Patent ID: 7392297

Claim:
A portable message processing device distinct from devices used by a user for reading/writing messages, and which can be connected to different networks at different times based on a location of the user who is carrying the portable message processing device, comprising: a recognition unit configured to recognize a particular network to which the portable message processing device is currently connected by the user; a determination unit configured to determine communication methods for accessing a plurality of message servers distributed on a plurality of networks; a memory configured to store messages in the portable message processing device; a message collection unit configured to collect messages addressed to the user from the message servers on behalf of the devices used for reading/writing messages, using the communication methods determined by the determination unit, and to store the messages into the memory; and a message transmission unit configured to transmit the messages stored in the memory, in response to a request for viewing the messages from another device connected to the particular network by the user; wherein the another device is one of the devices used for reading/writing messages.