How to connect Xiaomi phone to DEXP TV: the complete guide

Modern multimedia capabilities allow you to turn a regular TV into a full-fledged entertainment center, using a smartphone as the main source of content. Owners of the Xiaomi and DEXP bundle often face the need to bring the image to the big screen, whether it is watching photos, presentations or streaming video. The setup process can seem difficult due to differences in operating systems and interfaces, but the algorithm of actions is quite unified and understandable even for a beginner.

There are several proven ways to do this, from wireless signaling to physical cables, and the choice of a particular method depends on the TV model, the presence of a Smart TV in your DEXP device, and the version of Android on your smartphone. In this article, we will take a look at all the options available, paying attention to the nuances that are often overlooked during the initial setup.

Properly configuring your local network is the foundation for successful wireless synchronization. If you plan to use Wi-Fi, make sure both devices are on the same subnet, as the router can create isolated guest zones that block devices from being discovered by each other. This is the most common reason why the phone doesn't see the TV, even if all settings seem correct.

Preparation of equipment and network

Before you start the active setup phase, you need to perform a series of preparatory steps to ensure the stability of the connection. First, check whether both devices — Xiaomi smartphone and DEXP TV — are connected to the same Wi-Fi network. Often users mistakenly connect the phone to the 4G/5G mobile Internet and the TV to the home router, making wireless data transfer impossible.

Pay attention to signal frequency: modern routers operate in the 2.4 GHz and 5 GHz bands. 5 GHz is recommended for high-resolution heavy video content, as this range provides higher bandwidth and is less susceptible to interference from neighboring networks. However, if your DEXP TV is an older model, it can only support 2.4 GHz, in which case switch the smartphone to this frequency for compatibility.

⚠️ Note: If your router has a Guest Network feature, don’t connect your broadcast devices to it. This feature isolates your devices from each other for security reasons, and your phone simply won’t be able to find the TV on the LAN.

It’s also worth updating the software on both devices to the current versions. Xiaomi smartphones with the MIUI shell or the new HyperOS often feature improvements to media transfer protocols that fix compatibility errors. Updates take only a couple of minutes to check, but can save you from hours of searching for the causes of unstable work.

Wireless connection via built-in broadcast function

The quickest and most convenient way to display an image is to use the Translation feature built into the MIUI or HyperOS shell, which is based on Miracast technology, which allows you to transmit video and sound directly, without the need for third-party applications or a router (in Wi-Fi Direct mode).

If there is no icon in the curtain, go to Settings → Connection and Sharing → Broadcast. In this menu, you need to activate the function and wait for the system to scan the available devices. The DEXP TV should start the appropriate signal reception module at this time. Depending on the year of release and the firmware version, it can be called “Wireless Display”, “Miracast”, “Screen Share” or “Screen Translation”.

When you see a TV in the list on your smartphone screen, click on the name of the TV. The image from the phone will instantly appear on the big screen. It's important to understand that when you use this method, you mirror the screen: everything that happens on the phone's display is displayed on the TV, which means that incoming notifications, messages and time will be visible to all viewers.

To improve the stability of the connection, you can change the resolution of the broadcast image in the broadcast settings on your phone. If you notice a picture twitch or desynchronization of the sound, try reducing the quality to 720p. It is also worth turning off all image enhancement features on the TV, such as Motion Plus or Noise Reduction, as they can create additional delay in signal processing.

Using the Google Home app for DEXP with Android TV

Many modern DEXP TVs run on Android TV. This opens up access to Google’s ecosystem, including native support for Chromecast built-in technology. Unlike Miracast, which simply copies the screen, Google Home allows you to stream content from apps directly using the TV’s Internet channel, which saves your phone’s battery power and reduces the workload on the processor.

To get started, make sure your smartphone has a Google Home app installed. If it's not available, download it from the Google Play Market. Once installed, launch the app and log in to your Google account. The system will automatically start searching for devices on the local network. When your DEXP TV appears on the list, click on it to pair.

