A method comprising configuring and installing a service processor in a wireless communications device that is capable of accessing one or more data services over a first wireless network and over a second wireless network. The service processor, which comprises one or more device agents, at least one of the one or more device agents comprising software or firmware, at least assists in implementing at least a first service policy and a second service policy by: detecting that the wireless communications device is connected to the first wireless network, and, in response, applying the first service policy, where the first service policy assists in controlling usage of the first wireless network associated with a first service activity of the wireless communications device, and detecting that the wireless communications device is connected to the second wireless network, and, in response, applying the second service policy.