Method for sharing the consumption of an electronic communication service by a mobile terminal (UT1) attached to a mobile network, a session (US1) for consuming said service being established initially between the terminal and a gateway (PGW1) between the mobile network and a packet-switched network, a remaining credit for consuming said service being assigned initially to the terminal, the terminal periodically requesting authorization to consume a predetermined quota of the remaining credit, the method comprising the following steps: • reception (E722) of a credit request message from the gateway, relating to the terminal, the message containing information relating to a part of the predetermined quota consumed by the terminal, • transmission (E723) of a credit answer message to the gateway, relating to the terminal, containing an authorization for the terminal to consume the predetermined credit quota, • update (E724) of the remaining credit according to the information, the method being such that the step (E723) for transmitting a credit answer message relating to the terminal is deferred until the following steps are carried out, in which the terminal is associated with at least one other terminal (UT2, UT3) that has its own remaining credit, another session for consuming the service having been established with the other terminal: • detection (E730) of a remaining credit less than the predetermined quota, • transmission (E732, E752) of a message intended to trigger a credit request relating to the at least one other terminal, • reception (E734, E754) of a credit request message relating to the at least one other terminal, the message containing information relating to a part of another predetermined remaining credit quota consumed by the at least one other terminal, • update (E760) of the remaining credit for the at least one other terminal according to the information, and, if the remaining credit for the at least one other terminal is greater than or equal to a predetermined threshold: • sharing (E760) of the remaining credit for the at least one other terminal, between the terminal and the at least one other terminal. • reception (E722) of a credit request message from the gateway, relating to the terminal, the message containing information relating to a part of the predetermined quota consumed by the terminal, • transmission (E723) of a credit answer message to the gateway, relating to the terminal, containing an authorization for the terminal to consume the predetermined credit quota, • update (E724) of the remaining credit according to the information, • detection (E730) of a remaining credit less than the predetermined quota, • transmission (E732, E752) of a message intended to trigger a credit request relating to the at least one other terminal, • reception (E734, E754) of a credit request message relating to the at least one other terminal, the message containing information relating to a part of another predetermined remaining credit quota consumed by the at least one other terminal, • update (E760) of the remaining credit for the at least one other terminal according to the information, and, if the remaining credit for the at least one other terminal is greater than or equal to a predetermined threshold: • sharing (E760) of the remaining credit for the at least one other terminal, between the terminal and the at least one other terminal. • sharing (E760) of the remaining credit for the at least one other terminal, between the terminal and the at least one other terminal. <EOS>