internet connection is not required, it is enough for the Wi-Fi module to be turned on.
Unlike Miracast, the technology DLNA (Digital Living Network Alliance) is designed for transmitting media content (video files, music, photos) over a local network. Here, the phone acts as a server (DMS), and the TV acts as a renderer (DMR) that plays the file. This method is ideal for watching pre-downloaded movies, as it requires less connection stability in real time.
The function deserves special attention Google Cast (Chromecast built-in), which is built into many modern Smart TV models. It allows you to stream content from aggregator apps like YouTube or Netflix directly from internet servers to your TV, using your phone as a remote control. This significantly reduces the load on your smartphone's battery, freeing it up for other tasks.
Technical requirements and equipment preparation
Before you begin setting up a wireless connection, you need to make sure your equipment meets the minimum technical requirements. TVs DEXP The U43, U50, U55 series and newer typically feature a built-in Wi-Fi module supporting 802.11n and 802.11ac standards. Older models may require an external USB Wi-Fi adapter compatible with the specific firmware version.
Your home network configuration is important. For stable video streaming in Full HD or 4K resolution, the 5 GHz frequency band is recommended. This band is less congested with neighboring networks and provides sufficient throughput for streaming data without compression artifacts.
Make sure your smartphone has the latest version of the operating system. Android frequently releases security patches and Wi-Fi driver updates, which can affect the stability of the connection to external displays. Also, make sure your TV DEXP The software has been updated to the latest available version.
- 📱 A smartphone with Android 5.0+ or iOS 12.0+ and a working Wi-Fi module.
- 📺 DEXP TV with Smart TV support and built-in Wi-Fi module.
- 📡 A router that supports 802.11n/ac/ax and a 5 GHz band (recommended).
- 🔌 Stable power supply for all devices to avoid interruptions during software updates.
There's a common misconception that Miracast requires internet access. In fact, a local connection between devices is sufficient for screen mirroring. However, if you plan to stream content from online cinemas, an active, high-speed internet connection is essential.
Setting up a DEXP TV to receive a signal
The first step in setting up a wireless network is to properly configure the receiving device. TV Interface DEXP The process may vary slightly depending on the year of manufacture and the version of Android TV installed, but the logic remains the same. Go to the main menu and find the system settings section.
In the settings menu, find the item Network and Internet or ConnectionsHere, you should make sure the Wi-Fi switch is enabled. If the TV is connected via an Ethernet cable, the wireless module must still be enabled for features like Wi-Fi Direct or Screen Mirroring to work.
⚠️ Please note: When connecting to public or guest Wi-Fi networks (such as those in hotels) using web page authorization, streaming functions may not work due to ports being blocked by your ISP.
To activate connection standby mode, you need to launch the appropriate application. Depending on the firmware, it may be called Wireless Display, Screen Mirroring, Multi-Screen or be built into the system via the signal source menu InputAfter launch, a message will appear on the screen stating that the device is ready to connect and is visible to other gadgets.
☑️ Preparing your DEXP TV
Some models require manual permission for external connections. Go to Settings → Apps → All apps, find the system application DCAST or Miracast and check permissions. Make sure local network access and device discovery are allowed.
Connecting an Android smartphone via Miracast
Android devices offer a native screen mirroring feature, which is called differently in different operating systems. On stock Android (Pixel, Nokia) and TVs DEXP With Android TV, this process is incredibly simple. Open the Quick Settings panel by swiping down from the top and find the button Broadcast or Cast.
Once pressed, the system will begin searching for available displays. Your TV should appear in the list. DEXPClick on it, and in a few seconds the image from your smartphone will appear on the big screen. If the button is missing, go to Settings → Connected devices → Broadcast and activate the search.
Samsung smartphone owners use the technology Smart ViewAfter launching the application and selecting the TV DEXP You may be asked to confirm the connection on the TV screen (a pop-up window will appear with a code or permission request). Xiaomi uses the feature Mi Drop or Projection in the notification curtain.
| Smartphone brand | Function name | Menu location | Peculiarities |
|---|---|---|---|
| Samsung | Smart View | Notification shade | DeX support for PC mode |
| Xiaomi / Redmi | Broadcast / Cast | Settings → Connection | Requires Mi Video Cast to be enabled |
| Huawei / Honor | Projection | Notification shade | High connection stability |
| Google Pixel | Screencasting | Settings → Connected devices | Uses Chromecast built-in |
It's important to note that while connected, the smartphone screen may dim to save power, but the image on the TV will remain visible. To control playback, use the smartphone screen as a touchpad or connect a Bluetooth mouse. If the image quality is poor, try lowering the output resolution in your phone's settings.
