Described herein is a method for changing active subscription data in an identification module for use in a mobile radio device that can be connected to a mobile radio network. After the activation of new subscription data, the identification module returns automatically to the activation of old subscription data that had already been activated before the change if at least one predefined event is not detected in the identification module after the activation of the new subscription data. Moreover, the present techniques relate to an identification module that is suitable for carrying out the method.