A push-button trigger manager for U/SIM Toolkit applications of a U/SIM card from a mobile terminal is provided which includes, a connection to a storage area associated to the trigger manager in order to register predetermined data related to, at least, one U/SIM Toolkit application loaded on the U/SIM card, being these predetermined data, at least, one identity of such application; manager activation to activate the trigger manager as a response to pushing a sequence of buttons and the call button in the mobile terminal, a display on the mobile terminal screen having a list of options corresponding to the U/SIM Toolkit application(s) registered in the sequence of buttons pushed by the user, and a trigger for the U/SIM Toolkit application selected by the user from the list of options.