Transmission and reception of display information that configures a screen with multiple screen elements

摘要

A cellular phone does not store information unnecessary for displaying a screen and transmits a screen display request including an identifier of a screen to be displayed next to a server apparatus. In response to the screen display request, the server apparatus reads a display information file including screen elements for configuring the screen from a database and sends the file to the cellular phone. The cellular phone generates a screen using the screen elements included in the display information file and displays the generated screen on a display device. The display information file is prepared as one file for each screen displayed on the cellular phone. The file includes information of all screen elements necessary for the screen and does not include information of any screen elements unnecessary for the screen.