An information terminal comprises display means for performing a large-screen display via a sculptured surface prism. The information terminal connects to a cellular telephone using Bluetooth technology, obtains information held by a WWW server on the Internet through cooperation with the cellular telephone, and displays a screen for viewing the obtained information on the display means. Also, button operations made at the cellular telephone can be taken as input of the information terminal for performing operations on the screen of the display means. Thus, a portable information terminal which enables viewing of information on a network with a large screen can be provided, without compromising portability or operability.