A method of modifying a configuration setting of a portable communication device based on an estimated change in transmission traffic. The method includes monitoring radio frequency (RF) signals at a first portable communication device. The RF signals include signals communicated by one or more other communication devices. The method further includes measuring a first number of transmissions communicated by the RF signals during a first time window and measuring a second number of transmissions communicated by the RF signals during a second time window. The first number of transmissions is compared to the second number of transmissions to estimate a change in transmission traffic. A configuration setting of the first portable communication device is modified from a first setting to a second setting based on the estimated change in transmission traffic.