Modern brand TVs DEXP often function not just as screens for broadcasting, but as full-fledged multimedia centers based on the operating system Android TV. This opens up wide opportunities for users to integrate with other gadgets, in particular with smartphones. One of the most reliable and stable methods of data transfer or image duplication is a physical connection via USB interface. Unlike wireless protocols, a cable connection guarantees no delays or loss of signal quality, which is critical when watching heavy videos or presenting photos.
However, the pairing procedure is not always automatic and intuitive. Users often encounter a situation where the TV sees the drive, but does not display media files, or the smartphone is charging, but does not transfer data. In this material, we will analyze in detail the technical nuances of setting up the connection, possible operating modes of the ports and ways to solve typical compatibility problems between a mobile device and a TV DEXP.
Technical requirements and equipment preparation
Before proceeding with the physical connection of devices, you need to make sure that the hardware is compatible. The key element here is the cable itself. Not every wire that comes with your phone is suitable for data transmission. Many budget cables are designed solely for charging and do not have internal signal lines. You will need a high-quality standard cable USB 2.0 or USB 3.0 with working contacts.
It is also important to check the version of the operating system on the TV. Models DEXP may work on different builds Android, and the menu interface may differ slightly. Make sure both devices are turned on and in working order. If you plan to transfer large files, it is recommended to use ports marked USB 3.0 (usually blue), as they provide higher data transfer speeds compared to black ports USB 2.0.
⚠️ Attention: Using damaged or too long cables (more than 2 meters) may lead to an unstable connection or complete lack of response of devices. The length of the cable directly affects the quality of the signal.
Check the connectors on both devices for dust or oxidation. Dirt in the port Micro-USB or Type-C smartphone can prevent a tight contact, causing the phone to be detected only as a charging device. Carefully blow out the connectors with compressed air before connecting.
☑️ Checking readiness for connection
Physical connection and selection of operating mode
After preparing the equipment, connect the smartphone to the TV by inserting one end of the cable into the port DEXPand the other into phone connector. At this moment, a notification about connecting a new device may appear on the TV screen, or the smartphone may ask for permission to transfer data. By default, many phones switch to “Charge Only” mode, which makes files invisible to the external system.
To access the file system, you need to change the USB operating mode on your smartphone. Swipe down the notification shade on your phone and look for “USB Charging” or a similar notification. Click on it to expand the list of available options. To view photos and videos on TV through the built-in media player, it is optimal to select the MTP (Media Transfer Protocol)mode. This protocol allows the TV to see the internal memory of the phone as an external drive.
- 📱 MTP —the main mode for transferring media files, supported by most modern TVs.
- 📷 PTP —digital camera mode, used if MTP does not work or for specific software.
- 🔋 Charging only —default mode in which data transfer is blocked by the security system.
If you have selected the correct mode, but the TV still does not respond, try switching to the PTPmode. Sometimes TV drivers DEXP recognize the smartphone better in this mode, although the functionality may be limited only to viewing photos. After selecting the mode, wait a few seconds while the system indexes the connected device.
If the phone does not offer a choice of USB mode when connected, go to the “For Developers” settings and turn on the “Default USB Configuration” item, selecting MTP there.
Navigating through the DEXP TV file system
When the connection is established and the mode is selected, you must Find the connected device in the TV interface. Remote controls DEXP usually have a separate button INPUT or SOURCE. Press it to bring up the signal source selection menu. In the list of available inputs, you should see an item corresponding to the number of the port into which you connected the cable (for example, USB 1 or USB 2).
An alternative way to access files is through the built-in media player application. In the main menu, find the “Media” or “Gallery” section. When you launch the application, the system automatically scans the connected drives. Your smartphone should appear in the list of storage devices along with with the internal hard drive of the TV. The folder structure will mirror the file system of your Android smartphone.
| Content type | Recommended folder on the phone | Support for TV formats |
|---|---|---|
| Photos | DCIM/Camera or Pictures |
JPG, PNG, BMP |
| Video | DCIM or Download |
MP4, MKV, AVI |
| Music | Music |
MP3, FLAC, AAC |
| Documents | Documents |
PDF, TXT (depending on software) |
Please note that the TV may not see hidden folders or Android system directories. For comfortable viewing, create a separate folder in the root of the phone's memory, for example, TV_Share, and move the necessary files there. This will simplify navigation via the remote control, which is not always convenient for deep wandering through system directories.
