Abstract: A method and apparatus to monitor quality of service (QoS) of wireless mobile devices is described. In one embodiment, the present invention provides a method to monitor QoS performance of one or more services provided to a mobile user. The method includes comparing the performance of at least one service provided to the mobile user against at least one QoS threshold value. In one aspect, the present invention detects and determines responses to services having performance levels that cross at least one associated QoS threshold value. In one aspect, QoS thresholds may be associated with QoS between a mobile device and network. In another aspect, QoS thresholds may be associated with the performance level of mobile device operation services such as hardware and software operations. In one embodiment, when a performance level of a service associated with a mobile device crosses at least one QoS threshold, the affected mobile device process data associated with such service performance.