Using DLNA protocol to view files
Protocol DLNA Ideal for watching large video files you've downloaded to your phone. Unlike mirroring, the phone doesn't broadcast the entire screen, but only sends the video file's data stream. This allows you to use your smartphone simultaneously for other tasks, such as messaging.
To implement this method, a media server must be installed on the smartphone. Applications such as VLC for Android, BubbleUPnP or a standard gallery server with DLNA functionality. On the TV side DEXP you need to launch the built-in media player or application Media.
The algorithm of actions is simple: open the video file on your phone through the player, press the button Cast (screen icon with waves) and select your TV from the list. The TV will begin buffering and playing the file. Picture quality in this case depends solely on the source file and the Wi-Fi connection speed.
⚠️ Note: The video file format must be supported by your TV's codecs. If the video doesn't play, try casting the entire screen via Miracast instead of DLNA.
The advantage of DLNA is the ability to control playback (pause, rewind) directly from your phone. Furthermore, this method consumes significantly less power, since the smartphone's processor doesn't encode the video stream in real time, but only transmits pre-processed data packets.
Streaming via Google Home and Chromecast
If your TV DEXP Powered by Android TV, it has Chromecast technology built in. It's the most convenient way to stream content from YouTube, Netflix, IVI, Okko, and other apps. No need to mirror your screen; just tap the corresponding icon within the app.
To configure and manage the device, it is recommended to install the official application Google Home to your smartphone. It allows you to set up your TV as a new device, update its firmware, and manage media. After the initial setup, the casting icon will appear automatically in all compatible apps.
What should I do if the broadcast button doesn't appear?
Make sure your phone and TV are connected to the same Wi-Fi network (same SSID). Check if "AP Isolation" mode is enabled on your router, which prevents devices from seeing each other. Also, update the Google Home app to the latest version.
The main advantage of Chromecast is the ability to use your phone as a remote control. You can search for a movie, read comments, or even make a call, without interrupting the video on your TV. Furthermore, streaming quality is often higher than with Miracast, since the TV receives the stream directly from the internet, bypassing the phone.
In some cases, you may be required to link your Google account. Follow the on-screen instructions on your TV to enter the verification code. This is necessary to sync your subscriptions and viewing history across devices.
Troubleshooting and connection diagnostics
Despite the simplicity of the technology, users may encounter connection issues. The most common cause is a dropped connection or poor image quality (jitters, artifacts). This is often due to Wi-Fi congestion or a weak router signal.
Try rebooting your router, TV, and smartphone. This often helps clear network stack errors and renew IP addresses. Also, check if your router has any speed limits or parental controls enabled for specific devices.
- 🔄 Restart your router and all connected devices to clear the network cache.
- 📡 Move closer to the router to eliminate interference and walls.
- 🔒 Check your smartphone's antivirus or firewall settings, as they may be blocking your local network.
- 📺 Reset the network settings on your TV in the menu
Settings → Network → Reset network settings.
If you see a picture but no sound, check your Android audio output settings. Sometimes the system defaults to the phone's speaker. Also, make sure the audio codec format in the video file is supported by your TV (for example, AC3 or DTS may require licensing).
Why doesn't the DEXP TV detect the phone?
Most often, the problem is that the devices are connected to different networks (for example, one to a guest network and the other to the main network) or that access point isolation is enabled on the router. Also, make sure that the signal-receiving app (Screen Mirroring) is running on the TV, and not just Wi-Fi enabled.
How to reduce image lag when gaming?
Miracast isn't ideal for gaming due to input lag. Try enabling "Game Mode" in your TV's picture settings, if available. Best results are achieved using the 5 GHz band and a clear line of sight to the router. For serious gaming, a wired HDMI connection is recommended.
Is it possible to connect an iPhone to a DEXP TV?
Yes, but native AirPlay doesn't work on all DEXP models. If your TV doesn't support AirPlay 2, use third-party apps from the TV's app store, such as "AirScreen" or "Receiver for AirPlay," which emulate signal reception from Apple devices.
Does phone connection affect internet speed?
When using DLNA or Chromecast (streaming from the internet), bandwidth usage is minimal. However, when mirroring your screen (Miracast), your phone actively uses Wi-Fi to transmit the video stream, which may temporarily slow down the loading speed of other apps on your smartphone, but won't necessarily affect other devices on the network.