How To Control LED Display Using Mobile Phones

Now cell phones and iPads are more and more popular. Do you know how to use cell phones and iPads to control LED screen? what is the principle?

 In fact, the most important factor in the mobile phone and iPad control LED screen is to connect the devices, so does the phone and the iPad need a network cable to connect? The answer is no, just use WiFi to connect.

Using Mobile phones and iPads to control LED screen methods

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WiFi wireless control

  • Mobile end (mobile phone, IPAD) for the control side
  • the first implementation of remote wireless control screen
  • all its functions can be achieved by touch screen control
  • 0 seconds to switch
  • not Carrington.
  • Really discard the traditional keyboard, mouse, and software instead of hardware.

Working principle: 

Through the installation of wireless routers or other wireless equipment, with the user’s original wireless network bridge, build a wireless LAN, convenient to the network control card into the wireless network, wireless network control.


  • No wiring
  •  easy installation and debugging
  • fast data transmission.

Equipment required: 

  • Network bridge
  • wireless router (on the screen is best to choose the device to change the antenna, so that can effectively accept the wireless signal). 


  • Communication distance mainly looks at the amplification ability of the bridge
  • no line through the communication distance is relatively short
  •  the wall signal is weaker or no signal.
  • Suitable for short-distance wireless signal location.

If your display area has a wireless signal coverage, it is simpler, only the LED screen screen and LED screen control card connected to the wireless router bridge to your wireless network, you can in the intranet any computer control screen.

RF wireless control

Working principle: 

one end of the RF module receives the control computer, the other end receives the control card serial port, the computer-installed driver, the creation of a virtual serial port, and through this serial port to send data.

GPRS wireless control

Working principle:

GPRS module to complete the dial-up Internet after the process of connection to the data center server, customers through the client software to access the server, through the server for information forwarding.

4G full Netcom wireless control

Working principle:

3G/GPRS is basically the same.


  •  4G full-line (China Mobile, Unicom, Chinese Telecom)
  •  fast transmission rate
  •  full realization of real-time control
  • send command can immediately respond to the relevant control.

Mobile phone and iPad control of several functions of LED screen

wedding led screen

Image preview, visualization operation

With the iPad control screen, each function of the image, at a glance, will play mobile phone, iPad, will control the LED screen screens! Before switching, it is possible to preview the content of the upcoming broadcast, to the maximum extent to prevent misoperation, safe and reliable!

Brightness, volume One button arbitrary adjustment

According to the actual situation of the site, customers can at any time on the iPad a key remote control screen brightness (from the brightest to the black screen) and volume, simple and convenient. Most importantly, any operation will not affect the use of the current screen, do not exit the current playback!

Support list editing

Before use or in use, customers can at any time on the playback program for file classification, list sorting, file additions and deletions and pre-monitoring. You can set up a single first loop or list loop when playing video.

Painting, four-screen, nine-screen one-click switch

Single-screen playback mode and painting (up to four to support the image, the screen can be dragged and magnified small), four-screen, nine-screen, you can switch a button, 0 seconds delay not cotton; In multi-screen mode, double-click any screen to toggle full-screen and window (audio sync).

Support PPT, Word and other office file playback

The wireless control system supports normal playback of office files (including PPT animations), seamless switching between office files, and seamless switching (that is, the ability to support larger video files). A file can be placed in multiple windows, independent of each other, thereby monitoring the next screen, and security.

Can be synchronized editing subtitles, support synchronous, asynchronous video?

In the use of the process, the user can edit the character synchronously, a key can be recorded recording, supporting the synchronization of video and a video, recorded files can be exported.

Support multi-screen synchronization

This system can support the control of multiple screens. By switching, you can control the playback content of each display separately and can control multiple screens synchronously.

Other functions

  • Power to continue the broadcast: Even if the iPad shutdown, the screen will still play according to the original mode of playing a black screen;
  • External equipment: Support camera, DV, DVD player, notebook and other equipment signal direct connection, and can be synchronized pre-monitoring live screen, can be a key switch.

The mobile phone and the iPad combination scheme control LED screen (with the main control of the secret box +led video processor +wifi) combination scheme main control box can also be replaced with millet box, the following main control box for example:

Main features implemented

Through the mobile phone (Android, Apple) system to manipulate the LED screen to play the contents of the phone, the content includes regular pictures, videos and so on.

Required functional equipment:

  • Android/Apple system mobile phone;
  • The main control of the secret box;
  • Wireless Router One (need to connect to the Internet);
  • LED screen set;
  • LED video processors supporting HDMI or related HDMI conversion line (main control box is HDMI interface);

 Pre-control equipment needs to complete the connection and playback file preparation:

  •  LED screen and LED video processor normal connection and debugging completed;
  • The main control box of HDMI output is connected to the LED video processor and the appropriate settings;
  • Wireless router to open the wireless network, and the mobile phone, the main control secret box simultaneously connected to the same WiFi network;
  • The mobile phone after the system installs an appropriate version of the LED control system and through the set connected to the main control secret box. The LED screen must be played in advance back to the phone;

Specific operation methods:

  • Through the main control system to the mobile phone, sharing the computer video or photos by the way directly to the main control of the secret box, the main control box after receiving will directly play your own video, and image files;
  • You can also use the main control of the secret box to play a variety of Internet videos and so on.


We have briefly introduced how to control LED screens using mobile devices. When you invest in an LED screen, you need to consider some practical features, and it is best to reduce the initial cost of the LED screen.

As a top second-hand LED screen supplier, we can provide branded second-hand LED screens at the best prices. They are not only equipped with the above features, but also can reduce your budget. We have a large number of stock LED screens from Unilumin Technology, Absen, Gloshine Technology, etc. There is always one suitable for you. If you need, please feel free to contact us.