Screen broadcast and advanced capabilities
A simple USB connection in storage mode only allows you to view files, but does not duplicate the smartphone screen in real time. For full image broadcast (screencasting) via cable, more complex settings are required. Standard protocol MHL (Mobile High-Definition Link) or Slimport Not supported by all phone and TV models DEXPIf your equipment does not support these standards in hardware, direct screen broadcast via cable is impossible without special adapters.
However, if both devices are on the same Wi-Fi network (even with USB connected for charging), you can use software methods. TV DEXP often has pre-installed applications for wireless transmission, such as AirScreen or a built-in function Miracast. Activate the “Wireless Display” function in the TV settings, and on your phone, launch “Broadcast” in the notification shade.
⚠️ Attention: Direct video transmission via a regular USB cable without support for the MHL/HDMI-Alt Mode standard is impossible. USB in MTP mode transfers only files, not the video stream from the screen.
For enthusiasts, there is a method of USB debugging using an intermediary computer or specialized software, but this requires installation ADB (Android Debug Bridge). This method allows you to control the TV from a smartphone or send commands, but it is difficult for the average user and requires turning on the debugging mode in the developer menu.
How to enable developer mode?
Go to Settings -> About device Find the “Build number” item and quickly click on it 7 times in a row. a new section “For Developers” will appear in the settings menu, where you can activate USB debugging.
Solving typical connection problems
Despite the simplicity of the procedure, users often encounter the fact that the TV DEXP does not see the phone. The most common reason is the incorrect file system format Android uses by default. data-i="107">or exFAT or FAT32, which TVs read perfectly. However, if the phone was formatted as an internal drive (Adoptable Storage) in ext4mode, the TV will not be able to read the data without root access and special software.
Another problem may be insufficient power if you connect the phone via a long cable or. USB hub, the TV port may not have enough current to initialize the connection. Try connecting the cable directly to the port on the back of the TV, avoiding extension cords. Also, make sure that the phone screen is unlocked at the time of connection, as many devices block access to data on the locked screen for security reasons.
- 🔄 Reboot both devices - this will clear temporary USB driver errors.
- 🔌 Try another USB port on the TV, preferably black (2.0).
- 📂 Check if the “Charge Only” mode is enabled in notifications on your phone.
If all else fails, check your date and time settings. System time desynchronization between the phone and the TV sometimes leads to failures in the handshake of communication protocols. Set automatic time detection in the settings of both devices.
90% of connection problems are solved by replacing the cable with a known good one or changing the USB mode from “Charging” to “File Transfer (MTP)”.
Safety and correct shutdown
It is important not to just pull the cable out connector after use. Although modern file systems are quite tolerant of sudden shutdowns, there is a risk of media file index corruption or data loss if recording or copying was in progress when the shutdown occurred. On TVs DEXP it is recommended to use the safe removal function.
Go to the source or media player settings on the TV and find the “Eject USB” or “Safely Remove” option. After confirming the operation, a message will appear on the TV screen indicating that the device can be turned off. Only then physically disconnect the cable. This is especially true if you used your phone as an external hard drive to watch heavy movies.
⚠️ Attention: Never disconnect the cable while playing videos or copying files. This may cause the TV's media player to freeze and require a complete reboot.
Check your TV's firmware updates regularly DEXP. Manufacturers often release patches that improve compatibility with new versions of Android and correct errors in the operation of USB controllers. The update can be performed through the settings menu in the “About the system” section when connected to the Internet.
To extend the life of the connectors, try not to leave the cable connected constantly unless necessary. Constant voltage on the contacts can accelerate their oxidation.
Why does the TV see the phone, but does not open folders?
Most likely, the “Charge Only” mode is selected on the phone. Swipe down the notification shade, tap the USB notification, and select File Transfer or MTP. Also check if the folders are password protected or if they are not system folders.
Is it possible to play games from a phone on the DEXP screen via USB?
You cannot run a game on the TV screen directly via a regular USB cable. This requires video signal transmission technologies (MHL/HDMI), which not all phones have. An alternative is to use built-in applications to cast the screen over Wi-Fi.
The TV says “Insufficient power” when connected.
The USB port on the TV produces a limited current (usually 0.5A or 1A). If the phone is low or consumes a lot of power, there will be no connection. Try connecting the phone to the outlet separately and to the TV only for data transfer, or use a cable with minimal resistance.
How to view photos from an iPhone on a DEXP TV via USB?
Connecting an iPhone directly via USB to an Android TV usually does not work for transferring files due to differences in file systems and protocols (MTP vs. PTP/iTunes). It is recommended to use AirPlay wireless broadcast (if the TV supports) or upload a photo to a flash drive.