Abstract: A cell phone 1 is characterized by having a problem determination storage 3 for storing problem finding information for determining whether there is a problem in received data received by a radio communicator 2, in correspondence to a fixed message, and for storing an arbitrary message available for arbitrary correspondence to the problem finding information; an arbitrary message determination processor 5 for determining whether an arbitrary message is stored in correspondence to the problem finding information in the problem determination storage 3, when it is determined that there is a problem in the received data; and an operation controller 6 for displaying the arbitrary message when the arbitrary message determination processor 5 determines that the arbitrary message is stored, and for displaying the fixed message stored in the problem determination storage 3, when it is determined that no arbitrary message is stored.

Abstract: A gateway server 40, in the case that discontinuation of TCP Connection A between a portable phone 10 and gateway server 40 is detected when gateway server 40 is relaying HTTP communication between portable phone 10 and a content server 70, maintains TCP Connection B1 between a billing management server 50 and gateway server 40 until gateway server 40 receives from billing management server 50 billing information for HTTP communication relayed up to the time of the discontinuation of TCP Connection A.

Abstract: A cell phone 1 is characterized by having a problem determination storage 3 for storing problem finding information for determining whether there is a problem in received data received by a radio communicator 2, in correspondence to a fixed message, and for storing an arbitrary message available for arbitrary correspondence to the problem finding information; an arbitrary message determination processor 5 for determining whether an arbitrary message is stored in correspondence to the problem finding information in the problem determination storage 3, when it is determined that there is a problem in the received data; and an operation controller 6 for displaying the arbitrary message when the arbitrary message determination processor 5 determines that the arbitrary message is stored, and for displaying the fixed message stored in the problem determination storage 3, when it is determined that no arbitrary message is stored.

Abstract: A gateway server 40, in the case that discontinuation of TCP Connection A between a portable phone 10 and gateway server 40 is detected when gateway server 40 is relaying HTTP communication between portable phone 10 and a content server 70, maintains TCP Connection B1 between a billing management server 50 and gateway server 40 until gateway server 40 receives from billing management server 50 billing information for HTTP communication relayed up to the time of the discontinuation of TCP Connection A.

Abstract: A mobile station MS accesses a home page of an IP server W and receives HTML data. The mobile station MS then extracts URLs, telephone numbers, and/or electronic mail addresses marked by anchor tags in the obtained HTML data and stores them with titles in the flash memory of the mobile station MS.

Abstract: To provide an application control system and application control method that ensure security when exercising operation control of application software from a service-providing server and prevent waste of communication resources even when control is exercised frequently. The application control system comprises a request-receiving part that receives request information that is transmitted from a service-providing server, which provides application software stored by the storage part of a mobile terminal, and that requests the operation control of application software; a request-judging part that judges whether or not receipt of the request information satisfies a specified condition; and a command-transmitting part that, only in the case that receipt of the request information satisfies the specified condition, transmits to the mobile terminal a command that controls the application software.

Abstract: A gateway server 40, in the case that discontinuation of TCP Connection A between a portable phone 10 and gateway server 40 is detected when gateway server 40 is relaying HTTP communication between portable phone 10 and a content server 70, maintains TCP Connection B1 between a billing management server 50 and gateway server 40 until gateway server 40 receives from billing management server 50 billing information for HTTP communication relayed up to the time of the discontinuation of TCP Connection A.

Abstract: Mobile station MS accesses a home page of IP server W and receives corresponding HTML data. Next, Mobile station MS extracts a URL, telephone number, or electronic mail address designated by an anchor tag in the obtained HTML data and stores them with a title in the flash memory of mobile station MS.