Modern media content demands flexibility, and wired connections often become an inconvenient relic of the past. Connecting your smartphone to a large screen without unnecessary cables is not only convenient but also essential for comfortable video viewing or gaming. Tech owners DEXP often face the issue of integrating their mobile devices with a TV, and the solution lies in the capabilities of a wireless network.
The process of synchronization of devices is based on standard data transfer protocols, such as Miracast or DLNAThese technologies are built into the Android operating system and are supported by the Smart TV platforms of most TVs, including Russian-brand models. You don't need to be an IT specialist to establish a stable connection; simply follow a logical sequence of steps.
The main requirement for successful setup is a unified local network. Both devices must be able to "see" each other, which is only possible with the correct router and TV settings. In this article, we'll cover all connection steps in detail, including possible errors and troubleshooting steps, so you can enjoy content on the big screen without lag.
Wireless image transmission technologies: Miracast and DLNA
Before you begin setting up, it's important to understand the differences between the main broadcast protocols. Miracast Allows you to mirror your smartphone's screen to your TV in real time. This means everything that happens on your phone's display is instantly reflected on the larger panel. This technology is ideal for showing presentations, gallery photos, or games.
Unlike mirroring, the protocol DLNA It works differently. It doesn't broadcast the screen image, but rather transfers media files (video, music, photos) directly from the phone's memory to the TV's decoder. This frees the smartphone from active workload, allowing it to be used for other tasks or even turn off the screen during playback.
⚠️ Please note: The Miracast protocol creates a direct WiFi Direct connection, which may temporarily reduce the internet speed on the connected phone, as the WiFi module switches to access point or direct connection mode.
Televisions DEXPAndroid TV-based devices or other smart systems typically support both standards. The choice of method depends on your end goal: if you need to display an app interface, choose mirroring; if you're just watching a movie, use DLNA for better quality and stability.
Preparing equipment and setting up a local network
The foundation of a successful connection is a properly functioning home WiFi network. Make sure your router is turned on and broadcasting a signal on the 2.4 GHz or 5 GHz frequency. For high-resolution video (4K or Full HD), it's recommended to use the 2.4 GHz or 5 GHz band. 5 GHz, as it provides higher throughput and is less susceptible to interference from neighboring networks.
Both devices - a smartphone and a TV DEXP — must be connected to the same network. Users often make the mistake of connecting their phone to a guest network or mobile data while the TV is connected via cable or another Wi-Fi hotspot. Check the network name (SSID) in the settings of both devices; they must match exactly.
☑️ Check before connection
It's also worth paying attention to your router's security settings. If you have "AP Isolation" enabled, devices won't be able to find each other on the network. This option must be disabled in the router's control panel to allow data exchange between devices within the local network.
Using the built-in Cast feature on Android
Most modern Android smartphones have wireless display functionality built into the system and don't require any additional software. To start the process, look for the icon in the notification shade (top menu) labeled Broadcast, Smart View, Cast or Screen mirroringThe name may differ depending on the brand of your phone (Samsung, Xiaomi, Honor etc.).
Once the feature is activated, the phone will begin searching for available devices. On the TV screen DEXP You may be asked to confirm the connection. You need to select your TV from the list on your smartphone and click "Connect." You may also need to press the button on your TV remote. Input or Source and select the signal source Wireless Display or Miracast.
⚠️ Note: If your TV doesn't appear in the list of available devices, make sure the signal receiving app is running on the TV itself. On some DEXP models, it's called "Miracast," "Wireless Display," or it's located in the app menu.
Image quality depends on the strength of your WiFi signal. If you notice artifacts or audio lag, try moving closer to the router. You can also try changing the streaming resolution in your phone's settings, if available in the developer menu or display settings.
What should I do if searching for devices does not produce any results?
If the search takes a long time and doesn't find anything, try resetting the WiFi module on both devices. Turn WiFi off and on on your phone, and unplug the TV for 10 seconds (a full power reset), then turn it back on. Temporarily disabling mobile data (3G/4G) on your smartphone to force it to use only WiFi for searching also helps.
Broadcast via YouTube app and streaming services
The easiest and most popular way to cast video to the big screen is to use Chromecast's built-in feature in apps. If you're watching videos through the official client, YouTube, Netflix or IVIYou don't need to duplicate the entire screen. Just tap the rectangle icon with waves (broadcast) in the corner of the video player.
The phone will send to the TV DEXP Simply provide a link to the video stream, and the Smart TV will download and play the content automatically. This significantly saves your smartphone's battery and ensures the highest possible picture quality, as the TV uses its own internet connection directly.
For this feature to work, the TV must have the appropriate app (such as YouTube for TV) installed and authorized, although often simply being on the same network is sufficient. The app on your phone may display a code that you'll need to enter on the TV screen for pairing.
Transferring media files via DLNA and file managers
If you need to play a video file downloaded to your phone's memory and not available online, use the DLNA protocol. You can do this using your smartphone's built-in gallery or third-party file managers that support the feature. DLNA CastA popular solution is the app VLC for Android or LocalCast.
The algorithm of actions is simple: open the video file in the player, press the broadcast button (usually the screen icon or WiFi), select your TV DEXP from the list. The file will begin buffering and playing on the big screen, and your phone can be used as a remote control (pause, rewind, and adjust volume).
The advantage of this method is that the TV takes over video decoding. Even if your smartphone has a weak processor or a low screen resolution, the picture quality on the TV will still be high, matching the capabilities of the TV rather than the phone.
Comparison of connection methods and possible problems
Different connection methods have their pros and cons. Screen mirroring (Miracast) is versatile, but energy-intensive. DLNA is convenient for local files, but not suitable for gaming. Chromecast is ideal for streaming, but requires installing apps on the TV. For clarity, let's compare the main features:
| Method | Content type | Latency | Battery load |
|---|---|---|---|
| Miracast | Full screen, games, menu | High (noticeable in games) | Very high |
| DLNA | Videos, photos, music | Absent | Low |
| Chromecast | Online video (YouTube, etc.) | Minimum | Minimum |
| HDMI cable | Any content | Absent | Charging your phone |
A common issue is audio and video desynchronization. This can be resolved by restarting the app or refreshing the browser page. If the image is choppy, check to see if your WiFi channel is being overloaded by downloading files on other devices.
⚠️ Note: Smart system interfaces and menu names may vary depending on the firmware version of your DEXP TV. If you don't see the options described, please consult the official instructions for your specific model or contact the manufacturer's support team.
Frequently Asked Questions (FAQ)
Why doesn't the DEXP TV see my phone in the list of devices?
The most likely cause is that the devices are connected to different WiFi networks (for example, one to 2.4 GHz and one to 5 GHz, if the router assigns them different names). Also, check whether "Client Isolation" is enabled on the router and whether a signal-receiving app (Miracast/AirPlay) is running on the TV.
Is it possible to connect a phone to a DEXP TV without WiFi?
Without a WiFi module, wireless connection is impossible. However, you can use a USB-C to HDMI cable (if your phone supports video output) or connect your phone to the TV's USB port as a flash drive for file playback, but not for screen sharing.
The broadcast is delayed, can this be fixed?
Lag is inherent to Miracast technology. It can be reduced by moving devices closer to the router, disabling downloads on other devices, or switching the router to a less congested WiFi channel. For real-time gaming, a wired HDMI connection is best.
Does the broadcast work if the mobile Internet is enabled on the phone?
For Miracast and DLNA to work, devices must be on the same local WiFi network. Mobile internet (4G/5G) does not contribute to the local network between devices, so the WiFi module on your phone must be active and connected to the same network as the TV.