A method of managing transmission power of a communication device, comprising: detecting motion of the communication device using a motion sensor; classifying detected motion according to one or more motion classification conditions using one or more motion classification parameters, wherein the one or more motion classification conditions classify whether the detected motion indicates a SAR IN MOTION state that represents user interaction with the communication device or a SAR STATIONARY state that indicates a user is not engaged with the communication device; adjusting the one or more motion classification parameters applied to the classifying operation, responsive to the classifying operation, wherein the operation of adjusting the one or more motion classification parameters comprises adjusting a sensitivity to the detected motion by: increasing the sensitivity to the detected motion when the classifying of the detected motion classifies the detected motion as indicative of the SAR IN MOTION state; and decreasing the sensitivity to the detected motion when the classifying of the detected motion classifies the detected motion as indicative of the SAR STATIONARY state; classifying the detected motion according to the one or more motion classification conditions using the one or more adjusted motion classification parameters; and adjusting the transmission power of the communication device based at least in part on the one or more motion classification conditions and the one or more adjusted motion classification parameters, responsive to the operation of classifying using the one or more adjusted motion classification parameters. detecting motion of the communication device using a motion sensor; classifying detected motion according to one or more motion classification conditions using one or more motion classification parameters, wherein the one or more motion classification conditions classify whether the detected motion indicates a SAR IN MOTION state that represents user interaction with the communication device or a SAR STATIONARY state that indicates a user is not engaged with the communication device; adjusting the one or more motion classification parameters applied to the classifying operation, responsive to the classifying operation, wherein the operation of adjusting the one or more motion classification parameters comprises adjusting a sensitivity to the detected motion by: increasing the sensitivity to the detected motion when the classifying of the detected motion classifies the detected motion as indicative of the SAR IN MOTION state; and decreasing the sensitivity to the detected motion when the classifying of the detected motion classifies the detected motion as indicative of the SAR STATIONARY state; increasing the sensitivity to the detected motion when the classifying of the detected motion classifies the detected motion as indicative of the SAR IN MOTION state; and decreasing the sensitivity to the detected motion when the classifying of the detected motion classifies the detected motion as indicative of the SAR STATIONARY state; classifying the detected motion according to the one or more motion classification conditions using the one or more adjusted motion classification parameters; and adjusting the transmission power of the communication device based at least in part on the one or more motion classification conditions and the one or more adjusted motion classification parameters, responsive to the operation of classifying using the one or more adjusted motion classification parameters.