A wireless end-user device comprising: one or more modems (942, 946) for enabling the wireless end-user device to communicate over at least two wireless access networks, the at least two wireless access networks comprising a first wireless access network and a second wireless access network; a user interface; memory (910, 920); and one or more processors for executing one or more agents, the one or more agents configured to: identify when the wireless end-user device is connected to the first wireless access network, characterized in that the memory is configured to store a first service policy associated with the first wireless access network, the first service policy comprising one or more first-network policy settings or rules, the first service policy configured to assist the wireless end-user device to reduce data usage associated with a first service activity over the first wireless access network, the first service activity being less than all service activities available to the wireless end-user device, the first service policy for enabling the wireless end-user device to control the first service activity on the first wireless access network differently from how the wireless end-user device controls first service activity on the second wireless access network; and the one or more agents are further configured to: obtain, through the user interface, a user input indicating to apply the first service policy to the first service activity when the wireless end-user device is connected to the first wireless access network, identify attempted or successful data communications over the first wireless access network that are associated with the first service activity, and apply the first service policy to the identified attempted or successful data communications over the first wireless access network, thereby reducing data usage over the first wireless access network associated with the first service activity. one or more modems (942, 946) for enabling the wireless end-user device to communicate over at least two wireless access networks, the at least two wireless access networks comprising a first wireless access network and a second wireless access network; a user interface; memory (910, 920); and one or more processors for executing one or more agents, the one or more agents configured to: identify when the wireless end-user device is connected to the first wireless access network, identify when the wireless end-user device is connected to the first wireless access network, the memory is configured to store a first service policy associated with the first wireless access network, the first service policy comprising one or more first-network policy settings or rules, the first service policy configured to assist the wireless end-user device to reduce data usage associated with a first service activity over the first wireless access network, the first service activity being less than all service activities available to the wireless end-user device, the first service policy for enabling the wireless end-user device to control the first service activity on the first wireless access network differently from how the wireless end-user device controls first service activity on the second wireless access network; and the one or more agents are further configured to: obtain, through the user interface, a user input indicating to apply the first service policy to the first service activity when the wireless end-user device is connected to the first wireless access network, identify attempted or successful data communications over the first wireless access network that are associated with the first service activity, and apply the first service policy to the identified attempted or successful data communications over the first wireless access network, thereby reducing data usage over the first wireless access network associated with the first service activity. obtain, through the user interface, a user input indicating to apply the first service policy to the first service activity when the wireless end-user device is connected to the first wireless access network, identify attempted or successful data communications over the first wireless access network that are associated with the first service activity, and apply the first service policy to the identified attempted or successful data communications over the first wireless access network, thereby reducing data usage over the first wireless access network associated with the first service activity.