Paid instant message system and method for authenticating identities using a mobile telephone network

A paid instant message system that authenticates identities using a mobile telephone network, which is characterized in that said system comprises a message server (1), cell phones (2) of different users, mobile telephone networks (3) of cell phones (2) of different users, wherein, said message server (1) is communicatively connected to each mobile telephone network (3) and is provided with a server end software for instant messaging, so that the cell phone (2) of each user accesses the message server (1) through the mobile telephone network (3) to perform instant messaging;

• the message server (1) includes a user account of each user, each user account is associated with an identity by which the cell phone (2) of said user accesses the mobile telephone network (3);
• a instant messaging application is installed in the cell phone (2) of the user, and the cell phone (2) accesses the message server (1) through said instant messaging application via the mobile telephone network (3) to perform instant messaging with cell phones (2) of other users, and each user account includes a specified charge, when a user uses the instant messaging application of the cell phone (2) to transmit message to other cell phones (2) through the message server (1), he needs to pay the user of the cell phone (2) receiving the message the fee specified by the charge in the user account of the receiver.