⚠️ Note: When using Google Home to mirror the entire screen (the "Translate screen" function), the sound can be transmitted with a delay. To view the video, it is better to use the "Translate" button within the applications themselves (YouTube, Netflix, Kinopoisk), rather than the screen duplication function.

Google Home has a multimedia management feature, you can use your phone as a remote control, adjust volume, pause videos, or change tracks, and Google Assistant integration allows you to control your TV with your voice if you set up the appropriate scenarios in your smart home.

If the TV doesn’t appear in the device list, try restarting the Google Home app or clearing its cache through Settings. → Annexes → All applications → Google Home → Memory. → Clear the cache. Also make sure that the TV is enabled geolocation services, as in Android this requirement is necessary to find devices on the local network.

Broadcasting through third-party applications and DLNA

In situations where built-in methods do not work or the functionality of the DEXP TV is limited (for example, there is an outdated operating system or none at all), third-party solutions based on the DLNA protocol come to the rescue. This standard allows you to transfer media files (photos, videos, music) over the local network, to this end, a media application is installed on the phone, and a client is on the TV, or a built-in player is used.

One of the most popular and functional applications for Xiaomi smartphones is Web Video Caster or BubbleUPnP. Once you install the application, run a network scan. The program will find your DEXP TV and suggest connecting. The feature of such applications is that they can stream video directly from the browser or file managers, converting the stream on the fly to a format that the TV understands.

For TV owners DEXP smart TV An excellent solution will be the installation of an application on a smartphone that creates a virtual one. DLNA-server, and connect to it through the built-in media player of the TV, if it supports work with network storage (NAS). In the TV menu, select the signal source Network or DLNA, And you'll see your phone folders.

Another option is to use customized applications from the manufacturer. Although DEXP does not have its own unique management application, many models support protocols that are compatible with the TV Cast for DEXP application or universal remotes, such programs often have more flexible bitrate and codec settings, allowing you to watch high-resolution video without buffering.

Wired connection via HDMI and adapters

When wireless connectivity is not possible due to poor Wi-Fi signal or you need to transfer the image in maximum quality without compression, the only right solution is cable connection. For Xiaomi smartphones with a USB Type-C port, you need a special adapter (adapter) on HDMI. It is important to know that not all phone models support image output via USB, as the port must support the MHL or DisplayPort Alt Mode standard.

The connection process is as simple as possible: one end HDMI-cable is inserted into the TV DEXP, Another one is an adapter that connects to the charging port of the smartphone, and then you have to select the appropriate signal source on the TV by pressing the Input or Source button on the remote and selecting the desired port, for example, HDMI 1. The image must appear automatically.

If the cable doesn't show up, check the specifications of your smartphone. Redmi and Poco budget models often have a USB 2.0 port that can't transmit video, and then the wired method won't work, and you'll have to use wireless alternatives or purchase special docking stations that support DisplayLink that use software compression.

Customizing the sound and troubleshooting problems

A common problem when connecting a Xiaomi phone to a DEXP TV is the lack of sound or its desynchronization with video. By default, when you start the broadcast, the audio stream should switch to the external speakers of the TV. If this does not happen, check the audio output settings in the broadcast menu or in the media control panel.

In some cases, especially when using an AAC or Dolby Digital codec, the TV may not recognize the audio stream. The solution may be to change the settings in the Settings → Settings → Sound and Vibration → Output (the path may vary depending on the version of MIUI). Also try to change the sound format in the settings of the DEXP TV itself by switching the digital output from Auto to PCM.

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If the sound is late, try the Development Options settings to find the Bluetooth Audio Codec and switch it to SBC or AAC, which sometimes helps synchronize streams when wirelessly connected.

If the image twitches or has a low resolution, the problem lies in an overloaded Wi-Fi channel. Try to turn off other devices consuming traffic or move the router closer to the viewing area. For wired connection, use high-quality HDMI cables version 2.0 and higher, especially if you plan to watch content in 4K.

If the phone sees the TV but constantly resets the connection, try to statically ask IP-Addresses for both devices in router settings (DHCP) Sometimes it leads to conflicts when the router assigns a new address to the device and the connection between the phone and the TV is broken.

FAQ: Frequently Asked Questions