1. A communication device comprising: a microphone; a speaker; an input device; a display; an antenna; a voice communicating implementer, wherein voice communication is implemented with another device in a wireless fashion; a payment monetary value data transmitting implementer, wherein a payment monetary value data is transmitted in a wireless fashion, wherein said payment monetary value data indicates a certain amount of monetary value in a certain currency; a remaining monetary value data updating implementer, wherein a remaining monetary value data is updated by subtracting said payment monetary value data therefrom, wherein said remaining monetary value data is the total amount of monetary value in said certain currency; an automated supplementary monetary value data adding implementer, wherein said remaining monetary value data is compared with a certain criterion and when said remaining monetary value data is determined to be below said certain criterion, said communication device automatically receives a supplementary monetary value data in a wireless fashion and updates said remaining monetary value data by adding said supplementary monetary value data thereto; and a simultaneous implementation implementer, wherein said voice communicating implementer and one of said payment monetary value data transmitting implementer, said remaining monetary value data updating implementer, and said automated supplementary monetary value data adding implementer are implemented simultaneously, thereby said payment monetary value data is transmitted in a wireless fashion, said remaining monetary value data is updated by subtracting said payment monetary value data therefrom, or said communication device automatically receives said supplementary monetary value data in a wireless fashion while said voice communication is implemented.