A method implemented in a communication network associated with a plurality of mobile devices, comprising: receiving, via a mobile service provider portion of the communication network, mood data and mode data (302; 416) from one or more of the plurality of mobile devices, wherein: the mood data quantifies a frustration parameter based at least in part on interaction of a user with a user interface mode portion of a user interface of an individual mobile device, and the mood data associated with the user interface mode comprises a composite value based at least in part on a plurality of measurements of the frustration parameter, wherein the frustration parameter is associated with a time interval during which the user was in the associated user interface mode; identifying (304; 424), via the mobile service provider, one or more user interface modes that are frustrating based at least in part on the mood data and the mode data; and transferring (306; 426), via the mobile service provider, at least a portion of an updated user interface to one or more of the plurality of mobile devices based at least in part on the identification of the one or more user interface modes that are frustrating wherein mode data (302; 416) is data regarding an operation mode of the device, wherein the user interface mode is a mode a mobile device can be in for certain operations, and wherein the user interface mode portion serves for a user to interact with the device for a certain operation. receiving, via a mobile service provider portion of the communication network, mood data and mode data (302; 416) from one or more of the plurality of mobile devices, wherein: the mood data quantifies a frustration parameter based at least in part on interaction of a user with a user interface mode portion of a user interface of an individual mobile device, and the mood data associated with the user interface mode comprises a composite value based at least in part on a plurality of measurements of the frustration parameter, wherein the frustration parameter is associated with a time interval during which the user was in the associated user interface mode; the mood data quantifies a frustration parameter based at least in part on interaction of a user with a user interface mode portion of a user interface of an individual mobile device, and the mood data associated with the user interface mode comprises a composite value based at least in part on a plurality of measurements of the frustration parameter, wherein the frustration parameter is associated with a time interval during which the user was in the associated user interface mode; identifying (304; 424), via the mobile service provider, one or more user interface modes that are frustrating based at least in part on the mood data and the mode data; and transferring (306; 426), via the mobile service provider, at least a portion of an updated user interface to one or more of the plurality of mobile devices based at least in part on the identification of the one or more user interface modes that are frustrating wherein mode data (302; 416) is data regarding an operation mode of the device, wherein the user interface mode is a mode a mobile device can be in for certain operations, and wherein the user interface mode portion serves for a user to interact with the device for a certain operation.