A portable electronic device comprising: a display; a memory within which applications are stored; a control unit, operatively coupled to the memory, and configured to: execute the applications; monitor automatic wakeup events that occur during a power save mode in which the display is turned off for respective ones of the applications within the portable electronic device; based on the monitored automatic wakeup events, present via the display a list in which the respective applications are ranked according to their processing activity due to their respective automatic wakeup events while the portable electronic device is in the power save mode, wherein an application among the respective applications having a highest processing activity is ranked at the top of the list and a selectable icon is displayed for each of the respective applications; in response to a user selection of one of the selectable icons, present via the display a menu including a menu option for permitting a user to block automatic wakeup events for the application corresponding to the selected icon while the portable electronic device is in the power save mode; and in response to a selection of the menu option, block automatic wakeup events for the corresponding application after the portable electronic device enters the power save mode. a display; a memory within which applications are stored; a control unit, operatively coupled to the memory, and configured to: execute the applications; monitor automatic wakeup events that occur during a power save mode in which the display is turned off for respective ones of the applications within the portable electronic device; based on the monitored automatic wakeup events, present via the display a list in which the respective applications are ranked according to their processing activity due to their respective automatic wakeup events while the portable electronic device is in the power save mode, wherein an application among the respective applications having a highest processing activity is ranked at the top of the list and a selectable icon is displayed for each of the respective applications; in response to a user selection of one of the selectable icons, present via the display a menu including a menu option for permitting a user to block automatic wakeup events for the application corresponding to the selected icon while the portable electronic device is in the power save mode; and in response to a selection of the menu option, block automatic wakeup events for the corresponding application after the portable electronic device enters the power save mode. execute the applications; monitor automatic wakeup events that occur during a power save mode in which the display is turned off for respective ones of the applications within the portable electronic device; based on the monitored automatic wakeup events, present via the display a list in which the respective applications are ranked according to their processing activity due to their respective automatic wakeup events while the portable electronic device is in the power save mode, wherein an application among the respective applications having a highest processing activity is ranked at the top of the list and a selectable icon is displayed for each of the respective applications; in response to a user selection of one of the selectable icons, present via the display a menu including a menu option for permitting a user to block automatic wakeup events for the application corresponding to the selected icon while the portable electronic device is in the power save mode; and in response to a selection of the menu option, block automatic wakeup events for the corresponding application after the portable electronic device enters the power save mode.