Herein disclosed are a portable information terminal and a communication system according to the present invention. The portable information terminal comprises an information providing unit 109 for providing information in accordance with a providing method which the information providing unit 109 is set to, a providing pattern data storage unit 104 for storing therein pattern data associating each of the providing methods with a location and a moving speed, a sensor unit 102 for detecting a current location and a moving speed, and a providing method control unit 106 for obtaining the providing method associated with the current location and the moving speed from the providing pattern data storage unit 104 and controlling an output port 108 to change the providing method previously set to the information providing unit 109 to have the information provided in accordance with the providing method indicated by the obtained pattern data.